CN109587472B - Method and device for measuring delay difference of left-eye image and right-eye image in three-dimensional display - Google Patents
Method and device for measuring delay difference of left-eye image and right-eye image in three-dimensional display Download PDFInfo
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Abstract
The invention provides a method and a device for measuring delay difference of a left eye image and a right eye image in three-dimensional display, wherein the method comprises the following steps: s1: respectively setting a left eye image sequence and a right eye image sequence with frame-by-frame horizontal displacement characteristics, wherein the frame frequencies of the two image sequences are the same; in the left-eye image sequence and the right-eye image sequence, one left-eye image and one right-eye image with the same frame number are called as an image pair; s2: displaying the test signal sequence on a stereoscopic display device, wherein bright and dark areas of two groups of test units with the same display position in the image pair are displayed in a superimposed manner; s3: on the stereo display device, the superposition of the horizontal coordinate positions of the bright and dark area change points and the dark and bright area change points of one pair of test units can be observed, the serial number of the test unit is recorded, and the frame level delay difference is obtained by combining the frame frequency of the left eye image and the right eye image according to the predefinition of the test unit.
Description
Technical Field
The invention relates to the field of stereo display measurement, in particular to a method and a device for measuring delay difference of a left eye image and a right eye image in stereo display.
Background
The three-dimensional display is the 3D display, the picture is three-dimensional and vivid in the 3D display, the images are not limited to the screen plane any more, the screen-out visual effect and the screen-in visual effect are increased, and the audiences have the feeling of being personally on the scene. The stereoscopic display is applied to many fields, such as television, movies, games, medical imaging, engineering display and the like, but because the stereoscopic display is the transmission and display of left and right images in a plurality of systems by channels, due to the performance difference of electronic devices, the length of transmission channels is unequal or software setting and other factors, the left and right eye images can present a certain asynchronous phenomenon at the display end, namely, the left and right eye images of the stereoscopic display have a certain delay difference, and the stereoscopic display experience of a user is influenced. In the prior art, the delay difference of a left eye image and a right eye image is displayed stereoscopically in a mode of adding a photoelectric conversion probe and an oscilloscope generally, and the mode has the advantages of simple principle, but has the defects that equipment auxiliary test is needed, books on the oscilloscope are difficult to determine the time sequence relation of the left channel image and the right channel image, and the mode is not favorable for daily monitoring or engineering application.
Disclosure of Invention
Aiming at the defects in the prior art, the invention solves the technical problems that: after a user inputs a test signal, whether a left-eye image and a right-eye image display delay difference exist in the stereoscopic display system or not and the size of the delay difference can be simply and intuitively read through visual inspection.
In order to solve the above technical problem, in a first aspect, the present invention provides a method for measuring a delay difference between left and right eye images in stereoscopic display, including:
s1: a left-eye image sequence and a right-eye image sequence having a horizontal displacement characteristic frame by frame are set, and the frame rates of the two image sequences are the same. In the left-eye image sequence and the right-eye image sequence, one left-eye image and one right-eye image with the same frame number are called an image pair, the left-eye image and the right-eye image in the image pair both comprise 2n +1 test units, and the 2n +1 test units in the left-eye image are called left-eye test unit groups; the 2n +1 test units in the right eye image have the same positions as the test units in the left eye image and are in one-to-one correspondence, and the test units are called right eye test unit groups; two test units in the two test unit groups, which correspond to each other one by one, are called a pair of test units;
s2: displaying the test signal sequence on a stereoscopic display device, wherein bright and dark areas of the test units with the same positions in the image pair are displayed in an overlapping mode;
s3: on the stereoscopic display equipment, when the horizontal coordinate positions of the bright and dark area change points and the dark and bright area change points of one pair of test units coincide, the serial number of the test unit is recorded, and according to the predefinition of the test unit, the frame frequency of the left eye image and the frame frequency of the right eye image are combined to obtain the frame level delay difference.
