modify normalization of db_process to speed up
@@ -194,8 +194,12 @@ class DBProcessTest(object):
img_std = [0.229, 0.224, 0.225]
im = im.astype(np.float32, copy=False)
im = im / 255
- im -= img_mean
- im /= img_std
+ im[:, :, 0] -= img_mean[0]
+ im[:, :, 1] -= img_mean[1]
+ im[:, :, 2] -= img_mean[2]
+ im[:, :, 0] /= img_std[0]
+ im[:, :, 1] /= img_std[1]
+ im[:, :, 2] /= img_std[2]
channel_swap = (2, 0, 1)
im = im.transpose(channel_swap)
return im
