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pythonscikit-image

Mistake in the code. Scikit-image, Spyder

I got this warning but I cannot fix it. Code works.

Warning: Lossy conversion from float64 to uint8. Range [0, 1]. Convert image to uint8 prior to saving to suppress this warning.

from skimage.io import imread, imshow, imsave 

img_grey = imread('C:/Lawn.png', as_gray=True)
imsave('Lawn22.png', img_grey)

img = imread('C:/Lawn.png')
imshow(img)
Solution

  • You need after reading image convert float64 to type uint8 like below for removing this warning message with this code:

    img_grey = img_grey / img_grey.max() #normalizes img_grey in range 0 - 255
img_grey = 255 * img_grey
img_grey = img_grey.astype(np.uint8)

    whole code without warning message:

    from skimage.io import imread, imshow, imsave 
img_grey = imread('C:/Lawn.png', as_gray=True)

# convert image to uint8
img_grey = img_grey / img_grey.max() #normalizes img_grey in range 0 - 255
img_grey = 255 * img_grey
img_grey = img_grey.astype(np.uint8)


imsave('Lawn22.png', img_grey)
img = imread('C:/Lawn.png')
imshow(img_grey)