Further, in the S1, the test signal sequence includes: the left eye image sequence is set by the left eye image, and the right eye image sequence is set by the right eye image;
one of the two image sequences is a reference image, and the other one is a scale chart.
Further, in S1, the method further includes: according to the image sequence corresponding to the reference image, a source reference image sequence is produced; and manufacturing a source graduation chart sequence according to the image sequence corresponding to the graduation chart.
Further, the source reference map sequence or the source scale map sequence includes:
2n +1 test units with the same width are distributed on the image corresponding to each sequence at intervals, n is a natural number larger than 0, and each test unit comprises two test blocks connected in a bright-dark manner or in a dark-bright manner.
Further, the difference of the test unit between the reference graph and the calibration graph sequence comprises:
the positions of bright and dark connections of each test unit on the image corresponding to the source reference image sequence are the same;
the dark and light connection positions of each test unit on the image corresponding to the source scale chart sequence are different, and the position offset is increased/decreased sequentially according to a fixed interval, wherein the dark and light connection positions of the test units are the same as the light and dark connection positions of each test unit of the source reference chart sequence.
Furthermore, the coordinates of the horizontal positions of the 2n +1 test units in the reference graph changed from the bright blocks to the dark blocks are the same, namely, the brightness change points are the same;
the 2n +1 test units in the graduated graph correspond to the horizontal position coordinate points changed from the dark blocks to the bright blocks, namely, the dark and bright change points are in an arithmetic progression, and the difference is marked as d, so that a reading graduated scale is formed: defining a scale 0 as a horizontal position coordinate point where the dark and light change points on the scale chart are equal to the light and dark change points in the reference chart;
the scale 1 and the scale 0 move for one frame and then have the same horizontal coordinate position, and have a distance of 1d from the scale 0 in the horizontal direction;
the horizontal coordinate position of the scale 2 after moving two frames is the same as that of the scale 0, and the distance between the scale 2 and the scale 0 is 2d in the horizontal direction;
the scale-1 and the scale 0 move the same horizontal coordinate position of the previous frame, and have a distance of 1d from the scale 0 in the horizontal direction;
the horizontal coordinate positions of the scale-2 and the scale 0 in the two frames before movement are the same, and the distance between the scale-2 and the scale 0 in the horizontal direction is 2 d; d is equal to the horizontal movement speed v of the test unit, and the bright and dark change points of the reference map and the dark and bright change points of the scale map synchronously displace along with the horizontal movement of the test unit, and respectively record the scales 0, 1, 2.
Further, the step S2 includes: normally displaying a left image sequence, namely a left eye image sequence and a right image sequence, namely a right image sequence on a stereo display system, wherein in a standard state, the brightness and darkness change points of the n +1 test units in the reference chart are equal to the horizontal coordinate points of the darkness and brightness change points of the test unit A (0) in the scale chart, and the brightness and darkness change points are overlapped in position;
if the graduation diagram is delayed by one frame compared with the reference diagram, the position where the horizontal coordinate points of the two diagrams coincide appears on the test unit A (1);
if the two frames lag behind, the position where the horizontal coordinate points of the two images coincide appears on the test unit A (2);
if the graduation diagram is ahead of the reference diagram by one frame, the position where the horizontal coordinate points of the two diagrams coincide appears on the test unit A (-1);
if two frames are advanced, the position where the horizontal coordinate points of the two graphs coincide appears on the test unit A (-2).
Further, the display process in step S2 includes:
and overlapping the image corresponding to the source graduation chart sequence with each test unit in the image corresponding to the source reference chart sequence, wherein the position of the dark-light connection of the test unit is overlapped with the position of the light-dark connection of the corresponding test unit in the source reference chart sequence.
Further, the step S3 includes: and on the stereoscopic display system, the bright and dark areas of the test unit with the same image centering position are displayed in an overlapping manner, and the frame-level delay difference is obtained according to the unit serial numbers of the bright and dark area change points of the test unit in the image centering and the horizontal coordinate position coincidence of the dark and bright area change points.
