Waveform effect automatic detection method and device

Abstract

The invention relates to the technical field of electronic paper detection, and discloses a waveform effect automatic detection method and device, and the method comprises the steps: S1, displaying a to-be-detected picture on to-be-detected electronic paper, and obtaining a real-time optical value of the to-be-detected picture; s2, acquiring real-time font saturation and real-time corner saturation of the picture to be detected; and S3, comparing the real-time optical value with a standard optical value, comparing the real-time font saturation with a standard font saturation range, and comparing the real-time corner saturation with a standard corner saturation range. The method has the beneficial effects that the three parameters of the real-time optical value, the real-time font saturation and the real-time corner saturation of the to-be-detected electronic paper can be measured at the same time and are respectively compared with the corresponding standard requirements, so that the detection efficiency and the detection precision are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic paper detection, and in particular to an electronic paper waveform automatic detection method and device. Background Art

[0002] E-paper ink screen display has the characteristics of ultra-low power consumption, low-frequency display, and power saving, and has a wide range of applications in price tags, educational tablets, bus stop signs, etc. Since the display effect of e-paper is affected by factors such as e-paper production batch, TFT backplane and driver IC, different product models using different batches of e-paper need to be individually debugged by waveform to achieve the required display effect.

[0003] During the waveform debugging process, the debugging engineer needs to adjust the waveform parameters and send the corresponding generated waveform parameters to the electronic paper. The electronic paper displays the picture and determines whether the electronic paper waveform is qualified by testing whether the optics, fonts, and corners of the displayed picture meet the requirements. In the prior art, it is necessary to manually operate the optical detector to collect optical value-related data, and the font and corner detection is completely determined by the debugging engineer's naked eye observation. There is a lack of reliable standards for determining the font and corner effects. This detection method greatly affects the debugging efficiency of the debugging engineer, and the detection accuracy is low. Summary of the invention

[0004] The purpose of the present invention is to provide a method and device for automatic detection of waveform effects, which can simultaneously measure three parameters of the electronic paper to be tested, namely, real-time optical value, real-time font saturation, and real-time corner saturation, and compare them with corresponding standard requirements respectively, so as to improve detection efficiency and detection accuracy.

[0005] In order to achieve the above object, the present invention provides a method for automatically detecting waveform effects, comprising the following steps:

[0006] S1. Displaying a picture to be tested on the electronic paper to be tested, and obtaining a real-time optical value of the picture to be tested;

[0007] S2, obtaining the real-time font saturation and real-time corner saturation of the image to be tested;

[0008] S3. Compare the real-time optical value with the standard optical value, compare the real-time font saturation with the standard font saturation range, and compare the real-time corner saturation with the standard corner saturation range.

[0009] The present invention also provides a waveform effect automatic detection device, based on the above-mentioned waveform effect automatic detection method, comprising:

[0010] A carrier, used for placing the electronic paper to be tested, and the electronic paper to be tested can display the picture to be tested;

[0011] An optical detector, used for collecting the real-time optical values ​​of the image to be tested;

[0012] A moving component, connected to the optical detector, and used to move the optical detector to the optical collection point of the image to be tested;

[0013] A camera is used to take a picture of the image to be tested to obtain a test pattern;

[0014] A host computer, electrically connected to the electronic paper to be tested, the optical detector, the mobile component, and the camera;

[0015] The host computer obtains the real-time optical value; the host computer obtains the detection pattern, measures the single-pixel font area and the corner area, and calculates the real-time font saturation and the real-time corner saturation.

[0016] Furthermore, the real-time font saturation=font single pixel area / font single pixel design area*100%.

[0017] Furthermore, the standard font saturation ranges from 70% to 130%.

[0018] Furthermore, the real-time corner saturation=corner area / (number of pixels in the corner area of ​​the image to be tested*design area of ​​a single pixel in the corner)*100%.

[0019] Furthermore, the standard corner saturation has a value range of 70%-130%.

[0020] Furthermore, the number of the real-time optical values ​​is four groups, and the four groups of real-time optical values ​​correspond to the four colors of red, yellow, black and white respectively.

[0021] Furthermore, the brightness value range of the standard optical value corresponding to red is 23-27.

[0022] Furthermore, the moving component is a robot.

[0023] Furthermore, the number of the optical collection points is multiple.

