CN112687211B - Method and device for measuring smear of display panel and storage medium - Google Patents
Method and device for measuring smear of display panel and storage medium Download PDFInfo
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Abstract
The invention discloses a smear measuring method and device for a display panel and a storage medium. The method comprises the following steps: acquiring x measurement images shot by a shooting device in the process that a display panel to be tested is changed from displaying a first picture to displaying a second picture, wherein the time from displaying the first picture to displaying the second picture is greater than or equal to the change time of two adjacent frames of pictures, the first picture and the second picture both comprise a test object, and the position of the test object in the first picture is different from the position of the test object in the second picture; selecting t target measurement images from the x measurement images according to a preset rule; respectively calculating smear sub-parameters of each target measurement image; and calculating smear parameters according to the smear subparameters of the t target measurement images, wherein the smear parameters are used for evaluating the smear degree of the display panel to be measured. The scheme can realize standard quantification and evaluation of the display panel smear phenomenon.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a method and a device for measuring smear of a display panel and a storage medium.
Background
In the production process of the display panel, in order to ensure the performance and the quality, the smear phenomenon of the display panel needs to be detected and judged. The smear phenomenon is a phenomenon that when a moving object exists in an image displayed on the display panel, the moving object may smear on the display panel, thereby seriously affecting the viewing experience of a user.
The existing smear measuring method of the display panel usually depends on human eyes for observation, but the method has strong subjectivity and low accuracy, so that technical personnel can not comprehensively and pertinently improve the display panel aiming at the smear phenomenon, and the quality and the yield of products are greatly reduced.
Disclosure of Invention
The invention provides a smear measuring method and device of a display panel and a storage medium, which can realize standard quantification and evaluation of a smear phenomenon of the display panel.
In a first aspect, an embodiment of the present invention provides a method for measuring a smear of a display panel, including:
acquiring x measurement images shot by a shooting device in the process that a display panel to be tested is changed from displaying a first picture to displaying a second picture, wherein the time from displaying the first picture to displaying the second picture is greater than or equal to the change time of two adjacent frames of pictures, the first picture and the second picture both comprise a test object, and the position of the test object in the first picture is different from the position of the test object in the second picture;
selecting t target measurement images from the x measurement images according to a preset rule;
respectively calculating smear sub-parameters of each target measurement image;
and calculating smear parameters according to the smear subparameters of the t target measurement images, wherein the smear parameters are used for evaluating the smear degree of the display panel to be measured.
The smear measuring method of the display panel as above, optionally,
wherein f1 is the frame frequency of the display panel to be tested, f2 is the frame frequency of the shooting device,
meaning rounded up, x ≧ 10.
The smear measuring method of the display panel as above, optionally,
or
The resolution of the display panel to be tested is V x H; the display panel to be tested is divided into x areas along the scanning direction, the width of each area is H/x, the resolution of the test object is m x n,
indicating rounding up, t ≧ 1.
According to the smear measurement method of the display panel, optionally, the x measurement images are sequentially arranged according to time sequence;
selecting t target measurement images from x measurement images according to a preset rule, wherein the method comprises the following steps:
sequentially setting x areas divided by the display panel to be detected along the scanning direction as a1 st area to an x-th area;
determining that the test object is located in the jth area to the jth + t-1 area of the display panel to be tested;
j images to j + t-1 images in the x measurement images are selected as t target measurement images.
The smear measuring method of the display panel optionally calculates the smear sub-parameters of each target measurement image separately, and includes:
respectively determining the region to be measured of each target measurement image;
acquiring an actual brightness distribution curve and a reference brightness distribution curve of a region to be measured of each target measurement image;
and determining the smear width and/or the smear degree of each target measurement image according to the actual brightness distribution curve and the reference brightness distribution curve of the region to be measured of each target measurement image, and taking the smear width and/or the smear degree of each target measurement image as the smear sub-parameter of each target measurement image.
The smear measuring method of the display panel as above optionally determines the region to be measured of each target measurement image separately, including:
respectively selecting the j area of the j image to the j + t-1 area of the j + t-1 image in the x measurement images as the area to be measured of the t target measurement images.
