Introduction - If you have any usage issues, please Google them yourself
(1) is sandwiched a pair of color image read a file the D drive,
(2) to convert it to grayscale
(3) to find the maximum point in the gray grayscale image
(4) The gray scale image saved to a folder on the E drive in
(5) The maximum value of the gray dot gray scale values are displayed, and to keep the gray value to txt file another document E disk folder.