CN114061907B - Halo quantization system and method - Google Patents
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- 125000001475 halogen functional group Chemical group 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000013139 quantization Methods 0.000 title claims description 30
- 239000000523 sample Substances 0.000 claims abstract description 125
- 238000012545 processing Methods 0.000 claims abstract description 40
- 230000003287 optical effect Effects 0.000 claims abstract description 39
- 238000005286 illumination Methods 0.000 claims description 24
- 238000003384 imaging method Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 22
- 238000011002 quantification Methods 0.000 abstract description 10
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- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- XOFYZVNMUHMLCC-ZPOLXVRWSA-N prednisone Chemical compound O=C1C=C[C@]2(C)[C@H]3C(=O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 XOFYZVNMUHMLCC-ZPOLXVRWSA-N 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/28—Measuring arrangements characterised by the use of optical techniques for measuring areas
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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Abstract
本发明公开了一种光晕量化系统及方法。所述系统包括被测照射光源，被测照射光源具有预设形状的出光口；参考标准镜面反射板用于对出光口成像形成标准像；待测样品能够对出光口成像形成主像和位于主像周围的光晕，对出光口周围环境成像以形成环境像；光学探头用于采集第一图像及第二图像处理单元用于根据光晕区中各点色坐标、参考点的色坐标、标准区面积以及第一预设公式计算待测样品的光晕面积指数；和/或，处理单元用于获取第一图像及被测照射光源的亮度，并计算光晕区各点的亮度，处理单元还用于根据光晕区各点的亮度、被测照射光源的亮度及第二预设公式计算待测样品的光晕亮度比。本发明实施例能够对光晕进行量化。
The present invention discloses a halo quantification system and method. The system includes a measured irradiation light source, which has a light outlet of a preset shape; a reference standard mirror reflector is used to image the light outlet to form a standard image; the sample to be tested can image the light outlet to form a main image and a halo around the main image, and image the surrounding environment of the light outlet to form an environmental image; the optical probe is used to collect the first image and the second image; the processing unit is used to calculate the halo area index of the sample to be tested according to the color coordinates of each point in the halo area, the color coordinates of the reference point, the area of the standard area and the first preset formula; and/or, the processing unit is used to obtain the first image and the brightness of the measured irradiation light source, and calculate the brightness of each point in the halo area, and the processing unit is also used to calculate the halo brightness ratio of the sample to be tested according to the brightness of each point in the halo area, the brightness of the measured irradiation light source and the second preset formula. The embodiment of the present invention can quantify the halo.
Description
Technical Field
The embodiment of the invention relates to a halation quantization technology, in particular to a halation quantization system and a halation quantization method.
Background
With the development of display technology, the display panel plays a larger role, and accordingly, the requirements on the display panel are also higher.
Ambient light has an important influence on the display of the display panel, so that research on the display effect of the display panel under the ambient light has an important meaning, in the prior art, research on the display effect of the display panel under the ambient light is mainly focused on the reflection influence of the display panel on the ambient light, such as evaluation by using an ambient light contrast test method, however, the display panel has a halation phenomenon under the ambient light, which can seriously influence the display effect of the display panel, and a system for quantifying the halation to evaluate the halation is lacking in the prior art.
Disclosure of Invention
The invention provides a halation quantification system and a halation quantification method, which are used for quantifying halation and evaluating the halation according to a quantification value.
In a first aspect, an embodiment of the present invention provides a halo quantization system for quantifying a halo of a sample to be tested, the system comprising: the device comprises a measured irradiation light source, a reference standard mirror reflection plate, an optical probe and a processing unit; the detected irradiation light source is provided with a light outlet with a preset shape; the reference standard specular reflection plate is used for imaging the light outlet to form a standard image; the sample to be measured can image the light outlet to form a main image and halation around the main image, and image the surrounding environment of the light outlet to form an environment image; the optical probe is used for acquiring a first image and a second image, wherein the first image at least comprises a part of halation area corresponding to the halation and at least a part of environment area corresponding to the environment image, and the second image comprises a standard area corresponding to the standard image; the processing unit is used for acquiring the first image and the second image, calculating the area of the standard region, calculating the color coordinates of each point in the halation region and calculating the color coordinates of the reference point in the environment region; the processing unit is also used for calculating the halation area index of the sample to be detected according to the color coordinates of each point in the halation area, the color coordinates of the reference point, the area of the standard area and a first preset formula; and/or the processing unit is used for acquiring the first image and the brightness of the detected irradiation light source, calculating the brightness of each point of the halation area, and calculating the halation brightness ratio of the sample to be detected according to the brightness of each point of the halation area, the brightness of the detected irradiation light source and a second preset formula.
