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car-detection-bayes
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updates

This commit is contained in:
Glenn Jocher 2019-11-30 18:19:17 -08:00
parent 34155887bc
commit 8be4b41b3d
1 changed files with 10 additions and 4 deletions
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12
utils/utils.py
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@ -124,11 +124,17 @@ def xywh2xyxy(x):
return y
def scale_coords(img1_shape, coords, img0_shape):
def scale_coords(img1_shape, coords, img0_shape, ratio_pad=None):
# Rescale coords (xyxy) from img1_shape to img0_shape
if ratio_pad is None: # not supplied, calculate
gain = max(img1_shape) / max(img0_shape) # gain = old / new
coords[:, [0, 2]] -= (img1_shape[1] - img0_shape[1] * gain) / 2 # x padding
coords[:, [1, 3]] -= (img1_shape[0] - img0_shape[0] * gain) / 2 # y padding
pad = (img1_shape[1] - img0_shape[1] * gain) / 2, (img1_shape[0] - img0_shape[0] * gain) / 2 # wh padding
else:
gain = ratio_pad[0][0]
pad = ratio_pad[1]
coords[:, [0, 2]] -= pad[0] # x padding
coords[:, [1, 3]] -= pad[1] # y padding
coords[:, :4] /= gain
clip_coords(coords, img0_shape)
return coords