rollback object detection example.

.gitignore

@@ -62,7 +62,6 @@ StyleCopReport.xml
 *_p.c
 *_i.h
 *.ilk
-*.meta
 *.obj
 *.iobj
 *.pch

README.md

@@ -1,5 +1,4 @@
 # TensorFlow.NET
-TensorFlow.NET provides a .NET Standard binding for [TensorFlow](https://www.tensorflow.org/). It aims to implement the complete Tensorflow API in CSharp which allows .NET developers to develop, train and deploy Machine Learning models with the cross-platform .NET Standard framework. 
 TensorFlow.NET (TF.NET) provides a .NET Standard binding for [TensorFlow](https://www.tensorflow.org/). It aims to implement the complete Tensorflow API in CSharp which allows .NET developers to develop, train and deploy Machine Learning models with the cross-platform .NET Standard framework. 
 
 [![Join the chat at https://gitter.im/publiclab/publiclab](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/sci-sharp/community)

TensorFlow.NET.sln

@@ -9,6 +9,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TensorFlowNET.Examples", "t
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TensorFlowNET.Core", "src\TensorFlowNET.Core\TensorFlowNET.Core.csproj", "{FD682AC0-7B2D-45D3-8B0D-C6D678B04144}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "NumSharp.Core", "..\NumSharp\src\NumSharp.Core\NumSharp.Core.csproj", "{DE97EAD7-B92C-4112-9690-91C40A97179E}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -27,6 +29,10 @@ Global
 		{FD682AC0-7B2D-45D3-8B0D-C6D678B04144}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{FD682AC0-7B2D-45D3-8B0D-C6D678B04144}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{FD682AC0-7B2D-45D3-8B0D-C6D678B04144}.Release|Any CPU.Build.0 = Release|Any CPU
+		{DE97EAD7-B92C-4112-9690-91C40A97179E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{DE97EAD7-B92C-4112-9690-91C40A97179E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{DE97EAD7-B92C-4112-9690-91C40A97179E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{DE97EAD7-B92C-4112-9690-91C40A97179E}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

src/TensorFlowNET.Core/Framework/op_def_registry.py.cs

@@ -20,32 +20,9 @@ namespace Tensorflow
 
                 foreach (var op_def in op_list.Op)
                     _registered_ops[op_def.Name] = op_def;
-
-                if (!_registered_ops.ContainsKey("NearestNeighbors"))
-                    _registered_ops["NearestNeighbors"] = op_NearestNeighbors();
             }
 
             return _registered_ops;
         }
-
-        /// <summary>
-        /// Doesn't work because the op can't be found on binary
-        /// </summary>
-        /// <returns></returns>
-        private static OpDef op_NearestNeighbors()
-        {
-            var def = new OpDef
-            {
-                Name = "NearestNeighbors"
-            };
-
-            def.InputArg.Add(new ArgDef { Name = "points", Type = DataType.DtFloat });
-            def.InputArg.Add(new ArgDef { Name = "centers", Type = DataType.DtFloat });
-            def.InputArg.Add(new ArgDef { Name = "k", Type = DataType.DtInt64 });
-            def.OutputArg.Add(new ArgDef { Name = "nearest_center_indices", Type = DataType.DtInt64 });
-            def.OutputArg.Add(new ArgDef { Name = "nearest_center_distances", Type = DataType.DtFloat });
-
-            return def;
-        }
     }
 }

src/TensorFlowNET.Core/Operations/ControlFlows/CondContext.cs

@@ -335,7 +335,7 @@ namespace Tensorflow.Operations
 
             ret.Enter();
             foreach (var nested_def in proto.NestedContexts)
-                throw new NotImplementedException("");
+                from_control_flow_context_def(nested_def, import_scope: import_scope);
             ret.Exit();
             return ret;
         }

src/TensorFlowNET.Core/Operations/ControlFlows/ControlFlowContext.cs

@@ -3,7 +3,8 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using Tensorflow.Operations.ControlFlows;
-
+using static Tensorflow.ControlFlowContextDef;
+
 namespace Tensorflow.Operations
 {
     /// <summary>
@@ -184,6 +185,23 @@ namespace Tensorflow.Operations
             return null;
         }
 
