Created
June 22, 2020 11:57
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| import matplotlib.pyplot as plt | |
| import cv2 | |
| img = cv2.imread('/path/') | |
| split_img = cv2.split(img) # Splitting channel | |
| histSize = 256 | |
| histRange = (0, 256) # the upper boundary is exclusive | |
| accumulate = False | |
| histr1 = cv2.calcHist(split_img, [0], None, [histSize], histRange, accumulate=accumulate) | |
| histr2 = cv2.calcHist(split_img, [1], None, [histSize], histRange, accumulate=accumulate) | |
| histr3 = cv2.calcHist(split_img, [2], None, [histSize], histRange, accumulate=accumulate) | |
| fig, ax = plt.subplots() | |
| ax.plot(histr1, color='cyan', label='Color 1') | |
| ax.plot(histr2, color='red', label='Color 2') | |
| ax.plot(histr3, color='blue', label='Colo 3') | |
| ax.legend() | |
| plt.show() |
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