add FilterMap for the coord mapping used by (de)conv and pooling layers

BVLC · Dec 31, 2014 · 8e459ef · 8e459ef
1 parent 9b44090
commit 8e459ef
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/include/caffe/util/coords.hpp b/include/caffe/util/coords.hpp
@@ -45,6 +45,17 @@ class DiagonalAffineMap {
   vector<pair<Dtype, Dtype> > coefs_;
 };
 
+template <typename Dtype>
+DiagonalAffineMap<Dtype> FilterMap(const int kernel_h, const int kernel_w,
+    const int stride_h, const int stride_w, const int pad_h, const int pad_w) {
+  vector<pair<Dtype, Dtype> > coefs;
+  coefs.push_back(make_pair(stride_h,
+        static_cast<Dtype>(kernel_h - 1) / 2 - pad_h));
+  coefs.push_back(make_pair(stride_w,
+        static_cast<Dtype>(kernel_w - 1) / 2 - pad_w));
+  return DiagonalAffineMap<Dtype>(coefs);
+}
+
 }  // namespace caffe
 
 #endif  // CAFFE_UTIL_COORDS_H_