Method for laser-assisted automatic focusing, and apparatus

Abstract

The embodiment of the invention discloses a method for laser-assisted automatic focusing. The method comprises: a laser-assisted focusing function starting instruction is received to activate a laser-assisted focusing function; a camera shooting instruction is received to start laser-assisted focusing; according to the focusing position of the camera, laser pulse transmitter and receiver are rotated and a low-intensity laser pulse is sent to the focusing position of the camera by the laser pulse transmitter; the laser pulse receiver receives the reflected low-intensity laser pulse, and a distance between an intelligent terminal and the focusing position of the camera is calculated according to time between sending the low-intensity laser pulse and receiving the low-intensity laser pulse; and according to the distance between the intelligent terminal and the focusing position of the camera, an image distance of the camera is set and focusing is carried out. According to the technical scheme provided by the embodiment of the invention, the laser pulse transmitter and receiver can be rotated according a focusing position needed by a user and laser-assisted automatic focusing at different focusing positions is supported, so that the automatic focusing precision of the intelligent terminal is improved and thus the user experience is improved.

Description

technical field [0001] The present invention relates to the field of intelligent terminals, in particular to a method and device for laser-assisted auto-focusing. Background technique [0002] With the popularization and application of mobile terminals, mobile devices such as mobile phones have become indispensable in life, and various functions attached to mobile devices have attracted more and more attention. In daily life, smart terminals have basically replaced card cameras. As a photography tool for people. [0003] The autofocus of the smart terminal is different from that of ordinary cameras in that it cannot adjust the photosensitive element. Therefore, the autofocus function of the smart terminal is essentially through the data calculation method of the Image Signal Processor (ISP, ImageSignalProcessor), that is, when the viewfinder captures the original image, the image data is sent to the ISP as the original data, and the ISP The raw data is then analyzed to exa...

AI Technical Summary

Problems solved by technology

However, the current focus position of laser-assisted focusing is the center of the display screen. When the focus position required by the user is not the center position, effective laser-assisted focusing cannot be achieved.

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