CN106231212A - A kind of method and device of image procossing - Google Patents
A kind of method and device of image procossing Download PDFInfo
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- CN106231212A CN106231212A CN201610822694.6A CN201610822694A CN106231212A CN 106231212 A CN106231212 A CN 106231212A CN 201610822694 A CN201610822694 A CN 201610822694A CN 106231212 A CN106231212 A CN 106231212A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/50—Control of the SSIS exposure
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Abstract
The invention discloses the method and device of a kind of image procossing.The method includes: set gradually AD gain parameter, AD offset parameter and constant-current source DC parameter；The regulation constant-current source bright data of GS parameter acquiring and dark data；Obtain view data, and according to default updating formula, described bright data and described dark data, described image is processed；Described view data after output calibration.The present invention reaches to eliminate the purpose of background data by the value increasing the dark data in updating formula, and dark data are to obtain at suitable shorter increase exposure time；CIS imageing sensor gathers view data by the program, calibrated after can reach background data is completely eliminated, view data concordance is preferable.
Description
Technical field
The present embodiments relate to the technical field of image procossing, particularly relate to the method and device of a kind of image procossing.
Background technology
The application of CIS imageing sensor needs A/D chip to complete sampling and analog digital conversion, constant-current source chip complete to drive point
Bright light source.A/D chip has gain and two depositors of biasing, and wherein biasing may be configured as positive bias and negative bias.Constant-current source chip
Having DC parameter and GS parameter, DC parameter provides the electric current driving light source, when GS parameter provides light source exposure with the form of PWM ripple
Long.CIS gather image must calibrated after just meet application time image consistency requirement.
When image processes after algorithm part is to correction, generally require elimination background data.At present, scheme eliminates school
The background data regulation offset register parameter of positive image is that negative bias realizes, but this method tends not to the most complete
Eliminate image background data.If offset parameter being set to bigger negative bias reach to eliminate the purpose of background data, but have
The concordance effect that may result in collection view data becomes very poor.
Summary of the invention
The purpose of the embodiment of the present invention is to propose the method and device of a kind of image procossing, it is intended to solve how to improve school
The problem of positive image effect.
For reaching this purpose, the embodiment of the present invention by the following technical solutions:
First aspect, a kind of method of image procossing, described method includes:
Set gradually AD gain parameter, AD offset parameter and constant-current source DC parameter；
The regulation constant-current source bright data of GS parameter acquiring and dark data；
Obtain view data, and according to default updating formula, described bright data and described dark data, described image is carried out
Process；
Described view data after output calibration.
Preferably, described in set gradually AD gain parameter, AD offset parameter and constant-current source DC parameter, including:
First described constant-current source DC parameter is set and described constant-current source GS parameter is maximum, and preset principle meeting
In the case of select described AD gain parameter；Next arranges described AD offset parameter is 0；Then in the feelings meeting described default principle
Described constant-current source DC parameter is selected under condition；
When described default principle is for gathering image, view data average to be met is in 0～255 range of accommodation.
Preferably, the described regulation constant-current source dark data of GS parameter acquiring, including:
Under described AD gain parameter, described AD offset parameter and the described constant-current source DC parameter arranged, by arranging the
One constant-current source GS parameter obtains described dark data, and described first constant-current source GS parameter meets the x in described default updating formulai-di
Value is 0；Wherein, described xiFor gathering raw image data；Described diFor dark data.
Preferably, the described regulation constant-current source bright data of GS parameter acquiring, including:
Under described AD gain parameter, described AD offset parameter and the described constant-current source DC parameter arranged, by arranging the
Two constant-current source GS parameters obtain described bright data, need to meet described default principle when choosing described second constant-current source GS parameter.
Preferably, described default updating formula is:
Y=((xi-di)×256)/(wi-di)
Wherein, described y is image correcting data；Described xiFor gathering raw image data；Described wiFor bright data；Described
diFor dark data.
Second aspect, the device of a kind of image procossing, described device includes:
Module is set, is used for setting gradually AD gain parameter, AD offset parameter and constant-current source DC parameter；
Adjustment module, is used for regulating the constant-current source bright data of GS parameter acquiring and dark data；
Processing module, is used for obtaining view data, and according to default updating formula, described bright data and described dark data pair
Described image processes；
Output module, described view data after output calibration.