Optionally, the smear parameter is an average value of smear sub-parameters of t target measurement images; or,
the smear parameter is the maximum value in smear subparameters of the t target measurement images; or,
the smear parameter is the minimum value of the smear subparameters of the t target measurement images.
The smear measurement method of the display panel as above optionally further comprises:
acquiring a first picture and a second picture;
and controlling the display panel to be measured to change from displaying the first picture to displaying the second picture, and simultaneously controlling the shooting device to shoot x measurement images.
In a second aspect, an embodiment of the present invention further provides a device for measuring a smear of a display panel, including: a processor and a memory, the memory for storing a computer program, the processor for implementing the method of any of the above embodiments when executing the computer program.
In a third aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the method of any one of the foregoing embodiments.
The invention provides a smear measuring method and device of a display panel and a storage medium, wherein a shooting device is used for carrying out real-time snapshot on the process that the display panel to be measured changes from displaying a first picture to displaying a second picture to obtain x measurement images, t target measurement images are selected from the x measurement images, and smear parameters are calculated according to smear sub-parameters of each target measurement image and used for evaluating the smear degree of the display panel to be measured. Therefore, the smear phenomenon can be represented by brightness distribution, and a smear parameter calculation method is provided to realize standard quantification and evaluation of the smear phenomenon of the display panel.
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Fig. 1 is a schematic view of a shooting scene of a smear measuring apparatus of a display panel according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a method for measuring smear on a display panel according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a change from displaying a first image to displaying a second image of a display panel to be tested according to an embodiment of the invention;
fig. 4 is a schematic diagram illustrating region division of a display panel to be tested according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating region division of another display panel to be tested according to an embodiment of the present invention;
fig. 6 is a schematic scanning diagram of a display panel to be tested according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an actual luminance distribution curve and a reference luminance distribution curve of a region to be measured of a target measurement image according to an embodiment of the present invention;
FIG. 8 is a schematic diagram illustrating smear width of a target measurement image according to an embodiment of the present invention;
FIG. 9 is a schematic diagram illustrating the degree of smear of a target measurement image according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a device for measuring smear of a display panel according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Also, unless explicitly described to the contrary, the word "comprise" and variations such as "comprises" or "comprising", will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.
It should also be noted that references to "and/or" in embodiments of the present invention are intended to include any and all combinations of one or more of the associated listed items. Various components are described in embodiments of the present invention with "first", "second", "third", and the like, but these components should not be limited by these terms. These terms are only used to distinguish one component from another component. Also, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
While certain embodiments may be practiced differently, the specific process sequence may be performed differently than described. For example, two consecutively described processes may be performed at substantially the same time or in an order opposite to the described order.
Fig. 1 is a schematic view of a shooting scene of a display panel smear measuring apparatus according to an embodiment of the present invention. As shown in fig. 1, the device for measuring the smear of the display panel includes a processor 1, and the processor 1 is connected to the camera and the display panel to be measured respectively. Specifically, the processor 1 controls the display panel to be tested to display a picture, and controls the shooting device to shoot the picture displayed by the display panel to be tested. The processor 1 is adapted to implement a method as provided by any of the embodiments of the invention described below when executing a computer program.
The shooting device can be a high-speed camera, and the display panel to be detected can be equipment with a display function, specifically, a flat display panel or a curved display panel, and also can be a product containing the display panel. For example, any product or component with a display function, such as a display, a television, a digital camera, a mobile phone, a tablet computer, etc. The display panel to be tested may be a liquid crystal display panel, or may also be a Light-Emitting Diode (LED) (such as an Organic Light-Emitting Diode (OLED), an Active-matrix Organic Light-Emitting Diode (AMOLED), or the like) display panel.
When the smear degree of different display panel that awaits measuring of evaluation, adopt same shooting device to shoot, this shooting device can carry out relative brightness test, shoots the fixed setting of device and display panel that awaits measuring, and light, air humidity etc. shoot the environment and also keep unanimous to guarantee the accuracy of test result.
Fig. 2 is a schematic flow chart illustrating a method for measuring a smear of a display panel according to an embodiment of the present invention. As shown in fig. 2, the method is performed using the smear measuring apparatus of the display panel shown in fig. 1, and includes the following steps.
S101, acquiring a first picture and a second picture.
