CN115118939A - Image brightness homogenizing method, computer readable storage medium, electronic device and laser projection image processing device - Google Patents
Image brightness homogenizing method, computer readable storage medium, electronic device and laser projection image processing device Download PDFInfo
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- CN115118939A CN115118939A CN202110286234.7A CN202110286234A CN115118939A CN 115118939 A CN115118939 A CN 115118939A CN 202110286234 A CN202110286234 A CN 202110286234A CN 115118939 A CN115118939 A CN 115118939A
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000000265 homogenisation Methods 0.000 claims abstract description 3
- 238000004590 computer program Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
Abstract
The invention discloses an image brightness homogenizing method, a computer readable storage medium, electronic equipment and a laser projection image processing device, and relates to the field of optical fiber scanning laser projection. According to the image brightness homogenization method, the computer readable storage medium, the electronic device and the laser projection image processing device, the brightness adjustment coefficient is added to each pixel, and the uncorrected lighting brightness corresponding to each pixel is modulated, so that the brightness uniformity of a display system is corrected, and the display brightness is uniform and consistent; in addition, the invention does not adopt a method of directly modifying the pixel lighting time to realize the correction of the uniformity of the display brightness, thereby avoiding the requirement of high modulation bandwidth brought by using the equal lighting time in scanning display, ensuring that the display image has consistent and enough display color depth, and leading the display image to output color according to the color depth required by the target.
Description
Technical Field
The invention relates to the field of optical fiber scanning laser projection, in particular to an image brightness homogenizing method, a computer readable storage medium, electronic equipment and a laser projection image processing device.
Background
In a scanning display system, particularly a high-color-depth scanning display system, whether a helical scanning system or a grid scanning system or a lissajous scanning system is adopted, the corresponding unit pixel display has a close relationship with the scanning speed.
Specifically, in a system based on laser scanning imaging, the size and the gray scale of a pixel are controlled by means of the lighting time of laser and the motion track of a light spot, taking raster scanning as an example, because the scanning speed is different, the motion speed of the light spot is smaller at the edge of an image, and the motion speed of the light spot is larger near the center of the image, and the pixel size is required to be a square with the same rule in order not to cause image distortion, when the scanning is near the center of the image, the lighting time of the laser is shorter, and when the scanning is near the edge of the image, the lighting time of the laser is longer, and human eyes sense the brightness is mainly determined by the integral time of light rays in human eyes, so the problem in the prior art of the scanning display system is that: since the scanning speed is different at each position of the display area, the lighting time period is different in the pixel block corresponding to each position, so that the uniformity of the display luminance becomes worse.
Disclosure of Invention
The invention aims to provide an image brightness uniformizing method, which solves the problem that the uniformity of the display brightness is poor due to different scanning speeds at various positions of a display area in a scanning type display system.
Another object of the present invention is to provide a computer-readable storage medium, an electronic device, and a laser projection image processing apparatus, which can ensure that a corresponding display system has a uniform brightness display effect, and which can avoid a high modulation bandwidth requirement caused by a constant lighting time period in a scanning display, and at the same time ensure that a display image has a consistent and sufficient display color depth, so that it can perform color output according to the color depth required by a target.
In order to achieve the above object, the present invention provides an image brightness uniformizing method, including:
acquiring and processing original light source gray scale and original light source lighting power data of a display system to obtain a color power response curve;
calculating the lighting time length corresponding to each pixel distributed in different areas to obtain the uncorrected lighting brightness corresponding to each pixel;
acquiring a brightness control table, wherein the brightness control table comprises pixel addresses and brightness adjusting coefficients corresponding to each pixel address, and each brightness adjusting coefficient is as follows: the ratio of the minimum lighting time with the shortest time in each lighting time to the lighting time corresponding to the current pixel;
the uncorrected lighting brightness corresponding to each pixel is modulated in conjunction with the uncorrected lighting brightness of each pixel and the corresponding brightness control table.
Further, in a preferred embodiment of the present invention, the process of acquiring and processing the original light source gray scale and the original light source lighting power data of the display system includes:
collecting data of a display system through a power meter, a camera or an illuminometer;
and fitting or differencing the acquired data.
Further, in a preferred embodiment of the present invention, the modulating the to-be-corrected lighting brightness corresponding to each pixel includes: the uncorrected lighting luminance corresponding to each pixel is multiplied by the luminance adjustment coefficient corresponding thereto.
