CN111369923A - Display screen abnormal point detection method, detection device and readable storage medium - Google Patents
Display screen abnormal point detection method, detection device and readable storage medium Download PDFInfo
- Publication number
- CN111369923A CN111369923A CN202010122139.9A CN202010122139A CN111369923A CN 111369923 A CN111369923 A CN 111369923A CN 202010122139 A CN202010122139 A CN 202010122139A CN 111369923 A CN111369923 A CN 111369923A
- Authority
- CN
- China
- Prior art keywords
- image
- display screen
- region
- detected
- display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
Abstract
The invention discloses a method for detecting abnormal points of a display screen, detection equipment and a readable storage medium, wherein the detection method comprises the following steps: lightening a display screen to obtain a display image of the display screen; selecting a region to be detected in the display image, performing pixel offset on the region to be detected to cover a corresponding interval region of the interval belt in the display image, and generating an offset image after performing the pixel offset; and detecting whether the light and dark difference points in the offset image are abnormal points. The technical scheme of the invention can accurately judge whether the dark color point is a pixel bad point.
Description
Technical Field
The invention relates to the technical field of screen detection, in particular to a method and a device for detecting abnormal points of a display screen and a readable storage medium.
Background
Display screens have penetrated aspects of personal consumer electronics, such as the image display fields of cell phones, smartwatches, tablet computers, virtual reality, and the like. With the continuous progress of technology, the demand of high-pixel display screens is more and more vigorous.
The detection of present display screen is usually that the manual mode is accomplished and is detected, and along with the pixel of display screen is higher and higher, the degree of difficulty that artifical naked eye detected is bigger and bigger, and wherein, the interval has the space band between every pixel in the display screen, and the space band is luminous not, judges the space band mistake easily during artifical detection as dark bad pixel, the problem of can't accurately judge whether display screen has the abnormal point appears.
The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.
Disclosure of Invention
Therefore, in order to solve the problems that the difficulty of detecting abnormal points of a display screen by naked eyes is getting higher and higher, and the interval zone between the pixel points is easily judged as a dark-color defective pixel point by mistake, so that whether the abnormal points exist on the display screen cannot be accurately judged, it is necessary to provide a display screen abnormal point detecting method, detecting equipment and a readable storage medium, so that whether the dark-color points are defective pixels can be accurately judged.
In order to achieve the above object, the present invention provides a method for detecting abnormal points on a display screen, where a space is provided between each pixel point of the display screen, the method comprising:
lightening a display screen to obtain a display image of the display screen;
selecting a region to be detected in the display image, performing pixel offset on the region to be detected to cover a corresponding interval region of the interval belt in the display image, and generating an offset image after performing the pixel offset;
and detecting whether the light and dark difference points in the offset image are abnormal points.
Optionally, the selecting a region to be detected in the display image, performing pixel offset on the region to be detected to cover a corresponding gap region of the gap band in the display image, and generating an offset image after performing the pixel offset includes:
selecting a region to be detected in the display image, and performing pixel left-right offset on the region to be detected to generate a first image;
carrying out pixel up-and-down deviation on the area to be detected to generate a second image;
combining the first image and the second image to generate the offset image.
Optionally, the selecting a region to be detected in the display image, performing left-right pixel shift on the region to be detected, and generating the first image further includes:
selecting a region to be detected in the display image, and performing pixel left offset on the region to be detected to generate a first sub-image;
performing pixel right deviation on the region to be detected to generate a second sub-image;
combining the first sub-image and the second sub-image to generate the first image.
Optionally, the step of performing pixel up-and-down shift on the region to be detected to generate a second image includes:
shifting the area to be detected on the pixel to generate a third sub-image;
performing pixel down-shifting on the region to be detected to generate a fourth sub-image;
combining the third sub-image and the fourth sub-image to generate the second image.
Optionally, the step of selecting the area to be detected in the display image, performing pixel shift on the area to be detected to cover the corresponding interval area of the interval band in the display image, and generating the shift image after performing the pixel shift includes:
and acquiring the image edge of the display image, filtering the invalid area according to the image edge, and acquiring the area to be detected in the display image.
Optionally, the step of detecting that the light and dark difference points in the offset image are outliers includes:
carrying out binarization black-and-white processing on the offset image;
detecting a dark point in the offset image subjected to the black and white processing, wherein the dark point is the abnormal point;
and determining the position of the abnormal point of the display screen according to the position of the abnormal point in the display image.
