Image.red

Image.red() → Image

Extract the red plane of a color image

Raises:

ValueError – if image is not color

Return out:

greyscale image representing the red image plane

Return type:

Image

Example:

>>> from machinevisiontoolbox import Image
>>> img = Image.Read("flowers4.png")
>>> red = img.red() # red plane
>>> red.disp()
<matplotlib.image.AxesImage object at 0x7f076d99d7f0>
>>> red
Image(size=(640, 426), dtype=uint8)
>>> red.iscolor
False

(Source code, png, hires.png, pdf)

Seealso:

plane green blue