Further, in the preferred embodiment of the present invention, the image brightness equalization method is applied to a high color depth scanning display system;
when the image brightness homogenizing method is applied to a high-color-depth scanning type display system, the original color depth is higher than the target color depth, and the ratio of the original color depth to the target color depth and the ratio of the minimum lighting time length to the maximum lighting time length are in negative correlation.
Further, in a preferred embodiment of the present invention, the image brightness equalizing method is applied to a scanning display system with a spiral scanning mode, a grid scanning mode or a lissajous scanning mode.
Further, in a preferred embodiment of the present invention, when the image brightness equalizing method is applied to a scanning display system with a grid-type scanning mode, the minimum lighting time period is the lighting time period of the display center pixel.
A computer-readable storage medium, in which a computer program stored is processed and executed to implement the image brightness uniformization method as described above.
An electronic device comprising a memory and a processor, wherein the memory comprises the computer-readable storage medium described above.
A laser projection image processing apparatus, comprising:
the image data module is used for acquiring and processing display image data to obtain uncorrected lighting brightness corresponding to each pixel;
the brightness control table module comprises pixel addresses and brightness adjusting coefficients corresponding to the pixel addresses; wherein each brightness adjustment coefficient is: the ratio of the minimum lighting time with the shortest time in each pixel to the lighting time corresponding to the current pixel;
and the image data modulation processing module is used for combining each uncorrected lighting brightness and the brightness control table module and modulating the uncorrected lighting brightness corresponding to each pixel.
Further, in a preferred embodiment of the present invention, the image data modulation processing module when modulating the uncorrected luminance corresponding to each pixel includes: the uncorrected lighting luminance corresponding to each pixel is multiplied by the luminance adjustment coefficient corresponding thereto.
Compared with the prior art, the invention has the following beneficial effects:
the brightness adjusting coefficient is added to each pixel, and the uncorrected lighting brightness corresponding to each pixel is modulated, so that the brightness uniformity of the display system is corrected, and the display brightness is ensured to be uniform and consistent; in addition, the invention does not adopt a method of directly modifying the pixel lighting time to realize the correction of the uniformity of the display brightness, thereby avoiding the requirement of high modulation bandwidth brought by using the equal lighting time in scanning display, ensuring that the display image has consistent and enough display color depth, and leading the display image to output color according to the color depth required by the target.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor:
fig. 1 is a schematic diagram illustrating steps of a method for uniformizing brightness of an image according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1, an embodiment of the present invention provides a method for uniformizing image brightness, including:
s1, acquiring and processing the original light source gray scale and the original light source lighting power data of the display system to obtain a color power response curve. It should be noted that the process of acquiring and processing the original light source gray scale and the original light source lighting power data of the display system specifically includes: and acquiring data of the display system through a power meter, a camera or an illuminometer, and fitting or differencing the acquired data.
And S2, calculating the lighting time length corresponding to each pixel distributed in different areas to obtain the uncorrected lighting brightness corresponding to each pixel. Specifically, by calculating the lighting time period corresponding to each pixel, the uncorrected lighting luminance corresponding to each pixel can be obtained in combination with the lighting power in S1.
S3, obtaining a brightness control table, wherein the brightness control table comprises pixel addresses and brightness adjusting coefficients corresponding to each pixel address, and each brightness adjusting coefficient is as follows: the ratio of the minimum lighting time length with the shortest time in the lighting time lengths corresponding to the pixels to the lighting time length corresponding to the current pixel. It should be noted that, acquiring the brightness control table includes determining the lighting time corresponding to each pixel address according to the acquired row-column index number, and determining the brightness adjustment coefficient according to the lighting time of each pixel address.
S4, combining the uncorrected lighting brightness of each pixel and the corresponding brightness control table, modulating the uncorrected lighting brightness corresponding to each pixel. It should be noted that, the modulating the to-be-corrected lighting brightness corresponding to each pixel includes: the uncorrected lighting luminance corresponding to each pixel is multiplied by the luminance adjustment coefficient corresponding thereto.
And finally, sequentially projecting and displaying each pixel of the modulated lighting brightness according to the pixel address to obtain a projected image.