In a second aspect, the present invention provides an apparatus for measuring a delay difference between left and right eye images of a stereoscopic display, comprising:
the setting module is used for respectively setting a left eye image sequence and a right eye image sequence with the frame-by-frame horizontal displacement characteristic, and the frame rates of the two image sequences are the same. In the left-eye image sequence and the right-eye image sequence, one left-eye image and one right-eye image with the same frame number are called an image pair, the left-eye image and the right-eye image in the image pair both comprise 2n +1 test units, and the 2n +1 test units in the left-eye image are called left-eye test unit groups; the 2n +1 test units in the right eye image have the same positions as the test units in the left eye image and are in one-to-one correspondence, and the test units are called right eye test unit groups; two test units in the two test unit groups, which correspond to each other one by one, are called a pair of test units;
the display module is used for displaying the test signal sequence on a stereoscopic display device, and bright and dark areas of the test units with the same positions in the image pair are displayed in an overlapping mode;
and the frame level delay difference calculation module is used for recording the serial number of the test unit when the horizontal coordinate positions of the bright and dark area change points and the dark and bright area change points of one pair of test units are overlapped on the three-dimensional display equipment, and obtaining the frame level delay difference by combining the frame frequency of the left eye image and the frame frequency of the right eye image according to the predefinition of the test unit.
Further, in the setting module, the test signal sequence includes: the left eye image sequence is set by the left eye image, and the right eye image sequence is set by the right eye image;
one of the two image sequences is a reference image, and the other one is a scale chart.
Further, the setting module further includes: according to the image sequence corresponding to the reference image, a source reference image sequence is produced; and manufacturing a source graduation chart sequence according to the image sequence corresponding to the graduation chart.
Further, the difference of the test unit between the reference graph and the calibration graph sequence comprises:
the positions of bright and dark connections of each test unit on the image corresponding to the source reference image sequence are the same;
the dark and light connection positions of each test unit on the image corresponding to the source scale chart sequence are different, the position offset is sequentially increased/decreased according to the fixed length, and the dark and light connection position of one test unit is the same as the light and dark connection position of each test unit of the source reference chart sequence.
The invention has the beneficial effects that:
the method provided by the invention can be used for qualitatively and quantitatively measuring the delay difference of the left eye image and the right eye image of the stereoscopic display system, and compared with the traditional mode of adopting a photoelectric conversion probe and an oscilloscope, the method has the advantages of simplicity, convenience, easiness in use, time saving, labor saving and low cost. Before the stereoscopic display system is used, the test signal sequence is operated for a period of time, the coincidence positions of the bright and dark change points and the dark and bright change scale coordinates of the left eye image test unit and the right eye image test unit are read, the frame-level delay difference can be obtained by combining the frame frequency, the conventional inspection can be efficiently completed, and the experience effect of a stereoscopic display user is ensured.
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FIG. 1 is a schematic flow chart of a method for measuring delay difference of a left-eye image and a right-eye image in a stereoscopic display mode according to the present invention;
FIG. 2 is a schematic diagram of a sequence of source-reference diagrams of an embodiment of a method for measuring delay difference of a left-eye image and a right-eye image in a stereoscopic display according to the present invention;
FIG. 3 is a schematic view of a sequence of source scale charts in an embodiment of a method for measuring delay difference of a left-eye image and a right-eye image in a stereoscopic display according to the present invention;
FIG. 4 is a three-dimensional display diagram of a left-eye image signal and a right-eye image signal synchronously captured in the middle area according to the method for measuring the delay difference of the left-eye image and the right-eye image of the invention;
FIG. 5 is a three-dimensional display diagram of a middle region of an intercepted test signal where a right image is delayed by one frame from a left image according to an embodiment of the method for measuring a delay difference between left and right eye images of a three-dimensional display of the present invention;
FIG. 6 is a perspective view of a middle region of an intercepted test signal with a frame ahead of a left image in an embodiment of a method for measuring a delay difference between left and right eye images according to the present invention; and
fig. 7 is a schematic structural diagram of a device for measuring delay difference of left and right eye images in stereoscopic display according to the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular equipment structures, interfaces, techniques, etc. in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
As shown in fig. 1, a flow chart of a method for measuring delay difference of a left-eye image and a right-eye image in a stereoscopic display system is schematically shown, so that after a user inputs a test signal, the user can easily and intuitively read whether the delay difference of the left-eye image and the right-eye image and the size of the delay difference exist in the stereoscopic display system through visual inspection.
