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jh 2021-03-12 18:09:51 -08:00
commit ce5f479f9f
1 changed files with 3 additions and 4 deletions
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core/leras/layers/MsSsim.py
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@ -17,10 +17,9 @@ class MsSsim(nn.LayerBase):
def __call__(self, y_true, y_pred, max_val):
# Transpose images from NCHW to NHWC
y_true_t = tf.transpose(y_true, [0, 2, 3, 1])
y_pred_t = tf.transpose(y_pred, [0, 2, 3, 1])
with tf.device('/CPU:0'):
loss = tf.image.ssim_multiscale(y_true_t, y_pred_t, max_val, power_factors=self.power_factors)
y_true_t = tf.transpose(tf.cast(y_true), [0, 2, 3, 1])
y_pred_t = tf.transpose(tf.cast(y_pred), [0, 2, 3, 1])
loss = tf.image.ssim_multiscale(y_true_t, y_pred_t, max_val, power_factors=self.power_factors)
return (1.0 - loss) / 2.0
nn.MsSsim = MsSsim