Optionally, the step of performing binarization black-and-white processing on the offset image is followed by:
and performing black-white color reversal on the binary black-white processed offset image.
Optionally, the step of illuminating the display screen, and acquiring the display image of the display screen includes:
and lightening a display screen, improving the brightness of the display screen, controlling a camera to shoot the display screen, and acquiring a display image of the display screen.
Further, in order to achieve the above object, the present invention also provides a display screen abnormal point detecting apparatus, comprising: the display screen abnormal point detection device comprises a memory, a processor and a display screen abnormal point detection program which is stored on the memory and can run on the processor; the display screen abnormal point detecting program implements the steps of the display screen abnormal point detecting method as described above when executed by the processor.
Further, in order to achieve the above object, the present invention also provides a readable storage medium on which a display screen abnormal point detecting program is stored, the display screen abnormal point detecting program implementing the steps of the display screen abnormal point detecting method as described above when executed by a processor.
In the technical scheme provided by the invention, the display screen is lightened, wherein a spacing band is arranged between the positions of each pixel point in the display screen at intervals, and after the display screen is lightened, the positions of the spacing bands do not emit light, so that the spacing region corresponding to the spacing bands in the obtained display image of the display screen is dark, the region to be detected is subjected to pixel offset by selecting the region to be detected in the display screen, the spacing region corresponding to the spacing bands in the display image is covered, and the color of the spacing region is changed into light color, so that whether the dark color point is a poor pixel point or not can be accurately judged.
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 description of the embodiments or 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 structures shown in the drawings without creative efforts.
FIG. 1 is a flowchart illustrating a method for detecting an abnormal point on a display screen according to a first embodiment of the present invention;
FIG. 2 is a flowchart illustrating a method for detecting an abnormal point on a display screen according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of an abnormal point position in a display screen according to the present invention;
FIG. 4 is a flowchart illustrating a method for detecting an abnormal point on a display screen according to a third embodiment of the present invention;
FIG. 5 is a flowchart illustrating a method for detecting an abnormal point on a display screen according to a fourth embodiment of the present invention;
FIG. 6 is a schematic diagram of the position of dark spots in an offset image according to the present invention;
FIG. 7 is a flowchart illustrating a fifth embodiment of a method for detecting an abnormal point on a display screen according to the present invention;
FIG. 8 is a schematic diagram illustrating an image before an invalid region is filtered;
FIG. 9 is a schematic diagram of a display image with invalid regions filtered out according to the present invention;
FIG. 10 is a flowchart illustrating a method for detecting an abnormal point on a display screen according to a sixth embodiment of the present invention;
FIG. 11 is a flowchart illustrating a method for detecting an abnormal point on a display screen according to a seventh embodiment of the present invention;
FIG. 12 is a schematic view of an offset image obtained after color inversion according to the present invention;
fig. 13 is a flowchart illustrating an eighth embodiment of a method for detecting an abnormal point on a display screen according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, a first embodiment of the present invention provides a method for detecting abnormal points on a display screen, where each pixel point of the display screen has a spacing zone therebetween. For example, an LCD (Liquid Crystal Display) Liquid Crystal Display screen, where each pixel point in the Liquid Crystal Display screen corresponds to one Display unit, and each Display unit is separated from each other, that is, each pixel point has a spacing zone therebetween, and the spacing zone is non-luminous. The additional display screen further comprises an led (light Emitting diode) display screen, and the detection method comprises:
in step S10, the display screen is lit to obtain a display image of the display screen.
Specifically, the display screen is powered on, so that the display screen is in a display working state, and the display screen can emit light to perform display work of a display image. For example, the display screen is energized to cause the display screen to emit white light. Generally, a defective pixel in a display screen includes a bright point with too high brightness and a dark point with too low brightness. And acquiring a display image of the display screen after the display screen is lightened. For example, the display image is acquired by taking a picture with a camera.
Step S20, selecting a region to be measured in the display image, performing pixel shift on the region to be measured to cover a corresponding gap region of the gap band in the display image, and performing pixel shift to generate a shift image.