Optionally, when the processing unit is configured to calculate the halo area index of the sample to be measured according to the color coordinates of each point in the halo region, the color coordinates of the reference point, the area of the standard region, and a first preset formula, the first preset formula includes: Wherein Δl i is the difference between the black-and-white value in the ith point color coordinate in the halation area and the black-and-white value in the reference point color coordinate, Δa i is the difference between the red-green value in the ith point color coordinate in the halation area and the red-green value in the reference point color coordinate, Δb i is the difference between the yellow-blue value in the ith point color coordinate in the halation area and the yellow-blue value in the reference point color coordinate, i is greater than or equal to 1 and less than or equal to N, and N is the number of the middle points in the halation area; JNAD = S1/S; wherein S1 is the area of a dot formation region with Δe greater than 1 in the halo region, S is the area of the standard region, and JNAD is the halo area index; when the processing unit is configured to calculate a halation luminance ratio of the sample to be measured according to the luminance of each point in the halation area, the luminance of the illumination light source to be measured, and a second preset formula, the second preset formula is lcr=l1/L2, where L1 is a maximum value of luminance values in each point color coordinate in the halation area, L2 is the luminance of the illumination light source to be measured, and Lcr is the halation luminance ratio.
Optionally, the system further comprises a light shielding plate, wherein the light shielding plate comprises an opening, and the opening is used for arranging the sample to be tested; the optical probe is used for collecting a third image when the light shielding plate is at the first position, wherein the third image comprises a main image area corresponding to the main image, a halation area corresponding to the halation and a light shielding area corresponding to the light shielding plate; the optical probe is further used for collecting an image of the light shielding plate, which moves in the opposite direction of the first direction by a preset distance D, as the first image, wherein D=F+G/2,F is the distance between the center of the main image area in the third image and the light shielding area in the first direction, and G is the width of the standard area in the second image in the first direction.
Optionally, the system further comprises: the device comprises a semi-integrating sphere, a guide rail, an illuminometer, an illumination light source and an illumination light source baffle; the guide rail is arranged on the inner wall of the half integrating sphere, the optical probe and the measured irradiation light source are arranged on the guide rail, the sample to be measured is arranged on the sphere center of the half integrating sphere, the irradiation light source and the irradiation light source baffle are arranged inside the half integrating sphere, and the illuminometer is used for detecting the ambient illuminance in the half integrating sphere.
Optionally, the reference standard specular reflection board is disposed at a position adjacent to the opening on the surface of the light shielding board, and the reference standard specular reflection board is not coplanar with the sample to be measured.
Optionally, the preset shape of the light outlet is rectangular;
Preferably, the size of the rectangular light outlet can enable the length and the width of the standard area to be smaller than 1/3 of the length and 1/3 of the width of the display area of the sample to be detected respectively.
In a second aspect, an embodiment of the present invention further provides a halo quantization method, which is performed by the halo quantization system in the first aspect, where the method includes: the optical probe acquires the first image and the second image; the processing unit acquires the first image and the second image, calculates the area of the standard region, calculates the color coordinates of each point in the halation region, and calculates the color coordinates of the reference point in the environment region; the processing unit is also used for calculating the halation area index of the sample to be detected according to the color coordinates of each point in the halation area, the color coordinates of the reference point, the area of the standard area and a first preset formula; and/or the processing unit acquires the first image and the brightness of the detected irradiation light source, calculates the brightness of each point of the halation area, and is further used for calculating the halation brightness ratio of the sample to be detected according to the brightness of each point of the halation area, the brightness of the detected irradiation light source and a second preset formula.
Optionally, when the processing unit is configured to calculate the halo area index of the sample to be measured according to the color coordinates of each point in the halo region, the color coordinates of the reference point, the area of the standard region, and a first preset formula, the first preset formula includes: Wherein Δl i is the difference between the black-and-white value in the ith point color coordinate in the halation area and the black-and-white value in the reference point color coordinate, Δa i is the difference between the red-green value in the ith point color coordinate in the halation area and the red-green value in the reference point color coordinate, Δb i is the difference between the yellow-blue value in the ith point color coordinate in the halation area and the yellow-blue value in the reference point color coordinate, i is greater than or equal to 1 and less than or equal to N, and N is the number of the middle points in the halation area; JNAD = S1/S; wherein S1 is the area of a dot formation region with Δe greater than 1 in the halo region, S is the area of the standard region, and JNAD is the halo area index; when the processing unit is configured to calculate a halation luminance ratio of the sample to be measured according to the luminance of each point in the halation area, the luminance of the illumination light source to be measured, and a second preset formula, the second preset formula is lcr=l1/L2, where L1 is a maximum value of luminance values in each point color coordinate in the halation area, L2 is the luminance of the illumination light source to be measured, and Lcr is the halation luminance ratio.
Optionally, the system further comprises a light shielding plate, wherein the light shielding plate comprises an opening, and the opening is used for arranging the sample to be tested; the method further comprises the steps of: collecting a third image when the light shielding plate is at the first position, wherein the third image comprises a main image area corresponding to the main image, a halation area corresponding to the halation and a light shielding area corresponding to the light shielding plate; moving the light shielding plate along the reverse direction of the first direction by a preset distance D, wherein D=F+G/2,F is the distance between the center of the main image area in the third image and the light shielding area in the first direction, and G is the width of the standard area in the second image along the first direction; and acquiring an image of the light shielding plate after moving a preset distance D along a first direction as the first image.