The invention adopts the following solution:
s1: a left-eye image sequence and a right-eye image sequence having a horizontal displacement characteristic frame by frame are set, and the frame rates of the two image sequences are the same. In the left-eye image sequence and the right-eye image sequence, one left-eye image and one right-eye image with the same frame number are called an image pair, the left-eye image and the right-eye image in the image pair both comprise 2n +1 test units, and the 2n +1 test units in the left-eye image are called left-eye test unit groups; the 2n +1 test units in the right eye image have the same positions as the test units in the left eye image, and are in one-to-one correspondence, and the test units are called right eye test unit groups. Two test units in the two test unit groups, which correspond to each other one by one, are called a pair of test units;
s2: displaying the test signal sequence on a stereoscopic display device, wherein bright and dark areas of the test units with the same positions in the image pair are displayed in an overlapping mode;
s3: on the stereoscopic display device, it can be observed that the horizontal coordinate positions of the bright and dark area change points and the dark and bright area change points of one pair of test units coincide, the serial number of the test unit is recorded, and according to the predefinition of the test unit, the frame frequency of the left eye image and the right eye image is combined to obtain the frame level delay difference.
In some demonstrative embodiments, in S1, the test signal sequence includes: a left eye image sequence in which the left eye image is set, and a right eye image sequence in which the right eye image is set;
one of the two image sequences is a reference image, and the other one is a scale chart.
In some demonstrative embodiments, in S1, further including: according to the image sequence corresponding to the reference image, a source reference image sequence is produced; and manufacturing a source graduation chart sequence according to the image sequence corresponding to the graduation chart.
In some demonstrative embodiments, the sequence of source reference maps or source scale maps includes:
and 2n +1 rows of test units with the same width are distributed on the image corresponding to each sequence at intervals, n is a natural number greater than 0, and each test unit comprises two test blocks connected in a bright-dark manner or in a dark-bright manner.
In some demonstrative embodiments, the reference map and the scale map sequence have test unit difference differences including:
the positions of bright and dark connections of each test unit on the image corresponding to the source reference image sequence are the same;
the dark and light connection positions of each test unit on the image corresponding to the source scale chart sequence are different, and the position offset is increased/decreased sequentially according to a fixed interval, wherein the dark and light connection positions of the test units are the same as the light and dark connection positions of each test unit of the source reference chart sequence.
In some illustrative embodiments, the 2n +1 test units in the reference map have the same horizontal position coordinate point from the light block to the dark block, i.e. the light and dark change points;
the 2n +1 test units in the graduated graph correspond to the horizontal position coordinate points changed from the dark blocks to the bright blocks, namely, the dark and bright change points are in an arithmetic progression, and the difference is marked as d, so that a reading graduated scale is formed: defining a scale 0 as a horizontal position coordinate point where the dark and light change points on the scale chart are equal to the light and dark change points in the reference chart;
the scale 1 and the scale 0 move for one frame and then have the same horizontal coordinate position, and have a distance of 1d from the scale 0 in the horizontal direction;
the horizontal coordinate position of the scale 2 after moving two frames is the same as that of the scale 0, and the distance between the scale 2 and the scale 0 is 2d in the horizontal direction;
the scale-1 and the scale 0 move the same horizontal coordinate position of the previous frame, and have a distance of 1d from the scale 0 in the horizontal direction;
the horizontal coordinate positions of the scale-2 and the scale 0 in the two frames before movement are the same, and the distance between the scale-2 and the scale 0 in the horizontal direction is 2 d; d is equal to the horizontal movement speed v of the test unit, and the bright and dark change points of the reference map and the dark and bright change points of the scale map synchronously displace along with the horizontal movement of the test unit, and respectively record the scales 0, 1, 2.