Generally, the area of a displayed image is large, in order to ensure the accuracy of measurement, a part of area in the displayed image is selected as a region to be measured, wherein the region to be measured comprises an image corresponding to a non-luminous spacing band, the image corresponding to the spacing band is also dark, but the displayed image outside the spacing band is normally displayed in bright color, and the image corresponding to the spacing band is covered by pixel offset, so that the problem that the spacing band judges and detects abnormal points of a display screen is avoided.
In step S30, the light and dark difference points in the offset image are detected as outliers.
In each display unit corresponding to the display screen, the dot display unit may have too high brightness due to too high power or other manufacturing process influences. It is also possible that the display unit is inoperable, that is, the abnormal dot includes a bright dot or a dark dot, and both the bright dot and the dark dot adversely affect the normal display of the display screen. When detecting the dark spot, the position of the dark spot can be highlighted by improving the brightness of the display screen. When the bright spot is detected, the position of the bright spot can be highlighted by reducing the brightness of the display screen, so that the situation that the bright spot of the display screen cannot be detected due to the fact that the display screen is too bright can be avoided.
In the technical scheme of this embodiment, the display screen is lighted, wherein in the display screen, a spacing zone is arranged at an interval between each pixel point position, and after the display screen is lighted, the spacing zone position does not emit light, so that in the obtained display image of the display screen, the spacing zone corresponding to the spacing zone is dark, the to-be-detected zone is subjected to pixel shift by selecting the to-be-detected zone in the display screen, the spacing zone corresponding to the spacing zone in the display image is covered, so that the color of the spacing zone is changed into bright color, and whether the dark color point is a pixel bad point or not can be accurately judged.
Referring to fig. 2, a second embodiment of the present invention is proposed on the basis of the first embodiment of the present invention, in which the step S20 of selecting the region to be measured in the display image, performing pixel shift on the region to be measured to cover the corresponding spacing region of the spacing band in the display image, and generating the shifted image after performing pixel shift includes:
step S21, selecting a region to be measured in the display image, and performing left-right pixel shift on the region to be measured to generate a first image.
Referring to fig. 3, a schematic diagram of the position of the defective pixel 11 in the display screen 10 can be seen in the display screen 10. Generally, the display units in the display screen are arranged in rows and columns, and thus it can be known that the corresponding spacing bands of the display units are generally arranged in rows and columns. Firstly, performing pixel left-right offset on a region to be detected, wherein the pixel left-right offset can cover spacing bands arranged in columns, so as to obtain a first image with pixels left-right offset, and the spacing bands arranged in rows in the first image are still dark point regions. In addition, the position of the pixel shift is not fixed, and generally, the requirement of covering the spacing band can be satisfied by shifting one pixel position.
In step S22, the region to be measured is shifted up and down in pixels to generate a second image.
And secondly, performing pixel up-and-down deviation through the area to be detected, wherein the pixel up-and-down deviation of the area to be detected can cover the spacing bands arranged in the rows, so that a pixel up-and-down deviation second image is obtained. Generally, shifting one pixel position can satisfy the requirement of masking the spacer bars, wherein the spacer bars arranged in the columns in the second image are still dark spot areas.
In step S23, the first image and the second image are combined to generate an offset image.
The first image and the second image are combined, the first image and the second image are subjected to superposition processing, therefore, the spacing bands arranged in rows and columns can be mutually covered between the first image and the second image, the generated offset image can effectively cover the spacing bands between the pixel points, and further the influence of the spacing bands on dark point areas is avoided.
In addition, the process of acquiring the display image is usually obtained by shooting with a camera, noise may occur in the display image due to exposure of the camera during shooting of the display image with the camera, and the noise in the display image can be eliminated by vertically shifting pixels of the region to be measured and horizontally shifting pixels of the region to be measured.
Referring to fig. 4, the third embodiment of the present invention is proposed on the basis of the second embodiment of the present invention, and the step S21 of selecting the region to be measured in the display image, performing left-right pixel shift on the region to be measured, and generating the first image further includes:
step S210, selecting a region to be detected in a display image, and performing pixel left offset on the region to be detected to generate a first sub-image; for example, the area to be measured is 1280 × 800 pixels, so that the number of columns of the area to be measured is 1280 columns, and after the area to be measured is subjected to pixel left shift, a first sub-image with the number of columns of 1279 columns is obtained.
