1 files changed, 34 insertions, 0 deletions
diff --git a/model-optimizer/extensions/front/onnx/neg_ext.py b/model-optimizer/extensions/front/onnx/neg_ext.py
new file mode 100644
index 000000000..939c16752
--- /dev/null
+++ b/model-optimizer/extensions/front/onnx/neg_ext.py
@@ -0,0 +1,34 @@
+"""
+ Copyright (c) 2018 Intel Corporation
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+"""
+
+import numpy as np
+
+from mo.front.extractor import FrontExtractorOp
+from mo.front.onnx.extractors.utils import onnx_attr
+
+
+class NegFrontExtractor(FrontExtractorOp):
+    # Neg operation will be transformed to ImageScalar and further will be converted to Mul
+    op = 'Neg'
+    enabled = True
+
+    @staticmethod
+    def extract(node):
+        node['scale'] = np.array(-1, dtype=np.int64)
+        node['bias'] = np.array(0, dtype=np.int64)
+        node['op'] = 'ImageScaler'
+
+        return __class__.enabled