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car-detection-bayes
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updates

This commit is contained in:
Glenn Jocher 2019-11-29 18:20:57 -08:00
parent 51d666a81a
commit 77012f8f97
1 changed files with 4 additions and 2 deletions
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6
utils/utils.py
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@ -272,9 +272,11 @@ def bbox_iou(box1, box2, x1y1x2y2=True, GIoU=False, DIoU=False, CIoU=False):
rho2 = ((b2_x1 + b2_x2) - (b1_x1 + b1_x2)) ** 2 / 4 + ((b2_y1 + b2_y2) - (b1_y1 + b1_y2)) ** 2 / 4
if DIoU:
return iou - rho2 / c2 # DIoU
elif CIoU:
elif CIoU: # https://github.com/Zzh-tju/DIoU-SSD-pytorch/blob/master/utils/box/box_utils.py#L47
v = (4 / math.pi ** 2) * torch.pow(torch.atan(w2 / h2) - torch.atan(w1 / h1), 2)
return iou - (rho2 / c2 + v ** 2 / (1 - iou + v)) # CIoU
with torch.no_grad():
alpha = v / (1 - iou + v)
return iou - (rho2 / c2 + v * alpha) # CIoU
return iou