Step S211, carrying out pixel right deviation on the area to be detected to generate a second sub-image; for example, the area to be measured is 1280 × 800 pixels, so that the number of columns of the area to be measured is 1280 columns, and after the area to be measured is shifted right, the second sub-image with the number of columns of 1279 columns is obtained. The area to be detected is respectively translated leftwards and rightwards, the number of pixels translated leftwards and rightwards is the same, the first sub-image and the second sub-image can have the same pixel column number, and the first sub-image and the second sub-image can be conveniently overlapped.
Step S211 may be located before step S210, that is, the area to be measured may be pixel-shifted to the left first, and then the area to be measured may be pixel-shifted to the right. Or the area to be measured can be subjected to pixel translation rightward first and then to be subjected to pixel translation leftward.
Step S212, the first sub-image and the second sub-image are combined to generate a first image. Usually, it is difficult to completely cover the spacing strip with one-time pixel shift, and the area of the spacing strip is further covered by the combination of the first sub-image and the second sub-image, so as to ensure the covering effect of the spacing strip arranged in columns.
Referring to fig. 5, a fourth embodiment of the present invention is proposed on the basis of the third embodiment of the present invention, and the step S22 of shifting pixels of the region to be measured up and down to generate the second image includes:
step S220, performing pixel-up offset on the region to be detected to generate a third sub-image; for example, the region to be measured is 1280 × 800 pixels, so that the number of rows of the region to be measured is 800, and after the region to be measured is subjected to pixel-up shift, a third sub-image with the number of rows of 799 is obtained.
Step S221, performing pixel down-shift on the region to be detected to generate a fourth sub-image; for example, the area to be measured is 1280 × 800 pixels, so that the number of rows of the area to be measured is 800, and after the area to be measured is shifted under the pixels, a fourth sub-image with 799 columns is obtained. The area to be measured is respectively translated upwards and downwards, the pixels translated upwards and downwards are the same, the third sub-image and the fourth sub-image can have the same pixel line number, and the third sub-image and the fourth sub-image can be conveniently superposed.
Step S222, combining the third sub-image and the fourth sub-image to generate a second image. Usually, it is difficult to completely cover the spacing strip with one-time pixel shift, and the area of the spacing strip is further covered by the combination of the third sub-image and the fourth sub-image, so as to ensure the covering effect of the spacing strip arranged in rows.
Referring to fig. 6, a schematic diagram of the offset image 20, and the dark spot 21 in the offset image 20 are visible.
Referring to fig. 7, a fifth embodiment of the present invention is proposed on the basis of the first to fourth embodiments of the present invention, in which the display image includes an invalid region outside the image edge and a region to be measured inside the image edge, the region to be measured in the display image is selected, the region to be measured is subjected to pixel shift to cover the corresponding spacing region of the spacing band in the display image, and the step S20 of generating the shifted image after the pixel shift includes:
and step S40, acquiring the image edge of the display image, filtering out the invalid area according to the image edge, and acquiring the area to be detected in the display image.
After the display screen is processed, the display screen usually has some light-transmitting areas in the peripheral area of the display screen, and the light-transmitting areas affect the normal detection of the display screen. By acquiring the image edge position of the display image and filtering out the invalid area according to the image edge, namely blackening the area outside the image edge, the influence of the light-transmitting area around the display screen is avoided, so that the area to be detected with an accurate range can be acquired.
Referring to fig. 8, a schematic diagram before the invalid region is filtered out, and a schematic diagram after the point invalid region is filtered out as shown in fig. 9, where the visible invalid region includes a transparent white contour line, and the filtering out of the white contour line can effectively reduce the influence of the transparent region.
Referring to fig. 10, the sixth embodiment of the present invention is proposed on the basis of the fifth embodiment of the present invention, and the step S30 of detecting the light and dark difference points in the offset image as the outliers includes:
step S31, performing binarization black-and-white processing on the offset image; specifically, the binarization black-and-white processing is to set a threshold, and if the brightness value in the offset image is lower than the set threshold, the corresponding pixel is set to be black, and if the brightness value in the offset image is higher than the set threshold, the corresponding pixel is set to be white. For example, an integer with a binarization value range of 0-255 is set as a threshold value of 150, if the brightness value of the pixel point is lower than 150, the corresponding position in the offset image is converted into black, and if the brightness value of the pixel point is higher than 150, the corresponding position in the offset image is converted into white.
In step S32, a dark spot in the offset image subjected to black-and-white processing is detected, where the dark spot is an outlier.
