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def xyxy_to_xywh(xyxy):
"""" Calculates the relative bounding box from absolute pixel values. """
bbox_left = min([xyxy[0], xyxy[2]])
bbox_top = min([xyxy[1], xyxy[3]])
bbox_w = abs(xyxy[0] - xyxy[2])
bbox_h = abs(xyxy[1] - xyxy[3])
x_c = (bbox_left + bbox_w / 2)
y_c = (bbox_top + bbox_h / 2)
w = bbox_w
h = bbox_h
return [x_c, y_c, w, h]
def tlwh_to_xyxy(tlwh):
"""" Convert tlwh to xyxy """
x1 = tlwh[0]
y1 = tlwh[1]
x2 = tlwh[2] + x1
y2 = tlwh[3] + y1
return [x1, y1, x2, y2]
def xyxy_to_tlwh(bbox_xyxy):
tlwh_bboxs = []
for i, box in enumerate(bbox_xyxy):
x1, y1, x2, y2 = [int(i) for i in box]
top = x1
left = y1
w = int(x2 - x1)
h = int(y2 - y1)
tlwh_obj = [top, left, w, h]
tlwh_bboxs.append(tlwh_obj)
return tlwh_bboxs
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