In some demonstrative embodiments, step S2 may include: normally displaying a left image, namely a left-eye image sequence, and a right image, namely a right-eye image sequence on a stereoscopic display system, wherein in a standard state, the brightness and darkness change points of n +1 test units in a reference chart are equal to the horizontal coordinate points of the darkness and brightness change points of a test unit A (0) in a scale chart, and the brightness and darkness change points are overlapped in position;
if the graduation diagram is delayed by one frame compared with the reference diagram, the position where the horizontal coordinate points of the two diagrams coincide appears on the test unit A (1);
if the two frames lag behind, the position where the horizontal coordinate points of the two images coincide appears on the test unit A (2);
if the graduation diagram is ahead of the reference diagram by one frame, the position where the horizontal coordinate points of the two diagrams coincide appears on the test unit A (-1);
if two frames are advanced, the position where the horizontal coordinate points of the two graphs coincide appears on the test unit A (-2).
In some illustrative embodiments, the displaying in step S2 includes:
and overlapping the image corresponding to the source graduation chart sequence with each test unit in the image corresponding to the source reference chart sequence, wherein the position of the dark-light connection of the test unit is overlapped with the position of the light-dark connection of the corresponding test unit in the source reference chart sequence.
In some demonstrative embodiments, step S3 may include: and on the stereoscopic display system, the bright and dark areas of the test unit with the same image centering position are displayed in an overlapping manner, and the frame-level delay difference is obtained according to the unit serial numbers of the bright and dark area change points of the test unit in the image centering and the horizontal coordinate position coincidence of the dark and bright area change points.
The following examples illustrate specific embodiments:
And 2, inputting the source test signal into a stereoscopic display system synchronized with the left-eye image signal and the right-eye image signal for normal display, wearing a 3D eyepiece, observing that the positions of the coordinates of the change points of the left image and the right image are overlapped on a test unit A (0), wherein the lengths of the non-overlapped areas of the white blocks and the left image white blocks on the test units A (1), A (2) and A (3) of the right image are respectively 1D, 2D and 3D, the lengths of the over-overlapped areas of the test units A (-1), A (-2) and A (-3) of the right image and the left image are respectively 1D, 2D and 3D, and as shown in FIG. 4, the binocular vision delay of the stereoscopic display system is marked as 0, namely the right image is synchronized with the left image.
And 3, adjusting the stereoscopic display system, increasing the transmission time length of the right channel signal, delaying the right eye image for one frame time than the left eye image, displaying the right eye image and the left eye image, observing that the positions of the left and right image change points, which are overlapped by the coordinates, are on the test unit A (1), and the lengths of the non-overlapped areas of the white blocks and the left image white blocks on the test units A (2) and A (3) of the right image are respectively 1d and 2d, and the lengths of the over-overlapped areas of the white blocks and the left image white blocks on the test units A (0), A (-1), A (-2) and A (-3) of the right image are respectively 1d, 2d, 3d and 4d, as shown in FIG. 5, the binocular vision delay time difference of the stereoscopic display system is made to be 1, namely, and the right image (scale chart) is delayed by one frame.
And 4, adjusting the stereoscopic display system, increasing the transmission time length of the left channel signal, enabling the right eye image to be displayed in advance of the left eye image by one frame time, observing that the positions of the left and right image change points, which are overlapped by the coordinates, are on a test unit A (-1), the lengths of the non-overlapped areas of the white blocks of the right image test unit A (0), the left image test unit A (1), the left image white block test unit A (2) and the left image test unit A (3) are respectively 1d, 2d, 3d and 4d, and the lengths of the over-overlapped areas of the white blocks of the right image test unit A (-2) and the left image white block test unit A (-3) are respectively 1d and 2d, as shown in FIG. 6, the binocular vision time difference of the stereoscopic display system is marked as-1, namely the right image (scale image) is advanced by one frame compared with.
As shown in fig. 7, the present invention also provides an apparatus for measuring a delay difference between left and right eye images in a stereoscopic display, including:
a setting module 100, configured to set a left-eye image sequence and a right-eye image sequence with a frame-by-frame horizontal displacement characteristic respectively;
the display module 200 is configured to display the test signal sequence on a stereoscopic display device, and display bright and dark areas of the test unit with the same position in the image pair in an overlapping manner;
a frame-level delay difference calculating module 300, configured to observe that, on the stereoscopic display device, horizontal coordinate positions of a bright-area change point and a dark-area change point of one pair of test units coincide with each other, record a serial number of the test unit, and obtain a frame-level delay difference according to predefinition of the test unit and by combining frame frequencies of the left-eye image and the right-eye image.
The reader should understand that in the description of this specification, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A method for measuring delay difference of a left eye image and a right eye image in stereoscopic display is characterized by comprising the following steps:
s1: respectively setting a left eye image sequence and a right eye image sequence with frame-by-frame horizontal displacement characteristics, wherein the frame frequencies of the two image sequences are the same; in the left-eye image sequence and the right-eye image sequence, a left-eye image and a right-eye image with the same frame number are called an image pair, the left-eye image and the right-eye image in the image pair both comprise 2n +1 test units, and the 2n +1 test units in the left-eye image are called left-eye test unit groups; the 2n +1 test units in the right eye image have the same positions as the test units in the left eye image and are in one-to-one correspondence, and the test units are called right eye test unit groups; two test units in the two test unit groups, which correspond to each other one by one, are called a pair of test units;
the test signal sequence includes: the left eye image sequence is set by the left eye image, and the right eye image sequence is set by the right eye image;
two image sequences, wherein one image sequence is a reference image, and the other image sequence is a scale chart;
the 2n +1 test units in the graduated graph correspond to the horizontal position coordinate points changed from the dark blocks to the bright blocks, namely, the dark and bright change points are in an arithmetic progression, and the difference is marked as d, so that a reading graduated scale is formed: defining a scale 0 as a horizontal position coordinate point where the dark and light change points on the scale chart are equal to the light and dark change points in the reference chart;
s2: displaying a test signal sequence on a stereoscopic display device, wherein bright and dark areas of test units with the same positions in the image pair are displayed in an overlapping mode;
s3: on the stereoscopic display equipment, when the horizontal coordinate positions of the bright and dark area change points and the dark and bright area change points of one pair of test units are overlapped, the serial number of the test unit is recorded, and according to the predefinition of the test unit, the frame frequency of the left eye image and the frame frequency of the right eye image are combined to obtain the frame level delay difference;
and recording the serial numbers of the testing units with the overlapped horizontal coordinate positions of the bright and dark area change points and the dark and bright area change points of the testing units, and reading out whether the left and right eye image display delay difference and the delay difference exist in the stereoscopic display system or not according to the distance between the testing units and the scale 0.
2. The method for measuring a delay difference between left and right eye images for stereoscopic display according to claim 1, wherein in S1, the method further comprises: according to the image sequence corresponding to the reference image, a source reference image sequence is produced; and manufacturing a source graduation chart sequence according to the image sequence corresponding to the graduation chart.
3. The method for measuring the delay difference between the left-eye image and the right-eye image in the stereoscopic display according to claim 2, wherein the difference between the test units in the sequence of the reference graph and the graduated graph comprises:
the positions of bright and dark connections of each test unit on the image corresponding to the source reference image sequence are the same;
the dark and light connection positions of each test unit on the image corresponding to the source scale chart sequence are different, the position offset is sequentially increased/decreased according to the fixed length, and the dark and light connection position of one test unit is the same as the light and dark connection position of each test unit of the source reference chart sequence.