Normally, the abnormal pixel points are dark points, and the positions and the number of the dark points are judged by comparing and analyzing the brightness values in the black-white post-processing image. That is, a standard value is set, and dark spots in the offset image that meet the standard value belong to.
In step S33, the abnormal point position of the display screen is determined according to the position of the abnormal point in the display image.
Specifically, the positions and the number of the abnormal points in the display image can be obtained through comparative analysis, and the positions of the abnormal points of the display screen can be determined according to the positions of the abnormal points and through the position corresponding relation between the display image and the display screen.
Referring to fig. 11, a seventh embodiment of the present invention is proposed on the basis of the sixth embodiment of the present invention, and step S31 of performing binarization black-and-white processing on an offset image includes:
in step S34, the binary black-and-white processing offset image is reversed in black and white. In general, a white point is more easily detected in a black image, and therefore, a binary black-and-white offset image is reversed in black-and-white color, that is, an original black point is converted into a white point, and an original white area is converted into a black area, so that the positions and the number of abnormal points are more easily detected.
Referring to fig. 12, a shifted image obtained after color inversion is shown, in which a visible white point represents a pixel outlier, which is clearly visible.
Referring to fig. 13, an eighth embodiment of the present invention is proposed on the basis of the first embodiment of the present invention, and the step S10 of lighting the display screen and acquiring the display image of the display screen includes:
and step S11, lighting the display screen, improving the brightness of the display screen, controlling the camera to shoot the display screen, and acquiring the display image of the display screen.
Specifically, the display screen is shot by the camera, and the abnormal point position is usually a dark point, so that the position of the dark point on the display screen is more highlighted after the brightness of the display screen is improved, and the position and the number of the abnormal points are more easily detected.
The present invention also provides a display screen abnormal point detecting apparatus, the detecting apparatus comprising: the display screen abnormal point detection device comprises a memory, a processor and a display screen abnormal point detection program which is stored on the memory and can run on the processor; the display screen abnormal point detection device calls the display screen abnormal point detection stored in the memory through the processor and executes the following operations
Lightening a display screen to obtain a display image of the display screen;
selecting a region to be detected in the display image, performing pixel offset on the region to be detected to cover a corresponding interval region of the interval belt in the display image, and generating an offset image after performing the pixel offset;
and detecting whether the light and dark difference points in the offset image are abnormal points.
Further, the processor calls the display screen abnormal point detection program stored in the memory and also executes the following operations:
the step of selecting a region to be detected in the display image, performing pixel offset on the region to be detected to cover a corresponding interval region of the interval belt in the display image, and generating an offset image after performing the pixel offset comprises:
selecting a region to be detected in the display image, and performing pixel left-right offset on the region to be detected to generate a first image;
carrying out pixel up-and-down deviation on the area to be detected to generate a second image;
combining the first image and the second image to generate the offset image.
Further, the processor calls the display screen abnormal point detection program stored in the memory and also executes the following operations:
the step of selecting the region to be detected in the display image, performing left-right pixel shift on the region to be detected, and generating the first image further comprises:
selecting a region to be detected in the display image, and performing pixel left offset on the region to be detected to generate a first sub-image;
performing pixel right deviation on the region to be detected to generate a second sub-image;
combining the first sub-image and the second sub-image to generate the first image.
Further, the processor calls the display screen abnormal point detection program stored in the memory and also executes the following operations:
the step of shifting the pixels of the region to be detected up and down to generate a second image comprises the following steps:
shifting the area to be detected on the pixel to generate a third sub-image;
performing pixel down-shifting on the region to be detected to generate a fourth sub-image;
combining the third sub-image and the fourth sub-image to generate the second image.
Further, the processor calls the display screen abnormal point detection program stored in the memory and also executes the following operations:
the display image comprises an invalid area outside the image edge and an area to be detected within the image edge, the area to be detected in the display image is selected, pixel offset is carried out on the area to be detected so as to cover a corresponding interval area of the interval belt in the display image, and the step of generating the offset image after the pixel offset comprises the following steps:
and acquiring the image edge of the display image, filtering the invalid area according to the image edge, and acquiring the area to be detected in the display image.
Further, the processor calls the display screen abnormal point detection program stored in the memory and also executes the following operations:
the step of detecting the light and dark difference points in the offset image as abnormal points comprises the following steps:
carrying out binarization black-and-white processing on the offset image;
detecting a dark point in the offset image subjected to the black and white processing, wherein the dark point is the abnormal point;
and determining the position of the abnormal point of the display screen according to the position of the abnormal point in the display image.
