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