CN111064950A - Naked eye 3D display image inspection method - Google Patents
Naked eye 3D display image inspection method Download PDFInfo
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- CN111064950A CN111064950A CN201911398704.8A CN201911398704A CN111064950A CN 111064950 A CN111064950 A CN 111064950A CN 201911398704 A CN201911398704 A CN 201911398704A CN 111064950 A CN111064950 A CN 111064950A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/327—Calibration thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
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- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention relates to the technical field of naked eye 3D display and discloses a naked eye 3D display image inspection method. According to the invention, the parameters of the mobile phone grating film are calibrated through naked eye three-dimensional calibration software, the parameters are recorded and simultaneously transmitted to the naked eye three-dimensional display software, and the naked eye three-dimensional display software corrects the presented content through the parameters so as to achieve the correct naked eye three-dimensional display effect. The method can be adapted to any type of lenticular grating and mobile phone equipment, can quickly and efficiently calibrate naked eye three-dimensional display content to achieve correct naked eye display effect, solves the problem of display effect error caused by mobile phone film sticking deviation, and can greatly promote the application field and market of naked eye 3D display.
Description
Technical Field
The invention relates to the technical field of naked eye 3D display, in particular to a naked eye 3D display image inspection method.
Background
With the rapid development of mobile phone terminals, the ordinary two-dimensional display technology cannot meet the pursuit of people for display effects, compared with the two-dimensional display technology, the naked eye three-dimensional display technology can enable audiences to obtain unprecedented high-fidelity visual experience through advanced optical technologies such as light column lenses and video film sources customized by special algorithms, has the advantages of vivid images, strong immersion, simultaneous observation by multiple people, real-time interaction and the like, and rapidly occupies the display market. At present, the mainstream naked eye three-dimensional mobile phone is realized in the mode of a common mobile phone and a grating film mobile phone shell, the grating mobile phone shell is additionally arranged at the front end of the mobile phone in the mode, the carrying is difficult, the grating film is easy to wear, and meanwhile, the mobile phone shell is manufactured by opening the mould again aiming at different mobile phone equipment, so that the resource is greatly wasted, and the development of the naked eye three-dimensional display technology of the mobile phone is seriously hindered.
If directly paste the grating film in cell-phone screen the place ahead, not only can effectual protection cell-phone screen, convenient to carry simultaneously can not cause grating film's wearing and tearing, also need not the die sinking again and make the cell-phone shell, is a mode that well realizes cell-phone bore hole three-dimensional display effect. Although the method is an excellent implementation method in an ideal state, the method has extremely high requirements on film pasting precision, and slight deviation can cause a naked eye three-dimensional display effect error, so that the viewing experience of audiences is seriously influenced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a naked eye 3D display image inspection method. According to the method, the parameters of the mobile phone grating film are calibrated through naked eye three-dimensional calibration software, the parameters are recorded and simultaneously transmitted to the naked eye three-dimensional display software, and the naked eye three-dimensional display software corrects the presented content through the parameters so as to achieve the correct naked eye three-dimensional display effect. The method is not only suitable for calibration of different 3D mobile phone devices and different lenticular grating parameters, but also can solve the problem of display effect error caused by deviation of a mobile phone sticking to a naked eye 3D film.
In order to achieve the purpose, the invention adopts the technical scheme that: a naked eye 3D display image inspection method comprises the following steps:
a. designing naked eye three-dimensional calibration software according to the display characteristics of naked eye three-dimensional mobile phone equipment;
b. making a universal three-dimensional test image of naked eye three-dimensional mobile phone equipment, and putting the test image into an appointed folder of the mobile phone equipment;
c. calibrating parameters of the mobile phone grating film by using naked eye three-dimensional calibration software;
d. recording the calibrated parameters and transmitting the parameters to naked eye three-dimensional display software;
e. naked eye three-dimensional display software corrects the presented content through calibration parameters to achieve a correct naked eye three-dimensional display effect;
in the naked eye three-dimensional display, to obtain a correct naked eye three-dimensional display effect, RGB components of M sampled viewpoint images are filled into RGB components of a stereo image to obtain a stereo image capable of being correctly displayed according to an actual line number LPI value and an actual inclination angle α of a lenticular grating and a DOT pitch DOT of a display screen of a mobile phone device.