Further, the processor calls the display screen abnormal point detection program stored in the memory and also executes the following operations:
the step of performing binarization black-and-white processing on the offset image comprises the following steps:
and performing black-white color reversal on the binary black-white processed offset image.
Further, the processor calls the display screen abnormal point detection program stored in the memory and also executes the following operations:
the step of illuminating the display screen and acquiring the display image of the display screen comprises the following steps:
lightening a display screen, improving the brightness of the display screen, controlling a camera to shoot the display screen, and acquiring a display image of the display screen
The present invention also provides a readable storage medium on which a display screen abnormal point detection program is stored, which when executed by a processor implements the steps of the display screen abnormal point detection method as described above.
The specific implementation of the readable storage medium of the present invention may refer to the embodiments of the method for detecting outliers on a display screen, which are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A method for detecting abnormal points of a display screen, wherein a spacing zone is arranged between each pixel point of the display screen, the method comprises the following steps:
lightening a display screen to obtain a display image of the display screen;
selecting a region to be detected in the display image, performing pixel offset on the region to be detected to cover a corresponding interval region of the interval belt in the display image, and generating an offset image after performing the pixel offset;
and detecting whether the light and dark difference points in the offset image are abnormal points.
2. The method for detecting the abnormal point of the display screen according to claim 1, wherein the step of selecting a region to be detected in the display image, performing pixel shift on the region to be detected to cover a corresponding interval region of the interval belt in the display image, and generating the shift image after performing the pixel shift comprises:
selecting a region to be detected in the display image, and performing pixel left-right offset on the region to be detected to generate a first image;
carrying out pixel up-and-down deviation on the area to be detected to generate a second image;
combining the first image and the second image to generate the offset image.
3. The method for detecting the abnormal point of the display screen according to claim 2, wherein the step of selecting the region to be detected in the display image, performing left-right pixel shift on the region to be detected, and generating the first image further comprises:
selecting a region to be detected in the display image, and performing pixel left offset on the region to be detected to generate a first sub-image;
performing pixel right deviation on the region to be detected to generate a second sub-image;
combining the first sub-image and the second sub-image to generate the first image.
4. The method for detecting the abnormal point of the display screen according to claim 3, wherein the step of shifting the pixels of the region to be detected up and down to generate the second image comprises:
shifting the area to be detected on the pixel to generate a third sub-image;
performing pixel down-shifting on the region to be detected to generate a fourth sub-image;
combining the third sub-image and the fourth sub-image to generate the second image.
5. The method for detecting the abnormal point of the display screen according to any one of claims 1 to 4, wherein the display image comprises an invalid region outside an image edge and a region to be detected within the image edge, the step of selecting the region to be detected in the display image, performing pixel shift on the region to be detected to cover a corresponding spacing region of the spacing band in the display image, and generating a shift image after performing the pixel shift comprises:
and acquiring the image edge of the display image, filtering the invalid area according to the image edge, and acquiring the area to be detected in the display image.
6. The method for detecting an abnormal point on a display screen according to claim 5, wherein the step of detecting the light and dark difference points in the offset image as abnormal points comprises:
carrying out binarization black-and-white processing on the offset image;
detecting a dark point in the offset image subjected to the black and white processing, wherein the dark point is the abnormal point;
and determining the position of the abnormal point of the display screen according to the position of the abnormal point in the display image.
7. The display screen anomaly detection method according to claim 6, wherein said step of subjecting said offset image to binarization black-and-white processing is followed by:
and performing black-white color reversal on the binary black-white processed offset image.
8. The method for detecting an abnormal point on a display screen according to claim 1, wherein the step of illuminating the display screen and acquiring the display image of the display screen comprises:
and lightening a display screen, improving the brightness of the display screen, controlling a camera to shoot the display screen, and acquiring a display image of the display screen.
9. A display screen abnormal point detecting apparatus, characterized in that the detecting apparatus comprises: the display screen abnormal point detection device comprises a memory, a processor and a display screen abnormal point detection program which is stored on the memory and can run on the processor; the display screen abnormal point detecting program realizes the steps of the display screen abnormal point detecting method according to any one of claims 1 to 8 when executed by the processor.
