Merged android-experimental branch back to trunk.

android/apps/OpenCV_SAMPLE/jni/cvsample.cpp

@@ -0,0 +1,27 @@
+#include "cvsample.h"
+#include <opencv2/imgproc/imgproc.hpp>
+
+void CVSample::canny(const cv::Mat& input, cv::Mat& output, int edgeThresh)
+{
+  if (input.empty())
+    return;
+  cv::Mat gray;
+  if (input.channels() == 3)
+  {
+    cv::cvtColor(input, gray, CV_RGB2GRAY);
+  }
+  else
+    gray = input;
+  cv::Canny(gray, output, edgeThresh, edgeThresh * 3, 3);
+}
+
+void CVSample::invert(cv::Mat& inout)
+{
+  cv::bitwise_not(inout, inout);
+}
+void CVSample::blur(cv::Mat& inout, int half_kernel_size)
+{
+  int ksz = half_kernel_size*2 + 1;
+  cv::Size kernel(ksz,ksz);
+  cv::blur(inout,inout,kernel);
+}