+        /// <summary>
+        /// Deserializes `context_def` into the appropriate ControlFlowContext.
+        /// </summary>
+        /// <param name="context_def">ControlFlowContextDef proto</param>
+        /// <param name="import_scope">Name scope to add</param>
+        /// <returns>A ControlFlowContext subclass</returns>
+        protected ControlFlowContext from_control_flow_context_def(ControlFlowContextDef context_def, string import_scope = "")
+        {
+            switch (context_def.CtxtCase)
+            {
+                case CtxtOneofCase.CondCtxt:
+                    return new CondContext().from_proto(context_def.CondCtxt, import_scope: import_scope);
+            }
+
+            throw new NotImplementedException($"Unknown ControlFlowContextDef field: {context_def.CtxtCase}");
+        }
+
         public object to_proto()
         {
             throw new NotImplementedException();

src/TensorFlowNET.Core/Operations/Operation.Implicit.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Tensorflow
+{
+    /// <summary>
+    /// Convert to other datatype implicitly
+    /// </summary>
+    public partial class Operation
+    {
+        public static implicit operator Operation(IntPtr handle) => new Operation(handle);
+        public static implicit operator IntPtr(Operation op) => op._handle;
+        public static implicit operator Tensor(Operation op) => op.output;
+
+        public override string ToString()
+        {
+            return _handle == IntPtr.Zero ? "tf.Operation Undefined" : $"tf.Operation '{name}' type={OpType}";
+        }
+
+        public override bool Equals(object obj)
+        {
+            switch (obj)
+            {
+                case IntPtr val:
+                    return val == _handle;
+                case Operation val:
+                    return val._handle == _handle;
+            }
+
+            return base.Equals(obj);
+        }
+    }
+}

src/TensorFlowNET.Core/Operations/Operation.cs

@@ -248,27 +248,6 @@ namespace Tensorflow
                 s.Check();
                 return NodeDef.Parser.ParseFrom(buffer);
             }
-        }
-
-        public override string ToString()
-        {
-            return _handle == IntPtr.Zero ? "tf.Operation Undefined" : $"tf.Operation '{name}' type={OpType}";
-        }
-
-        public static implicit operator Operation(IntPtr handle) => new Operation(handle);
-        public static implicit operator IntPtr(Operation op) => op._handle;
-
-        public override bool Equals(object obj)
-        {
-            switch (obj)
-            {
-                case IntPtr val:
-                    return val == _handle;
-                case Operation val:
-                    return val._handle == _handle;
-            }
-
-            return base.Equals(obj);
         }
 
         /// <summary>

src/TensorFlowNET.Core/Python.cs

@@ -27,6 +27,11 @@ namespace Tensorflow
             return Enumerable.Range(0, end);
         }
 
+        protected IEnumerable<int> range(int start, int end)
+        {
+            return Enumerable.Range(start, end);
+        }
+
         public static T New<T>(object args) where T : IPyClass
         {
             var instance = Activator.CreateInstance<T>();

src/TensorFlowNET.Core/Sessions/BaseSession.cs

@@ -204,6 +204,12 @@ namespace Tensorflow
 
             switch (tensor.dtype)
             {
+                case TF_DataType.TF_BOOL:
+                    var bools = new bool[tensor.size];
+                    for (ulong i = 0; i < tensor.size; i++)
+                        bools[i] = *(bool*)(offset + (int)(tensor.itemsize * i));
+                    nd = np.array(bools).reshape(ndims);
+                    break;
                 case TF_DataType.TF_STRING:
                     var bytes = tensor.Data();
                     // wired, don't know why we have to start from offset 9.
@@ -211,12 +217,6 @@ namespace Tensorflow
                     var str = UTF8Encoding.Default.GetString(bytes, 9, bytes[8]);
                     nd = np.array(str).reshape();
                     break;
-                case TF_DataType.TF_UINT8:
-                    var _bytes = new byte[tensor.size];
-                    for (ulong i = 0; i < tensor.size; i++)
-                        _bytes[i] = *(byte*)(offset + (int)(tensor.itemsize * i));
-                    nd = np.array(_bytes).reshape(ndims);
-                    break;
                 case TF_DataType.TF_INT16:
                     var shorts = new short[tensor.size];
                     for (ulong i = 0; i < tensor.size; i++)

src/TensorFlowNET.Core/Sessions/_ElementFetchMapper.cs

@@ -10,9 +10,9 @@ namespace Tensorflow
     /// </summary>
     public class _ElementFetchMapper : _FetchMapper
     {
-        private Func<List<object>, object> _contraction_fn;
+        private Func<List<NDArray>, object> _contraction_fn;
 