Preferably, described module is set, specifically for:
First described constant-current source DC parameter is set and described constant-current source GS parameter is maximum, and preset principle meeting
In the case of select described AD gain parameter；Next arranges described AD offset parameter is 0；Then in the feelings meeting described default principle
Described constant-current source DC parameter is selected under condition；
When described default principle is for gathering image, view data average to be met is in 0～255 range of accommodation.
Preferably, described adjustment module, specifically for:
Under described AD gain parameter, described AD offset parameter and the described constant-current source DC parameter arranged, by arranging the
One constant-current source GS parameter obtains described dark data, and described first constant-current source GS parameter meets the x in described default updating formulai-di
Value is 0；Wherein, described xiFor gathering raw image data；Described diFor dark data.
Preferably, described adjustment module, also particularly useful for:
Under described AD gain parameter, described AD offset parameter and the described constant-current source DC parameter arranged, by arranging the
Two constant-current source GS parameters obtain described bright data, need to meet described default principle when choosing described second constant-current source GS parameter.
Preferably, described default updating formula is:
Y=((xi-di)×256)/(wi-di)；
Wherein, described y is image correcting data；Described xiFor gathering raw image data；Described wiFor bright data；Described
diFor dark data.
The embodiment of the present invention provides the method and device of a kind of image procossing, sets gradually AD gain parameter, and AD biases ginseng
Number and constant-current source DC parameter；The regulation constant-current source bright data of GS parameter acquiring and dark data；Obtain view data, and according to default school
Described image is processed by positive formula, described bright data and described dark data；Described view data after output calibration.The present invention
Reach to eliminate the purpose of background data by the value increasing the dark data in updating formula, dark data are suitable shorter
Increase exposure time to obtain；CIS imageing sensor gathers view data by the program, calibrated after can reach the back of the body is completely eliminated
Scape data, view data concordance is preferable.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the embodiment of the present invention provides a kind of method of image procossing；
Fig. 2 is the schematic flow sheet of the method for the another kind of image procossing that the embodiment of the present invention provides；
Fig. 3 is the image schematic diagram before a kind of correction that the embodiment of the present invention provides；
Fig. 4 is the image schematic diagram after a kind of correction that the embodiment of the present invention provides
Fig. 5 is the high-level schematic functional block diagram of the device of a kind of image procossing that the embodiment of the present invention provides.
Detailed description of the invention
With embodiment, the embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.It is understood that this
Specific embodiment described by place is used only for explaining the embodiment of the present invention, rather than the restriction to the embodiment of the present invention.Additionally also
It should be noted that for the ease of describing, accompanying drawing illustrate only the part relevant to the embodiment of the present invention rather than entire infrastructure.
It it is the schematic flow sheet of the method for a kind of image procossing that the embodiment of the present invention provides with reference to Fig. 1, Fig. 1.
As it is shown in figure 1, the method for described image procossing includes:
Step 101, sets gradually AD gain parameter, AD offset parameter and constant-current source DC parameter；
Preferably, described in set gradually AD gain parameter, AD offset parameter and constant-current source DC parameter, including:
First described constant-current source DC parameter is set and described constant-current source GS parameter is maximum, and preset principle meeting
In the case of select described AD gain parameter；Next arranges described AD offset parameter is 0；Then in the feelings meeting described default principle
Described constant-current source DC parameter is selected under condition；
When described default principle is for gathering image, view data average to be met is in 0～255 range of accommodation.
Step 102, the regulation constant-current source bright data of GS parameter acquiring and dark data；
Preferably, the described regulation constant-current source dark data of GS parameter acquiring, including:
Under described AD gain parameter, described AD offset parameter and the described constant-current source DC parameter arranged, by arranging the
One constant-current source GS parameter obtains described dark data, and described first constant-current source GS parameter meets the x in described default updating formulai-di
Value is 0；Wherein, described xiFor gathering raw image data；Described diFor dark data.
Preferably, the described regulation constant-current source bright data of GS parameter acquiring, including:
Under described AD gain parameter, described AD offset parameter and the described constant-current source DC parameter arranged, by arranging the
Two constant-current source GS parameters obtain described bright data, need to meet described default principle when choosing described second constant-current source GS parameter.