[0024] The embodiment of the present invention is a method and device for automatically detecting waveform effects. Compared with the prior art, the beneficial effect thereof is that the three parameters of the real-time optical value, real-time font saturation, and real-time corner saturation of the electronic paper to be tested can be measured simultaneously, and the real-time optical value is compared with the standard optical value, the real-time font saturation is compared with the standard font saturation range, and the real-time corner saturation is compared with the standard corner saturation range. If the three parameters of the real-time optical value, the real-time font saturation, and the real-time corner saturation all meet the corresponding standards, the electronic paper Waveform waveform is judged to be qualified, otherwise it is unqualified, thereby improving the detection efficiency and detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a flow chart of a method for automatically detecting waveform effects according to an embodiment of the present invention;

[0026] Figure 2 : is a structural principle diagram of a waveform effect automatic detection device according to an embodiment of the present invention;

[0027] In the figure, 1. carrier; 2. optical detector; 3. mobile component; 4. camera; 5. host computer; 6. bracket; a. electronic paper to be tested. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. used in the present invention to indicate the orientation or positional relationship are based on the positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred devices and elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, it should be understood that the present invention uses the terms "first", "second", etc. to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0031] like Figure 1 As shown, a waveform effect automatic detection method of a preferred embodiment of the present invention is used to detect the relevant parameters of optics, fonts, and corners of electronic paper, which specifically includes the following steps:

[0032] S1. Displaying a picture to be tested on the electronic paper a to be tested, and obtaining a real-time optical value of the picture to be tested;

[0033] S2, obtaining the real-time font saturation and real-time corner saturation of the image to be tested;

[0034] S3. Compare the real-time optical value with the standard optical value, compare the real-time font saturation with the standard font saturation range, and compare the real-time corner saturation with the standard corner saturation range.

[0035] In step S3, if the three parameters of real-time optical value, real-time font saturation, and real-time corner saturation all meet the corresponding standards, the electronic paper Waveform is judged to be qualified, otherwise it is unqualified. Compared with the debugging engineer judging the fonts and corners by naked eyes, the detection efficiency and accuracy are improved.

[0036] In order to facilitate automatic detection and further improve the detection efficiency and detection accuracy, the present invention also provides a waveform effect automatic detection device, which is based on the above-mentioned waveform effect automatic detection method and includes a carrier 1, an optical detector 2, a mobile component 3, a camera 4 and a host computer 5. The host computer 5 is electrically connected to the electronic paper a to be tested, the optical detector 2, the mobile component 3, and the camera 4.

[0037] The stage 1 is used to place the electronic paper a to be tested, and the electronic paper a to be tested can display the picture to be tested. The optical detector 2 is used to collect real-time optical values ​​of the picture to be tested and transmit them to the host computer 5, and the host computer 5 obtains the real-time optical values. In order to facilitate the movement of the optical measuring instrument to the specified optical collection point, the moving component 3 is connected to the optical detector 2, and is used to move the optical detector 2 to the optical collection point of the picture to be tested. In order to improve the movement accuracy of the optical detector 2, in this embodiment, the moving component 3 can be a manipulator. In order to facilitate the judgment of the font and corner effects on the image to be tested, a camera 4 is set. In order to facilitate the installation of the camera 4, a bracket 6 is provided on the platform 1. The camera 4 is installed on the platform 1 and is located above the electronic paper a to be tested. The camera 4 takes a picture of the image to be tested to obtain a detection pattern, and transmits the detection pattern to the host computer 5 at the same time. The host computer 5 measures the single-pixel font area and the corner area through the detection pattern obtained by the camera, and calculates the real-time font saturation and real-time corner saturation. Before the electronic paper a to be tested is tested, the host computer 5 has preset standard optical values, standard font saturation ranges, and standard corner saturation ranges corresponding to different display images, and different collection points are preset accordingly. The three measured real-time parameters can be compared with the above standards to determine whether the electronic paper Waveform is qualified.

[0038] Furthermore, in this embodiment, in order to facilitate the calculation of the real-time saturation and to facilitate comparison with the standard font saturation range, the real-time font saturation = font single pixel area / font single pixel design area * 100%. The standard font saturation value range is 70%-130%. The single pixel area of ​​the font at the specified detection point of the image to be tested is measured by the camera, and the real-time font saturation is calculated based on the single pixel design area of ​​the font of the current electronic paper to be tested. If the real-time font saturation of all points measured is within the range of 70%-130%, the font is judged to be qualified.

