Created
September 26, 2013 16:49
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| __author__ = 'rom1dep' | |
| import cv2 | |
| from cv2 import imread, imshow, waitKey | |
| import numpy as np | |
| img = imread("piano.jpg") | |
| (h, w, _) = img.shape | |
| roi = img[160:180, :] | |
| imshow("roi", roi) | |
| _, th = cv2.threshold(cv2.cvtColor(roi, cv2.COLOR_BGR2GRAY), 128, 256, cv2.THRESH_BINARY) | |
| imshow("bw", th) | |
| chunks = [th[:, w * i / 18:w * (i + 1) / 18] for i in xrange(0, 18)] | |
| for i, chunk in enumerate(chunks): | |
| print str(i) + "-" + str(np.sum(chunk) > 242 * 255) ##242=plus de la moitie du chunk en blanc | |
| waitKey(0) |
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http://us.123rf.com/400wm/400/400/kateleigh/kateleigh0805/kateleigh080500003/3011694-un-marteau-frappant-une-note-de-piano.jpg
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