Industrial Field Visual Inspection Technique Based on Digital Close Range Photogrammetry

This paper studies an on-field 3D precise visual measurement technique based on digital close range photogrammetry. The key concerned content: model and calibration of the digital imaging device, high preecise image processing algorithm, optical coding and precise optical probe are discussed in details, and the implement idea is also presented, these can provide design reference for industry on-field close range photogrammetry 3D precise measurement system.