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+--- Thread: grayscale image processing (/thread-5849.html)
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RE: grayscale image processing - heiner55 - Oct-26-2017
You still have to find the maximum yourself.
As Mekire already said: This solution is slow.
from PIL import Image
img = Image.open('grey.jpg')
for row in range(img.height):
counter = 0
for col in range(img.width):
pixel = img.getpixel((col,row))
red = pixel[0]; green = pixel[1]; blue = pixel[2]
grey = (red + green + blue) // 3
if grey > 200:
counter += 1
if counter != 0:
print("row %d: %d" % (row, counter))