Step 103, obtains view data, and according to default updating formula, described bright data and described dark data to described
Image processes；
Wherein, described default updating formula is:
Y=((xi-di)×256)/(wi-di)
Wherein, described y is image correcting data；Described xiFor gathering raw image data；Described wiFor bright data；Described
diFor dark data.
Step 104, described view data after output calibration.
The embodiment of the present invention provides a kind of method of image procossing, sets gradually AD gain parameter, AD offset parameter and perseverance
Stream source DC parameter；The regulation constant-current source bright data of GS parameter acquiring and dark data；Obtain view data, and according to default correction public affairs
Described image is processed by formula, described bright data and described dark data；Described view data after output calibration.The present invention passes through
The value increasing the dark data in updating formula reaches to eliminate the purpose of background data, and dark data are in suitable shorter increase
Exposure time obtains；CIS imageing sensor uses the program to gather view data, calibrated after can reach background number is completely eliminated
According to, view data concordance is preferable.
It it is the schematic flow sheet of the method for the another kind of image procossing that the embodiment of the present invention provides with reference to Fig. 2, Fig. 2.
As in figure 2 it is shown, the method for described image procossing includes:
Step 201, fixing AD gain parameter and constant-current source DC parameter, and AD offset parameter is set；
Step 202, first selects AD gain parameter, then after arranging AD offset parameter, then arrange described constant-current source DC parameter and
Described constant-current source GS parameter；
Preferably, described first select AD gain parameter, then after AD offset parameter is set, more described constant-current source DC parameter is set
With described constant-current source GS parameter, including:
If the collection background that blank sheet of paper is CIS imageing sensor, constant-current source DC parameter and constant-current source GS parameter are set for maximum
Value, and in the case of meeting default principle, select different AD gain parameter, to meet when described default principle is for gathering image
View data average is in 0～255 range of accommodation；
AD gain parameter after fixing selection, arranging described AD offset parameter is 0, the described AD when obtaining described dark data
Offset parameter immobilizes；
When described CIS imageing sensor gathers image, fixing described constant-current source DC parameter, regulate different constant-current source GS
Parameter change exposure time, described constant-current source DC parameter chooses and need to meet described default principle, and described constant-current source GS parameter is chosen
It is required that the x in described updating formulai-diValue is 0；Wherein, described xiFor gathering raw image data；Described diFor dark number
According to.
Step 203, at the described AD gain parameter chosen, described AD offset parameter, constant-current source DC parameter and constant-current source GS
Under parameter, obtain described dark data by default LED duration collection, collect described bright data by LED；
Step 204, obtains view data, and according to default updating formula, described bright data and described dark data to described
Image processes.
Wherein, described updating formula is: y=((xi-di)×256)/(wi-di)；
Described y is image correcting data；Described xiFor gathering raw image data；Described wiFor bright data, light led and obtain
Arrive；Described diFor dark data, do not close led and obtain.
Concrete, as it is shown on figure 3, the image schematic diagram before a kind of correction that Fig. 3 is the embodiment of the present invention to be provided；Fig. 4 is
Image schematic diagram after a kind of correction that the embodiment of the present invention provides.
It it is the high-level schematic functional block diagram of the device of a kind of image procossing that the embodiment of the present invention provides with reference to Fig. 5, Fig. 5.
As it is shown in figure 5, described device includes:
Module 501 is set, is used for setting gradually AD gain parameter, AD offset parameter and constant-current source DC parameter；
Preferably, described module 501 is set, specifically for:
First described constant-current source DC parameter is set and described constant-current source GS parameter is maximum, and preset principle meeting
In the case of select described AD gain parameter；Next arranges described AD offset parameter is 0；Then in the feelings meeting described default principle
Described constant-current source DC parameter is selected under condition；
When described default principle is for gathering image, view data average to be met is in 0～255 range of accommodation.
Adjustment module 502, is used for regulating the constant-current source bright data of GS parameter acquiring and dark data；
Preferably, described adjustment module 502, specifically for:
Under described AD gain parameter, described AD offset parameter and the described constant-current source DC parameter arranged, by arranging the
One constant-current source GS parameter obtains described dark data, and described first constant-current source GS parameter meets the x in described default updating formulai-di
Value is 0；Wherein, described xiFor gathering raw image data；Described diFor dark data.
