From 9c7cb38c8b17ea0f839528cd9ec7407b168ce8c9 Mon Sep 17 00:00:00 2001
From: Tiago Freitas Pereira <tiagofrepereira@gmail.com>
Date: Tue, 26 Jan 2021 17:42:48 +0100
Subject: [PATCH] Clipped the Sphereface angle
---
bob/learn/tensorflow/layers.py | 1 +
1 file changed, 1 insertion(+)
diff --git a/bob/learn/tensorflow/layers.py b/bob/learn/tensorflow/layers.py
index 6c2f4c06..ba63ca95 100644
--- a/bob/learn/tensorflow/layers.py
+++ b/bob/learn/tensorflow/layers.py
@@ -201,6 +201,7 @@ class SphereFaceLayer(tf.keras.layers.Layer):
# cos between X and W
cos_yi = tf.matmul(X, W)
+ cos_yi = tf.clip_by_value(cos_yi, -1, 1)
# cos(m \theta)
theta = tf.math.acos(cos_yi)
--
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