10. A readable storage medium on which a display screen abnormal point detecting program is stored, the display screen abnormal point detecting program implementing the steps of the display screen abnormal point detecting method according to any one of claims 1 to 8 when executed by a processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010122139.9A CN111369923B (en) | 2020-02-26 | 2020-02-26 | Display screen outlier detection method, detection apparatus, and readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010122139.9A CN111369923B (en) | 2020-02-26 | 2020-02-26 | Display screen outlier detection method, detection apparatus, and readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111369923A true CN111369923A (en) | 2020-07-03 |
| CN111369923B CN111369923B (en) | 2023-09-29 |
Family
ID=71210120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010122139.9A Active CN111369923B (en) | 2020-02-26 | 2020-02-26 | Display screen outlier detection method, detection apparatus, and readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111369923B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111933065A (en) * | 2020-08-13 | 2020-11-13 | 北京字节跳动网络技术有限公司 | Burn-in protection method, device, equipment and storage medium |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6347156B1 (en) * | 1998-05-27 | 2002-02-12 | Fujitsu Limited | Device, method and storage medium for recognizing a document image |
| JP2004106234A (en) * | 2002-09-13 | 2004-04-08 | Ricoh Co Ltd | Multibeam image forming apparatus |
| JP2004239733A (en) * | 2003-02-05 | 2004-08-26 | Seiko Epson Corp | Defect detection method and apparatus of screen |
| US20040263497A1 (en) * | 2001-12-17 | 2004-12-30 | Thierry Leroux | Low resolution acquisition method and device for controlling a display screen |
| US6894807B1 (en) * | 1999-06-28 | 2005-05-17 | Riso Kagaku Corporation | Method and apparatus for printing a black-and-white image based on color image information |
| US20050157273A1 (en) * | 2004-01-20 | 2005-07-21 | Collins David C. | Display system with sequential color and wobble device |
| US20050232476A1 (en) * | 2004-04-19 | 2005-10-20 | Semiconductor Energy Laboratory Co., Ltd. | Image analysis method, image analysis program and pixel evaluation system having the sames |
| CN1979260A (en) * | 2005-12-07 | 2007-06-13 | Lg.菲利浦Lcd株式会社 | Flat display panel, manufacturing method thereof, and manufacturing apparatus thereof |
| JP2008098968A (en) * | 2006-10-12 | 2008-04-24 | Yokogawa Electric Corp | Defect inspection device |
| US20080309884A1 (en) * | 2005-04-26 | 2008-12-18 | O'dor Matthew | Electronic Projection Systems and Methods |
| CN101377576A (en) * | 2007-08-27 | 2009-03-04 | 东捷科技股份有限公司 | Method for accurately positioning flaw point of liquid crystal panel |
| JP2009079983A (en) * | 2007-09-26 | 2009-04-16 | Seiko Epson Corp | Point defect detecting device and point defect detecting method |
| JP2009251059A (en) * | 2008-04-01 | 2009-10-29 | Sharp Corp | Inspection device, inspection system, control method of inspection device, inspection device control program, computer readable recording medium in which the program is recorded |
| CN105283884A (en) * | 2013-03-13 | 2016-01-27 | 柯法克斯公司 | Classifying objects in digital images captured using mobile devices |
| CN108496360A (en) * | 2016-01-25 | 2018-09-04 | 奥林巴斯株式会社 | Image processing apparatus, image processing method and program |
-
2020
- 2020-02-26 CN CN202010122139.9A patent/CN111369923B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6347156B1 (en) * | 1998-05-27 | 2002-02-12 | Fujitsu Limited | Device, method and storage medium for recognizing a document image |
| US6894807B1 (en) * | 1999-06-28 | 2005-05-17 | Riso Kagaku Corporation | Method and apparatus for printing a black-and-white image based on color image information |
| US20040263497A1 (en) * | 2001-12-17 | 2004-12-30 | Thierry Leroux | Low resolution acquisition method and device for controlling a display screen |
| JP2004106234A (en) * | 2002-09-13 | 2004-04-08 | Ricoh Co Ltd | Multibeam image forming apparatus |
| JP2004239733A (en) * | 2003-02-05 | 2004-08-26 | Seiko Epson Corp | Defect detection method and apparatus of screen |
| US20050157273A1 (en) * | 2004-01-20 | 2005-07-21 | Collins David C. | Display system with sequential color and wobble device |
| US20050232476A1 (en) * | 2004-04-19 | 2005-10-20 | Semiconductor Energy Laboratory Co., Ltd. | Image analysis method, image analysis program and pixel evaluation system having the sames |