Optionally, the system further comprises: the device comprises a semi-integrating sphere, a guide rail, an illuminometer, an illumination light source and an illumination light source baffle; the guide rail is arranged on the inner wall of the half integrating sphere, the optical probe and the measured irradiation light source are arranged on the guide rail, the sample to be measured is arranged at the sphere center of the half integrating sphere, the irradiation light source and the irradiation light source baffle are arranged inside the half integrating sphere, and the illuminometer is used for detecting the ambient light illuminance in the half integrating sphere; the method further comprises the steps of: moving the detected irradiation light source and the optical probe to enable the emergent light of the detected irradiation light source and the sphere center of the semi-integrating sphere to form a preset included angle; and calculating the halation area index and/or the halation brightness ratio of the sample to be measured under the preset included angle.
According to the technical scheme provided by the embodiment of the invention, the adopted halation quantification system comprises a measured irradiation light source, a reference standard mirror reflection plate, an optical probe and a processing unit; the measured irradiation light source is provided with a light outlet with a preset shape; the reference standard specular reflection plate is used for imaging the light outlet to form a standard image; the sample to be measured can image the light outlet to form a main image and halation around the main image, and image the surrounding environment of the light outlet to form an environment image; the optical probe is used for acquiring a first image and a second image, wherein the first image at least comprises a halation area corresponding to part of halation and an environment area corresponding to at least part of environment images, and the second image comprises a standard area corresponding to standard images; the processing unit is used for acquiring the first image and the second image, calculating the area of the standard region, calculating the color coordinates of each point in the halation region and calculating the color coordinates of the reference point in the environment region; the processing unit is also used for calculating the halation area index of the sample to be measured according to the color coordinates of each point in the halation area, the color coordinates of the reference point, the area of the standard area and the first preset formula; and/or the processing unit is used for acquiring the first image and the brightness of the measured irradiation light source, calculating the brightness of each point of the halation area, and calculating the halation brightness ratio of the sample to be measured according to the brightness of each point of the halation area, the brightness of the measured irradiation light source and a second preset formula. The invention can quantize the halation in a simple way, and the halation quantized value is related to the color coordinates of each point in the halation, the color coordinates of the reference point, the area of the standard image and the like, namely, the halation quantized value can accurately reflect the severity of the halation.
Drawings
Fig. 1 is a schematic structural diagram of a halo quantization system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a second image according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an imaging result of a sample to be measured according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a first image according to an embodiment of the present invention;
FIG. 5 is a top view of FIG. 1;
FIG. 6 is a schematic illustration of a third image;
FIG. 7 is a schematic view of an image acquired by the optical probe after the mask has moved a distance D;
fig. 8 is a flowchart of a halo quantization method according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Fig. 1 is a schematic structural diagram of a halation quantization system according to an embodiment of the present invention, and referring to fig. 1, the halation quantization system is used for evaluating halation of a sample to be measured, and the halation quantization system includes: a measured irradiation light source 101, a reference standard specular reflection plate 102, an optical probe 103, and a processing unit (not shown); the measured irradiation light source 101 has a light outlet 1011 (blackening treatment is performed around the light outlet) of a preset shape, and the reference standard specular reflection plate 102 is used for imaging the light outlet to form a standard image; the sample 104 to be measured can image the light outlet 1011 to form a main image and halos around the main image, and image the environment around the light outlet to form an environment image; the optical probe 103 is configured to acquire a first image and a second image, where the first image includes at least a part of a halation region corresponding to halation and at least a part of an environmental region corresponding to an environmental image, and the second image includes a standard region corresponding to a standard image; the processing unit is used for acquiring the first image and the second image, calculating the area of the standard region, calculating the color coordinates of each point in the halation region and calculating the color coordinates of the reference point in the environment region; the processing unit is also used for calculating the halation area index of the sample to be measured according to the color coordinates of each point in the halation area, the color coordinates of the reference point, the area of the standard area and the first preset formula; and/or the processing unit is used for acquiring the first image and the brightness of the measured irradiation light source, calculating the brightness of each point of the halation area, and calculating the halation brightness ratio of the sample to be measured according to the brightness of each point of the halation area, the brightness of the measured irradiation light source and a second preset formula.
