Imaging Colorimetry Using a Digital Camera

摘要: In this work, we investigate the use of a digital camera for colorimetry. Our system consists measurement device and corresponding calibration mapping. The goal is to design that will accurately assess color sample. We develop two colorimetry systems by applying model-based regression-based techniques. For both systems, formed set filters. term multi-exposure refers multiple snapshots taken along with mapping which matrices then takes these filtered RGB outputs, re- turns CIE XYZ tristimulus values under several pre-selected illumination conditions. system, model employed; our objective find optimal filters sets minimize cost function accounts errors in L*a*b* space, robustness, filter smoothness. no modeling technique applied device. simply opti- mal total least squared given coordinates apply types specific tasks: general purpose measure- ment samples human teeth. present experimental results applications. Finally, order measure parameters evaluate their performance, had special instrumentation. briefly describe effort as well.