The first picture and the second picture may be two adjacent pictures or two spaced pictures, and the following embodiments are described by taking the first picture and the second picture as two adjacent pictures as an example. The first screen and the second screen both include a test object, and the position of the test object in the first screen is different from the position of the test object in the second screen.
S102, controlling the display panel to be measured to change from displaying the first picture to displaying the second picture, and simultaneously controlling the shooting device to shoot x measurement images.
Illustratively, the photographing process may include: the processor 1 controls the display panel to be tested to display a first picture and then display a second picture, wherein the first picture and the second picture are two adjacent frames of pictures, the first picture and the second picture both comprise a test object, and the difference between the first picture and the second picture is only that the position of the test object in the first picture is different from the position of the test object in the second picture. Therefore, the process of the display panel to be tested changing from displaying the first picture to displaying the second picture can be approximately seen as the test object moving from the position in the first picture to the position in the second picture. In this process, the processor 1 controls the x measurement images taken by the camera.
For example, the process of changing the display panel under test from displaying the first frame to displaying the second frame may be that a black square (i.e., the test object) slides horizontally in a white background, or a white square (i.e., the test object) slides in a black background. Fig. 3 is a schematic diagram illustrating a change from displaying a first screen to displaying a second screen of a display panel under test according to an embodiment of the present invention. As shown in fig. 3, the first frame and the second frame both have a black square (i.e. the test object) on the white background, and the position of the black square in the first frame is different from the position of the black square in the second frame. When the display panel to be tested is changed from displaying the first picture to displaying the second picture, it can be observed that the black square horizontally slides along the direction shown by the arrow in fig. 3, thereby generating the phenomenon of smear. Optionally, the test object may also be a character, a symbol, an animal, a person, or the like, the color or brightness of which is a color or brightness distinguishable from the background, and the movement direction of the test object may be any direction such as horizontal, vertical, or curved. The following embodiments of the present invention are all exemplified by the black square shown in fig. 3 sliding horizontally in a white background.
S103, acquiring x measurement images shot by the shooting device in the process that the display panel to be detected is changed from displaying the first picture to displaying the second picture.
Wherein,
wherein f1 is the frame frequency of the display panel to be tested, f2 is the frame frequency of the shooting device,
meaning rounded up, x ≧ 10. x is more than or equal to 10, the frame frequency of the shooting device is far greater than that of the display panel to be detected, namely the shooting frequency of the shooting device is far greater than the screen refreshing frequency of the display panel to be detected. For example, the screen refresh rate of the display panel to be tested is 10Hz, and the shooting frequency of the shooting device can reach at least 100 pictures per second. Therefore, between 1/10 seconds when the display panel to be tested changes from displaying the first picture to displaying the second picture, the shooting device will shoot at least 10 images.
And S104, selecting t target measurement images from the x measurement images according to a preset rule.
Fig. 4 is a schematic diagram illustrating region division of a display panel to be tested according to an embodiment of the present invention, and fig. 5 is a schematic diagram illustrating region division of another display panel to be tested according to an embodiment of the present invention. As shown in fig. 4 or 5, the resolution of the display panel to be tested is V × H, the resolution of the test object is m × n, and the scanning direction of the display panel to be tested is line-by-line scanning from top to bottom. Assuming that x is 10, the display panel under test is divided into 10 regions along the scanning direction, and the width of each region is H/10.
In one possible embodiment, when one side of the test object is exactly flush with the edge of a certain area, referring to figure 4,
in another possible embodiment, when neither side of the test object is flush with the edge of the area, referring to figure 4,
or with reference to fig. 5, may occur
The case (1).
