this s the code for log transform of the image

经过编译验证的VC++ gdi图形编程的例子，能画曲线图，柱状图，饼图，还能变换坐标到log空间非常适合通信行业的应用。-After verification of the compiled graphical programming VC++ gdi example, can draw graphs, bar charts, pie charts, can transform the coordinates into the log space is ideal for the applica