imread

Mat imread(const String& filename, int flags=IMREAD_COLOR)

• CV_LOAD_IMAGE_ANYDEPTH - If set, return 16-bit/32-bit image when the input has the corresponding depth, otherwise convert it to 8-bit.
• CV_LOAD_IMAGE_COLOR - If set, always convert image to the color one
• CV_LOAD_IMAGE_GRAYSCALE - If set, always convert image to the grayscale one
• CV_LOAD_IMAGE_ANYCOLOR - 原图加载