diff --git a/ext/opencv/eigenfaces.cpp b/ext/opencv/eigenfaces.cpp
index a4cfd0b..2391740 100644
--- a/ext/opencv/eigenfaces.cpp
+++ b/ext/opencv/eigenfaces.cpp
@@ -61,109 +61,6 @@ rb_initialize(int argc, VALUE argv[], VALUE self)
   return self;
 }
 
-/*
- * call-seq:
- *   train(src, labels)
- *
- * Trains a FaceRecognizer with given data and associated labels.
- */
-VALUE
-rb_train(VALUE self, VALUE src, VALUE labels)
-{
-  Check_Type(src, T_ARRAY);
-  Check_Type(labels, T_ARRAY);
-
-  VALUE *src_ptr = RARRAY_PTR(src);
-  int src_size = RARRAY_LEN(src);
-  std::vector<cv::Mat> images;
-  for (int i = 0; i < src_size; i++) {
-    images.push_back(cv::Mat(CVMAT_WITH_CHECK(src_ptr[i])));
-  }
-
-  VALUE *labels_ptr = RARRAY_PTR(labels);
-  int labels_size = RARRAY_LEN(labels);
-  std::vector<int> local_labels;
-  for (int i = 0; i < labels_size; i++) {
-    local_labels.push_back(NUM2INT(labels_ptr[i]));
-  }
-
-  cv::FaceRecognizer *self_ptr = FACERECOGNIZER(self);
-  try {
-    self_ptr->train(images, local_labels);
-  }
-  catch (cv::Exception& e) {
-    raise_cverror(e);
-  }
-
-  return Qnil;
-}
-
-/*
- * call-seq:
- *   predict(src)
- * 
- * Predicts a label and associated confidence (e.g. distance) for a given input image.
- */
-VALUE
-rb_predict(VALUE self, VALUE src)
-{
-  cv::Mat mat = cv::Mat(CVMAT_WITH_CHECK(src));
-  cv::FaceRecognizer *self_ptr = FACERECOGNIZER(self);
-  int label;
-  try {
-    label = self_ptr->predict(mat);
-  }
-  catch (cv::Exception& e) {
-    raise_cverror(e);
-  }
-
-  return INT2NUM(label);
-}
-
-/*
- * call-seq:
- *   save(filename)
- *
- * Saves this model to a given filename, either as XML or YAML.
- */
-VALUE
-rb_save(VALUE self, VALUE filename)
-{
-  Check_Type(filename, T_STRING);
-  cv::FaceRecognizer *self_ptr = FACERECOGNIZER(self);
-  try {
-    char* s = StringValueCStr(filename);
-    self_ptr->save(std::string(s));
-  }
-  catch (cv::Exception& e) {
-    raise_cverror(e);
-  }
-
-  return Qnil;
-}
-
-/*
- * call-seq:
- *   load(filename)
- *
- * Loads a FaceRecognizer and its model state.
- */
-VALUE
-rb_load(VALUE self, VALUE filename)
-{
-  Check_Type(filename, T_STRING);
-  cv::FaceRecognizer *self_ptr = FACERECOGNIZER(self);
-  try {
-    char* s = StringValueCStr(filename);
-    self_ptr->load(std::string(s));
-  }
-  catch (cv::Exception& e) {
-    raise_cverror(e);
-  }
-
-  return Qnil;
-}
-
 void
 define_ruby_class()
 {
@@ -175,13 +72,9 @@ define_ruby_class()
    * note: this comment is used by rdoc.
    */
   VALUE opencv = rb_module_opencv();
-  rb_klass = rb_define_class_under(opencv, "EigenFaces", rb_cObject);
+  rb_klass = rb_define_class_under(opencv, "EigenFaces", cFaceRecognizer::rb_class());
   rb_define_alloc_func(rb_klass, rb_allocate);
   rb_define_private_method(rb_klass, "initialize", RUBY_METHOD_FUNC(rb_initialize), -1);
-  rb_define_method(rb_klass, "train", RUBY_METHOD_FUNC(rb_train), 2);
-  rb_define_method(rb_klass, "predict", RUBY_METHOD_FUNC(rb_predict), 1);
-  rb_define_method(rb_klass, "save", RUBY_METHOD_FUNC(rb_save), 1);
-  rb_define_method(rb_klass, "load", RUBY_METHOD_FUNC(rb_load), 1);
 }
 