| US20080309884A1 (en) * | 2005-04-26 | 2008-12-18 | O'dor Matthew | Electronic Projection Systems and Methods |
| CN1979260A (en) * | 2005-12-07 | 2007-06-13 | Lg.菲利浦Lcd株式会社 | Flat display panel, manufacturing method thereof, and manufacturing apparatus thereof |
| JP2008098968A (en) * | 2006-10-12 | 2008-04-24 | Yokogawa Electric Corp | Defect inspection device |
| CN101377576A (en) * | 2007-08-27 | 2009-03-04 | 东捷科技股份有限公司 | Method for accurately positioning flaw point of liquid crystal panel |
| JP2009079983A (en) * | 2007-09-26 | 2009-04-16 | Seiko Epson Corp | Point defect detecting device and point defect detecting method |
| JP2009251059A (en) * | 2008-04-01 | 2009-10-29 | Sharp Corp | Inspection device, inspection system, control method of inspection device, inspection device control program, computer readable recording medium in which the program is recorded |
| CN105283884A (en) * | 2013-03-13 | 2016-01-27 | 柯法克斯公司 | Classifying objects in digital images captured using mobile devices |
| CN108496360A (en) * | 2016-01-25 | 2018-09-04 | 奥林巴斯株式会社 | Image processing apparatus, image processing method and program |
| US20180338100A1 (en) * | 2016-01-25 | 2018-11-22 | Olympus Corporation | Image processing device, image processing method and computer readable recording medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111933065A (en) * | 2020-08-13 | 2020-11-13 | 北京字节跳动网络技术有限公司 | Burn-in protection method, device, equipment and storage medium |
| CN111933065B (en) * | 2020-08-13 | 2023-06-20 | 抖音视界有限公司 | Burn-in screen protection method, device, equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111369923B (en) | 2023-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10855910B2 (en) | Electronic device, method, and program | |
| CN109752394B (en) | High-precision detection method and system for defects of display screen | |
| US7936926B2 (en) | Apparatus, method, and program for face feature point detection | |
| CN110009607B (en) | Display screen dead pixel detection method and device, computer equipment and storage medium | |
| KR100791375B1 (en) | Apparatus and method for color correction | |
| JP2008072696A (en) | Focusing information visualization device, and corresponding method, program and recording medium | |
| CN111292701B (en) | Display panel compensation method and device | |
| CN101202928B (en) | Apparatus and method to improve clarity of image | |
| CN101374191A (en) | Method and apparatus for correcting chromatic aberration of image | |
| JP5381565B2 (en) | Image processing apparatus, image processing program, and image processing method | |
| CN110084801A (en) | A kind of detection method of terminal screen, device, portable terminal and storage medium | |
| CN109905700A (en) | Virtual display device and its detection method, device, computer readable storage medium | |
| CN111385447B (en) | Image pickup apparatus and driving method thereof | |
| US20210044756A1 (en) | Display and imaging device | |
| US20220060713A1 (en) | Image display method and device, image recognition method and device, storage medium, electronic apparatus, and image system | |
| CN110458826A (en) | Ambient brightness detection method and device | |
| US20090041295A1 (en) | Image Display Device, Image Display Method, and Image Display Program | |
| CN110620887B (en) | Image generation device and image generation method | |
| CN111369923A (en) | Display screen abnormal point detection method, detection device and readable storage medium | |
| CN111124404A (en) | Custom color display method and system | |
| CN116233607A (en) | Multi-exposure image processing method and device, chip and electronic equipment | |
| CN110992328A (en) | Dark spot detection method and device | |
| US9582874B2 (en) | Method of detection of faults on circuit boards | |
| CN115297267A (en) | Method and device for calibrating exposure duration of image acquisition module | |
| CN113516595A (en) | Image processing method, image processing apparatus, electronic device, and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201014 Address after: 261031, north of Jade East Street, Dongming Road, Weifang hi tech Zone, Shandong province (GoerTek electronic office building, Room 502) Applicant after: GoerTek Optical Technology Co.,Ltd. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Applicant before: GOERTEK Inc. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |