CN111369923B - Display screen outlier detection method, detection apparatus, and readable storage medium - Google Patents
Display screen outlier detection method, detection apparatus, and readable storage medium Download PDFInfo
- Publication number
- CN111369923B CN111369923B CN202010122139.9A CN202010122139A CN111369923B CN 111369923 B CN111369923 B CN 111369923B CN 202010122139 A CN202010122139 A CN 202010122139A CN 111369923 B CN111369923 B CN 111369923B
- Authority
- CN
- China
- Prior art keywords
- image
- display screen
- region
- offset
- 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.)
- Active
Links
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 application 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: a display screen is lightened, and a display image of the display screen is obtained; selecting a region to be detected in the display image, performing pixel shifting on the region to be detected to cover a corresponding interval region of the interval band in the display image, and generating a shifting image after performing the pixel shifting; and detecting the bright and dark difference points in the offset image as abnormal points. The technical scheme of the application can accurately judge whether the dark color point is a defective pixel point.
Description
Technical Field
The present application relates to the field of screen detection technologies, and in particular, to a method for detecting abnormal points of a display screen, a detection device, and a readable storage medium.
Background
Display screens have penetrated the area of image display for personal consumer electronics, such as cell phones, smart watches, tablet computers, virtual reality, etc. With the continuous progress of technology, high-pixel display screens are increasingly in demand.
At present, detection of a display screen is usually completed manually, and as the pixels of the display screen are higher, the difficulty of manual naked eye detection is higher and higher, wherein a spacing belt is arranged between every two pixel points in the display screen, the spacing belt does not emit light, the spacing belt is easily misjudged as dark bad pixel points during manual detection, and the problem that whether the display screen has abnormal points or not cannot be accurately judged occurs.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present application and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
Based on this, aiming at the problem that the difficulty of detecting abnormal points of a display screen by naked eyes is increasing, and the interval zone between the pixel points is easily misjudged as dark bad pixel points, so that whether the abnormal points exist in the display screen cannot be accurately judged, it is necessary to provide a detection method, detection equipment and readable storage medium for the abnormal points of the display screen, and whether the dark points are the bad pixel points can be accurately judged.
In order to achieve the above object, the present application provides a method for detecting abnormal points of a display screen, wherein a space band is provided between each pixel point of the display screen, the method comprises:
a display screen is lightened, and a display image of the display screen is obtained;
selecting a region to be detected in the display image, performing pixel shifting on the region to be detected to cover a corresponding interval region of the interval band in the display image, and generating a shifting image after performing the pixel shifting;
and detecting the bright and dark difference points in the offset image as abnormal points.
Optionally, the selecting the region to be detected in the display image, performing pixel shifting on the region to be detected to cover a corresponding interval region of the interval band in the display image, and generating the offset image after performing the pixel shifting 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;
performing pixel up-down offset on the region to be detected to generate a second image;
and combining the first image and the second image to generate the offset image.
Optionally, the selecting the region to be detected in the display image, performing pixel left-right offset 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 offset on the region to be detected to generate a second sub-image;
the first sub-image and the second sub-image are combined to generate the first image.
Optionally, the step of performing pixel up-down offset on the area to be measured to generate the second image includes:
performing pixel upper offset on the region to be detected to generate a third sub-image;
performing pixel lower offset on the region to be detected to generate a fourth sub-image;
and combining the third sub-image and the fourth sub-image to generate the second image.
Optionally, the display image includes an invalid region outside the image edge and a region to be detected inside the image edge, the selecting the region to be detected in the display image, and performing pixel shifting on the region to be detected to cover a corresponding interval region of the interval band in the display image, and before the step of generating the offset image after performing the pixel shifting, the method includes:
and acquiring an image edge of the display image, filtering the invalid region according to the image edge, and acquiring the region to be detected in the display image.
Optionally, the step of detecting the bright-dark difference point in the offset image as an abnormal point includes:
performing binarization black-and-white processing on the offset image;
detecting dark points in the offset image subjected to the black-and-white processing, wherein the dark points are abnormal points;
and determining an abnormal point position 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 includes:
and performing black-and-white color inversion on the offset image by the binarized black-and-white processing.
Optionally, the step of lighting up a display screen and acquiring a display image of the display screen includes:
and (3) lighting 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.
In addition, in order to achieve the above object, the present application also provides a display screen abnormal point detection apparatus including: the display screen abnormal point detection device comprises a memory, a processor and a display screen abnormal point detection program, wherein the display screen abnormal point detection program is stored in the memory and can run on the processor; the display screen outlier detection program when executed by the processor implements the steps of the display screen outlier detection method as described above.
In addition, in order to achieve the above object, the present application also provides a readable storage medium having stored thereon a display screen abnormal point detection program which, when executed by a processor, implements the steps of the display screen abnormal point detection method as described above.
According to the technical scheme provided by the application, the display screen is lightened, a spacing band is arranged between each two pixel point positions 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 obtained display image of the display screen is provided with a dark interval area corresponding to the spacing bands, the to-be-measured area in the display screen is selected to carry out pixel shifting on the to-be-measured area, the corresponding interval area of the spacing bands in the display image is covered, the color of the interval area is converted into a bright color, and whether the dark point is a pixel bad point can be accurately judged.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flowchart of a first embodiment of a method for detecting abnormal points on a display screen according to the present application;
FIG. 2 is a flowchart illustrating a method for detecting abnormal points on a display screen according to a second embodiment of the present application;
FIG. 3 is a schematic view of an abnormal point location in a display screen according to the present application;
FIG. 4 is a flowchart illustrating a third embodiment of a method for detecting abnormal points on a display screen according to the present application;
FIG. 5 is a flowchart illustrating a fourth embodiment of a method for detecting abnormal points on a display screen according to the present application;
FIG. 6 is a schematic view of the position of a dark spot in an offset image according to the present application;
FIG. 7 is a flowchart of a fifth embodiment of a method for detecting abnormal points on a display screen according to the present application;
FIG. 8 is a schematic diagram showing the image before filtering out invalid regions according to the present application;
FIG. 9 is a schematic diagram of the present application after filtering out ineffective areas;
FIG. 10 is a flowchart illustrating a sixth embodiment of a method for detecting abnormal points on a display screen according to the present application;
FIG. 11 is a flowchart illustrating a method for detecting abnormal points on a display screen according to a seventh embodiment of the present application;
FIG. 12 is a schematic view of an offset image obtained after color reversal in accordance with the present application;
fig. 13 is a flowchart of an eighth embodiment of a method for detecting abnormal points on a display screen according to the present application.
The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present application may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present application.
Referring to fig. 1, a first embodiment of the present application provides a method for detecting abnormal points of a display screen, where a spacing band is provided between each pixel point of the display screen. Such as an LCD (acronym for Liquid Crystal Display) liquid crystal display screen, in which each pixel location corresponds to a display element, each display element is spaced apart from each other, that is, each pixel has a spacing band therebetween, and the spacing band is non-light emitting. The display screen further comprises a LED (Light Emitting Diode) display screen, and the detection method comprises the following steps:
step S10, a display screen is lightened, and a display image of the display screen is acquired.
Specifically, the display screen is electrified to be in a display working state, and the display screen emits light to display images. For example, the display screen is energized to cause the display screen to emit white light. In general, defective pixel points in a display screen include bright spots with too high brightness and dark spots with too low brightness. And after the display screen is lightened, acquiring a display image of the display screen. For example, a display image is acquired by taking a picture with a camera.
Step S20, selecting a region to be detected in the display image, performing pixel shifting on the region to be detected, covering a corresponding interval region of the interval band in the display image, and performing pixel shifting to generate a shifting image.
In general, the area of the display image is generally larger, in order to ensure the measurement accuracy, a part of the area in the display image is selected as the area to be measured, wherein the area to be measured includes the image corresponding to the interval band which does not emit light, the image corresponding to the interval band is dark, but the display image outside the interval band is bright in normal display, and the image corresponding to the interval band is covered by pixel offset, so that the problem that the interval band judges abnormal points of the detection display screen is avoided.
Step S30, detecting the bright and dark difference points in the offset image as abnormal points.
In each display unit corresponding to the display screen, a display unit may have excessive brightness due to excessive power or other manufacturing process effects. It may also be that the display unit is not operational, i.e. the abnormal spot comprises a bright spot or a dark spot, which both have an adverse effect on the normal display of the display screen. When detecting the dark spot, the position of the dark spot can be highlighted by increasing the brightness of the display screen. When detecting bright spots, the bright spot position can be highlighted by reducing the brightness of the display screen, thereby being capable of avoiding the bright spots which cannot be detected due to the display screen being too bright.
