AUTOMATIC CALIBRATION AND CO-REGISTRATION FOR A STEREO CAMERA SYSTEM AND A THERMAL IMAGING SENSOR USING A CHESSBOARD

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences

Choinowski, A.^1¹ 

[1] Institute of Optical Sensor Systems, German Aerospace Center, 12489 Berlin, Germany^1

关键词: Thermal;    VIS;    Chessboard;    Co-Registration;    Realtime;    System calibration;   

DOI  :  10.5194/isprs-archives-XLII-2-W13-1631-2019

学科分类：地球科学(综合)

来源: Copernicus Publications

【 摘 要 】

This paper presents a system calibration method for a trifocal sensor, which is sensitive to different spectral bands. The trifocal camera system consists of a stereo camera, operating in the visual (VIS) spectrum and a thermal imaging camera, operating in the Long-Wave- Infrared (LWIR) spectrum. Intrinsic parameters and spatial alignment are determined simultaneously. As calibration target a passive aluminium chessboard is used. Corner detection and subsequent bundle adjustment is done on all synchronized image triplets. The remaining reprojection errors are in the sub-pixel range and enable the system to generate metric point clouds, colored with thermal intensities in real-time.

【 授权许可】

CC BY