% convert .mp4 to jpg picture t='C:\Documents and Settings\luokh\桌面\Matlab編程\Matlab編程\數據資料\finger.mp4'; obj = VideoReader(t); for i=1:20 frame = read(obj,i); temp=strcat('C:\Documents and Settings\luokh\桌面\Matlab編程\Matlab編程\數據資料\fingerOUT\',num2str(i),'.','jpg'); imwrite(frame,temp); end clear all %end