And c, as further optimization, manufacturing a universal three-dimensional test image of the naked eye three-dimensional mobile phone device in the step b, and putting the test image into a specified folder of the mobile phone device. The universal stereo test image is divided into three different calibration images which are respectively black and white images, 1/2 display images and actual effect images for calibration, so that the calibration accuracy can be effectively improved, and the complexity of the process of manufacturing the stereo test image is reduced. 1/2 the graph is produced by dividing a picture with the same resolution as the mobile phone device from the center line, placing 16 numbers 1 in the left part at equal intervals and 16 numbers 2 in the right part at equal intervals. The actual effect picture is made by only intercepting a picture of a binocular video. And placing the manufactured test image into a specified folder of the mobile phone equipment, and reading and displaying the three-dimensional test image of the specified folder by naked eye three-dimensional calibration software.
In the calibration process, although the DOT distances DOT of display screens of different mobile phone devices are different values, the DOT distance DOT of a single mobile phone device is a fixed value, the parameter is set as the DOT distance DOT value of the mobile phone device in the calibration software, and then the calibration work is completed when the correct display effect appears on three different calibration graphs by changing the other two parameter values LPI and the inclination angle α of the calibration software.
After the calibration is completed, clicking a Save button of the calibration software, automatically creating a folder named as P _ Number under a root directory of the mobile phone equipment by the calibration software, and simultaneously generating a text document of Number1.txt under the folder, wherein the text document records DOT pitch DOT values, line Number LPI values and inclination angle α values, and after the calibration data recording is completed, switching to the naked eye three-dimensional display software, and the display software directly reads data of the Number1 text document to complete the transmission process of the parameter data.
And e, as further optimization, the naked eye three-dimensional display software corrects the presented content through the calibration parameters so as to achieve the correct naked eye three-dimensional display effect. After receiving the calibration parameters, the naked eye three-dimensional display software calibrates the naked eye three-dimensional content of the M viewpoint, and the specific calibration steps are as follows: firstly, calculating the number Pitch of RGB sub-pixels on the mobile phone display screen covered by the grid Pitch of the lenticular lens in the horizontal direction. Next, a mapping table in which RGB components of the M viewpoint images correspond to RGB components of the stereoscopic image is calculated. Then, according to the mapping table, the RGB components of the M viewpoint images are padded into the RGB components of the stereoscopic image to complete the correction of the stereoscopic image. And finally, the naked eye three-dimensional mobile phone equipment displays the three-dimensional image correctly in a three-dimensional effect.
The invention has the beneficial effects that: the method can be adapted to any type of lenticular lens and LCD mobile phone equipment, can quickly and efficiently calibrate naked eye three-dimensional display content to achieve correct naked eye display effect, solves the problem of display effect error caused by mobile phone film sticking deviation, and can greatly promote the application field and market of naked eye 3D display.
Drawings
FIG. 1 is a schematic diagram of a naked eye 3D display image inspection method according to the invention;
FIG. 2 is a schematic diagram of naked eye three-dimensional calibration software according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
In the naked eye three-dimensional display, RGB components of M sampled viewpoint images are filled into RGB components of a stereo image to obtain a stereo image capable of being correctly displayed according to an actual line number LPI value and an actual inclination angle α of a lenticular grating and a DOT pitch DOT of a display screen of a mobile phone device.
In this example, referring to fig. 2, in order to test the intuitiveness and accuracy of data, the actual line number LPI of the lenticular lens is visually displayed on the upper left of the calibration software, the actual inclination angle α is visually displayed on the upper right of the calibration software, the DOT distance DOT of the display screen is visually displayed on the lower left of the calibration software, the picture switching button Change and the data saving button Save are designed on the lower right of the calibration software, and meanwhile, for the convenience of the test, the parameter value size adjusting button is correspondingly arranged under or over the display data, for example, the LPI value + button is clicked, the LPI is correspondingly increased, the LPI value-button is clicked, and the LPI value is correspondingly decreased.
