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Multi-camera static imaging resolution testing method and device for intelligent terminal

A technology of static imaging and intelligent terminal, applied in image communication, TV, electrical components, etc., to reduce costs

Active Publication Date: 2020-06-23
北京瑞森新谱科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The invention discloses a method for testing the static imaging resolution of multiple cameras of an intelligent terminal, aiming to solve the technical problems existing in the prior art

Method used

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  • Multi-camera static imaging resolution testing method and device for intelligent terminal
  • Multi-camera static imaging resolution testing method and device for intelligent terminal
  • Multi-camera static imaging resolution testing method and device for intelligent terminal

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Experimental program
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Embodiment 1

[0078] to combine Figure 1-3 , the standard picture card has a high degree of consistency, the same version of the picture card and the pictures taken by different conventional cameras are theoretically only different in scale. But wide-angle camera pictures are superimposed with two factors of "zoom" and "distortion". In order to eliminate the distortion factor, the present embodiment provides a method for testing the static imaging resolution of the camera, which converts the distortion map caused by the wide-angle lens into the image of the conventional lens, specifically including:

[0079] Select N feature points from any standard chart image Image0, and build a chart feature point library PointList0(x 0(n) ,y 0(n) ); where N is an integer greater than or equal to 7. In other preferred embodiments, N is an integer greater than or equal to 7; it should be understood that the larger the value of N, that is, when the number of points is greater than 7, such as the number...

Embodiment 2

[0113] combine image 3 , this embodiment provides a method for testing static imaging resolution of multiple cameras of an intelligent terminal, where the intelligent terminal includes at least one wide-angle camera and at least one non-wide-angle camera, image 3 shows different shooting ranges of the wide-angle camera and the non-wide-angle camera, that is, different shooting angles.

[0114] Test methods include:

[0115] Select N feature points from any standard chart image Image0, and build a chart feature point library PointList0(x 0(n) ,y 0(n) ); wherein N is an integer greater than or equal to 7;

[0116] For the map card feature point library PointList0(x 0(n) ,y 0(n) ) for affine transformation, PointList0(x 0(n) ,y 0(n) ) to PointList0(x 1(n) ,y 1(n) ) The affine transformation relationship is as follows:

[0117] x 1(n) =Ax 0(n) +By 0(n) +C

[0118] the y 1(n) =Dx 0 +Ey 0(n) +F

[0119] Get the standard card feature point library PointList0(x 1(...

Embodiment 3

[0131] according to figure 1 As shown, this embodiment provides an intelligent terminal multi-camera static imaging resolution test device, including at least one test station; each of the test stations includes a standard chart, an intelligent terminal test vehicle and a host computer The smart terminal test vehicle is used to fix the smart terminal so that its multiple cameras face the standard graphics card; the host computer is connected to the smart terminal, and according to any of the above test methods, the At least one camera of the smart terminal mentioned above is tested.

[0132] The multi-camera of the smart terminal includes a wide-angle camera, a main camera, a macro camera, a telephoto camera, and a periscope camera. The distance between the intelligent terminal and the standard graphic card is constant. In the process of testing at least one wide-angle camera and at least one non-wide-angle camera of the smart terminal, the distance between the smart termina...

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Abstract

The invention relates to an intelligent terminal multi-camera static imaging resolution testing method and device. The test method comprises the following steps: selecting N feature points from a standard graphic card image, and establishing a graphic card feature point library; using a to-be-measured wide-angle camera to shoot the standard picture card to obtain a shot picture, and calculating coordinates of N shooting feature points corresponding to the feature points; comparing the shooting feature points with a graphic card feature point library to generate N point pair queues; calculatinga distortion model M of the to-be-measured wide-angle camera through the N point pair queues; substituting the picture into the distortion model M to obtain an anti-distortion image; calculating static imaging resolution. The testing device comprises at least one testing station, and each testing station comprises a standard graphic card, an intelligent terminal testing carrier and an upper computer. According to the test method and device, the distortion graph caused by the wide-angle lens is converted into the image of the conventional lens, the test efficiency is improved, the test time isshortened, and the test cost and the equipment procurement cost of a factory are reduced.

Description

technical field [0001] The invention relates to the technical field of intelligent terminal testing, in particular to a method and device for testing static imaging resolution of multiple cameras of an intelligent terminal. Background technique [0002] In the era of smart terminals and multi-cameras, the conventional camera test is carried out for a single camera. With the increasing number of cameras equipped with smart terminals, the existing test methods and devices can no longer meet the needs of the current stage. [0003] In the past, wide-angle lenses were only products of minority groups such as photographers, and the production line was relatively simple. Therefore, spherical or planar charts can be used for targeted testing. However, with the iterative upgrade of shooting equipment on smart terminals, the integration of wide-angle cameras on smart terminals has increasingly become the choice of ordinary consumers. [0004] The resolution of the camera is one of t...

Claims

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Application Information

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IPC IPC(8): H04N17/00
CPCH04N17/002
Inventor 卡斯铁尔·哈帕尼
Owner 北京瑞森新谱科技股份有限公司