Specifically, the sample to be tested may be a device for Light Emitting display such as a display panel, for example, a liquid crystal display panel or an Organic Light-Emitting Diode (OLED) display panel; Fig. 2 is a schematic diagram of a second image provided by the embodiment of the present invention, where, in fig. 2, a reference standard specular reflection board 102 can generate specular reflection on light reaching the surface of the second image, that is, no halation is generated, light emitted from a light outlet 1011 of a measured irradiation light source 101 is reflected by the reference standard specular reflection board 102 and then collected by an optical probe 103, for example, a CCD, where a portion of the second image corresponding to the light outlet is a bright spot, an area where the bright spot is located can be understood as a standard area 201, the shape of the bright spot is the same as that of the light outlet 1011, and the difference between the bright spot and surrounding brightness is large, the area of the bright spots is easy to calculate; FIG. 3 is a schematic diagram of the imaging result of a sample to be tested according to an embodiment of the present invention, referring to FIG. 3, when the incident light reaches the surface of the sample to be tested 104, there is reflection and scattering caused by surface treatment, and there is reflection caused by the lower mask layer structure through the surface, and since the regular pattern structure of the mask layer forms a reflection grating, the reflected light forms multi-level color diffraction fringes, and mixed surface scattering light generates halation, when the light brightness reaches the surface of the sample to be tested is larger, the halation is more obvious, the emergent light brightness of the light outlet is larger, and the halation generated is more obvious, i.e. the sample to be tested 104 performs blackening treatment on the light outlet 1011 (the periphery of the light outlet) and the image formed by the surrounding environment of the light outlet 1011 includes a main image 301 corresponding to the light outlet 1011, Taking the light outlet 1011 as an example, the main image 301 is also rectangular, the halo 302 includes four parts corresponding to four sides of the main image 301 respectively, and the brightness of each part of the halo 302 gradually decreases along the direction away from the main image 301; Fig. 4 is a schematic diagram of a first image provided in this embodiment of the present invention, referring to fig. 4, the first image includes a halo region 3021 corresponding to a portion of a halo and an environment region 3031 corresponding to a portion of an environment image, because there is a halo 302, the brightness of the halo 302 is blurred with the boundary of the main image 301, so that the area, the contour, etc. of the main image 301 are difficult to directly determine, and the main image 301 and the halo 302 are difficult to be divided, but because the area, the shape, etc. of the main image 301 and the standard image are identical, the area of the standard region 201 can be used as the area of the main image 301, the shape of the standard region 201 is used as the shape of the main image 301, The halo region 3021 and the environmental region 3031 in the first image may be obtained by comparing the second image with the image of the sample to be measured (the halo region 3021 and the environmental region 3031 may be obtained by other methods, which will be described in detail in the following embodiments), then, the color coordinates of each point (e.g., each pixel point) in the halo region 3021 are calculated and compared with the color coordinates of the reference point in the environmental region 3031, and the halo area index is obtained according to the first preset formula, for example, the ratio of the area of the point forming region in which the color coordinates of the halo region differ from the color coordinates of the reference point by a larger amount (e.g., the number of the pixel points of the type may be counted) to the standard region area (e.g., the total number of the pixel points of the standard region may be counted) is calculated as the halo quantization value, The halation area index is related to the color coordinates of each point in the halation area, so that the halation area index can accurately reflect the severity of halation, the reference point can be any point in the environmental area 3031, preferably the center point of the environmental area 3031, when the environmental area comprises a plurality of independent parts (such as two parts in fig. 4), the center point of any part of the environmental area can be selected as the reference point, if the sample to be measured does not have halation, the color coordinates of each point in the halation area are relatively close to the color coordinates of the reference point in the environmental area, and if the halation exists, the difference is relatively large, and the reference point is selected in the environmental area, so that the obtained halation area index is more representative. The halation brightness ratio of the sample to be measured can also be calculated according to the brightness of each point of the halation area, the brightness of the measured irradiation light source and a second preset formula (which will be described in detail below).
According to the technical scheme of the embodiment, the adopted halation quantification system comprises a measured irradiation light source, a reference standard mirror reflection plate, an optical probe and a processing unit; the measured irradiation light source is provided with a light outlet with a preset shape; the reference standard specular reflection plate is used for imaging the light outlet to form a standard image; the sample to be measured can image the light outlet to form a main image and halation around the main image, and image the surrounding environment of the light outlet to form an environment image; the optical probe is used for acquiring a first image and a second image, wherein the first image at least comprises a halation area corresponding to part of halation and an environment area corresponding to at least part of environment images, and the second image comprises a standard area corresponding to standard images; the processing unit is used for acquiring the first image and the second image, calculating the area of the standard region, calculating the color coordinates of each point in the halation region and calculating the color coordinates of the reference point in the environment region; the processing unit is also used for calculating the halation area index of the sample to be measured according to the color coordinates of each point in the halation area, the color coordinates of the reference point, the area of the standard area and the first preset formula; and/or the processing unit is used for acquiring the first image and the brightness of the measured irradiation light source, calculating the brightness of each point of the halation area, and calculating the halation brightness ratio of the sample to be measured according to the brightness of each point of the halation area, the brightness of the measured irradiation light source and a second preset formula. The invention can quantize the halation in a simple way, and the halation quantized value is related to the color coordinates of each point in the halation, the color coordinates of the reference point, the area of the standard image and the like, namely, the halation quantized value can accurately reflect the severity of the halation.
Optionally, the first preset formula includes: Wherein DeltaL i is the difference between the black and white value of the color coordinate of the ith point in the halation area and the black and white value of the color coordinate of the reference point, deltaa i is the difference between the red and green value of the ith point in the halation area and the red and green value of the color coordinate of the reference point, deltab i is the difference between yellow Lan Zhi of the ith point in the halation area and the yellow and blue value of the color coordinate of the reference point, 1 is less than or equal to i is less than or equal to N, and N is the number of the midpoints of the halation area; JNAD = S1/S; wherein S1 is the area of a point forming region with delta E larger than 1 in the halo region, S is the area of a standard region, JNAD is the halo area index; the second preset formula is lcr=l1/L2, where L1 is the maximum value of luminance values in each color coordinate in the halation area, L2 is the luminance of the measured illumination light source, and Lcr is the halation luminance ratio.
