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Correct box format in documentation for batch_iou.

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Alex Bewley 2020-10-25 19:20:42 +01:00
parent 7fc1ce2855
commit 3f548c04e7
1 changed files with 14 additions and 14 deletions
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28
sort.py
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@ -44,20 +44,20 @@ def linear_assignment(cost_matrix):
return np.array(list(zip(x, y))) return np.array(list(zip(x, y)))
def iou_batch(bb_test, bb_gt): def iou_batch(bb_test, bb_gt):
""" """
From SORT: Computes IUO between two bboxes in the form [l,t,w,h] From SORT: Computes IUO between two bboxes in the form [x1,y1,x2,y2]
""" """
bb_gt = np.expand_dims(bb_gt, 0) bb_gt = np.expand_dims(bb_gt, 0)
bb_test = np.expand_dims(bb_test, 1) bb_test = np.expand_dims(bb_test, 1)
xx1 = np.maximum(bb_test[..., 0], bb_gt[..., 0]) xx1 = np.maximum(bb_test[..., 0], bb_gt[..., 0])
yy1 = np.maximum(bb_test[..., 1], bb_gt[..., 1]) yy1 = np.maximum(bb_test[..., 1], bb_gt[..., 1])
xx2 = np.minimum(bb_test[..., 2], bb_gt[..., 2]) xx2 = np.minimum(bb_test[..., 2], bb_gt[..., 2])
yy2 = np.minimum(bb_test[..., 3], bb_gt[..., 3]) yy2 = np.minimum(bb_test[..., 3], bb_gt[..., 3])
w = np.maximum(0., xx2 - xx1) w = np.maximum(0., xx2 - xx1)
h = np.maximum(0., yy2 - yy1) h = np.maximum(0., yy2 - yy1)
wh = w * h wh = w * h
o = wh / ((bb_test[..., 2] - bb_test[..., 0]) * (bb_test[..., 3] - bb_test[..., 1]) o = wh / ((bb_test[..., 2] - bb_test[..., 0]) * (bb_test[..., 3] - bb_test[..., 1])
+ (bb_gt[..., 2] - bb_gt[..., 0]) * (bb_gt[..., 3] - bb_gt[..., 1]) - wh) + (bb_gt[..., 2] - bb_gt[..., 0]) * (bb_gt[..., 3] - bb_gt[..., 1]) - wh)
return(o) return(o)