reorganize image class.

src/TensorFlowNET.Core/APIs/tf.image.cs

@@ -0,0 +1,47 @@
+/*****************************************************************************
+   Copyright 2018 The TensorFlow.NET Authors. All Rights Reserved.
+
+   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.
+******************************************************************************/
+
+using System.Collections.Generic;
+using Tensorflow.IO;
+
+namespace Tensorflow
+{
+    public partial class tensorflow
+    {
+        public image_internal image = new image_internal();
+
+        public class image_internal
+        {
+            public Tensor decode_jpeg(Tensor contents,
+                        int channels = 0,
+                        int ratio = 1,
+                        bool fancy_upscaling = true,
+                        bool try_recover_truncated = false,
+                        float acceptable_fraction = 1,
+                        string dct_method = "",
+                        string name = null)
+                => gen_image_ops.decode_jpeg(contents, channels: channels, ratio: ratio,
+                    fancy_upscaling: fancy_upscaling, try_recover_truncated: try_recover_truncated, 
+                    acceptable_fraction: acceptable_fraction, dct_method: dct_method);
+
+            public Tensor resize_bilinear(Tensor images, Tensor size, bool align_corners = false, string name = null)
+                => gen_image_ops.resize_bilinear(images, size, align_corners: align_corners, name: name);
+
+            public Tensor convert_image_dtype(Tensor image, TF_DataType dtype, bool saturate = false, string name = null)
+                => gen_image_ops.convert_image_dtype(image, dtype, saturate: saturate, name: name);
+        }
+    }
+}

src/TensorFlowNET.Core/APIs/tf.io.cs

@@ -24,8 +24,6 @@ namespace Tensorflow
         public GFile gfile = new GFile();
         public Tensor read_file(string filename, string name = null) => gen_io_ops.read_file(filename, name);
 
-        public gen_image_ops image => new gen_image_ops();
-
         public void import_graph_def(GraphDef graph_def,
             Dictionary<string, Tensor> input_map = null,
             string[] return_elements = null,

src/TensorFlowNET.Core/Operations/gen_image_ops.py.cs

@@ -23,7 +23,7 @@ namespace Tensorflow
     {
         public static OpDefLibrary _op_def_lib = new OpDefLibrary();
 
-        public Tensor convert_image_dtype(Tensor image, TF_DataType dtype, bool saturate = false, string name= null)
+        public static Tensor convert_image_dtype(Tensor image, TF_DataType dtype, bool saturate = false, string name= null)
         {
             if (dtype == image.dtype)
                 return array_ops.identity(image, name: name);
@@ -57,7 +57,7 @@ namespace Tensorflow
             });
         }
 
-        public Tensor decode_jpeg(Tensor contents,
+        public static Tensor decode_jpeg(Tensor contents,
             int channels = 0,
             int ratio = 1,
             bool fancy_upscaling = true,
@@ -88,7 +88,7 @@ namespace Tensorflow
             }
         }
 
-        public Tensor resize_bilinear(Tensor images, Tensor size, bool align_corners = false, string name = null)
+        public static Tensor resize_bilinear(Tensor images, Tensor size, bool align_corners = false, string name = null)
         {
             if (tf.context.executing_eagerly())
             {

src/TensorFlowNET.Core/Operations/image_ops_impl.cs

@@ -0,0 +1,27 @@
+/*****************************************************************************
+   Copyright 2018 The TensorFlow.NET Authors. All Rights Reserved.
+
+   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.
+******************************************************************************/
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Tensorflow
+{
+    public class image_ops_impl
+    {
+
+    }
+}