Working method and device of smart phone structured light depth camera

Abstract

The invention discloses a working method and device for a structured light depth camera of a smart phone. An RGB camera synchronous trigger mode or an RGB camera active trigger mode is adopted; exposure time lengths, on / off sequences and the like of the RGB camera, an infrared laser coding pattern projector, an infrared floodlight source and an infrared IR camera are synchronously controlled; an RGB image is acquired through an RGB camera; the infrared IR camera acquires an infrared image or an infrared coded image; wherein the infrared coded image is subjected to depth perception decoding toobtain a depth image; according to the method and the device, the sequence and the exposure time of the projector, the floodlight source, the RGB receiving camera and the IR receiving camera can be synchronously controlled, so that the working power consumption of the structured light depth camera in the application processes of 3D selfie, face unlocking and 3D scanning reconstruction of a smart phone can be greatly reduced.

Description

technical field [0001] The invention belongs to the technical fields of mobile communication, image processing, computer vision and integrated circuits, and in particular relates to a working method and device of a structured light depth camera for a smart phone. Background technique [0002] As the main goal of human vision research, 3D reconstruction is an important direction in the field of computer vision. It mainly uses certain technical means to realize the shape modeling of three-dimensional objects. With the promotion of visual computing theory, 3D reconstruction has made a breakthrough. Using image processing technology to obtain depth information for real-time recognition of 3D images and motion capture makes it possible for people to interact with terminals in natural ways such as expressions, gestures, and somatosensory actions. [0003] Nowadays, with the rapid development of mobile devices, both hardware and software have made a qualitative leap, which also m...

AI Technical Summary

Problems solved by technology

In the prior art, mobile phones generally have one camera, or two front and rear cameras, but when taking pictures, only one camera can be turned on to take pictures. Under this condition, the photos taken can only be flat , and the output image is also flat, and it is not possible to take stereoscopic photos directly, but the method of generating stereoscopic photos is to take multi-angle shots from different angles of view of the object, and then manually integrate and process multiple groups of photos through imaging software , which not only wastes time, but also increases the cost of imaging

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