Further, the image brightness uniformizing method provided by the embodiment of the present invention is preferably applied to a high color depth scanning type display system, and can be applied to a scanning display system in which the scanning mode is a spiral type, a grid type, or a lissajous type. Optionally, when the image brightness equalizing method provided in this embodiment is applied to a scanning display system in which the scanning manner is a grid type, the minimum lighting time duration is the lighting time duration of the display center pixel. It should be emphasized that, when the method for homogenizing image brightness provided by the embodiment of the present invention is applied to a high color depth scanning type display system, in order to ensure that the color depth of each pixel region is consistent and sufficient, it is further defined that the original color depth of each pixel is higher than the corresponding target color depth, and the ratio of the original color depth to the target color depth and the ratio of the minimum lighting duration to the maximum lighting duration are in negative correlation. It should be noted that, by adding the brightness adjustment coefficient and limiting the ratio of the original color depth to the target color depth, uniformity and consistency of the brightness and the color depth of each pixel of the display image are ensured, and sufficient color depth of the display image is ensured, so that the display image can output color according to the color depth required by the target.
The applicant needs to emphasize that, in order to realize the uniformity of the display brightness, there are at least two ways from the technical direction, that is, the uniformity of the final brightness of each pixel can be realized by modifying the lighting time length or the lighting power of the light source of each pixel. If the pixel lighting time length is modified, only the lighting time length of all the pixels needs to be set as the minimum lighting time length, but the technical means puts higher requirements on the modulation bandwidth of a laser light source and is difficult to be applied to a high-resolution display system.
The embodiment of the invention also provides a computer readable storage medium, and when a computer program stored in the computer readable storage medium is processed and executed, the method for homogenizing the image brightness is realized.
An embodiment of the present invention further provides an electronic device, which includes a memory and a processor, where the memory includes the computer-readable storage medium.
Correspondingly, an embodiment of the present invention further provides a laser projection image processing apparatus, and specifically, the laser projection image processing apparatus includes:
an image data module for acquiring and processing display image data to obtain uncorrected lighting brightness corresponding to each pixel;
and a brightness control table module including pixel addresses and brightness adjustment coefficients corresponding to each pixel address. It should be emphasized that each brightness adjustment coefficient is: the ratio of the minimum lighting time with the shortest time in each pixel to the lighting time corresponding to the current pixel.
And the image data modulation processing module is used for combining each uncorrected lighting brightness and the brightness control table module and modulating the uncorrected lighting brightness corresponding to each pixel. Specifically, the image data modulation processing module, when modulating the uncorrected lighting brightness corresponding to each pixel, includes: the uncorrected lighting luminance corresponding to each pixel is multiplied by the luminance adjustment coefficient corresponding thereto.
It should be noted that, the computer-readable storage medium, the electronic device, and the laser projection image processing apparatus provided in the embodiments of the present invention are essentially product carriers to which the image brightness equalization method provided in the present invention is applied, and therefore, have the beneficial effects of the image brightness equalization method provided in the present invention.
In summary, according to the image brightness uniformization method, the computer-readable storage medium, the electronic device and the laser projection image processing apparatus provided by the embodiments of the present invention, the brightness adjustment coefficient is added to each pixel to modulate the uncorrected lighting brightness corresponding to each pixel, so as to correct the brightness uniformity of the display system and ensure that the display brightness is uniform and consistent; in addition, the invention does not adopt a method of directly modifying the pixel lighting time to realize the correction of the uniformity of the display brightness, thereby avoiding the requirement of high modulation bandwidth brought by using the equal lighting time in scanning display, ensuring that the display image has consistent and enough display color depth, and leading the display image to output color according to the color depth required by the target.
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (10)
1. A method for homogenizing the brightness of an image, comprising:
acquiring and processing original light source gray scale and original light source lighting power data of a display system to obtain a color power response curve;
calculating the lighting time length corresponding to each pixel distributed in different areas to obtain the uncorrected lighting brightness corresponding to each pixel;
obtaining a brightness control table, wherein the brightness control table comprises pixel addresses and brightness adjusting coefficients corresponding to each pixel address, and each brightness adjusting coefficient is as follows: the ratio of the minimum lighting time with the shortest time in each lighting time to the lighting time corresponding to the current pixel;
modulating the uncorrected lighting luminance corresponding to each of the pixels in combination with the uncorrected lighting luminance of each of the pixels and the corresponding luminance control table.
2. The method of claim 1, wherein the acquiring and processing the raw light source gray scale and the raw light source lighting power data of the display system comprises:
collecting data from the display system by a power meter, a camera or an illuminometer;
and fitting or differencing the acquired data.
3. The method of claim 1, wherein the modulating the brightness of the to-be-corrected lighting corresponding to each pixel comprises: multiplying the uncorrected lighting luminance corresponding to each of the pixels by the luminance adjustment coefficient corresponding thereto.
