Image.blue

Image.blue() → Image

Extract the blue plane of a color image

Raises:

ValueError – if image is not color

Return out:

greyscale image representing the blue image plane

Return type:

Image

Example:

>>> from machinevisiontoolbox import Image
>>> img = Image.Read("flowers4.png")
>>> blue = img.blue() # blue plane
>>> blue.disp()
<matplotlib.image.AxesImage object at 0x7f076e7e02f0>
>>> blue
Image(size=(640, 426), dtype=uint8)
>>> blue.iscolor
False

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

Seealso:

plane red green