Specifically, Δe i represents the difference between the color coordinates of each point (each pixel point) in the halo region and the reference point, where the color coordinates can be obtained by comparing the color coordinates with the color coordinates of the D65 standard light source, and Δe i is larger, that is, the greater the color coordinates of the pixel point and the reference point are different, that is, the stronger the halo is at the point, and Δe i is smaller, that is, the smaller the color coordinates of the pixel point and the reference point are different, that is, the weaker the halo is at the point, and the severity of the halo is related to the area of the main image and the outgoing light intensity of the measured irradiation light source, and the embodiment can use the halo area index JNAD as the ratio of the area formed by the point in the halo region and the reference point with the greater color coordinates are different to the area of the standard region (for example, the ratio of the point in the halo region and the reference point with the greater color coordinates are different, or the ratio of the area formed by the point in the halo region and the reference point with the larger color coordinates are the area surrounded by the reference point and the standard region is the greater ratio of the area JNAD, that represents the weaker halo is the weaker the greater halo is the severity of the halo is represented by the weaker the greater halo area. Or the relation between the halation and the irradiation light source to be measured is represented by the halation brightness ratio Lcr, and if Lcr is larger, the halation is more serious, and Lcr is smaller, the halation is weaker. In the implementation of the embodiment, the adopted preset formulas are simpler, but the severity of halation can be accurately reflected, the calculated amount is small, and the implementation is easy.
Optionally, fig. 5 is a top view of fig. 1, and in combination with fig. 1 and fig. 5, the halo quantization system further includes: a light shielding plate 105, the light shielding plate 105 including an opening 1051, the opening 1051 being used for setting a sample 104 to be measured; the optical probe 103 is used for acquiring a third image when the light shielding plate is at the first position, wherein the third image comprises a main image area corresponding to the main image, a halation area corresponding to the halation and a light shielding area corresponding to the light shielding plate; the optical probe is also used for collecting an image of the light shielding plate after moving along the first direction by a preset distance D as a first image, wherein D=F+G/2,F is the distance between the center of the main image area in the third image and the light shielding area in the first direction, and G is the width of the standard area in the second image along the first direction.
Specifically, as shown in fig. 5, the light shielding plate 104 in fig. 5 is located at the first position, the size of the opening 1051 may be greater than or equal to the size of the display area of the sample 104 to be measured, and the light shielding plate is, for example, black, and the image formed by the light shielding plate in the optical probe 103 is black, so that the light shielding plate is easy to identify; fig. 6 is a schematic diagram of a third image, and in combination with fig. 5 and fig. 6, a reference standard specular reflection board may be disposed on the mask 105, where the third image includes the second image, an image 1051 of the mask, and a result image of the sample to be imaged, an image algorithm is used to obtain a width G of the standard area along the first direction Y from the third image or measurement, and a distance F between the center of the main image area 3011 and the mask area along the first direction Y is obtained, and since the standard area 2011 is identical to the main image area 3011, D is a sum of the width of the main image area 3011 and a width of a portion (an upper portion in fig. 6) of the halo area 3021 along the first direction Y, and after the mask moves a distance D along a direction opposite to the first direction Y (i.e., -Y) of the mask is moved, as shown in fig. 7, the mask just covers the main image area 3011, and only the halo area 3021 and the ambient area 3031 of the lower half of the main image area 3011 are exposed, so that the accurate and the precise cut of the halo image is obtained is facilitated. The sample to be measured can be placed on the black platform, so that after the light shielding plate moves, the part, exposed out of the opening part, of the sample to be measured is black, and the accuracy of the first image segmentation is further improved. The meaning that the main image area 3011 is just covered by the light shielding plate is as follows: the light shielding plate shields the light reflected by the main image area to the optical probe, but does not shield the light incident by the measured irradiation light source to the sample to be measured, so that halation still exists. It should be noted that, the first direction Y is merely an example, and the first image obtained at this time is a halation of the sample to be measured in the first direction Y, that is, the halation quantization value is a halation of the sample to be measured in the first direction Y, and the first direction Y may be any direction, and the halation quantization values of the sample to be measured in multiple directions are obtained through multiple measurements.
Optionally, with continued reference to fig. 1, the halo quantization system further comprises: a half integrating sphere 106, a guide rail 107, an illuminometer 108, an illumination light source 109, and an illumination light source shutter 110; the guide rail 107 is disposed on the inner wall of the half integrating sphere 106, the optical probe 103 and the irradiation light source 101 to be measured are disposed on the guide rail 107, the sample 105 to be measured is disposed on the center of the half integrating sphere 106, the irradiation light source 109 and the irradiation light source baffle 110 are disposed inside the half integrating sphere 106, and the illuminometer 108 is used for detecting the illuminance of the environment in the half integrating sphere 106.
Specifically, the halation quantification system can test halation generated by the irradiation light source to be tested on the sample to be tested under various environmental lights, at this time, the semi-integrating sphere 106, the irradiation light source 109 and the irradiation light source baffle 110 can be set to simulate real environmental lights, the irradiation light source baffle 110 and the semi-integrating sphere 106 are made of the same diffuse reflection material, and the illuminance of the environmental lights in the semi-integrating sphere can be detected by the illuminometer so that the environmental lights meet the requirements, thereby being convenient for quantifying the halation under various environmental lights. Meanwhile, the sample to be measured is arranged at the center of the semi-integrating sphere, the light path is easy to design, namely, the light emitted by the irradiation light source to be measured is easily reflected to the optical probe through the sample to be measured, and the optical probe and the irradiation light source to be measured can independently move, so that a preset included angle is formed between the emergent light of the irradiation light source to be measured and the sample to be measured, and the halo can be quantified conveniently under illumination of various angles.