In fig. 1, 102 is a general stereo test image for making a naked eye three-dimensional mobile phone device, and the test image is placed in a designated folder of the mobile phone device. The universal stereo test image is divided into three different calibration images which are respectively black and white images, 1/2 display images and actual effect images for calibration, so that the calibration accuracy can be effectively improved, and the complexity of the process of manufacturing the stereo test image is reduced. 1/2 the graph is produced by dividing a picture with the same resolution as the mobile phone device from the center line, placing 16 numbers 1 in the left part at equal intervals and 16 numbers 2 in the right part at equal intervals. The actual effect picture is made by only intercepting a picture of a binocular video. And placing the manufactured test image into a specified folder of the mobile phone equipment, and reading and displaying the three-dimensional test image of the specified folder by naked eye three-dimensional calibration software.
In this embodiment, the naked eye 3D display technology displays two images by distinguishing the left and right eyes, and by allowing the left eye to see the image of the left eye, the right eye to see the image of the right eye, the brain of the user can synthesize a stereoscopic image with depth, thereby realizing a naked eye three-dimensional stereoscopic effect. Based on the display principle, when a general stereo test image is created, the image needs to be divided at 1/2, and calibration needs to be performed using different screens on the left and right sides. In order to improve the accuracy of calibration, the left and right pictures respectively adopt three types of pictures of pure color, digital pictures and actual effect pictures. And after the test chart is manufactured, the test chart is transmitted to a P _ Picture folder under a root directory of the mobile phone device through a USB connecting line, and the three-dimensional test image of the P _ Picture folder is read and displayed by naked eye three-dimensional calibration software. This has the advantage that the test image can be replaced in an extremely light and portable manner.
In the calibration process, although the DOT distances DOT of display screens of different mobile phone devices are different values, the DOT distance DOT of a single mobile phone device is a fixed value, the parameter is set as the DOT distance DOT value of the mobile phone device in the calibration software, and then the calibration work is completed when the correct display effect appears on three different calibration graphs by changing the other two parameter values LPI and the inclination angle α of the calibration software.
In the embodiment, DOT-to-DOT distance DOT of a display screen of mobile phone equipment refers to the distance between two adjacent homochromatic pixel units on a screen, namely the distance between two red (green and blue) pixel units, for a certain fixed model of mobile phone equipment, a DOT-to-DOT distance DOT value is a fixed value, in the calibration process, a DOT-to-DOT distance DOT parameter value in calibration software is firstly set as a DOT-to-DOT distance DOT value of the mobile phone equipment, then the other two parameter values LPI and an inclination angle α of the calibration software are changed to enable three different calibration graphs to have correct display effects, wherein the correct display effect of a black-and-white graph is that when the black-and-white graph is observed through the mobile phone equipment based on a lenticular grating film, a completely white visual effect can be observed right in front of the display equipment, and a completely black visual effect can be observed in two directions which are right or left, the correct display effect is that when the 1/2 graph is observed through the mobile phone equipment based on the lenticular grating film, only 16 pieces of the display effect can be observed through the mobile phone equipment based on the lenticular grating film, and when the mobile phone equipment only the correct display effect is observed through the mobile phone equipment based on the lenticular grating film.
After the calibration is completed, clicking a Save button of the calibration software, the calibration software automatically creates a folder named as P _ Number under a root directory of the mobile phone device, and simultaneously generates a text document of Number1.txt under the folder, the text document records DOT pitch DOT values, linear Number LPI values and inclination angle α values, after the calibration data recording is completed, switching to the naked eye three-dimensional display software, and the display software directly reads data of the Number1 text document to complete the transmission process of the parameter data.
In this example, each time the Save button of the calibration software is clicked, a text document is created under the P _ Number folder, for example, the Save button is clicked for the first time to generate a text document of Number1.txt, the Save button is clicked for the second time to generate a text document of Number2.txt, and so on. Meanwhile, in order to ensure the unicity of data information and avoid the waste of memory, when the calibration parameters are not changed, the Save button is continuously clicked, only one data text document is generated, when the calibration parameters are changed, other text documents are generated, the generated parameter text document is compared with other text document data in the folder, and if the parameter text document is the same data, the text document is automatically deleted. If the data is different, the text document is saved. This has the advantage of saving the storage space of the handset device to the greatest extent. Meanwhile, the parameter data of the mobile phone equipment can be recorded as the initial value of the calibration parameter of the mobile phone equipment of the same model, so that the calibration time is greatly saved.
