Device and method for quickly calibrating a variety of parameters of TOF depth camera

Abstract

A device and a method for quickly calibrating a variety of parameters of a TOF (Time of Flight) depth camera are disclosed. The device comprises a calibration kit which is composed of a box body, a camera holder used for placing a TOF depth camera, an optical fiber calibration target, and a white calibration target. The optical fiber calibration target is provided with multiple light diffusion plates in uniform distribution. Each light diffusion plate is connected with a light guide fiber, and is used for calibrating the pixel offset of the TOF depth camera and calibrating error caused by integral time. The white calibration target is arranged between the camera holder and the optical fiber calibration target. The position of the camera holder relative to the white calibration target is fixed, and the position of the camera holder relative to the optical fiber calibration target is fixed. The calibration kit integrates planar markers used in camera internal parameter calibration and tools used in TOF depth camera calibration. Thus, a variety of parameters of the TOF depth camera can be calibrated quickly and effectively.

Description

technical field [0001] The invention relates to an optical instrument for photogrammetry, in particular to a device for quickly calibrating multiple parameters of a TOF depth camera and a calibrating method thereof. Background technique [0002] With the development of optical measurement and computer vision, optical three-dimensional measurement technology has gradually matured, and has gradually appeared in the fields of gesture control, 3D (Three-Dimension three-dimensional) modeling, automotive radar and robot vision systems, and has become the current field of optical measurement. Hotspots in . Among them, the direction of the camera module is moving towards the realization of new application fields such as 3D imaging, ranging, and somatosensory interaction. A variety of new features are overwhelming, the most striking of which is the birth of the 3D camera. [0003] In camera calibration technology, the calibration of TOF depth camera parameters is a very important a...

AI Technical Summary

Problems solved by technology

2. Errors caused by changes in incident light intensity

3. Errors due to different integration times

[0009] From the above content, it can be seen that the calibration steps of TOF depth cameras are cumbersome, and the calibration process is time-consuming and laborious, which limits the application and development of TOF depth cameras in the consumer market

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