Control method, control device, depth camera and electronic device

Abstract

The invention discloses a control method, a control device, a depth camera and an electronic device of a laser projection module. The laser projection module includes a laser transmitter. The laser transmitter includes a point light source formed with a plurality of independently controlled light-emitting arrays. The control method includes turning on a predetermined number of the light-emitting arrays to detect the projection distance between the user and the laser projection module, determining the target number of the light-emitting array according to the projection distance, and turning on the point light sources in the target number of light-emitting arrays. The control method, control device, depth camera and electronic device according to the embodiments of the present invention divide the point light source into a plurality of independently controllable light-emitting arrays, and turn on a predetermined number of light-emitting arrays when the laser projection module is working to detect the user and the laser projection. The projection distance of the module is determined, and then the number of targets of the light-emitting array is determined according to the projection distance. In this way, it can avoid the problem that the number of light-emitting arrays turned on is too large, resulting in the problem of excessive laser energy that is harmful to the user's eyes.

Description

technical field [0001] The invention relates to the field of imaging technology, in particular to a control method of a laser projection module, a control device of the laser projection module, a depth camera and an electronic device. Background technique [0002] The laser projector can project a laser with predetermined pattern information, and project the laser onto the target user in the space, and then obtain the laser pattern reflected by the target user through the imaging device, so as to further obtain the depth image of the target user, however, Improper control of the laser projected by the laser projector is likely to cause injury to the user. Contents of the invention [0003] Embodiments of the present invention provide a control method of a laser projection module, a control device of the laser projection module, a depth camera and an electronic device. [0004] The present invention provides a method for controlling a laser projection module. The laser pro...

AI Technical Summary

Problems solved by technology

[0002] The laser projector can project a laser with predetermined pattern information, and project the laser onto the target user in the space, and then obtain the laser pattern reflected by the target user through the imaging device, so as to further obtain the depth image of the target user, however, Improper control of the laser projected by the laser projector is likely to cause harm to the user

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