Design method of camera with no interference depth based on structured light

Abstract

The invention discloses a design method of a camera with no interference depth based on structured light, which belongs to image processing technology field. The design method comprises the steps of grouping, synchronizing and calibrating the cameras in a system; obtaining a speckle image in a target scene synchronously by the cameras; calibrating the speckle image obtained by the cameras and calculating a parallax to obtain a parallax graph; and converting the parallax graph into a depth graph. According to the invention, the depth information of the target scene can be extracted normally; the number and position of the cameras are not limited and the result won't be influenced by the number of the depth cameras; the cameras can be applied in multiple application scenes; good expansion property is provided; other cameras won't be influenced when the number of the depth camera in the system is changed and good adaptability is provided; no communication among the depth cameras is needed; and system cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a design method of an interference-free depth camera based on structured light. Background technique [0002] With the advent of Kinect, Kinect has provided a cheap real-time scene depth image extraction method, and more and more people have begun to pay attention to the fields of 3D construction and depth generation. Depth maps can not only be used to reconstruct 3D scenes, but also can be used in various fields such as image segmentation and pattern recognition, and have a wide range of application prospects. [0003] However, the Achilles' heel of the Kinect depth sensor is: there is mutual interference between multiple Kinects. This is also a very fatal problem faced by most structured light cameras currently in use. This makes it impossible to use multiple Kinect-like depth cameras in the same scene for depth acquisition. Even if multiple Kinects are p...

AI Technical Summary

Problems solved by technology

Since there is a rigid structure between the projection module and the camera of each Kinect, but there is no such rigid structure between Kinects, this leads to the fact that each Kinect can only clearly receive the speckle projected by itself when the Kinects move with each other template, while speckle templates from other Kinects are blurred due to relative motion, which is equivalent to weakening the brightness of the remaining projection templates

Although using this method can solve the interference problem between Kinects very well, it introduces mutual motion between cameras, and the shooting position of each depth map is constantly changing. Figure is undoubtedly a challenge for 3D reconstruction

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