Camera module testing method based on lattice standard board

Abstract

The invention discloses a camera module testing method based on a lattice standard board. The testing method comprises the following steps: a database related to attributes of all intersection points in an image of the lattice standard board is provided; the camera module photographs the lattice standard board to acquire the image of the lattice standard board; all corner points in the image of the lattice standard board are captured; the attributes of the corner points and the attributes of the intersection points in the database are compared to determine positions of the corner points in the lattice standard board; and according to the positions of the corner points in the lattice standard board and the coordinates of the corner points, the coordinates of a target area are determined to calculate the value of the target area, and testing on the camera module is thus completed.

Description

technical field [0001] The invention relates to the field of testing of camera modules, in particular to a method for testing camera modules based on a grid-shaped standard plate. Background technique [0002] As a terminal for obtaining images, the camera module is one of the standard configurations of electronic devices such as mobile phones and tablet computers. In recent years, with the rapid advancement of the technology of these electronic devices and the popularity of these electronic devices in daily life, users have put forward more stringent requirements for the relevant parameters and functions of the camera module, the most typical is the user The camera modules that need to be configured on these electronic devices can provide them with higher quality images. This demand in the market first puts forward higher requirements for the manufacturing process of the camera module. [0003] During the manufacturing process of the camera module, performing a series of ...

AI Technical Summary

Problems solved by technology

Such a test process not only leads to a relatively large amount of calculation and a relatively time-consuming calculation process, but also it is difficult to guarantee the accuracy of these test items for the camera module.

In addition, due to errors in each camera module, such as the existence of inconsistent eccentricity, the parameters of each camera module are not completely consistent, and when these test items are executed on the camera module, grid-shaped standard plates will occur. Slight movement (such as horizontal movement, vertical movement, tilt movement, etc.) will cause the position of the grid-shaped standard plate in the image of the camera module to change. The target area of ​​the standard plate will also change, resulting in relatively low accuracy of the test results of the camera module obtained by this manual testing method in the prior art

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