Fig. 6 is a schematic diagram illustrating scanning of a display panel to be tested according to an embodiment of the present invention. It is understood that the 10 measurement images are arranged in chronological order. In 10 measurement images shot by the shooting device, when the 1 st measurement image is shot, the display panel to be detected only scans the area 1; when the 2 nd measurement image is shot, the display panel to be measured scans the area 2; …, respectively; when the 10 th measurement image is taken, the display panel to be measured scans the area 10. Referring to fig. 6, when the 4 th measurement image is captured, the display panel to be tested scans the area 4, and the smear phenomenon occurs only in the test object (the portion corresponding to the area 4); when the 5 th measurement image is shot, the display panel to be tested scans the area 5, and the portion of the test object corresponding to the area 5 generates a smear phenomenon (at this time, the smear phenomenon of the portion of the test object corresponding to the area 4 may gradually become lighter, which is not shown in fig. 6); when the 6 th measurement image is shot, the display panel to be tested scans the area 6, and the part of the test object corresponding to the area 6 generates a smear phenomenon (at this time, the smear phenomenon of the part of the test object corresponding to the areas 4 and 5 may become gradually lighter, which is not shown in fig. 6), and at this time, the test object has all the smear phenomenon; when the 7 th to 10 th measurement images are taken, the smear phenomenon of the test object gradually disappears. Therefore, when evaluating the smear degree of the display panel to be tested, only the t-eye mapping quantity image of the test object, which starts to generate the smear phenomenon, needs to be acquired.
That is, the method for selecting t target measurement images from x measurement images according to the preset rule in step S104 may include the following three steps:
step a1, setting the x areas divided by the display panel to be tested along the scanning direction as the 1 st area to the x-th area in sequence.
Step a2, determining that the test object is located in the j-th area to the j + t-1-th area of the display panel to be tested.
Step a3, selecting the jth image to the jth + t-1 image in the x measurement images as t target measurement images.
With continued reference to fig. 6, 10 regions divided along the scanning direction of the display panel to be tested are set as region 1, region 2, …, and region 10 in sequence; it is determined that the test object is located right in the area 4, the area 5 and the area 6 of the display panel to be tested. Therefore, when evaluating the smear degree of the display panel to be tested, only 3 target measurement images (i.e. the 4 th measurement image, the 5 th measurement image and the 6 th measurement image) of the smear phenomenon of the test object need to be acquired.
And S105, respectively calculating the smear sub-parameters of each target measurement image.
Specifically, the method for calculating the smear sub-parameter of each target measurement image in step S105 may include the following three steps:
and b1, respectively determining the area to be measured of each target measurement image.
Specifically, in step b1, the j-th area of the j-th image to the j + t-1-th area of the j + t-1-th image in the x measurement images may be respectively selected as the areas to be measured of the t target measurement images.
With continued reference to fig. 6, for the acquired 3 target measurement images (i.e., the 4 th measurement image, the 5 th measurement image, and the 6 th measurement image), it is determined that the region 4 of the 4 th measurement image is a region to be measured, the region 5 of the 5 th measurement image is a region to be measured, and the region 6 of the 6 th measurement image is a region to be measured. The area to be tested obtained in the way is the area where the test object begins to generate the smear phenomenon according to the scanning sequence, so that the test result is accurate, and the error is reduced.
And b2, acquiring an actual brightness distribution curve and a reference brightness distribution curve of the region to be measured of each target measurement image.
The actual brightness distribution curve of the region to be measured of each target measurement image is recorded as L1-Lt, the reference brightness distribution curve of the region to be measured of each target measurement image is recorded as L1 'to Lt', and the ideal brightness distribution curve is obtained when the region to be measured of each target measurement image does not generate the smear phenomenon. Fig. 7 is a schematic diagram illustrating an actual luminance distribution curve and a reference luminance distribution curve of a region to be measured of a target measurement image according to an embodiment of the present invention.
And b3, determining the smear width and/or the smear degree of each target measurement image according to the actual brightness distribution curve and the reference brightness distribution curve of the region to be measured of each target measurement image, and taking the smear width and/or the smear degree of each target measurement image as the smear subparameter of each target measurement image.
Let L1-L1 ', L2-L2 ', …, Lt-Lt ', determine the smear width and/or the smear degree of each target measurement image. And taking the smear width and/or the smear degree of each target measurement image as a smear subparameter of each target measurement image. Fig. 8 is a schematic diagram illustrating a smear width of a target measurement image according to an embodiment of the present invention, and as shown in fig. 8, a difference between an actual luminance distribution curve of a region to be measured of each target measurement image and a reference luminance distribution curve in a pixel may reflect the smear width. FIG. 9 is a schematic diagram illustrating the degree of smear of a target measurement image according to an embodiment of the present invention, as shown in FIG. 9, the relation between a pixel with changed brightness and its brightness change (i.e., the area of the shaded portion in FIG. 9) reflects the degree of smear, and the smaller the area of the shaded portion in FIG. 9, the lighter the degree of smear is; the larger the area of the hatched portion in fig. 9, the more serious the smear level is represented.
S106, calculating smear parameters according to the smear subparameters of the t target measurement images, wherein the smear parameters are used for evaluating the smear degree of the display panel to be measured.
Specifically, the smear parameter may be calculated according to any one of the following rules:
rule one is as follows: the smear parameter is the mean value of smear sub-parameters of t target measurement images;
rule two: the smear parameter is the maximum value in smear subparameters of the t target measurement images;
rule three: the smear parameter is the minimum value of smear subparameters of the t target measurement images.
It can be understood that when the smear parameter is the average value of the smear sub-parameters of the t target measurement images, the overall smear degree of the display panel to be measured can be reflected; when the smear parameter is the maximum value or the minimum value in the smear sub-parameters of the t target measurement images, the method can be suitable for index detection in the production process of the display panel.
The embodiment of the invention provides a smear measuring method of a display panel, which comprises the following steps: acquiring x measurement images shot by a shooting device in the process that a display panel to be tested is changed from displaying a first picture to displaying a second picture, wherein the time from displaying the first picture to displaying the second picture is greater than or equal to the change time of two adjacent frames of pictures, the first picture and the second picture both comprise a test object, and the position of the test object in the first picture is different from the position of the test object in the second picture; selecting t target measurement images from the x measurement images according to a preset rule; respectively calculating smear sub-parameters of each target measurement image; and calculating smear parameters according to the smear subparameters of the t target measurement images, wherein the smear parameters are used for evaluating the smear degree of the display panel to be measured. The method comprises the steps of carrying out real-time snapshot on the process that a display panel to be detected changes from displaying a first picture to displaying a second picture through a shooting device to obtain x measurement images, selecting t target measurement images from the x measurement images, and calculating a smear parameter according to the smear sub-parameter of each target measurement image to be used for evaluating the smear degree of the display panel to be detected. Therefore, the smear phenomenon can be represented by brightness distribution, and a method for calculating the smear parameter is provided, so that standard quantification and evaluation of the smear phenomenon of the display panel are realized.
An embodiment of the present invention further provides a device for measuring a smear of a display panel, including: a processor and a memory, the memory for storing a computer program, the processor for implementing a method as provided by any of the embodiments of the invention when executing the computer program. Fig. 10 is a schematic structural diagram of a smear measuring apparatus of a display panel according to an embodiment of the present invention, as shown in fig. 10, the smear measuring apparatus of the display panel includes a processor 30, a memory 31, and a communication interface 32; the number of the processors 30 in the smear measuring device of the display panel may be one or more, and one processor 30 is taken as an example in fig. 10; the processor 30, the memory 31, and the communication interface 32 in the smear measuring apparatus of the display panel may be connected by a bus or other means, and fig. 10 illustrates the connection by the bus as an example. A bus represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, and a processor or local bus using any of a variety of bus architectures.
The memory 31, which is a computer-readable storage medium, may be configured to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the methods in the embodiments of the present invention. The processor 30 executes at least one functional application and data processing of the smear measuring apparatus of the display panel by running the software program, instructions and modules stored in the memory 31, that is, the smear measuring method of the display panel is realized.
The memory 31 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of a smear measuring apparatus of the display panel, and the like. Further, the memory 31 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, memory 31 may include memory remotely located from processor 30, which may be connected to the smear measurement device of the display panel via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The communication interface 32 may be configured for the reception and transmission of data.
The embodiment of the present invention further provides a display panel, where the display panel uses the device for measuring smear of the display panel described in the above embodiment to perform smear measurement and evaluation by using the method for measuring smear of the display panel described in the above embodiment. The type of the display panel may be any one of display panels such as an Organic Light-Emitting Diode (OLED) display panel, an In-Plane Switching (IPS) display panel, a Twisted Nematic (TN) display panel, a Vertical Alignment (VA) display panel, electronic paper, a Quantum Dot Light Emitting (QLED) display panel, or a micro LED (micro Light Emitting Diode, μ LED) display panel, which is not particularly limited In this respect. The light emitting mode of the display panel may be top emission, bottom emission, or both-side emission.
Display panel can also encapsulate in display device, and display device can use in intelligent wearing equipment (like intelligent bracelet, intelligent wrist-watch), also can use in smart mobile phone, panel computer, display equipment.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method provided in any embodiment of the present invention.
Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. Computer-readable storage media include (a non-exhaustive list): an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an erasable programmable Read-Only Memory (EPROM), a flash Memory, an optical fiber, a portable Compact Disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of the present invention, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, Radio Frequency (RF), etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, Ruby, Go, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of Network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It will be clear to a person skilled in the art that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a car mounted mobile station.
In general, the various embodiments of the invention may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although the invention is not limited thereto.
Embodiments of the invention may be implemented by a data processor of a mobile device executing computer program instructions, for example in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.
Any logic flow block diagrams in the figures of the present invention may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored on a memory. The memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, Read Only Memory (ROM), Random Access Memory (RAM), optical storage devices and systems (digital versatile disks, DVDs, or CD discs), etc. The computer readable medium may include a non-transitory storage medium. The data processor may be of any type suitable to the local technical environment, such as but not limited to general purpose computers, special purpose computers, microprocessors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Programmable logic devices (FGPAs), and processors based on a multi-core processor architecture.
It is to be noted that the foregoing description is only exemplary of the invention and that the principles of the technology may be employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A method for measuring smear of a display panel, comprising:
acquiring x measurement images shot by a shooting device in the process that a display panel to be tested is changed from displaying a first picture to displaying a second picture, wherein the time from displaying the first picture to displaying the second picture is greater than or equal to the change time of two adjacent frames of pictures, the first picture and the second picture both comprise a test object, and the position of the test object in the first picture is different from the position of the test object in the second picture;
selecting t target measurement images from the x measurement images according to a preset rule;
respectively calculating smear sub-parameters of each target measurement image;
calculating a smear parameter according to smear subparameters of the t target measurement images, wherein the smear parameter is used for evaluating the smear degree of the display panel to be tested;
2. The smear measurement method of a display panel according to claim 1, wherein the x measurement images are arranged in chronological order;
selecting t target measurement images from the x measurement images according to a preset rule, wherein the method comprises the following steps:
setting x areas divided by the display panel to be detected along the scanning direction as a1 st area to an x th area in sequence;
determining that the test object is located in the j-th area to the j + t-1-th area of the display panel to be tested;
and selecting j to j + t-1 images of the x measurement images as the t target measurement images.
3. The method for measuring smear of a display panel according to claim 2, wherein the separately calculating smear subparameters of each of the target measurement images comprises:
respectively determining the region to be measured of each target measurement image;
acquiring an actual brightness distribution curve and a reference brightness distribution curve of a region to be measured of each target measurement image;
and determining the smear width and/or the smear degree of each target measurement image according to the actual brightness distribution curve and the reference brightness distribution curve of the area to be measured of each target measurement image, and taking the smear width and/or the smear degree of each target measurement image as a smear sub-parameter of each target measurement image.
4. The method for measuring smear of a display panel according to claim 3, wherein the separately determining the region to be measured of each target measurement image comprises:
and respectively selecting the j area of the j image to the j + t-1 area of the j + t-1 image in the x measurement images as the area to be measured of the t target measurement images.
5. The method for measuring smear of a display panel according to claim 1,
the smear parameter is the mean value of smear sub-parameters of t target measurement images; or,
the smear parameter is the maximum value in smear subparameters of the t target measurement images; or,
and the smear parameter is the minimum value in smear subparameters of the t target measurement images.
6. The method for measuring smear of a display panel according to claim 1, further comprising:
acquiring the first picture and the second picture;
and controlling the shooting device to shoot x measurement images while controlling the display panel to be tested to change from displaying a first picture to displaying a second picture.
7. A smear measurement apparatus of a display panel, comprising: a processor and a memory for storing a computer program, the processor being adapted to implement the method of smear measurement for a display panel as claimed in any one of claims 1-6 when executing the computer program.
8. A computer-readable storage medium, storing a computer program, wherein the computer program, when executed by a processor, implements the smear measurement method of the display panel according to any one of claims 1 to 6.
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