4. The image brightness uniformization method according to any one of claims 1-3, wherein the image brightness uniformization method is applied to a high color depth scanning type display system;
when the image brightness homogenization method is applied to a high-color-depth scanning type display system, the original color depth is higher than the target color depth, and the ratio of the original color depth to the target color depth and the ratio of the minimum lighting time length to the maximum lighting time length are in negative correlation.
5. The method according to claim 4, wherein the method is applied to a scanning display system in which the scanning mode is a spiral mode, a grid mode or a Lissajous mode.
6. The method according to claim 5, wherein when the method is applied to a scanning display system in which the scanning mode is a raster mode, the minimum lighting time period is a lighting time period of a display center pixel.
7. A computer-readable storage medium, wherein a computer program stored in the computer-readable storage medium, when being processed and executed, implements the image luminance uniformizing method as recited in any one of claims 1 to 6.
8. An electronic device comprising a memory and a processor, wherein the memory comprises the computer-readable storage medium of claim 7.
9. A laser projection image processing apparatus, characterized by comprising:
the image data module is used for acquiring and processing display image data to obtain uncorrected lighting brightness corresponding to each pixel;
the brightness control table module comprises pixel addresses and brightness adjusting coefficients corresponding to the pixel addresses; wherein each brightness adjustment coefficient is: the ratio of the minimum lighting time with the shortest time in each pixel to the lighting time corresponding to the current pixel;
and an image data modulation processing module for modulating the uncorrected lighting brightness corresponding to each pixel in combination with each uncorrected lighting brightness and the brightness control table module.
10. The laser projection image processing apparatus according to claim 9, wherein said image data modulation processing module, when modulating said uncorrected lighting luminance corresponding to each of said pixels, comprises: multiplying the uncorrected lighting luminance corresponding to each of the pixels by the luminance adjustment coefficient corresponding thereto.
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Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2009302A1 (en) * | 1990-02-05 | 1991-08-05 | Alain Martel | Light color and intensity modulation system |
| JP2003140111A (en) * | 2001-11-01 | 2003-05-14 | Seiko Epson Corp | Spatial optical modulation element, image display device, optical element for making illuminace distribution uniform, illuminator, display defect assisting device and projector |
| JP2005055830A (en) * | 2003-08-07 | 2005-03-03 | Sony Corp | Method and device of displaying picture |
| CN101001454A (en) * | 2006-06-22 | 2007-07-18 | 华为技术有限公司 | User dispatching method and system in uplink enhanced link |
| CN101026771A (en) * | 2006-02-25 | 2007-08-29 | 三星电子株式会社 | Light source, image apparatus using the light source, and method of driving the same |
| CN101540920A (en) * | 2008-03-19 | 2009-09-23 | 船井电机株式会社 | Image display device |
| US20100134643A1 (en) * | 2007-06-21 | 2010-06-03 | Nikon Corporation | Image processing method, image processing program, image processing device, image processing system, electronic camera and electronic apparatus |
| WO2012117845A1 (en) * | 2011-03-03 | 2012-09-07 | 日本電気株式会社 | Multi-projection display and luminosity adjustment method thereof |
| CN103891276A (en) * | 2011-10-03 | 2014-06-25 | 伊斯曼柯达公司 | Stereoscopic projector using spectrally-adjacent color bands |
| CN104678553A (en) * | 2013-11-26 | 2015-06-03 | 吴小平 | Group scanning laser projection television and multi-area light valve screen matched with same |
| WO2015120646A1 (en) * | 2014-02-14 | 2015-08-20 | 京东方科技集团股份有限公司 | True three-dimensional stereoscopic imaging device and display device |
| WO2015173942A1 (en) * | 2014-05-16 | 2015-11-19 | 日立マクセル株式会社 | Scanning display device |