Preferably, described adjustment module 502, also particularly useful for:
Under described AD gain parameter, described AD offset parameter and the described constant-current source DC parameter arranged, by arranging the
Two constant-current source GS parameters obtain described bright data, need to meet described default principle when choosing described second constant-current source GS parameter.
Processing module 503, is used for obtaining view data, and according to default updating formula, described bright data and described dark number
Process according to described image；
Preferably, described default updating formula is:
Y=((xi-di)×256)/(wi-di)；
Wherein, described y is image correcting data；Described xiFor gathering raw image data；Described wiFor bright data；Described
diFor dark data.
Output module 504, described view data after output calibration.
The embodiment of the present invention provides the device of a kind of image procossing, sets gradually AD gain parameter, AD offset parameter and perseverance
Stream source DC parameter；The regulation constant-current source bright data of GS parameter acquiring and dark data；Obtain view data, and according to default correction public affairs
Described image is processed by formula, described bright data and described dark data；Described view data after output calibration.The present invention passes through
The value increasing the dark data in updating formula reaches to eliminate the purpose of background data, and dark data are in suitable shorter increase
Exposure time obtains；CIS imageing sensor gathers view data by the program, calibrated after can reach background number is completely eliminated
According to, view data concordance is preferable.
The know-why of the embodiment of the present invention is described above in association with specific embodiment.These describe and are intended merely to explain this
The principle of inventive embodiments, and the restriction to embodiment of the present invention protection domain can not be construed to by any way.Based on herein
Explanation, those skilled in the art need not to pay performing creative labour, and can to associate other of the embodiment of the present invention concrete
Embodiment, within these modes fall within the protection domain of the embodiment of the present invention.
Claims (10)
1. the method for an image procossing, it is characterised in that described method includes:
Set gradually AD gain parameter, AD offset parameter and constant-current source DC parameter；
The regulation constant-current source bright data of GS parameter acquiring and dark data；
Obtain view data, and according to default updating formula, described bright data and described dark data, described image is processed；
Described view data after output calibration.
Method the most according to claim 1, it is characterised in that described in set gradually AD gain parameter, AD offset parameter and
Constant-current source DC parameter, including:
First described constant-current source DC parameter is set and described constant-current source GS parameter is maximum, and meeting the situation presetting principle
Lower selection described AD gain parameter；Next arranges described AD offset parameter is 0；Then in the case of meeting described default principle
Select described constant-current source DC parameter；
When described default principle is for gathering image, view data average to be met is in 0～255 range of accommodation.
Method the most according to claim 1, it is characterised in that the described regulation constant-current source dark data of GS parameter acquiring, including:
Under described AD gain parameter, described AD offset parameter and the described constant-current source DC parameter arranged, permanent by arranging first
Stream source GS parameter obtains described dark data, and described first constant-current source GS parameter meets the x in described default updating formulai-diValue is
0；Wherein, described xiFor gathering raw image data；Described diFor dark data.
Method the most according to claim 1, it is characterised in that the described regulation constant-current source bright data of GS parameter acquiring, including:
Under described AD gain parameter, described AD offset parameter and the described constant-current source DC parameter arranged, permanent by arranging second
Stream source GS parameter obtains described bright data, need to meet described default principle when choosing described second constant-current source GS parameter.
Method the most according to claim 3, it is characterised in that described default updating formula is:
Y=((xi-di)×256)/(wi-di)
Wherein, described y is image correcting data；Described xiFor gathering raw image data；Described wiFor bright data；Described diFor
Dark data.
6. the device of an image procossing, it is characterised in that described device includes:
Module is set, is used for setting gradually AD gain parameter, AD offset parameter and constant-current source DC parameter；
Adjustment module, is used for regulating the constant-current source bright data of GS parameter acquiring and dark data；
Processing module, is used for obtaining view data, and according to default updating formula, described bright data and described dark data to described
Image processes；
Output module, described view data after output calibration.
Device the most according to claim 6, it is characterised in that described module is set, specifically for:
First described constant-current source DC parameter is set and described constant-current source GS parameter is maximum, and meeting the situation presetting principle
Lower selection described AD gain parameter；Next arranges described AD offset parameter is 0；Then in the case of meeting described default principle
Select described constant-current source DC parameter；
When described default principle is for gathering image, view data average to be met is in 0～255 range of accommodation.
