文章目录
cv2.imread(filename, flag)s
- cv2.imread(filename, flag)
flag控制读入图片的格式
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
0 Return a 3-channel color image.
In the current implementation the alpha channel, if any, is stripped from the output image. Use negative value if you need the alpha channel.
=0 Return a grayscale image.
<0 Return the loaded image as is (with alpha channel) - cv2.imwrite()
- cv2.finHomogrphy()
- cv2.resize()
- cv2.polylines()
- cv2.getRotationMatrix2D()
- cv2.warpAffine()