Abstract
We have developed a digital photogrammetry system, which enables us to make all-around 3D measurement using the object pictures obtained through the integrated works of digital cameras, projectors and our specific PC software. The system consists of units, each of which is again consists of two synchronized digital cameras and projectors with PC program.The measuring process is now simplified by making all the operations of orientation and measurement analysis automatic; and this, with a single push of a button. Automation of orientation was realized by creating a calibration box covered by color-coded targets, which enables us to make exterior orientation parameters of the cameras automatically.For stereo-matching, in order to minimize the mismatching, we invented Coarse-to Fine Strategy Method by integrating OCM (Orientation Code Matching) or robust matching with LSM (Least Square Matching). Therefore, improving the accuracy of the initial values of OCM, using LSM for fine measurement and making the involved operations automatic, we enhanced the quality of surface measurement and succeeded to shorten the measuring time considerably.In this paper we are presenting the report on our system of human body measurement and its processing method of stereo-matching, as well as on the result of comparing assessment of each matching method.
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