[0039] Furthermore, in this embodiment, in order to facilitate the calculation of the real-time corner saturation and to facilitate comparison with the standard corner saturation range, the real-time corner saturation = corner area / (number of pixels in the corner area of ​​the image to be tested * corner single pixel design area)*100%. The standard corner saturation value range is 70%-130%. The area of ​​the four corner areas of the pattern to be tested is obtained by the camera, and the real-time corner saturation is calculated according to the corner single pixel design area of ​​the current electronic paper to be tested. If the measured real-time corner saturations of the four corners are all within the range of 70%-130%, the corner is determined to be qualified.

[0040] In this embodiment, in order to further improve the reliability of the detection results, the number of real-time optical values ​​is four groups, and the four groups of real-time optical values ​​correspond to the four colors of red, yellow, black and white. When measuring optical values ​​of different colors, in order to ensure the reliability of the measurement results, the number of optical collection points is multiple.

[0041] The optical value is expressed by three Lab values. The standard optical values ​​corresponding to different colors are as follows:

[0042]

[0043] Wherein, L represents brightness, a represents red-green hue, b represents yellow-blue hue, and the brightness value range of red in the standard optical value is 23-27.

[0044] In summary, the embodiments of the present invention provide a method and device for automatic detection of waveform effects, which have the beneficial effects of: the real-time optical value, real-time font saturation, and real-time corner saturation of the electronic paper a to be tested can be measured simultaneously, and the real-time optical value is compared with the standard optical value, the real-time font saturation is compared with the standard font saturation range, and the real-time corner saturation is compared with the standard corner saturation range. If the three parameters of the real-time optical value, real-time font saturation, and real-time corner saturation all meet the corresponding standards, the electronic paper Waveform is judged to be qualified, otherwise it is unqualified, thereby improving the detection efficiency and detection accuracy.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A method for automatically detecting waveform effects, characterized in that: The following steps are included S1. Displaying a picture to be tested on the electronic paper to be tested, and obtaining a real-time optical value of the picture to be tested; S2, obtaining the real-time font saturation and real-time corner saturation of the image to be tested; S3. Compare the real-time optical value with the standard optical value, compare the real-time font saturation with the standard font saturation range, and compare the real-time corner saturation with the standard corner saturation range.

2. A waveform effect automatic detection device, based on the waveform effect automatic detection method according to claim 1, characterized in that: include A carrier, used for placing the electronic paper to be tested, and the electronic paper to be tested can display the picture to be tested; An optical detector, used for collecting the real-time optical values ​​of the image to be tested; A moving component, connected to the optical detector, and used to move the optical detector to the optical collection point of the image to be tested; A camera is used to take a picture of the image to be tested to obtain a test pattern; A host computer, electrically connected to the electronic paper to be tested, the optical detector, the mobile component, and the camera; Wherein, the host computer obtains the real-time optical value; The host computer obtains the detection pattern, measures the single-pixel font area and the corner area, and calculates the real-time font saturation and the real-time corner saturation.

3. The waveform effect automatic detection device according to claim 2, characterized in that: The real-time font saturation=font single pixel area / font single pixel design area*100%.

4. The waveform effect automatic detection device according to claim 2, characterized in that: The standard font saturation value ranges from 70% to 130%.

5. The waveform effect automatic detection device according to claim 2, characterized in that: The real-time corner saturation=corner area / (number of pixels in the corner area of ​​the image to be tested*design area of ​​a single pixel in the corner)*100%.

6. The waveform effect automatic detection device according to claim 2, characterized in that: The standard corner saturation value ranges from 70% to 130%.

7. The waveform effect automatic detection device according to claim 2, characterized in that: The number of the real-time optical values ​​is four groups, and the four groups of real-time optical values ​​correspond to the four colors of red, yellow, black and white respectively.

8. The waveform effect automatic detection device according to claim 7, characterized in that: The brightness range of the standard optical value corresponding to red is 23-27.

9. The waveform effect automatic detection device according to claim 2, characterized in that: The moving component is a manipulator.

10. The waveform effect automatic detection device according to claim 2, characterized in that: The number of the optical collection points is multiple.

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