Created
December 14, 2009 12:20
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def borders(filename, threshold = 0.5): | |
try: | |
im = Image.open(filename) | |
im = im.convert("RGB") | |
pix = im.load() | |
x = int(im.size[0]) | |
y = int(im.size[1]) | |
pixels = [] | |
for i in range(x): | |
pixels.append('#%02x%02x%02x' % pix[i, 0]) | |
pixels.append('#%02x%02x%02x' % pix[i, y-1]) | |
pixels.append('#%02x%02x%02x' % pix[i, 1]) | |
pixels.append('#%02x%02x%02x' % pix[i, y-2]) | |
for i in range(y): | |
pixels.append('#%02x%02x%02x' % pix[0, i]) | |
pixels.append('#%02x%02x%02x' % pix[x-1, i]) | |
pixels.append('#%02x%02x%02x' % pix[1, i]) | |
pixels.append('#%02x%02x%02x' % pix[x-2, i]) | |
total_pixels = len(pixels) | |
histogram = {} | |
for i in pixels: | |
if i not in histogram: | |
histogram[i] = 1 | |
else: | |
histogram[i] += 1 | |
for colour, count in histogram.iteritems(): | |
if count / float(total_pixels) > threshold: | |
return colour | |
except Exception: | |
pass | |
return '#ffffff' |
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