In the technical scheme of the embodiment, the display screen is lightened, a spacing band is arranged between each two pixel point positions in the display screen, and after the display screen is lightened, the positions of the spacing bands do not emit light, so that the obtained display image of the display screen is provided with dark spacing areas corresponding to the spacing bands, the areas to be measured in the display screen are selected to carry out pixel shifting on the areas to be measured, the corresponding spacing areas of the spacing bands in the display image are covered, the colors of the spacing areas are changed into bright colors, and whether the dark color points are defective pixels or not can be accurately judged.
Referring to fig. 2, a second embodiment of the present application is presented based on the first embodiment of the present application, selecting a region to be measured in a display image, performing pixel shifting on the region to be measured, covering a corresponding interval region of an interval band in the display image, and generating an offset image after performing pixel shifting, the step S20 includes:
step S21, 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.
Referring to fig. 3, the display screen 10 is shown with a schematic view of the positions of the defective pixel points 11 in the display screen 10. Typically, the display elements in the display screen are arranged in rows and columns, whereby it will be appreciated that the respective spacing bands of the display elements are typically arranged in rows and columns. First, pixels are shifted left and right in a region to be detected, the pixels can cover interval bands arranged in columns, a first image with the pixels shifted left and right is obtained, and interval bands arranged in rows in the first image are still dark spot regions. In addition, the offset position of the pixels is not fixed, and in general, the requirement of covering the spacer can be met by moving one pixel position.
Step S22, performing pixel up-down offset on the region to be detected to generate a second image.
And secondly, performing pixel vertical migration through the region to be detected, wherein the pixel vertical migration of the region to be detected can cover a spacing band arranged in a row, so that a second image with the pixel vertical migration is obtained. Generally, the requirement of covering the spacing bands is met by shifting the pixel position by one pixel, wherein the spacing bands arranged in the columns in the second image remain dark spot areas.
Step S23, combining the first image and the second image to generate an offset image.
The first image and the second image are combined, namely the first image and the second image are subjected to superposition processing, so that the first image and the second image can mutually cover the interval bands arranged in rows and columns, and the generated offset image can effectively cover the interval bands among the pixel points, so that the influence of the interval bands on the dark point area is avoided.
In addition, in the process of acquiring the display image, the display image is usually acquired by adopting camera shooting, and in the process of shooting the display image by adopting the camera, noise may occur in the display image due to exposure of the camera, and the noise in the display image can be eliminated by shifting the pixels of the region to be detected up and down and shifting the pixels of the region to be detected left and right.
Referring to fig. 4, a third embodiment of the present application is provided based on the second embodiment of the present application, the step S21 of selecting a region to be detected in a display image, performing pixel left-right shift on the region to be detected, and generating a 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, and thus, the column number of the area to be measured is 1280 columns, and after the area to be measured is shifted to the left by the pixels, a first sub-image with column number of 1279 columns is obtained.
Step S211, performing pixel right offset on the region to be detected to generate a second sub-image; for example, the area to be measured is 1280×800 pixels, and thus, the number of columns of the area to be measured is 1280 columns, and after the area to be measured is shifted to the right of the pixel, a second sub-image with the number of columns being 1279 columns is obtained. Through the left translation and the right translation of the region to be detected respectively, the number of pixels translated left and right is the same, the first sub-image and the second sub-image can be guaranteed to have the same pixel column number, and the first sub-image and the second sub-image can be conveniently overlapped with each other.
In step S211, the pixel shift can be performed on the region to be measured first to the left and then to the right before step S210. Or the region to be measured can be subjected to pixel translation to the right first, and then the region to be measured is subjected to pixel translation to the left.
Step S212, the first sub-image and the second sub-image are combined to generate a first image. Usually, once pixel offset is difficult to completely cover the interval belt, and the combination of the first sub-image and the second sub-image further covers the area of the interval belt, so that the covering effect of the interval belt arranged in columns is ensured.
Referring to fig. 5, a fourth embodiment of the present application is proposed on the basis of the third embodiment of the present application, and the step S22 of generating the second image by shifting pixels up and down to the region to be detected includes:
step S220, performing pixel upper offset on the region to be detected to generate a third sub-image; for example, the area to be measured is 1280×800 pixels, so that the number of lines in the area to be measured is 800 lines, and after the area to be measured shifts on the pixels, a third sub-image with the number of lines of 799 lines is obtained.