In fig. 1, 105 is that the naked eye three-dimensional display software corrects the presentation content through the calibration parameters to achieve the correct naked eye three-dimensional display effect. After receiving the calibration parameters, the naked eye three-dimensional display software calibrates the naked eye three-dimensional content of the M viewpoint, and the specific calibration steps are as follows: firstly, calculating the number Pitch of RGB sub-pixels on the mobile phone display screen covered by the grid Pitch of the lenticular lens in the horizontal direction. Next, a mapping table in which RGB components of the M viewpoint images correspond to RGB components of the stereoscopic image is calculated. Then, according to the mapping table, the RGB components of the M viewpoint images are padded into the RGB components of the stereoscopic image to complete the correction of the stereoscopic image. And finally, the naked eye three-dimensional mobile phone equipment displays the three-dimensional image correctly in a three-dimensional effect.
In this embodiment, the height of each RGB sub-pixel on the display screen of the mobile phone device is 3 times of the width thereof, each row of the arrangement is in the form of RGBRGB … …, until the whole display screen of the mobile phone device is fully paved, wherein, three adjacent R, G, B sub-pixels form a display screen pixel, the number of RGB sub-pixels covered by each lenticular unit in the horizontal direction is Pitch, and the inclination angle of the lens axis relative to the vertical axis of the display screen is α degrees.
Obtaining a mapping table corresponding to RGB components of M viewpoint images and RGB components of a stereo image according to the value of the number of sub-pixels Pitch:
m＝f mod(x(1-tanα)-3ytanα,Pitch)×M/Pitch
in the above equation, f mod represents a modulo operation, and x and y represent RGB component horizontal and vertical coordinate values of the stereoscopic image; the coordinate value takes the coordinate value (1, 1) of the RGB component at the top left corner of the stereo image as a reference, x is increased by 1 to the right, and y is increased by 1 to the down; m represents the RGB component with coordinate value (x, y) in the stereo image corresponding to the corresponding RGB component of the viewpoint m, and the value of m is as follows:
in the above formula, Z represents an integer.
The top left vertex of the display screen of the mobile phone device is not exactly aligned with the top left vertex of the grating, so that a lateral offset x between the edge of the grating unit and the top left vertex of the display screen of the mobile phone device needs to be added1After correction, the mapping table formula is modified as follows:
m＝f mod(x1+x(1-tanα)-3ytanα,Pitch)×M/Pitch
according to the mapping table, filling the RGB components of the M viewpoint images into the RGB components of the stereo image, and the specific steps are as follows: for every K lines of RGB components of the stereoscopic image, every 1 line of RGB components of the M viewpoint images is filled, that is, the 1 st to K lines of RGB components of the stereoscopic image correspond to the 1 st line of RGB components of the M viewpoint images, the K +1 th to 2 × K lines of RGB components of the stereoscopic image correspond to the 2 nd line of RGB components of the M viewpoint images, and so on.
For the RGB components in every 1 line of the stereoscopic image, every 3 × H RGB components thereof are filled with every 1 RGB component of the M viewpoint images until all the RGB components of the stereoscopic image are filled with the RGB components of the M viewpoint images, that is, the 1 st to 3 × H RGB components of a certain line of the stereoscopic image are filled with the 1 st RGB component of the corresponding line of the M viewpoint images, the 3 × H +1 to 6 × H RGB components of the same line of the stereoscopic image are filled with the 2 nd RGB component of the corresponding line of the M viewpoint images, and so on until all the RGB components of the stereoscopic image are filled with the RGB components of the M viewpoint images.
Any features disclosed in this specification, or all of the method or process steps disclosed, may be combined in any combination, except 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 (4)
1. A naked eye 3D display image inspection method is characterized by comprising the following steps:
a. designing naked eye three-dimensional calibration software according to the display characteristics of naked eye three-dimensional mobile phone equipment;
b. making a universal three-dimensional test image of naked eye three-dimensional mobile phone equipment, and putting the test image into an appointed folder of the mobile phone equipment;
c. calibrating parameters of the mobile phone grating film by using naked eye three-dimensional calibration software;
d. recording the calibrated parameters and transmitting the parameters to naked eye three-dimensional display software;
e. and the naked eye three-dimensional display software corrects the presented content through the calibration parameters so as to achieve the correct naked eye three-dimensional display effect.