Alternatively, with continued reference to fig. 1 and 5, the reference standard specular reflection plate 102 is disposed on the surface of the light shielding plate 105 adjacent to the opening 104, and the reference standard specular reflection plate 102 is not coplanar with the sample to be measured. By the arrangement, the image information acquired by the optical probe 103 can be ensured to contain both the second image and the image of the imaging result of the sample to be detected, namely the position of the optical probe 103 can be ensured to be capable of observing the images of the light outlet in the reference standard specular reflection plate 102 and the sample to be detected 104 at the same time; in other embodiments, the reference standard specular reflection plate may be first placed at the center of the half-integrating sphere, and the second image may be acquired by using the optical probe, and then the sample to be measured may be placed at the center of the half-integrating sphere, and the first image may be obtained after the light shielding plate is located at the first position and the distance D is moved according to the first position.
Optionally, the preset shape of the light outlet is rectangular. The main image area is consistent with the shape of the light outlet, and the formed halation comprises four parts corresponding to four sides of the rectangle, so that the calculation of the distances D, F and G is convenient, and the acquisition process of the halation quantification value is simplified.
Preferably, the size of the rectangular light outlet can enable the length and the width of the standard area to be respectively smaller than 1/3 of the length and 1/3 of the width of the display area of the sample to be detected. If the size of the rectangular light outlet is larger, the size of the standard area is also larger, and then the halation can be completely covered by the main image area on the sample to be measured, so that the halation cannot be quantified, and by setting the size of the rectangular light outlet, the size of the standard area is smaller than 1/3 of the size of the sample to be measured, so that enough areas on the sample to be measured can form the halation, and the halation is quantified conveniently.
Fig. 8 is a flowchart of a halo quantization method according to an embodiment of the present invention, and referring to fig. 8, the halo quantization method is performed by a halo quantization system, and the halo quantization method includes:
step S501, an optical probe acquires a first image and a second image;
Step S502, the processing unit acquires a first image and a second image, calculates the area of a standard area, calculates the color coordinates of each point in a halation area and calculates the color coordinates of a reference point in an environment area; the processing unit is also used for calculating the halation area index of the sample to be measured according to the color coordinates of each point in the halation area, the color coordinates of the reference point, the area of the standard area and a first preset formula; and/or the number of the groups of groups,
The processing unit acquires the first image and the brightness of the measured irradiation light source, calculates the brightness of each point of the halation area, and calculates the halation brightness ratio of the sample to be measured according to the brightness of each point of the halation area, the brightness of the measured irradiation light source and a second preset formula.
The specific working process of the halo quantization method in the embodiment of the present invention may refer to the description of the halo quantization system in the embodiment of the present invention, which is not repeated herein, and the halo quantization method in the embodiment has the advantages of simplicity and high efficiency, and the obtained halo quantization value can accurately reflect the severity of the halo, and has a strong correlation with the severity of the halo.
The first preset formula includes: Wherein DeltaL i is the difference between the black and white value in the ith point color coordinate and the black and white value in the reference point color coordinate in the halation area, deltaa i is the difference between the red and green value in the ith point color coordinate and the red and green value in the reference point color coordinate in the halation area, deltab i is the difference between yellow Lan Zhi in the ith point color coordinate and the yellow and blue value in the reference point color coordinate in the halation area, 1 is less than or equal to i is less than or equal to N, and N is the number of the midpoints of the halation area; JNAD = S1/S; wherein S1 is the area of a point forming region with delta E larger than 1 in the halo region, S is the area of a standard region, JNAD is the halo area index; the second preset formula is lcr=l1/L2, where L1 is the maximum value of the luminance values in the color coordinates of each point in the halation area, L2 is the luminance of the measured illumination light source, and Lcr is the halation luminance ratio.
A larger JNAD indicates a more severe halo and a smaller JNAD indicates a weaker halo. Or the relation between the halation and the irradiation light source to be measured is represented by the halation brightness ratio Lcr, and if Lcr is larger, the halation is more serious, and Lcr is smaller, the halation is weaker. In the implementation of the embodiment, the adopted preset formulas are simpler, but the severity of halation can be accurately reflected, the calculated amount is small, and the implementation is easy.
Optionally, the system further comprises a light shielding plate, wherein the light shielding plate comprises an opening, and the opening is used for arranging the sample to be tested; the method further comprises the steps of:
collecting a third image when the light shielding plate is positioned at the first position, wherein the third image comprises a main image area corresponding to the main image, a halation area corresponding to the halation and a light shielding area corresponding to the light shielding plate;
Moving the light shielding plate along the reverse direction of the first direction by a preset distance D, wherein D=F+G/2,F is the distance between the center of the main image area in the third image and the light shielding area in the first direction, and G is the width of the standard area in the second image along the first direction;
and acquiring an image of the light shielding plate after moving a preset distance D along a first direction as the first image.