-        public _ElementFetchMapper(object[] fetches, Func<List<object>, object> contraction_fn)
+        public _ElementFetchMapper(object[] fetches, Func<List<NDArray>, object> contraction_fn)
         {
             var g = ops.get_default_graph();
             ITensorOrOperation el = null;
@@ -31,7 +31,7 @@ namespace Tensorflow
         /// </summary>
         /// <param name="values"></param>
         /// <returns></returns>
-        public override NDArray build_results(List<object> values)
+        public override NDArray build_results(List<NDArray> values)
         {
             NDArray result = null;
 

src/TensorFlowNET.Core/Sessions/_FetchHandler.cs

@@ -42,7 +42,7 @@ namespace Tensorflow
 
         public NDArray build_results(BaseSession session, NDArray[] tensor_values)
         {
-            var full_values = new List<object>();
+            var full_values = new List<NDArray>();
             if (_final_fetches.Count != tensor_values.Length)
                 throw new InvalidOperationException("_final_fetches mismatch tensor_values");
 

src/TensorFlowNET.Core/Sessions/_FetchMapper.cs

@@ -24,19 +24,7 @@ namespace Tensorflow
         {
             var type = values[0].GetType();
             var nd = new NDArray(type, values.Count);
-
-            switch (type.Name)
-            {
-                case "Single":
-                    nd.SetData(values.Select(x => (float)x).ToArray());
-                    break;
-                case "NDArray":
-                    NDArray[] arr = values.Select(x => (NDArray)x).ToArray();
-                    nd = new NDArray(arr);
-                    break;
-                default:
-                    break;
-            }
+            nd.SetData(values.ToArray());
             return nd;
         }
 

src/TensorFlowNET.Core/TensorFlowNET.Core.csproj

@@ -57,4 +57,8 @@ More math/ linalg APIs.</PackageReleaseNotes>
     <Folder Include="Keras\Initializers\" />
   </ItemGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\NumSharp\src\NumSharp.Core\NumSharp.Core.csproj" />
+  </ItemGroup>
+
 </Project>

src/TensorFlowNET.Core/Tensors/Tensor.Creation.cs

@@ -67,8 +67,7 @@ namespace Tensorflow
                 case "Double":
                     Marshal.Copy(nd1.Data<double>(), 0, dotHandle, nd.size);
                     break;
-                case "Byte":
-                    Marshal.Copy(nd1.Data<byte>(), 0, dotHandle, nd.size);
+                //case "Byte":
                     /*var bb = nd.Data<byte>();
                     var bytes = Marshal.AllocHGlobal(bb.Length);
                     Marshal.Copy(bb, 0, bytes, bb.Length);

src/TensorFlowNET.Core/Tensors/Tensor.cs

@@ -195,7 +195,6 @@ namespace Tensorflow
                 case "Double":
                     return TF_DataType.TF_DOUBLE;
                 case "Byte":
-                    return TF_DataType.TF_UINT8;
                 case "String":
                     return TF_DataType.TF_STRING;
                 default:

src/TensorFlowNET.Core/Train/Saving/BaseSaverBuilder.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using Tensorflow.Operations;
 
 namespace Tensorflow
 {
@@ -115,6 +116,9 @@ namespace Tensorflow
                         case List<ITensorOrOperation> values:
                             foreach (var element in values) ;
                             break;
+                        case List<CondContext> values:
+                            foreach (var element in values) ;
+                            break;
                         default:
                             throw new NotImplementedException("_build_internal.check_collection_list");
                     }

test/TensorFlowNET.Examples/ObjectDetection.cs

@@ -15,9 +15,9 @@ namespace TensorFlowNET.Examples
 
     public class ObjectDetection : Python, IExample
     {
-        public int Priority => 7;
+        public int Priority => 11;
         public bool Enabled { get; set; } = true;
-        public string Name => "Image Recognition";
+        public string Name => "Object Detection";
         public float MIN_SCORE = 0.5f;
 
         string modelDir = "ssd_mobilenet_v1_coco_2018_01_28";

test/TensorFlowNET.Examples/TensorFlowNET.Examples.csproj

@@ -14,6 +14,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\..\..\NumSharp\src\NumSharp.Core\NumSharp.Core.csproj" />
     <ProjectReference Include="..\..\src\TensorFlowNET.Core\TensorFlowNET.Core.csproj" />
   </ItemGroup>
 

test/TensorFlowNET.UnitTest/TensorFlowNET.UnitTest.csproj

@@ -22,6 +22,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\..\..\NumSharp\src\NumSharp.Core\NumSharp.Core.csproj" />
     <ProjectReference Include="..\..\src\TensorFlowNET.Core\TensorFlowNET.Core.csproj" />
     <ProjectReference Include="..\TensorFlowNET.Examples\TensorFlowNET.Examples.csproj" />
   </ItemGroup>