67 lines
1.8 KiB
Python
67 lines
1.8 KiB
Python
def pdf_rect(rect, container_height):
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x1 = min(rect[0], rect[2])
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y1 = max(rect[1], rect[3])
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x2 = max(rect[0], rect[2])
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y2 = min(rect[1], rect[3])
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# and convert from pdf to image coords
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return Rect(x1, container_height - y1, x2, container_height - y2)
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def cv2_rect(l, t, w, h):
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return Rect(l, t, l + w, t + h)
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def overlaps(r1, r2, threshold):
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A = r1.to_dict()
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B = r2.to_dict()
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# https://stackoverflow.com/questions/9324339/how-much-do-two-rectangles-overlap
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SA = A['w'] * A['h']
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SB = B['w'] * B['h']
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SI = max([0, 1 + min([A['x2'], B['x2']]) - max([A['x1'], B['x1']])]) * max([0, 1 + min([A['y2'], B['y2']]) - max([A['y1'], B['y1']])])
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SU = SA + SB - SI
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overlap = float(SI) / float(SU)
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print('overlap: {}'.format(int(overlap * 100)))
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return overlap > threshold
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class Rect(object):
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def __init__(self, l, t, r, b):
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self.left = l
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self.top = t
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self.right = r
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self.bottom = b
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def translate(self, x, y):
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self.left += x
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self.top += y
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self.right += x
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self.bottom += y
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return self
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def scale(self, x, y):
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self.left *= x
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self.top *= y
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self.right *= x
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self.bottom *= y
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return self
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def p1(self, page_height):
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return (self.left, self.top)
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def p2(self, page_height):
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return (self.right, self.bottom)
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def to_dict(self):
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return {'x1': self.left,
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'y1': self.top,
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'x2': self.right,
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'y2': self.bottom,
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'w': self.right - self.left,
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'h': self.bottom - self.top }
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def __repr__(self):
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return 'Rect[l={}, t={}, r={}, b={}]'.format(int(self.left), int(self.top), int(self.right), int(self.bottom))
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