| CN105893905A (en) * | 2016-05-12 | 2016-08-24 | 全普光电科技(上海)有限公司 | Radio frequency identification sensor and projection device with same |
| CN107241586A (en) * | 2016-03-29 | 2017-10-10 | 日立乐金光科技株式会社 | Image display |
| CN107836113A (en) * | 2015-04-21 | 2018-03-23 | 伊莱克特莱泰克产品公司 | Mix nanocomposite mate-rial, laser scanning system and its purposes in stereoscopic image projection |
| CN110446019A (en) * | 2019-07-17 | 2019-11-12 | 成都理想境界科技有限公司 | A kind of optical fiber scanning optical projection system and its modulator approach |
| CN110515260A (en) * | 2018-05-21 | 2019-11-29 | 成都理想境界科技有限公司 | A kind of method and laser scanning imaging equipment of laser scanning imaging |
| US20200320941A1 (en) * | 2019-04-04 | 2020-10-08 | Hisense Visual Technology Co., Ltd. | Method of enhancing contrast and a dual-cell display apparatus |
| CN111913301A (en) * | 2019-05-07 | 2020-11-10 | 成都理想境界科技有限公司 | Near-to-eye display equipment |
| CN112153239A (en) * | 2020-09-21 | 2020-12-29 | 北京辰光融信技术有限公司 | Method and device for correcting document scanning image, storage medium and electronic equipment |
| CN112147834A (en) * | 2019-06-28 | 2020-12-29 | 成都理想境界科技有限公司 | Light source, projection display device and light source modulation method |
-
2021
- 2021-03-17 CN CN202110286234.7A patent/CN115118939B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2009302A1 (en) * | 1990-02-05 | 1991-08-05 | Alain Martel | Light color and intensity modulation system |
| JP2003140111A (en) * | 2001-11-01 | 2003-05-14 | Seiko Epson Corp | Spatial optical modulation element, image display device, optical element for making illuminace distribution uniform, illuminator, display defect assisting device and projector |
| JP2005055830A (en) * | 2003-08-07 | 2005-03-03 | Sony Corp | Method and device of displaying picture |
| CN101026771A (en) * | 2006-02-25 | 2007-08-29 | 三星电子株式会社 | Light source, image apparatus using the light source, and method of driving the same |
| CN101001454A (en) * | 2006-06-22 | 2007-07-18 | 华为技术有限公司 | User dispatching method and system in uplink enhanced link |
| US20100134643A1 (en) * | 2007-06-21 | 2010-06-03 | Nikon Corporation | Image processing method, image processing program, image processing device, image processing system, electronic camera and electronic apparatus |
| CN101540920A (en) * | 2008-03-19 | 2009-09-23 | 船井电机株式会社 | Image display device |
| WO2012117845A1 (en) * | 2011-03-03 | 2012-09-07 | 日本電気株式会社 | Multi-projection display and luminosity adjustment method thereof |
| CN103891276A (en) * | 2011-10-03 | 2014-06-25 | 伊斯曼柯达公司 | Stereoscopic projector using spectrally-adjacent color bands |
| CN104678553A (en) * | 2013-11-26 | 2015-06-03 | 吴小平 | Group scanning laser projection television and multi-area light valve screen matched with same |
| WO2015120646A1 (en) * | 2014-02-14 | 2015-08-20 | 京东方科技集团股份有限公司 | True three-dimensional stereoscopic imaging device and display device |
| WO2015173942A1 (en) * | 2014-05-16 | 2015-11-19 | 日立マクセル株式会社 | Scanning display device |
| CN107836113A (en) * | 2015-04-21 | 2018-03-23 | 伊莱克特莱泰克产品公司 | Mix nanocomposite mate-rial, laser scanning system and its purposes in stereoscopic image projection |
| CN107241586A (en) * | 2016-03-29 | 2017-10-10 | 日立乐金光科技株式会社 | Image display |
| CN105893905A (en) * | 2016-05-12 | 2016-08-24 | 全普光电科技(上海)有限公司 | Radio frequency identification sensor and projection device with same |
| CN110515260A (en) * | 2018-05-21 | 2019-11-29 | 成都理想境界科技有限公司 | A kind of method and laser scanning imaging equipment of laser scanning imaging |
| US20200320941A1 (en) * | 2019-04-04 | 2020-10-08 | Hisense Visual Technology Co., Ltd. | Method of enhancing contrast and a dual-cell display apparatus |
| CN111913301A (en) * | 2019-05-07 | 2020-11-10 | 成都理想境界科技有限公司 | Near-to-eye display equipment |
| CN112147834A (en) * | 2019-06-28 | 2020-12-29 | 成都理想境界科技有限公司 | Light source, projection display device and light source modulation method |
| CN110446019A (en) * | 2019-07-17 | 2019-11-12 | 成都理想境界科技有限公司 | A kind of optical fiber scanning optical projection system and its modulator approach |
| CN112153239A (en) * | 2020-09-21 | 2020-12-29 | 北京辰光融信技术有限公司 | Method and device for correcting document scanning image, storage medium and electronic equipment |
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