+def stone_color(image, (x, y)):
+ suma = 0.
+ for i in range(-2, 3):
+ for j in range(-2, 3):
+ try:
+ suma += sum(image.getpixel((x + i, y + j)))
+ except IndexError:
+ pass
+ suma /= 3 * 25
+ if suma < 55:
+ return 'B'
+ elif suma < 200:
+ return '.'
+ else:
+ return 'W'
+
+class imsave():
+ def __init__(self, saving_dir):
+ self.saving_dir = saving_dir
+ self.saving_num = 0
+
+ def save(self, image, title=''):
+ filename = self.saving_dir + "{0:0>2}".format(self.saving_num) + '.jpg'
+ if not os.path.isdir(self.saving_dir):
+ os.makedirs(self.saving_dir)
+ image.save(filename, 'JPEG')
+ self.saving_num += 1
+
+def combine(image1, image2):
+ im_l1 = image1.load()
+ im_l2 = image2.load()
+
+ on_both = []
+
+ for x in xrange(image1.size[0]):
+ for y in xrange(image1.size[1]):
+ if im_l1[x, y] and im_l2[x, y]:
+ on_both.append((x, y))
+ return on_both
+
+def intersections_from_angl_dist(lines, size):
+ intersections = []
+ for (angl1, dist1) in sorted(lines[1], key=itemgetter(1)):
+ line = []
+ for (angl2, dist2) in sorted(lines[0], key=itemgetter(1)):
+ if abs(angl1 - angl2) > 0.4:
+ x = - ((dist2 / math.cos(angl2))-(dist1 / math.cos(angl1))) / (math.tan(angl1) - math.tan(angl2))
+ y = (math.tan(angl1) * x) - (dist1 / math.cos(angl1))
+ if (-size[0] / 2 < x < size[0] / 2 and
+ -size[1] / 2 < y < size[1] / 2):
+ line.append((int(x + size[0] / 2), int(y + size[1] / 2)))
+ intersections.append(line)
+ return intersections
+