Step S221, performing pixel downward 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 lines in the area to be measured is 800, and after the area to be measured is shifted under the pixels, a fourth sub-image with the column number of 799 columns is obtained. Through the upward translation and the downward translation of the region to be detected respectively, the pixel numbers of the upward translation and the downward translation 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 overlapped with each other.
Step S222, combining the third sub-image and the fourth sub-image to generate a second image. Usually, once pixel offset is difficult to completely cover the interval belt, and the combination of the third sub-image and the fourth sub-image further covers the area of the interval belt, so that the covering effect of the interval belt arranged in rows is ensured.
Referring to fig. 6, a schematic view of the offset image 20, and the dark spot 21 in the offset image 20 can be seen.
Referring to fig. 7, a fifth embodiment of the present application is presented based on the first to fourth embodiments of the present application, wherein 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, pixel shifting is performed on the region to be measured, the corresponding interval region of the interval band in the display image is covered, and the step S20 of generating an offset image after pixel shifting includes:
step S40, obtaining an image edge of the display image, filtering out an invalid area according to the image edge, and obtaining an area to be detected in the display image.
After the display screen is processed, a plurality of light transmission areas are usually arranged in the peripheral area of the display screen, and the light transmission areas affect the normal detection of the display screen. By acquiring the image edge position of the display image, invalid areas are filtered out according to the image edge, namely, the areas except the image edge are blackened, so that the influence of the light-transmitting area on the periphery of the display screen is avoided, and the area to be detected with an accurate range is acquired.
Referring to fig. 8, a schematic diagram before filtering out the invalid region is shown, and referring to fig. 9, a schematic diagram after filtering out the point invalid region is shown, wherein the 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, a sixth embodiment of the present application is proposed on the basis of the fifth embodiment of the present application, and step S30 of detecting that a bright-dark difference point in an offset image is an outlier includes:
step S31, binarizing black-and-white processing is carried out on the offset image; specifically, the binarization black-and-white processing is to set a threshold value, wherein when the brightness value in the offset image is lower than the threshold value, the corresponding pixel point is set to be black, and when the brightness value in the offset image is higher than the threshold value, the corresponding pixel point is set to be white. For example, the binary value ranges from 0 to 255, the threshold is set to 150, the brightness value of the pixel point is lower than 150, the corresponding position in the offset image is converted to black, and the brightness value of the pixel point is higher than 150, the corresponding position in the offset image is converted to white.
Step S32, detecting dark points in the offset image subjected to black and white processing, wherein the dark points are abnormal points.
Usually, abnormal pixel points are dark points, and the positions and the number of the dark points are judged by comparing and analyzing brightness values in the black-white post-processing image. That is, a standard value is set, and dark points belonging to the offset image are matched with the standard value.
Step S33, determining the position of the abnormal point of the display screen 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 through the position corresponding relation between the display image and the display screen according to the positions of the abnormal points.
Referring to fig. 11, a seventh embodiment of the present application is proposed on the basis of the sixth embodiment of the present application, and step S31 of performing binarization black-and-white processing on the offset image includes:
step S34, the binarized black-and-white processing offset image is subjected to black-and-white color inversion. In general, white points are more easily detected in a black image, and therefore, the offset image of the binarized black-and-white process is subjected to black-and-white color inversion, that is, the original black point is converted into the white point, and the original white area is converted into the black area, so that the positions and the number of abnormal points are more easily detected.
Referring to fig. 12, an offset image obtained after color inversion is shown, in which a visible white point represents a pixel outlier, and is clearly visible.
Referring to fig. 13, an eighth embodiment of the present application is proposed on the basis of the first embodiment of the present application, and the step S10 of lighting the display screen and acquiring the display image of the display screen includes:
step S11, the display screen is lightened, the brightness of the display screen is improved, the camera is controlled to shoot the display screen, and the display image of the display screen is obtained.
Specifically, by photographing the display screen with the camera, since the abnormal point is usually a dark point, after the brightness of the display screen is improved, the position of the dark point as the display screen can be more emphasized, and thus the position and the number of the abnormal point can be more easily detected.