4. The method for measuring the delay difference between left and right eye images in stereoscopic display according to claim 3, wherein the displaying in step S2 includes:
and overlapping the image corresponding to the source graduation chart sequence with each test unit in the image corresponding to the source reference chart sequence, wherein the position of the dark-light connection of the test unit is overlapped with the position of the light-dark connection of the corresponding test unit in the source reference chart sequence.
5. The method for measuring the delay difference between the left and right eye images in the stereoscopic display according to claim 4, wherein the step S3 comprises: and on the stereoscopic display system, the bright and dark areas of the test unit with the same image centering position are displayed in an overlapping manner, and the frame-level delay difference is obtained according to the unit serial numbers of the bright and dark area change points of the test unit in the image centering and the horizontal coordinate position coincidence of the dark and bright area change points.
6. A device for measuring delay difference of left and right eye images in stereoscopic display is characterized by comprising:
the image processing device comprises a setting module, a processing module and a display module, wherein the setting module is used for respectively setting a left-eye image sequence and a right-eye image sequence with the frame-by-frame horizontal displacement characteristic, and the frame rates of the two image sequences are the same; in the left-eye image sequence and the right-eye image sequence, a left-eye image and a right-eye image with the same frame number are called an image pair, the left-eye image and the right-eye image in the image pair both comprise 2n +1 test units, and the 2n +1 test units in the left-eye image are called left-eye test unit groups; the 2n +1 test units in the right eye image have the same positions as the test units in the left eye image and are in one-to-one correspondence, and the test units are called right eye test unit groups; two test units in the two test unit groups, which correspond to each other one by one, are called a pair of test units;
the test signal sequence includes: the left eye image sequence is set by the left eye image, and the right eye image sequence is set by the right eye image;
two image sequences, wherein one image sequence is a reference image, and the other image sequence is a scale chart;
the 2n +1 test units in the graduated graph correspond to the horizontal position coordinate points changed from the dark blocks to the bright blocks, namely, the dark and bright change points are in an arithmetic progression, and the difference is marked as d, so that a reading graduated scale is formed: defining a scale 0 as a horizontal position coordinate point where the dark and light change points on the scale chart are equal to the light and dark change points in the reference chart;
the display module is used for displaying a test signal sequence on the stereoscopic display equipment, and bright and dark areas of the test units with the same positions in the image pair are displayed in an overlapped mode;
the frame-level delay difference calculation module is used for recording the serial number of a pair of test units on the three-dimensional display equipment when the horizontal coordinate positions of the bright and dark area change points and the dark and bright area change points of the test units are superposed, and obtaining the frame-level delay difference by combining the frame frequency of the left-eye image and the frame frequency of the right-eye image according to the predefinishment of the test units;
and recording the serial numbers of the testing units with the overlapped horizontal coordinate positions of the bright and dark area change points and the dark and bright area change points of the testing units, and reading out whether the left and right eye image display delay difference and the delay difference exist in the stereoscopic display system or not according to the distance between the testing units and the scale 0.
7. The apparatus for measuring the delay difference between left and right eye images according to claim 6, wherein the setting module further comprises: according to the image sequence corresponding to the reference image, a source reference image sequence is produced; and manufacturing a source graduation chart sequence according to the image sequence corresponding to the graduation chart.
8. The apparatus of claim 7, wherein the sequence of reference and scale maps has a test cell disparity comprising:
the positions of bright and dark connections of each test unit on the image corresponding to the source reference image sequence are the same;
the dark and light connection positions of each test unit on the image corresponding to the source scale chart sequence are different, the position offset is sequentially increased/decreased according to the fixed length, and the dark and light connection position of one test unit is the same as the light and dark connection position of each test unit of the source reference chart sequence.
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