After the light shielding plate moves along the opposite direction of the first direction by the distance D, the light shielding plate just covers the main image area, and only the halation area 3021 and the environment area 3031 in the lower half part of fig. 6 are exposed, so that the main image area and the halation area are accurately cut, the optical probe is facilitated to accurately acquire the first image, and further a more accurate halation quantification value is obtained.
Optionally, the halo quantization system further comprises: the device comprises a semi-integrating sphere, a guide rail, an illuminometer, an illumination light source and an illumination light source baffle; the method further comprises the steps of: moving the detected irradiation light source and the optical probe to enable the emergent light of the detected irradiation light source and the sphere center of the semi-integrating sphere to form a preset included angle;
calculating a halation area index and/or a halation brightness ratio of the sample to be measured under a preset included angle; and/or the number of the groups of groups,
The method further comprises the steps of: adjusting the luminous brightness of the irradiation light source to enable the ambient light brightness in the semi-integrating sphere to be a preset brightness value;
and calculating the halation area index and/or the halation brightness ratio of the sample to be measured under the preset brightness value.
The halation quantification system can test halation generated by the measured irradiation light source on the sample to be measured under various environmental lights, and can be provided with a half integrating sphere 106, an irradiation light source 109 and an irradiation light source baffle 110 at the moment so as to simulate real environmental lights, and the illuminance of the environmental lights in the half integrating sphere can be detected by an illuminometer so that the environmental lights meet the requirements, thereby being convenient for quantifying the halation under various environmental lights. The optical probe and the measured irradiation light source can move independently, so that a preset included angle is formed between the emergent light of the measured irradiation light source and the sample to be measured, and the halo can be quantified conveniently under illumination of various angles (such as 0-85 degrees).
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. A halo quantization system for quantifying halos of a sample to be tested, the system comprising:
the device comprises a measured irradiation light source, a reference standard mirror reflection plate, an optical probe and a processing unit;
the detected irradiation light source is provided with a light outlet with a preset shape; the reference standard specular reflection plate is used for imaging the light outlet to form a standard image;
The sample to be measured can image the light outlet to form a main image and halation around the main image, and image the surrounding environment of the light outlet to form an environment image;
The optical probe is used for acquiring a first image and a second image, wherein the first image at least comprises a part of halation area corresponding to the halation and at least a part of environment area corresponding to the environment image, and the second image comprises a standard area corresponding to the standard image;
The processing unit is used for acquiring the first image and the second image, calculating the area of the standard region, calculating the color coordinates of each point in the halation region and calculating the color coordinates of the reference point in the environment region; the processing unit is also used for calculating the halation area index of the sample to be detected according to the color coordinates of each point in the halation area, the color coordinates of the reference point, the area of the standard area and a first preset formula; and/or the number of the groups of groups,
The processing unit is used for acquiring the first image and the brightness of the detected irradiation light source, calculating the brightness of each point of the halation area, and calculating the halation brightness ratio of the sample to be detected according to the brightness of each point of the halation area, the brightness of the detected irradiation light source and a second preset formula;
When the processing unit is configured to calculate a halo area index of the sample to be measured according to each point color coordinate in the halo region, the color coordinate of the reference point, the area of the standard region, and a first preset formula, the first preset formula includes:
Wherein Δl i is the difference between the black-and-white value in the ith point color coordinate in the halation area and the black-and-white value in the reference point color coordinate, Δa i is the difference between the red-green value in the ith point color coordinate in the halation area and the red-green value in the reference point color coordinate, Δb i is the difference between the yellow-blue value in the ith point color coordinate in the halation area and the yellow-blue value in the reference point color coordinate, i is greater than or equal to 1 and less than or equal to N, and N is the number of the middle points in the halation area;
JNAD = S1/S; wherein S1 is the area of a dot formation region with Δe i greater than 1 in the halo region, S is the area of the standard region, and JNAD is the halo area index;
When the processing unit is configured to calculate a halation luminance ratio of the sample to be measured according to the luminance of each point in the halation area, the luminance of the illumination light source to be measured, and a second preset formula, the second preset formula is lcr=l1/L2, where L1 is a maximum value of luminance values of each point in the halation area, L2 is the luminance of the illumination light source to be measured, and Lcr is the halation luminance ratio.
2. The system of claim 1, wherein the system further comprises a controller configured to control the controller,
The system also comprises a light shielding plate, wherein the light shielding plate comprises an opening, and the opening is used for arranging the sample to be tested;
The optical probe is used for collecting a third image when the light shielding plate is at the first position, wherein the third image comprises a main image area corresponding to the main image, a halation area corresponding to the halation and a light shielding area corresponding to the light shielding plate;
the optical probe is further used for collecting an image of the light shielding plate, which moves in the opposite direction of the first direction by a preset distance D, as the first image, wherein D=F+G/2,F is the distance between the center of the main image area in the third image and the light shielding area in the first direction, and G is the width of the standard area in the second image in the first direction.
3. The system of claim 1, wherein the system further comprises: the device comprises a semi-integrating sphere, a guide rail, an illuminometer, an illumination light source and an illumination light source baffle;
The guide rail is arranged on the inner wall of the half integrating sphere, the optical probe and the measured irradiation light source are arranged on the guide rail, the sample to be measured is arranged on the sphere center of the half integrating sphere, the irradiation light source and the irradiation light source baffle are arranged inside the half integrating sphere, and the illuminometer is used for detecting the ambient illuminance in the half integrating sphere.
