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find_contours() may return multiple masks #48

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find_contours() may return multiple masks #48

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1 change: 1 addition & 0 deletions pycococreatortools/pycococreatortools.py
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@ def binary_mask_to_polygon(binary_mask, tolerance=0):
# pad mask to close contours of shapes which start and end at an edge
padded_binary_mask = np.pad(binary_mask, pad_width=1, mode='constant', constant_values=0)
contours = measure.find_contours(padded_binary_mask, 0.5)
contours=sorted(contours,key=lambda x: len(x),reverse=True)[0:1]#find_contours() may return multiple masks
contours = np.subtract(contours, 1)
for contour in contours:
contour = close_contour(contour)
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