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Camera module tilt test method and device

A technology of camera module and test method, which is applied in image communication, television, electrical components, etc., can solve the problems of low test accuracy, limited application scenarios, recognition failure or analysis error, etc., to improve test accuracy and stability, Wide range of test scenarios, avoiding the effect of errors or test failures

Active Publication Date: 2019-10-25
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can only use specific test charts, the application scenarios are relatively limited, and it involves hypotenuse recognition and analysis, which is prone to recognition failure or analysis error, low test accuracy and poor stability

Method used

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  • Camera module tilt test method and device
  • Camera module tilt test method and device
  • Camera module tilt test method and device

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Embodiment Construction

[0030] Referring to the drawings, wherein the same reference numerals represent the same components, the principles of the present application are exemplified by being implemented in a suitable computing environment. The following description is based on illustrated specific embodiments of the present application, which should not be construed as limiting other specific embodiments of the present application that are not described in detail here.

[0031] In the following description, specific embodiments of the present application will be described with reference to steps and symbols executed by one or more computers, unless otherwise stated. Accordingly, these steps and operations will several times be referred to as being computer-implemented, which herein refers to operations by a computer processing unit of electronic signals representing data in a structured form. This operation transforms the data or maintains it at a location in the computer's memory system that can re...

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Abstract

Disclosed are a degree of incline test method and apparatus for a camera module, and a storage medium and an electronic device. The degree of incline test method comprises: acquiring a preset number of images obtained by a camera module photographing a test picture card; choosing a target area from each of the images; calculating a contrast of the target area in each of the images according to the brightness of a preset pixel in the target area in each of the images; drawing a defocus curve of each target area according to the contrast of the target area in each of the images; and finding, from the defocus curve of each target area, a lens position of a corresponding image when each target area has the maximum contrast, and determining a degree of incline of the camera module according to the lens position of the corresponding image when each target area has the maximum contrast.

Description

technical field [0001] The present application relates to the field of camera module testing, in particular to a method and device for testing the inclination of a camera module. Background technique [0002] During the production process of the camera module, due to the influence of manufacturing and assembly technology or process, there will be non-parallel conditions between the lens and the image sensor in the camera module, that is, there is a certain degree of inclination between the lens and the image sensor. When such a camera module is working, defocusing will occur, resulting in blurred images and poor image quality. Therefore, before leaving the factory, it is necessary to detect the degree of inclination between the lens and the image sensor to ensure product quality. [0003] Existing detection methods are mainly by taking a specific test chart (hypotenuse test chart), and performing hypotenuse recognition and analysis on the captured image to obtain the spatia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00
CPCH04N17/002
Inventor 张乐
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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