2. The inspection method of naked eye 3D display images as claimed in claim 1, wherein in step a, the real line number LPI value of the lenticular grating is visually displayed on the upper left of the calibration software, the real inclination angle α value is visually displayed on the upper right of the calibration software, the DOT distance DOT value of the display screen is visually displayed on the lower left of the calibration software, the picture switching button Change and the data storage button Save are designed on the lower right of the calibration software, and meanwhile, for the convenience of the test, the parameter value size adjusting button is correspondingly arranged under or over the display data, for example, the LPI value + button is clicked, the LPI is correspondingly increased, the LPI value-button is clicked, the LPI value is correspondingly decreased, and for the better compatibility of the calibration software, the adaptive UI design is adopted, and the calibration software can automatically stretch or compress UI to adapt to mobile phone devices with various resolutions.
3. The naked eye 3D display image inspection method according to claim 1, characterized in that: and d, clicking a Save button of the calibration software each time in the step d, creating a text document under the P _ Number folder, for example, clicking the Save button for the first time to generate a text document of Number1.txt, clicking the Save button for the second time to generate a text document of Number2.txt, and so on. Meanwhile, in order to ensure the unicity of data information and avoid the waste of memory, when the calibration parameters are not changed, the Save button is continuously clicked, only one data text document is generated, when the calibration parameters are changed, other text documents are generated, the generated parameter text document is compared with other text document data in the folder, and if the parameter text document is the same data, the text document is automatically deleted. If the data is different, the text document is saved.
4. The naked eye 3D display image inspection method according to claim 1, characterized in that: e, calculating the quantity Pitch of RGB sub-pixels on the mobile phone display screen covered by the grid Pitch of the lenticular lens in the horizontal direction according to the following formula:
obtaining a mapping table corresponding to RGB components of M viewpoint images and RGB components of a stereo image according to the value of the number of sub-pixels Pitch:
m＝fmod(x(1-tanα)-3ytanα,Pitch)×M/Pitch
in the above equation, fmod represents a modulo operation, and x and y represent RGB component horizontal and vertical coordinate values of the stereoscopic image; the coordinate value takes the coordinate value (1, 1) of the RGB component at the top left corner of the stereo image as a reference, x is increased by 1 to the right, and y is increased by 1 to the down; m represents the RGB component with coordinate value (x, y) in the stereo image corresponding to the corresponding RGB component of the viewpoint m, and the value of m is as follows:
in the above formula, Z represents an integer.
The top left vertex of the display screen of the mobile phone device is not exactly aligned with the top left vertex of the grating, so that a lateral offset x between the edge of the grating unit and the top left vertex of the display screen of the mobile phone device needs to be added1After correction, the mapping table formula is modified as follows:
m＝fmod(x1+x(1-tanα)-3ytanα,Pitch)×M/Pitch
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112767317A (en) * | 2020-12-31 | 2021-05-07 | 上海易维视科技有限公司 | Naked eye 3D display grating film detection method |
| CN113720262A (en) * | 2021-08-31 | 2021-11-30 | 钟庆生 | Calibration method of three-dimensional measurement software |
| CN113949862A (en) * | 2021-09-08 | 2022-01-18 | 西安诺瓦星云科技股份有限公司 | 3D picture display test method and device, and display control equipment and system |
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2019
- 2019-12-26 CN CN201911398704.8A patent/CN111064950A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112767317A (en) * | 2020-12-31 | 2021-05-07 | 上海易维视科技有限公司 | Naked eye 3D display grating film detection method |
| CN113720262A (en) * | 2021-08-31 | 2021-11-30 | 钟庆生 | Calibration method of three-dimensional measurement software |
| CN113949862A (en) * | 2021-09-08 | 2022-01-18 | 西安诺瓦星云科技股份有限公司 | 3D picture display test method and device, and display control equipment and system |
| CN113949862B (en) * | 2021-09-08 | 2024-05-10 | 西安诺瓦星云科技股份有限公司 | 3D picture display test method and device and display control equipment and system |
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Application publication date: 20200424 |