Increase chapel-webcam demo performance.

Author: Iainmon

demos/video/chapel-webcam/Makefile

@@ -1,4 +1,4 @@
-
+# make clean && make libsmol && make main && ./main
 -include lib/Makefile.smol
 
 

demos/video/chapel-webcam/main.cpp

@@ -7,11 +7,16 @@
 
 
 cv::Mat new_frame(cv::Mat &frame) {
-    cv::Mat rgb_uchar_frame;
-    cv::cvtColor(frame, rgb_uchar_frame, cv::COLOR_BGR2RGB);
+    // cv::Mat rgb_uchar_frame;
+    // cv::cvtColor(frame, rgb_uchar_frame, cv::COLOR_BGR2RGB);
+
+    // cv::Mat rgb_float_frame;
+    // rgb_uchar_frame.convertTo(rgb_float_frame, CV_32FC3, 1.0f/255.0f);
+
 
     cv::Mat rgb_float_frame;
-    rgb_uchar_frame.convertTo(rgb_float_frame, CV_32FC3, 1.0f/255.0f);
+    cv::cvtColor(frame, rgb_float_frame, cv::COLOR_BGR2RGB);
+    rgb_float_frame.convertTo(rgb_float_frame, CV_32FC3, 1.0f/255.0f);
 
     // cv::MatSize size = rgb_frame.size;
     // std::cout << "x " << size[0] << " y " << size[1] << " channels " << rgb_frame.dims << std::endl;

demos/video/chapel-webcam/smol.chpl

@@ -29,7 +29,7 @@ export proc getNewFrame(ref frame: [] real(32),height: int, width: int,channels:
     // return [x in frame] m;
 
     const shape = (height,width,channels);
-    forall (i,color) in zip(0..<frame.size,frame) {
+    forall i in 0..<frame.size {
         const idx = utils.indexAt(i,(...shape));
         const (h,w,c) = idx;
         // const color = frame[i];