Device the most according to claim 6, it is characterised in that described adjustment module, specifically for:
Under described AD gain parameter, described AD offset parameter and the described constant-current source DC parameter arranged, permanent by arranging first
Stream source GS parameter obtains described dark data, and described first constant-current source GS parameter meets the x in described default updating formulai-diValue is
0；Wherein, described xiFor gathering raw image data；Described diFor dark data.
Device the most according to claim 6, it is characterised in that described adjustment module, also particularly useful for:
Under described AD gain parameter, described AD offset parameter and the described constant-current source DC parameter arranged, permanent by arranging second
Stream source GS parameter obtains described bright data, need to meet described default principle when choosing described second constant-current source GS parameter.
Device the most according to claim 8, it is characterised in that described default updating formula is:
Y=((xi-di)×256)/(wi-di)；
Wherein, described y is image correcting data；Described xiFor gathering raw image data；Described wiFor bright data；Described diFor
Dark data.
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| CN107147901A (en) * | 2017-05-02 | 2017-09-08 | 深圳怡化电脑股份有限公司 | A kind of sensor calibration method, device, equipment and storage medium |
| CN107277379A (en) * | 2017-08-14 | 2017-10-20 | 深圳怡化电脑股份有限公司 | One parameter configuration method and device |
| CN107452122A (en) * | 2017-07-06 | 2017-12-08 | 深圳怡化电脑股份有限公司 | The ameliorative way of contact-type image sensor and its accuracy of detection |
| CN107507328A (en) * | 2017-08-14 | 2017-12-22 | 深圳怡化电脑股份有限公司 | A kind of paper money discrimination method and device |
| CN107707846A (en) * | 2017-10-12 | 2018-02-16 | 深圳怡化电脑股份有限公司 | A kind of CIS parameter correcting methods, device, equipment and storage medium |
| CN110033414A (en) * | 2019-03-18 | 2019-07-19 | 华中科技大学 | A kind of Infrared Image Non-uniformity Correction method and system based on equalization processing |
| CN111541827A (en) * | 2020-03-26 | 2020-08-14 | 深圳怡化电脑股份有限公司 | Image correction method and device |
| CN112135009A (en) * | 2020-11-25 | 2020-12-25 | 恒银金融科技股份有限公司 | Multichannel CIS image calibration method |
| CN113870122A (en) * | 2021-08-18 | 2021-12-31 | 上海古鳌电子科技股份有限公司 | An image correction method, system and image processing device |
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| CN107147901A (en) * | 2017-05-02 | 2017-09-08 | 深圳怡化电脑股份有限公司 | A kind of sensor calibration method, device, equipment and storage medium |
| CN107452122A (en) * | 2017-07-06 | 2017-12-08 | 深圳怡化电脑股份有限公司 | The ameliorative way of contact-type image sensor and its accuracy of detection |
| CN107507328B (en) * | 2017-08-14 | 2019-10-11 | 深圳怡化电脑股份有限公司 | A kind of paper money discrimination method and device |
| CN107507328A (en) * | 2017-08-14 | 2017-12-22 | 深圳怡化电脑股份有限公司 | A kind of paper money discrimination method and device |
| CN107277379A (en) * | 2017-08-14 | 2017-10-20 | 深圳怡化电脑股份有限公司 | One parameter configuration method and device |
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| CN107707846B (en) * | 2017-10-12 | 2020-08-18 | 深圳怡化电脑股份有限公司 | CIS parameter correction method, device, equipment and storage medium |
| CN110033414A (en) * | 2019-03-18 | 2019-07-19 | 华中科技大学 | A kind of Infrared Image Non-uniformity Correction method and system based on equalization processing |
| CN111541827A (en) * | 2020-03-26 | 2020-08-14 | 深圳怡化电脑股份有限公司 | Image correction method and device |
| CN111541827B (en) * | 2020-03-26 | 2021-12-10 | 深圳怡化电脑股份有限公司 | Image correction method and device |
| CN112135009A (en) * | 2020-11-25 | 2020-12-25 | 恒银金融科技股份有限公司 | Multichannel CIS image calibration method |
| CN112135009B (en) * | 2020-11-25 | 2021-03-16 | 恒银金融科技股份有限公司 | Multichannel CIS image calibration method |
| CN113870122A (en) * | 2021-08-18 | 2021-12-31 | 上海古鳌电子科技股份有限公司 | An image correction method, system and image processing device |
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