python opencv cv2.cvtColor()方法(将图像从一种颜色空间转换为另一种颜色空间)
defcvtColor(src,code,dst=None,dstCn=None):#realsignatureunknown;restoredfrom__doc__"""cvtColor(src,code[,dst[,dstCn]])->dst.@briefConvertsanimagefromonecolorspacetoanother.将图像从一种颜色空间转换为另一种颜色空间。..Thefu