国際会議ICEM15（ポルトガル）にて光源切替位相シフト法に関する基調講演HIGH-SPEED, HIGH-ACCURACY AND LOW COST SHAPE MEASUREMENT SYSTEM USING PHASE ANALYSIS OF GRATING PROJECTED BY MULTI LINE LED LIGHT SOURCES、15th International Conference on Experimental Mechanics, University of Porto, 22-27 July 2012