The application also provides a display screen abnormal point detection device, which comprises: the display screen abnormal point detection device comprises a memory, a processor and a display screen abnormal point detection program, wherein the display screen abnormal point detection program is stored in the memory and can run on the processor; the display screen outlier detection apparatus invokes, by a processor, display screen outlier detection stored in a memory, and performs the following operations
A display screen is lightened, and a display image of the display screen is obtained;
selecting a region to be detected in the display image, performing pixel shifting on the region to be detected to cover a corresponding interval region of the interval band in the display image, and generating a shifting image after performing the pixel shifting;
and detecting the bright and dark difference points in the offset image as abnormal points.
Further, the processor calls a display screen outlier detection program stored in the memory, and also performs the following operations:
the step of selecting the region to be detected in the display image, performing pixel shifting on the region to be detected to cover the interval region corresponding to the interval band in the display image, and generating an offset image after performing the pixel shifting 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;
performing pixel up-down offset on the region to be detected to generate a second image;
and combining the first image and the second image to generate the offset image.
Further, the processor calls a display screen outlier detection program stored in the memory, and also performs the following operations:
the step of selecting the region to be detected in the display image, performing pixel left-right offset on the region to be detected, and generating a 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 offset on the region to be detected to generate a second sub-image;
the first sub-image and the second sub-image are combined to generate the first image.
Further, the processor calls a display screen outlier detection program stored in the memory, and also performs the following operations:
the step of performing pixel up-down offset on the region to be detected to generate a second image includes:
performing pixel upper offset on the region to be detected to generate a third sub-image;
performing pixel lower offset on the region to be detected to generate a fourth sub-image;
and combining the third sub-image and the fourth sub-image to generate the second image.
Further, the processor calls a display screen outlier detection program stored in the memory, and also performs the following operations:
the display image comprises an invalid region outside the image edge and a region to be detected inside the image edge, the region to be detected in the display image is selected, pixel shifting is carried out on the region to be detected so as to cover a corresponding interval region of the interval belt in the display image, and the step of generating an offset image after the pixel shifting comprises the following steps:
and acquiring an image edge of the display image, filtering the invalid region according to the image edge, and acquiring the region to be detected in the display image.
Further, the processor calls a display screen outlier detection program stored in the memory, and also performs the following operations:
the step of detecting that the bright-dark difference point in the offset image is an abnormal point comprises the following steps:
performing binarization black-and-white processing on the offset image;
detecting dark points in the offset image subjected to the black-and-white processing, wherein the dark points are abnormal points;
and determining an abnormal point position of the display screen according to the position of the abnormal point in the display image.
Further, the processor calls a display screen outlier detection program stored in the memory, and also performs the following operations:
the step of binarizing the offset image includes:
and performing black-and-white color inversion on the offset image by the binarized black-and-white processing.
Further, the processor calls a display screen outlier detection program stored in the memory, and also performs the following operations:
the step of lighting up the display screen and acquiring the display image of the display screen comprises the following steps:
the display screen is lightened, the brightness of the display screen is improved, a camera is controlled to shoot the display screen, and a display image of the display screen is obtained
The present application also provides a readable storage medium having stored thereon a display screen outlier detection program which, when executed by a processor, implements the steps of the display screen outlier detection method as described above.
The specific embodiments of the readable storage medium of the present application may refer to the embodiments of the method for detecting abnormal points on a display screen, and 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 one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present application.
The foregoing description of the preferred embodiments of the present application should not be construed as limiting the scope of the application, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the application as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).
Claims (7)
1. A method for detecting abnormal points of a display screen, wherein a spacing band is arranged between every two pixel points of the display screen, the method comprising:
a display screen is lightened, and a display image of the display screen is obtained;
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 offset on the region to be detected to generate a second sub-image;
combining the first sub-image and the second sub-image to generate a first image;
performing pixel upper offset on the region to be detected to generate a third sub-image;
performing pixel lower offset on the region to be detected to generate a fourth sub-image;
combining the third sub-image and the fourth sub-image to generate a second image;
combining the first image and the second image to generate an offset image, wherein offset units of the left offset, the right offset, the upper offset and the lower offset are all one pixel so as to meet the requirement of covering the interval belt;
and detecting the bright and dark difference points in the offset image as abnormal points.
2. The method for detecting abnormal points of a display screen according to claim 1, wherein the display image includes an invalid region outside an image edge and a region to be detected inside the image edge, the selecting the region to be detected in the display image, and performing pixel shifting on the region to be detected to cover a corresponding interval region of the interval band in the display image, and the step of generating a shifted image after performing the pixel shifting includes:
and acquiring an image edge of the display image, filtering the invalid region according to the image edge, and acquiring the region to be detected in the display image.
