caffe patch for backwardFromToF

gistfile1.txt

diff --git a/Makefile b/Makefile
index e4e66df..140acba 100644
--- a/Makefile
+++ b/Makefile
@@ -171,7 +171,7 @@ ifneq ($(CPU_ONLY), 1)
 endif
 LIBRARIES += glog gflags protobuf leveldb snappy \
 	lmdb boost_system hdf5_hl hdf5 m \
-	opencv_core opencv_highgui opencv_imgproc
+	opencv_core opencv_highgui opencv_imgproc opencv_imgcodecs
 PYTHON_LIBRARIES := boost_python python2.7
 WARNINGS := -Wall -Wno-sign-compare
 
diff --git a/include/caffe/net.hpp b/include/caffe/net.hpp
index 5665df1..b849f3e 100644
--- a/include/caffe/net.hpp
+++ b/include/caffe/net.hpp
@@ -64,6 +64,7 @@ class Net {
    */
   void Backward();
   void BackwardFromTo(int start, int end);
+  void BackwardFromToF(int start, int end);
   void BackwardFrom(int start);
   void BackwardTo(int end);
 
diff --git a/matlab/+caffe/Net.m b/matlab/+caffe/Net.m
index e6295bb..8f13b66 100644
--- a/matlab/+caffe/Net.m
+++ b/matlab/+caffe/Net.m
@@ -87,6 +87,12 @@ classdef Net < handle
     function backward_prefilled(self)
       caffe_('net_backward', self.hNet_self);
     end
+    function backward_from_to(self, from, to)
+      caffe_('net_backward_from_to', self.hNet_self, from, to);
+    end
+    function backward_from_to_f(self, from, to)
+      caffe_('net_backward_from_to_f', self.hNet_self, from, to);
+    end
     function res = forward(self, input_data)
       CHECK(iscell(input_data), 'input_data must be a cell array');
       CHECK(length(input_data) == length(self.inputs), ...
diff --git a/matlab/+caffe/private/caffe_.cpp b/matlab/+caffe/private/caffe_.cpp
index 4e0ebc1..30e7f83 100644
--- a/matlab/+caffe/private/caffe_.cpp
+++ b/matlab/+caffe/private/caffe_.cpp
@@ -301,6 +301,16 @@ static void net_forward(MEX_ARGS) {
   net->ForwardPrefilled();
 }
 
+// Usage: caffe_('net_forward', hNet, from, to)
+static void net_forward_from_to(MEX_ARGS) {
+  mxCHECK(nrhs == 3 && mxIsStruct(prhs[0]),
+      "Usage: caffe_('net_forward', hNet, from, to)");
+  Net<float>* net = handle_to_ptr<Net<float> >(prhs[0]);
+  double from = mxGetScalar(prhs[1]);
+  double to = mxGetScalar(prhs[2]);  
+  net->ForwardFromTo(from, to);
+}
+
 // Usage: caffe_('net_backward', hNet)
 static void net_backward(MEX_ARGS) {
   mxCHECK(nrhs == 1 && mxIsStruct(prhs[0]),
@@ -309,6 +319,25 @@ static void net_backward(MEX_ARGS) {
   net->Backward();
 }
 
+// Usage: caffe_('net_backward', hNet)
+static void net_backward_from_to(MEX_ARGS) {
+  mxCHECK(nrhs == 3 && mxIsStruct(prhs[0]),
+      "Usage: caffe_('net_backward_from_to', hNet, from, to)");
+  Net<float>* net = handle_to_ptr<Net<float> >(prhs[0]);
+  double from = mxGetScalar(prhs[1]);
+  double to = mxGetScalar(prhs[2]);    
+  net->BackwardFromTo(from, to);
+}
+// Usage: caffe_('net_backward', hNet)
+static void net_backward_from_to_f(MEX_ARGS) {
+  mxCHECK(nrhs == 3 && mxIsStruct(prhs[0]),
+      "Usage: caffe_('net_backward_from_to_f', hNet, from, to)");
+  Net<float>* net = handle_to_ptr<Net<float> >(prhs[0]);
+  double from = mxGetScalar(prhs[1]);
+  double to = mxGetScalar(prhs[2]);    
+  net->BackwardFromToF(from, to);
+}
+
 // Usage: caffe_('net_copy_from', hNet, weights_file)
 static void net_copy_from(MEX_ARGS) {
   mxCHECK(nrhs == 2 && mxIsStruct(prhs[0]) && mxIsChar(prhs[1]),
@@ -497,7 +526,10 @@ static handler_registry handlers[] = {
   { "get_net",            get_net         },
   { "net_get_attr",       net_get_attr    },
   { "net_forward",        net_forward     },
+  { "net_forward_from_to",        net_forward_from_to     },
   { "net_backward",       net_backward    },
+  { "net_backward_from_to",       net_backward_from_to    },
+  { "net_backward_from_to_f",       net_backward_from_to_f    },
   { "net_copy_from",      net_copy_from   },
   { "net_reshape",        net_reshape     },
   { "net_save",           net_save        },
diff --git a/models/bvlc_googlenet/deploy.prototxt b/models/bvlc_googlenet/deploy.prototxt
index 4648bf2..54923a1 100644
--- a/models/bvlc_googlenet/deploy.prototxt
+++ b/models/bvlc_googlenet/deploy.prototxt
@@ -1,4 +1,5 @@
 name: "GoogleNet"
+force_backward: true
 input: "data"
 input_dim: 10
 input_dim: 3
diff --git a/models/bvlc_reference_caffenet/deploy.prototxt b/models/bvlc_reference_caffenet/deploy.prototxt
index 29ccf14..072ec90 100644
--- a/models/bvlc_reference_caffenet/deploy.prototxt
+++ b/models/bvlc_reference_caffenet/deploy.prototxt
@@ -1,4 +1,5 @@
 name: "CaffeNet"
+force_backward: true
 input: "data"
 input_dim: 10
 input_dim: 3
diff --git a/src/caffe/net.cpp b/src/caffe/net.cpp
index a18ee63..3360d2f 100644
--- a/src/caffe/net.cpp
+++ b/src/caffe/net.cpp
@@ -577,6 +577,20 @@ void Net<Dtype>::BackwardFromTo(int start, int end) {
 }
 
 template <typename Dtype>
+void Net<Dtype>::BackwardFromToF(int start, int end) {
+  CHECK_GE(end, 0);
+  CHECK_LT(start, layers_.size());
+  for (int i = start; i >= end; --i) {
+      for (int j = 0; j < bottom_need_backward_[i].size(); ++j) {
+          bottom_need_backward_[i][j] = true;
+      }
+      layers_[i]->Backward(
+          top_vecs_[i], bottom_need_backward_[i], bottom_vecs_[i]);
+      if (debug_info_) { BackwardDebugInfo(i); }
+  }
+}
+
+template <typename Dtype>
 void Net<Dtype>::InputDebugInfo(const int input_id) {
   const Blob<Dtype>& blob = *net_input_blobs_[input_id];
   const string& blob_name = blob_names_[net_input_blob_indices_[input_id]];