Add DepthwiseConv2d to subclassed model and efficient-net test cases (#394)

* Efficient-net test cases.

* Add DepthwiseConv2d to subclassed model.

* disable efficient net test cases.

Author: wenbingl

.azure-pipelines/linux-CI-keras-applications-nightly.yml

@@ -105,6 +105,7 @@ jobs:
       pip install git+https://www.github.com/keras-team/keras-contrib.git
       pip install keras-tcn==2.8.3
       $(UNINSTALL_KERAS)
+      pip install git+https://github.com/qubvel/efficientnet
     displayName: 'Install dependencies'
 
   - script: |

.azure-pipelines/win32-CI-keras-applications-nightly.yml

@@ -103,6 +103,7 @@ jobs:
       pip install git+https://www.github.com/keras-team/keras-contrib.git
       pip install keras-tcn==2.8.3
       %UNINSTALL_KERAS%
+      pip install git+https://github.com/qubvel/efficientnet
     displayName: 'Install dependencies'
 
   - script: |

applications/nightly_build/test_efn.py

@@ -0,0 +1,46 @@
+###############################################################################
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See License.txt in the project root for
+# license information.
+###############################################################################
+import os
+import sys
+import unittest
+from os.path import dirname, abspath
+from keras2onnx.proto import keras, is_keras_older_than
+
+sys.path.insert(0, os.path.join(dirname(abspath(__file__)), '../../tests/'))
+from test_utils import run_image
+
+img_path = os.path.join(os.path.dirname(__file__), '../data', 'street.jpg')
+
+
+# @unittest.skipIf(is_keras_older_than('2.2.0'), "efficientnet needs keras >= 2.2.0")
+@unittest.skip("Minor discrepancy on the model output.")
+class TestEfn(unittest.TestCase):
+
+    def setUp(self):
+        self.model_files = []
+
+    def tearDown(self):
+        for fl in self.model_files:
+            os.remove(fl)
+
+    def test_custom(self):
+        from efficientnet import keras as efn
+        keras.backend.set_learning_phase(0)
+        base_model = efn.EfficientNetB0(input_shape=(600, 600, 3), weights=None)
+        backbone = keras.Model(base_model.input, base_model.get_layer("top_activation").output)
+        res = run_image(backbone, self.model_files, img_path, target_size=(600, 600), rtol=1e-1)
+        self.assertTrue(*res)
+
+    def test_efn(self):
+        from efficientnet import keras as efn
+        keras.backend.set_learning_phase(0)
+        model = efn.EfficientNetB7(weights='imagenet')
+        res = run_image(model, self.model_files, img_path, target_size=(600, 600), rtol=1e-1)
+        self.assertTrue(*res)
+
+
+if __name__ == "__main__":
+    unittest.main()

applications/nightly_build/test_gan.py

@@ -7,7 +7,6 @@
 import sys
 import unittest
 import keras2onnx
-import onnx
 import numpy as np
 from keras2onnx.proto import keras
 from os.path import dirname, abspath

keras2onnx/_parse_tf.py

@@ -186,7 +186,10 @@ def build_layer_outputs(model, graph, outputs):
                     output_dict[op_.name] = layer_dict[ln_]
                 else:
                     # fx_[1] is output node redirect function.
-                    output_dict[fx_list[1](lobj, op_)] = layer_dict[ln_]
+                    output_tensor = fx_list[1](lobj, op_)
+                    assert graph.get_operation_by_name(output_tensor) is not None, "Parsing layer({}) failed.".format(
+                        lobj)
+                    output_dict[output_tensor] = layer_dict[ln_]
 
     return output_dict
 

keras2onnx/ke2onnx/layer_spec.py

@@ -27,6 +27,10 @@ def _simple_layer_name_extractor(fstr_list, node_name):
 
 
 def _conv_layer_spec_outputs(layer, node):
+    if type(layer) == _layer.DepthwiseConv2D:
+        ri = node.name.rindex('/')
+        return node.name[:ri + 1] + 'BiasAdd'
+
     activation_map = {
         keras.activations.linear: '',
         tf.nn.sigmoid: 'Sigmoid',
@@ -58,6 +62,7 @@ def _relu_like_spec_outputs(layer, node):
     _layer.AveragePooling2D: (["{}/AvgPool"], [_default_layer_name_extractor]),
     _layer.AveragePooling3D: (["{}/AvgPool"], [_default_layer_name_extractor]),
     _layer.Conv2DTranspose: (["{}/conv2d_transpose"], [_simple_layer_name_extractor, _conv_layer_spec_outputs]),
+    _layer.DepthwiseConv2D: (["{}/depthwise"], [_simple_layer_name_extractor, _conv_layer_spec_outputs]),
     _layer.LeakyReLU: (["{}/LeakyRelu"], [_default_layer_name_extractor]),
     _adv_activations.PReLU: (["{}/Relu"], [_simple_layer_name_extractor, _relu_like_spec_outputs])
 }