Optical axis included angle calibrating and focusing method and system and double-camera equipment

Abstract

The invention provides an optical axis included angle calibrating and focusing method and system and double-camera equipment. The calibrating method includes the steps that focusing is conducted on any feature point of a shot object, so that a first object distance value is acquired; the first imaging point coordinate value of the feature point on a first camera is determined; the second imaging point coordinate value of the feature point on a second camera is determined; the optical axis included angle of the double-camera equipment is determined according to the first imaging point coordinate value, the second imaging point coordinate value, the prestored parameters of the double-camera equipment, the first object distance value and a prestored optical axis included angle calculation formula. According to the technical scheme, self-calibration focusing of the double-camera equipment is achieved.

Description

technical field [0001] The present invention relates to the technical field of optical focusing, in particular to a method and system for calibrating an included angle of an optical axis, a focusing method and system, and a dual-camera device. Background technique [0002] In related technologies, in order to achieve a better focusing effect during the shooting process, dual cameras are developed and applied to various shooting devices. Point imaging to form two imaging points, according to the distance between the two imaging points and the center point of the optical axis point on the imaging plane and the equivalent focal length, determine the object distance value from the object to be photographed to the lens plane, and then determine the focusing process The distance the camera moves. [0003] However, the above process is based on the ideal situation where the two optical axes are parallel. When the optical axis of the shooting equipment is shifted due to manufacturi...

AI Technical Summary

Problems solved by technology

[0003] However, the above process is based on the ideal situation where the two optical axes are parallel. When the optical axis of the shooting equipment is shifted due to manufacturing process deviation or external force collision, determining the object distance value according to the ideal situation will cause serious focus deviation and affect the user's Shooting effect and experience

[0004] After applying the closed-loop motor technology to the dual-lens shooting technology, although it is possible to measure the lens displacement based on the Hall sensor, it cannot self-calibrate the optical axis angle parameters.

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