A camera module image definition calibration method and device

Abstract

The invention relates to an image pickup module set image definition calibration method and apparatus. The method includes the following steps that: in the shooting range of an image pickup module set, a first calibration surface is arranged in a manner that the first calibration surface directly faces the lens of the image pickup module set, and a plurality of second calibration surfaces are set around the image pickup module set, wherein each second calibration surface faces the image pickup module set, and distances from the first calibration surface to the image pickup module set and from the second calibration surfaces to the image pickup module set are all preset values; and the image pickup module set is adopted to shoot the images of the calibration surfaces, a distance from the lens of the image pickup module set and a light sensing plane is adjusted according to the shot images until images shot by the image pickup module are clear. According to the image pickup module set image definition calibration method and apparatus of the invention, the calibration surfaces are arranged around the image pickup module set, so that the calibration surface images in the large field of view of the image pickup module set can be shot, and therefore, definition calibration can be performed on images in the large field of view of the image pickup module set according to the shot images, and therefore, the calibration of the definition of four corners of the image of a wide-angle camera module set can be realized.

Description

technical field [0001] The invention relates to the technical field of camera modules, in particular to a camera module image definition calibration method and device. Background technique [0002] The wide-angle camera module has a large field of view, generally greater than 90 degrees. When adjusting the focus of the wide-angle camera module to calibrate the image clarity, if a plane drawing is used according to the traditional method, the plane drawing is captured by the camera module Adjust the focal length according to the imaging effect of the captured image, and finally make the image clear in the imaging. However, due to the large field of view of the wide-angle camera module, it is difficult to adjust the clarity of the four corners of the image by using a plane drawing according to the above method. Contents of the invention [0003] In view of this, the present invention provides a method and device for calibrating the sharpness of a camera module image, capable...

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Problems solved by technology

[0002] The wide-angle camera module has a large field of view, generally greater than 90 degrees. When adjusting the focus of the wide-angle camera module to calibrate the image clarity, if a plane drawing is used according to the traditional method, the plane drawing is taken by the camera module Adjust the focal length according to the imaging effect of the captured image, and finally make the image clear in the imaging. However, due to the large field of view of the wide-angle camera module, it is difficult to adjust the clarity of the four corners of the image by using a plane drawing according to the above method.

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