 __NAMESPACE_END_EIGENFACES
diff --git a/ext/opencv/eigenfaces.h b/ext/opencv/eigenfaces.h
index f5cec9f..2dcd350 100644
--- a/ext/opencv/eigenfaces.h
+++ b/ext/opencv/eigenfaces.h
@@ -23,22 +23,9 @@ VALUE rb_class();
 void define_ruby_class();
 VALUE rb_allocate(VALUE klass);
 VALUE rb_initialize(int argc, VALUE argv[], VALUE self);
-VALUE rb_train(VALUE self, VALUE src, VALUE labels);
-VALUE rb_save(VALUE self, VALUE filename);
-VALUE rb_load(VALUE self, VALUE filename);
 
 __NAMESPACE_END_EIGENFACES
-
-inline cv::FaceRecognizer*
-FACERECOGNIZER(VALUE object)
-{
-  cv::FaceRecognizer *ptr;
-  Data_Get_Struct(object, cv::FaceRecognizer, ptr);
-  return ptr;
-}
-
 __NAMESPACE_END_OPENCV
 
 #endif // RUBY_OPENCV_EIGENFACES_H
 
-
diff --git a/ext/opencv/facerecognizer.cpp b/ext/opencv/facerecognizer.cpp
new file mode 100644
index 0000000..69b10b0
--- /dev/null
+++ b/ext/opencv/facerecognizer.cpp
@@ -0,0 +1,149 @@
+/************************************************************
+
+   facerecognizer.cpp -
+
+   $Author: ser1zw $
+
+   Copyright (C) 2013 ser1zw
+
+************************************************************/
+#include <stdio.h>
+#include "facerecognizer.h"
+/*
+ * Document-class: OpenCV::FaceRecognizer
+ *
+ */
+__NAMESPACE_BEGIN_OPENCV
+__NAMESPACE_BEGIN_FACERECOGNIZER
+
+VALUE rb_klass;
+
+VALUE
+rb_class()
+{
+  return rb_klass;
+}
+
+/*
+ * call-seq:
+ *   train(src, labels)
+ *
+ * Trains a FaceRecognizer with given data and associated labels.
+ */
+VALUE
+rb_train(VALUE self, VALUE src, VALUE labels)
+{
+  Check_Type(src, T_ARRAY);
+  Check_Type(labels, T_ARRAY);
+
+  VALUE *src_ptr = RARRAY_PTR(src);
+  int src_size = RARRAY_LEN(src);
+  std::vector<cv::Mat> images;
+  for (int i = 0; i < src_size; i++) {
+    images.push_back(cv::Mat(CVMAT_WITH_CHECK(src_ptr[i])));
+  }
+
+  VALUE *labels_ptr = RARRAY_PTR(labels);
+  int labels_size = RARRAY_LEN(labels);
+  std::vector<int> local_labels;
+  for (int i = 0; i < labels_size; i++) {
+    local_labels.push_back(NUM2INT(labels_ptr[i]));
+  }
+
+  cv::FaceRecognizer *self_ptr = FACERECOGNIZER(self);
+  try {
+    self_ptr->train(images, local_labels);
+  }
+  catch (cv::Exception& e) {
+    raise_cverror(e);
+  }
+
+  return Qnil;
+}
+
+/*
+ * call-seq:
+ *   predict(src)
+ * 
+ * Predicts a label and associated confidence (e.g. distance) for a given input image.
+ */
+VALUE
+rb_predict(VALUE self, VALUE src)
+{
+  cv::Mat mat = cv::Mat(CVMAT_WITH_CHECK(src));
+  cv::FaceRecognizer *self_ptr = FACERECOGNIZER(self);
+  int label;
+  try {
+    label = self_ptr->predict(mat);
+  }
+  catch (cv::Exception& e) {
+    raise_cverror(e);
+  }
+
+  return INT2NUM(label);
+}
+
+/*
+ * call-seq:
+ *   save(filename)
+ *
+ * Saves this model to a given filename, either as XML or YAML.
+ */
+VALUE
+rb_save(VALUE self, VALUE filename)
+{
+  Check_Type(filename, T_STRING);
+  cv::FaceRecognizer *self_ptr = FACERECOGNIZER(self);
+  try {
+    char* s = StringValueCStr(filename);