3. The display screen outlier detection method according to claim 2, wherein said step of detecting that the bright-dark outlier in the offset image is an outlier comprises:
performing binarization black-and-white processing on the offset image;
detecting dark points in the offset image subjected to the black-and-white processing, wherein the dark points are abnormal points;
and determining an abnormal point position of the display screen according to the position of the abnormal point in the display image.
4. The display screen outlier detection method according to claim 3, wherein said step of performing binarization black-and-white processing on said offset image comprises:
and performing black-and-white color inversion on the offset image by the binarized black-and-white processing.
5. The display screen outlier detection method according to claim 1, wherein the step of lighting up the display screen and acquiring the display image of the display screen comprises:
and (3) lighting 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.
6. A display screen outlier detection apparatus, characterized by comprising: the display screen abnormal point detection device comprises a memory, a processor and a display screen abnormal point detection program, wherein the display screen abnormal point detection program is stored in the memory and can run on the processor; the display screen outlier detection program when executed by the processor implements the steps of the display screen outlier detection method according to any one of claims 1 to 5.
7. A readable storage medium, wherein a display screen outlier detection program is stored on the readable storage medium, which when executed by a processor, implements the steps of the display screen outlier detection method according to any one of claims 1 to 5.
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 CN111369923A (en) | 2020-07-03 |
| CN111369923B true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (11)
| 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 |
| 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 |
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2833743B1 (en) * | 2001-12-17 | 2004-02-20 | Eldim | LOW ACQUISITION RESOLUTION PROCESS AND DEVICE FOR THE CONTROL OF A DISPLAY SCREEN |
| US7086736B2 (en) * | 2004-01-20 | 2006-08-08 | Hewlett-Packard Development Company, L.P. | Display system with sequential color and wobble device |
| US8184923B2 (en) * | 2004-04-19 | 2012-05-22 | Semiconductor Energy Laboratory Co., Ltd. | Image analysis method, image analysis program, pixel evaluation system having the image analysis method, and pixel evaluation system having the image analysis program |
| JP2008539675A (en) * | 2005-04-26 | 2008-11-13 | アイマックス コーポレイション | Electronic projection system and method |
-
2020
- 2020-02-26 CN CN202010122139.9A patent/CN111369923B/en active Active
Patent Citations (11)
| 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 |
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111369923A (en) | 2020-07-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108280822B (en) | Screen scratch detection method and device | |
| EP3396942B1 (en) | Image sensor, imaging method and electronic device | |
| 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 | |
| CN111862195A (en) | Light spot detection method and device, terminal and storage medium | |
| CN109905700A (en) | Virtual display device and its detection method, device, computer readable storage medium | |
| CN111707456A (en) | Optical machine definition testing method and testing device | |
| CN110458826A (en) | Ambient brightness detection method and device | |
| CN111369923B (en) | Display screen outlier detection method, detection apparatus, and readable storage medium | |
| CN110620887B (en) | Image generation device and image generation method | |
| JP4242796B2 (en) | Image recognition method and image recognition apparatus | |
| JP6045429B2 (en) | Imaging apparatus, image processing apparatus, and image processing method | |
| JP2009036582A (en) | Inspection method, inspection device and inspection program of plane display panel | |
| CN113191327A (en) | Biological characteristic collection method, chip and computer readable storage medium | |
| CN109612408B (en) | Method and device for testing emission angle of semiconductor laser and readable storage medium | |
| CN110992328A (en) | Dark spot detection method and device | |
| CN115297267A (en) | Method and device for calibrating exposure duration of image acquisition module | |
| CN110288662B (en) | Display detection method and system | |
| CN114170944B (en) | Display device and display brightness adjusting method | |
| JP5931248B1 (en) | Inspection system and inspection method | |
| CN109827759B (en) | Defect detection method and device applied to optical module | |
| KR101472853B1 (en) | System for testing camera module optic axis matching and method for testing camera module optic axis matching using the same | |
| CN111896483B (en) | Detection device and detection method for display effect of display device | |
| CN113038021B (en) | Image shake detection method, image shake detection device and readable storage medium | |
| CN117676122A (en) | Detection method and device of image acquisition device, electronic equipment 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 |
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. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |