CN113612990A - Method, device, equipment and medium for testing resolving power of camera module - Google Patents

Method, device, equipment and medium for testing resolving power of camera module Download PDF

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Publication number
CN113612990A
CN113612990A CN202110927651.5A CN202110927651A CN113612990A CN 113612990 A CN113612990 A CN 113612990A CN 202110927651 A CN202110927651 A CN 202110927651A CN 113612990 A CN113612990 A CN 113612990A
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field
test
camera module
determining
target rectangular
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王兴源
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Kunshan Q Technology Co Ltd
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Kunshan Q Technology Co Ltd
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Priority to CN202110927651.5A priority Critical patent/CN113612990A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00Diagnosis, testing or measuring for television systems or their details
    • H04N17/002Diagnosis, testing or measuring for television systems or their details for television cameras

Abstract

The invention discloses a method, a device, equipment and a medium for testing the resolving power of a camera module, wherein the method comprises the following steps: determining the position of a field point on a test chart according to a preset field condition, wherein the test chart is an imaging chart obtained by shooting a checkerboard chart by the camera module; determining N target rectangular squares on the test chart according to the position of the field-of-view point and the position of a preset reference point and a preset rule, wherein N is greater than or equal to 1; and according to the N target rectangular grids, carrying out analysis force test on the camera module. The method, the device, the equipment and the medium provided by the invention are used for solving the technical problems that the existing test grab frame is unstable, so that the analysis force test result is changed, and the later-stage data analysis and yield analysis are not facilitated. The technical effect of improving the stability of the grabbing frame is achieved.

Description

Method, device, equipment and medium for testing resolving power of camera module
Technical Field
The invention relates to the technical field of testing, in particular to a method, a device, equipment and a medium for testing resolving power of a camera module.
Background
Before the camera module leaves the factory, various tests are required to be carried out to ensure the shooting quality of the module, wherein the tests comprise analytic force tests. When the analytical force test is carried out, the checkerboard graph is used as a test environment graph, and the test effect is better.
Currently, when a frame is tested (a rectangular grid for testing is determined), the rectangular grid of the frame is determined according to the position of a field point. However, the positions of the rectangular grid which is grabbed are unstable and the phenomenon of grid jumping easily occurs when the frame is grabbed every time, and even if the software is restarted under the condition of unchanged environment, the grabbed grids can be different (for example, the grabbed grids are changed between two grids which are at the same distance with the view point). This results in a variation in the analytical force test results, which is not favorable for later data analysis and yield analysis.
Disclosure of Invention
In view of the above, the present invention has been made to provide a method, an apparatus, a device, and a medium for testing resolution of a camera module that overcome or at least partially solve the above problems.
In a first aspect, a method for testing an analytic force of a camera module is provided, including:
determining the position of a field point on a test chart according to a preset field condition, wherein the test chart is an imaging chart obtained by shooting a checkerboard chart by a camera module;
determining N target rectangular squares on the test chart according to the position of the field-of-view point and the position of a preset reference point and a preset rule, wherein N is greater than or equal to 1;
and according to the N target rectangular grids, carrying out analysis force test on the camera module.
Optionally, the test chart is divided into M sub-regions, each sub-region is provided with one reference point correspondingly, and each sub-region corresponds to one field-of-view point; the method for determining N target rectangular squares on the test chart according to the position of the field of view point and the position of a preset reference point and a preset rule comprises the following steps: and determining corresponding target rectangular grids in each sub-region according to the position of the field-of-view point in each sub-region and the position of the reference point corresponding to each sub-region according to a preset rule, wherein N target rectangular grids are determined in the M sub-regions.
Optionally, the performing, according to the N target rectangular squares, an analysis force test of the camera module includes: respectively carrying out analysis force test on the camera module on the target rectangular grids in each sub-area; and synthesizing the analysis force test result of each sub-area, and averaging to obtain the target test result of the camera module.
Optionally, the determining N target rectangular squares on the test chart according to the position of the field of view point and the position of a preset reference point according to a preset rule includes: according to the position of the field-of-view point, determining a rectangular grid group closest to the field-of-view point on the test chart; and determining N target rectangular squares from the rectangular square group according to the preset rule and the preset position of the reference point.
Optionally, the determining N target rectangular squares on the test chart according to the position of the field of view point and the position of a preset reference point according to a preset rule includes: taking the position of the field-of-view point as a center, and grabbing a local graph on the test graph; calculating the distance value between each rectangular square in the local graph and the field of view point; and determining N target rectangular squares on the local graph according to the distance value and the position of a preset reference point and a preset rule.
Optionally, before determining the position of the field of view point on the test chart, the method further includes: and carrying out binarization and ring opening and closing processing on the black and white test chart alternately to obtain the rectangular square frame test chart.
Optionally, the performing, according to the N target rectangular squares, an analysis force test of the camera module includes: and according to the N target rectangular grids, carrying out a space frequency response test of the camera module.
In a second aspect, an analytic force testing apparatus for a camera module is provided, which includes:
the determining module is used for determining the position of a field point on a test chart according to a preset field condition, wherein the test chart is an imaging chart obtained by shooting a checkerboard chart by the camera module;
the grabbing module is used for determining N target rectangular grids on the test chart according to the position of the field of view point and the position of a preset reference point and a preset rule, wherein N is greater than or equal to 1;
and the test module is used for carrying out analysis force test on the camera module according to the N target rectangular grids.
In a third aspect, an electronic device is provided, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing any of the method steps of the first aspect when executing the program.
In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the method steps of any one of the first aspect.
The technical scheme provided by the embodiment of the invention at least has the following technical effects or advantages:
according to the method, the device, the equipment and the medium for testing the resolving power of the camera module, after the position of the field of view point is determined according to the preset field of view condition, the N target rectangular grids are determined together according to the preset rule to test the resolving power according to the position of the field of view point and the preset reference point as reference factors. The problem that the positions of the grabbed rectangular grids are unstable when the target rectangular grids are determined only according to the positions of the field of view points is avoided, the grabbing stability of the grids is effectively guaranteed, and the stability of the analytic force test result is further guaranteed.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a flowchart of a method for testing resolution of a camera module according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a black and white checkerboard in an embodiment of the present invention;
FIG. 3 is a schematic illustration of a processed test chart according to an embodiment of the present invention;
FIG. 4 is a first diagram illustrating a captured partial view according to an embodiment of the present invention;
FIG. 5 is a second diagram illustrating a second partial view of a capture in accordance with an embodiment of the present invention;
FIG. 6 is a diagram illustrating zoning of a test chart according to an embodiment of the present invention;
FIG. 7 is a first schematic diagram illustrating a first method of determining a target rectangular grid after partitioning a test pattern according to an embodiment of the present invention;
FIG. 8 is a second schematic diagram illustrating the determination of target rectangular squares after partitioning the test pattern according to the embodiment of the present invention;
FIG. 9 is a schematic structural diagram of an apparatus according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of an electronic device according to an embodiment of the invention;
FIG. 11 is a schematic structural diagram of a storage medium according to an embodiment of the present invention.
Detailed Description
The technical scheme in the embodiment of the invention has the following general idea:
in this embodiment, the position of a field point is determined on a test chart according to a preset field condition, and then N target rectangular squares are determined on the test chart according to a preset rule according to the position of the field point and the position of a preset reference point. And according to the N target rectangular grids, carrying out analysis force test on the camera module. The problem that the positions of the grabbed rectangular grids are unstable when the target rectangular grids are determined only according to the positions of the field of view points is avoided, the grabbing stability of the grids is effectively guaranteed, and the stability of the analytic force test result is further guaranteed.
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The embodiment provides a method for testing the resolving power of a camera module, as shown in fig. 1, including:
step S101, determining the position of a field point on a test chart according to a preset field condition, wherein the test chart is an imaging chart obtained by shooting a checkerboard chart by a camera module;
step S102, determining N target rectangular grids on the test chart according to the position of the field point and the position of a preset reference point and a preset rule, wherein N is greater than or equal to 1;
and step S103, carrying out analysis force test on the camera module according to the N target rectangular grids.
It should be noted that the analytic force testing method may be applied to a computer, a tester, or other separate computing devices, may also be applied to a computing module integrated on a test production line, and may also be applied to a computing chip integrated in a camera module, which is not limited herein and is not listed.
The following describes in detail implementation steps of the method provided in this embodiment with reference to fig. 1:
firstly, step S101 is executed, and a position of a field point is determined on a test chart according to a preset field condition, wherein the test chart is an imaging chart obtained by the camera module shooting a checkerboard chart.
The checkerboard pattern for the camera module test is mostly a black and white alternating pattern, and before or after the field of view point is determined, binarization and ring opening and closing processing can be performed on the black and white alternating test pattern obtained by shooting the checkerboard pattern by the camera module to obtain a rectangular square frame-shaped test pattern. Specifically, the binary processing of the black-and-white alternating test chart shown in fig. 2 is firstly performed to obtain a binary chart, and then the open-and-close loop processing of the binary chart is realized by adopting the steps of black point removal, expansion, corrosion, point removal, edge visualization, connection processing and the like inside and outside a rectangle, so as to form the rectangular square frame-shaped test chart shown in fig. 3.
In the specific implementation process, before the analytic force test is performed, the field of view condition of the test needs to be determined, and the field of view condition may be provided by a customer request of a camera module manufacturer, or may be empirical data, which is not limited herein. The field condition may be a field parameter, specifically, a ratio of a distance between a field point to be tested and the center of the test chart divided by a distance between the center of the test chart and the vertex of the border of the test chart, for example, is 0.8, 0.7, or 0, where a field condition of 0 means that the center of the test chart is used as the field point.
The position of the field of view point is determined according to the field of view condition, and a plurality of field of view points meeting the condition can be determined for testing, so that the analytical force test result under the field of view condition can be more comprehensively evaluated. For example, when the field condition is 0.7, 2 field points may be determined on both sides of each diagonal line in the test chart at the center of the test chart, and 4 field points may be determined by the two diagonal lines. Of course, only one field of view point may be determined, and is not limited herein.
And then, executing step S102, and determining N target rectangular squares on the test chart according to the position of the field of view point and the position of a preset reference point and a preset rule, wherein N is greater than or equal to 1.
In a specific implementation process, the reference point may be a vertex of the frame of the test chart or a midpoint of the frame, or may be a point at any fixed position in the test chart, which is not limited herein, because the field of view point is usually disposed on a diagonal line of the test chart, and therefore, setting the reference point as the vertex of the frame of the test chart can reduce subsequent calculation amount.
Specifically, since the resolution at the field point is to be tested, the determined target rectangular grid needs to be representative of the position of the field point, so that a rectangular grid group closest to the field point may be determined on the test chart according to the position of the field point, for example, the rectangular grid group may be 4 rectangular grids closest to the field point, or the rectangular grid group may be rectangular grids closest to the field point and having equal distances. And determining N target rectangular squares from the rectangular square group according to the position of a preset reference point and a preset rule. For example, the preset rule is set as: selecting a rectangular grid farthest from the reference point in the rectangular grid group as a target rectangular grid; or the preset rule is as follows: selecting two rectangular grids which are farthest away from the reference point and are positioned in the same row in the rectangular grid group as target rectangular grids; or the preset rule is as follows: and selecting two rectangular squares which are positioned in the same column and are closest to the reference point in the rectangular square grid group as target rectangular squares. Specifically, the preset rule may be set as needed, as long as the stability of the target rectangular grid determined each time can be ensured, and is not limited herein, and is not listed.
Further, in order to reduce the amount of calculation, it is also possible to capture a partial map ROI on the test chart by taking the position of the field of view point as the center, for example, setting to capture a partial map as shown in fig. 4 including at least 4 complete rectangular squares, or capture a partial map with a specified side length. And calculating the distance value between each rectangular square in the local graph and the field of view point, and specifically calculating the distance value between the center of each rectangular square and the field of view point. And determining N target rectangular squares on the local graph according to the calculated distance value and the position of a preset reference point and a preset rule. For example, the local graph shown in fig. 4 is captured first, the distance value between each rectangular grid in the local graph and the field of view point O is calculated, and if 4 rectangular grids are the same and closest to the field of view point O as shown in fig. 5, the target rectangular grid is determined from the 4 rectangular grids according to the preset rule and the position of the reference point.
Preferably, when there are a plurality of field points, in order to avoid grabbing the back to every field point square, snatching the square of other field points and producing the interference, also in order to reduce the calculation volume of carrying out square to every field point, this application still sets up and divides the test chart into M subregion, every subregion correspondence is provided with a benchmark, corresponds in every subregion has a field point. For example, as shown in fig. 6, the test chart is divided into A, B, C and D four sub-areas, as shown in fig. 7, each of which has a field of view point O, and each of which has a reference point K at the upper left corner.
After the regions are divided, according to the position of the field point in each sub-region and the position of the reference point corresponding to each sub-region, determining corresponding target rectangular grids in each sub-region according to a preset rule, wherein N target rectangular grids are determined in the M sub-regions. The method of determining the target rectangular grid in each sub-area is the same as the method of determining the target rectangular grid according to the position of the field of view point and the position of the reference point, and will not be described in detail herein. For example, as shown in fig. 7, a closest rectangular grid group (black filled grid) is determined at each of the viewing point positions of the sub-areas according to the viewing point positions, where two rectangular grid groups in the D area have the same distance from the viewing point, and then a target rectangular grid (black filled grid) as shown in fig. 8 is determined according to a preset rule according to the position of the reference point. Of course, each sub-region may be fixed to define 2 or 3 target rectangular squares, which is not limited herein.
Next, step S103 is executed to perform an analysis force test of the camera module according to the N target rectangular squares.
In particular implementations, the analytical force test includes a Modulation Transfer Function (MTF) test and a Spatial Frequency Response (SFR) test. Preferably, the spatial frequency response test of the camera module is performed according to the N target rectangular grids. Because the effect of the test by adopting the checkerboard pattern in the space frequency response test is better.
Furthermore, in order to ensure the accuracy of the tested test result, the method can also be arranged for dividing the test chart into M sub-areas, and after the target rectangular grids are determined in each sub-area, respectively performing the analysis force test of the camera module on the target rectangular grids in each sub-area. And then, the analysis force test result of each subarea is integrated, and the average value is taken to obtain a more accurate and comprehensive target test result of the camera module. The test result can more accurately represent the resolving power condition of the camera module under the field condition.
Based on the same inventive concept, an embodiment of the present invention further provides an analysis force testing apparatus for a camera module, as shown in fig. 9, including:
a determining module 901, configured to determine, according to a preset field condition, a position of a field point on a test chart, where the test chart is an imaging chart obtained by shooting a checkerboard chart by the camera module;
a capturing module 902, configured to determine N target rectangular squares on the test chart according to a preset rule according to the position of the field of view point and a preset reference point, where N is greater than or equal to 1;
and the test module 903 is used for carrying out analysis force test on the camera module according to the N target rectangular grids.
The device may be a computer, a tester, or other separate computing devices, may also be a computing module integrated on a test production line, and may also be a computing chip integrated in a camera module, and the like, which is not limited herein.
Since the apparatus described in the embodiment of the present invention is an apparatus used for implementing the method in the embodiment of the present invention, a person skilled in the art can understand the specific structure and the deformation of the apparatus based on the method described in the embodiment of the present invention, and thus the detailed description is omitted here. All devices adopted by the method of the embodiment of the invention belong to the protection scope of the invention.
Based on the same inventive concept, an electronic device according to an embodiment of the present invention is further provided, as shown in fig. 10, including a memory 1010, a processor 1020, and a computer program 1011 stored on the memory 1010 and executable on the processor 1020, where the processor 1020 executes the computer program 1011 to implement the following steps:
determining the position of a field point on a test chart according to a preset field condition, wherein the test chart is an imaging chart obtained by shooting a checkerboard chart by the camera module;
determining N target rectangular squares on the test chart according to the position of the field-of-view point and the position of a preset reference point and a preset rule, wherein N is greater than or equal to 1;
and according to the N target rectangular grids, carrying out analysis force test on the camera module.
In the embodiment of the present invention, when the processor 1020 executes the computer program 1011, any one of the methods of the embodiment of the present invention may be implemented.
Since the electronic device described in the embodiment of the present invention is a device used for implementing the method in the embodiment of the present invention, a person skilled in the art can understand the specific structure and the deformation of the device based on the method described in the embodiment of the present invention, and thus details are not described herein. All the devices adopted by the method of the embodiment of the invention belong to the protection scope of the invention.
Based on the same inventive concept, an embodiment of the present invention further provides a computer-readable storage medium 1100, as shown in fig. 11, on which a computer program 1111 is stored, and when the computer program 1111 is executed by a processor, the computer program 1111 implements the following steps:
determining the position of a field point on a test chart according to a preset field condition, wherein the test chart is an imaging chart obtained by shooting a checkerboard chart by the camera module;
determining N target rectangular squares on the test chart according to the position of the field-of-view point and the position of a preset reference point and a preset rule, wherein N is greater than or equal to 1;
and according to the N target rectangular grids, carrying out analysis force test on the camera module.
In particular, the computer program 1111, when executed by a processor, may implement any of the methods of the embodiments of the present invention.
Since the storage medium described in the embodiment of the present invention is a storage medium where a computer program corresponding to a method for implementing the embodiment of the present invention is located, based on the method described in the embodiment of the present invention, a person skilled in the art can know the computer program stored in the storage medium, and thus details are not described here. Any storage medium on which a computer program of the method of the embodiment of the present invention is stored falls within the scope of the present invention.
The technical scheme provided by the embodiment of the invention at least has the following technical effects or advantages:
according to the method, the device, the equipment and the medium for testing the resolving power of the camera module, after the position of the field of view point is determined according to the preset field of view condition, the N target rectangular grids are determined together according to the preset rule to test the resolving power according to the position of the field of view point and the preset reference point as reference factors. The problem that the positions of the grabbed rectangular grids are unstable when the target rectangular grids are determined only according to the positions of the field of view points is avoided, the grabbing stability of the grids is effectively guaranteed, and the stability of the analytic force test result is further guaranteed.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functionality of some or all of the components of an apparatus, device, or device according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

Claims (10)

1. The utility model provides a method for testing the resolving power of a camera module, which is characterized by comprising the following steps:
determining the position of a field point on a test chart according to a preset field condition, wherein the test chart is an imaging chart obtained by shooting a checkerboard chart by a camera module;
determining N target rectangular squares on the test chart according to the position of the field-of-view point and the position of a preset reference point and a preset rule, wherein N is greater than or equal to 1;
and according to the N target rectangular grids, carrying out analysis force test on the camera module.
2. The method of claim 1, wherein the test pattern is divided into M sub-regions, each sub-region is provided with one reference point, and each sub-region is provided with one field-of-view point;
the method for determining N target rectangular squares on the test chart according to the position of the field of view point and the position of a preset reference point and a preset rule comprises the following steps:
and determining corresponding target rectangular grids in each sub-region according to the position of the field-of-view point in each sub-region and the position of the reference point corresponding to each sub-region according to a preset rule, wherein N target rectangular grids are determined in the M sub-regions.
3. The method of claim 2, wherein performing a resolution test of the camera module based on the N target rectangular tiles comprises:
respectively carrying out analysis force test on the camera module on the target rectangular grids in each sub-area;
and synthesizing the analysis force test result of each sub-area, and averaging to obtain the target test result of the camera module.
4. The method of claim 1, wherein said determining N target rectangular squares on said test chart according to a predetermined rule based on the position of said field of view point and the position of a predetermined reference point comprises:
according to the position of the field-of-view point, determining a rectangular grid group closest to the field-of-view point on the test chart;
and determining N target rectangular squares from the rectangular square group according to the preset rule and the preset position of the reference point.
5. The method of claim 1, wherein said determining N target rectangular squares on said test chart according to a predetermined rule based on the position of said field of view point and the position of a predetermined reference point comprises:
taking the position of the field-of-view point as a center, and grabbing a local graph on the test graph;
calculating the distance value between each rectangular square in the local graph and the field of view point;
and determining N target rectangular squares on the local graph according to the distance value and the position of a preset reference point and a preset rule.
6. The method of claim 1, prior to said determining the location of the field of view point on the test chart, further comprising:
and carrying out binarization and ring opening and closing processing on the black and white test chart alternately to obtain the rectangular square frame test chart.
7. The method according to any one of claims 1-6, wherein said performing a resolution test of said camera module based on said N target rectangular tiles comprises:
and according to the N target rectangular grids, carrying out a space frequency response test of the camera module.
8. The utility model provides an analytic power testing arrangement of module of making a video recording which characterized in that includes:
the determining module is used for determining the position of a field point on a test chart according to a preset field condition, wherein the test chart is an imaging chart obtained by shooting a checkerboard chart by the camera module;
the grabbing module is used for determining N target rectangular grids on the test chart according to the position of the field of view point and the position of a preset reference point and a preset rule, wherein N is greater than or equal to 1;
and the test module is used for carrying out analysis force test on the camera module according to the N target rectangular grids.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of any of claims 1-7 are implemented when the program is executed by the processor.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
CN202110927651.5A 2021-08-13 2021-08-13 Method, device, equipment and medium for testing resolving power of camera module Pending CN113612990A (en)

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