+    self_ptr->save(std::string(s));
+  }
+  catch (cv::Exception& e) {
+    raise_cverror(e);
+  }
+
+  return Qnil;
+}
+
+/*
+ * call-seq:
+ *   load(filename)
+ *
+ * Loads a FaceRecognizer and its model state.
+ */
+VALUE
+rb_load(VALUE self, VALUE filename)
+{
+  Check_Type(filename, T_STRING);
+  cv::FaceRecognizer *self_ptr = FACERECOGNIZER(self);
+  try {
+    char* s = StringValueCStr(filename);
+    self_ptr->load(std::string(s));
+  }
+  catch (cv::Exception& e) {
+    raise_cverror(e);
+  }
+
+  return Qnil;
+}
+
+void
+define_ruby_class()
+{
+  if (rb_klass)
+    return;
+  /* 
+   * opencv = rb_define_module("OpenCV");
+   * 
+   * note: this comment is used by rdoc.
+   */
+  VALUE opencv = rb_module_opencv();
+  rb_klass = rb_define_class_under(opencv, "FaceRecognizer", rb_cObject);
+  rb_define_method(rb_klass, "train", RUBY_METHOD_FUNC(rb_train), 2);
+  rb_define_method(rb_klass, "predict", RUBY_METHOD_FUNC(rb_predict), 1);
+  rb_define_method(rb_klass, "save", RUBY_METHOD_FUNC(rb_save), 1);
+  rb_define_method(rb_klass, "load", RUBY_METHOD_FUNC(rb_load), 1);
+}
+
+__NAMESPACE_END_FACERECOGNIZER
+__NAMESPACE_END_OPENCV
diff --git a/ext/opencv/facerecognizer.h b/ext/opencv/facerecognizer.h
new file mode 100644
index 0000000..dccaef5
--- /dev/null
+++ b/ext/opencv/facerecognizer.h
@@ -0,0 +1,41 @@
+/************************************************************
+
+   facerecognizer.h
+
+   $Author: ser1zw $
+
+   Copyright (C) 2013 ser1zw
+
+************************************************************/
+#ifndef RUBY_OPENCV_FACERECOGNIZER_H
+#define RUBY_OPENCV_FACERECOGNIZER_H
+
+#include "opencv.h"
+
+#define __NAMESPACE_BEGIN_FACERECOGNIZER namespace cFaceRecognizer {
+#define __NAMESPACE_END_FACERECOGNIZER }
+
+__NAMESPACE_BEGIN_OPENCV
+__NAMESPACE_BEGIN_FACERECOGNIZER
+
+VALUE rb_class();
+
+void define_ruby_class();
+VALUE rb_train(VALUE self, VALUE src, VALUE labels);
+VALUE rb_save(VALUE self, VALUE filename);
+VALUE rb_load(VALUE self, VALUE filename);
+
+__NAMESPACE_END_FACERECOGNIZER
+
+inline cv::FaceRecognizer*
+FACERECOGNIZER(VALUE object)
+{
+  cv::FaceRecognizer *ptr;
+  Data_Get_Struct(object, cv::FaceRecognizer, ptr);
+  return ptr;
+}
+
+__NAMESPACE_END_OPENCV
+
+#endif // RUBY_OPENCV_FACERECOGNIZER_H
+
diff --git a/ext/opencv/opencv.cpp b/ext/opencv/opencv.cpp
index f163c46..9787d80 100644
--- a/ext/opencv/opencv.cpp
+++ b/ext/opencv/opencv.cpp
@@ -707,6 +707,7 @@ extern "C" {
     mOpenCV::cCvAvgComp::define_ruby_class();
     mOpenCV::cCvHaarClassifierCascade::define_ruby_class();
 
+    mOpenCV::cFaceRecognizer::define_ruby_class();
     mOpenCV::cEigenFaces::define_ruby_class();
 
     mOpenCV::mGUI::define_ruby_module();
diff --git a/ext/opencv/opencv.h b/ext/opencv/opencv.h
index 4f5aa4f..2fd9881 100644
--- a/ext/opencv/opencv.h
+++ b/ext/opencv/opencv.h
@@ -130,6 +130,7 @@ extern "C" {
 
 #include "cvfeaturetree.h"
 
+#include "facerecognizer.h"
 #include "eigenfaces.h"
 
 // GUI