4. The system of claim 2, wherein the reference standard specular reflecting plate is disposed on the surface of the light shield adjacent to the opening, and wherein the reference standard specular reflecting plate is non-coplanar with the sample under test.
5. The system of claim 1, wherein the light exit opening is rectangular in preset shape.
6. The system of claim 5, wherein the rectangular light outlet is sized such that the length and width of the standard region are less than 1/3 of the length and 1/3 of the width of the display region of the sample to be measured, respectively.
7. A halation quantization method performed by the halation quantization system of any one of claims 1 to 6,
The method comprises the following steps:
the optical probe acquires the first image and the second image;
The processing unit acquires the first image and the second image, calculates the area of the standard region, calculates the color coordinates of each point in the halation region, and calculates the color coordinates of the reference point in the environment region; the processing unit is also used for calculating the halation area index of the sample to be detected according to the color coordinates of each point in the halation area, the color coordinates of the reference point, the area of the standard area and a first preset formula; and/or the number of the groups of groups,
The processing unit is used for acquiring the first image and the brightness of the detected irradiation light source, calculating the brightness of each point of the halation area, and calculating the halation brightness ratio of the sample to be detected according to the brightness of each point of the halation area, the brightness of the detected irradiation light source and a second preset formula.
8. The method of claim 7, wherein the step of determining the position of the probe is performed,
When the processing unit is configured to calculate a halo area index of the sample to be measured according to each point color coordinate in the halo region, the color coordinate of the reference point, the area of the standard region, and a first preset formula, the first preset formula includes:
Wherein Δl i is the difference between the black-and-white value in the ith point color coordinate in the halation area and the black-and-white value in the reference point color coordinate, Δa i is the difference between the red-green value in the ith point color coordinate in the halation area and the red-green value in the reference point color coordinate, Δb i is the difference between the yellow-blue value in the ith point color coordinate in the halation area and the yellow-blue value in the reference point color coordinate, i is greater than or equal to 1 and less than or equal to N, and N is the number of the middle points in the halation area;
JNAD = S1/S; wherein S1 is the area of a dot formation region with Δe i greater than 1 in the halo region, S is the area of the standard region, and JNAD is the halo area index;
When the processing unit is configured to calculate a halation luminance ratio of the sample to be measured according to the luminance of each point in the halation area, the luminance of the illumination light source to be measured, and a second preset formula, the second preset formula is lcr=l1/L2, where L1 is a maximum value of luminance values of each point in the halation area, L2 is the luminance of the illumination light source to be measured, and Lcr is the halation luminance ratio.
9. The method of claim 7, wherein the system further comprises a mask comprising an opening for positioning the sample to be tested;
the method further comprises the steps of:
Collecting a third image when the light shielding plate is at the first position, wherein the third image comprises a main image area corresponding to the main image, a halation area corresponding to the halation and a light shielding area corresponding to the light shielding plate;
Moving the light shielding plate along the reverse direction of the first direction by a preset distance D, wherein D=F+G/2,F is the distance between the center of the main image area in the third image and the light shielding area in the first direction, and G is the width of the standard area in the second image along the first direction;
and acquiring an image of the light shielding plate after moving a preset distance D along a first direction as the first image.
10. The method of claim 7, wherein the system further comprises: the device comprises a semi-integrating sphere, a guide rail, an illuminometer, an illumination light source and an illumination light source baffle; the guide rail is arranged on the inner wall of the half integrating sphere, the optical probe and the measured irradiation light source are arranged on the guide rail, the sample to be measured is arranged at the sphere center of the half integrating sphere, the irradiation light source and the irradiation light source baffle are arranged inside the half integrating sphere, and the illuminometer is used for detecting the ambient light illuminance in the half integrating sphere;
The method further comprises the steps of: moving the detected irradiation light source and the optical probe to enable the emergent light of the detected irradiation light source and the sphere center of the semi-integrating sphere to form a preset included angle;
And calculating the halation area index and/or the halation brightness ratio of the sample to be measured under the preset included angle.
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| JP2000258614A (en) * | 1999-03-10 | 2000-09-22 | Dainippon Printing Co Ltd | Antidazzle film and method for quantitative evaluation of antidazzle property |
| JP2008170344A (en) * | 2007-01-12 | 2008-07-24 | Fujifilm Corp | Evaluating method and measuring device of glareproof |
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| JP4297414B2 (en) * | 2003-05-07 | 2009-07-15 | 富士フイルム株式会社 | Method and apparatus for evaluating reflection characteristics of antireflection material |
| CN109255924A (en) * | 2007-11-15 | 2019-01-22 | 爱克斯崔里斯科技有限公司 | particle detection |
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| TW201508256A (en) * | 2013-08-20 | 2015-03-01 | Sumika Technology Co Ltd | System and method of measuring antiglare degree |
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| JP2008170344A (en) * | 2007-01-12 | 2008-07-24 | Fujifilm Corp | Evaluating method and measuring device of glareproof |
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