树莓派opencv摄像头的边缘显示检测

程序

one.cpp

#include "opencv2/opencv.hpp"

using namespace cv;

int main(int, char**)
{
	   VideoCapture cap(0); // open the default camera
	   if(!cap.isOpened())  // check if we succeeded
	   return -1;

	    Mat edges;
	    namedWindow("edges",1);
	    for(;;)
	    {
		   Mat frame;
	       cap >> frame; // get a new frame from camera

		    cvtColor(frame, edges, CV_BGR2GRAY);
		    GaussianBlur(edges, edges, Size(7,7), 1.5, 1.5);
		    Canny(edges, edges, 0, 30, 3);
	        imshow("edges", edges);
			if(waitKey(30) >= 0) break;
	    }
			 // the camera will be deinitialized automatically in
			 // VideoCapture destructor
	  return 0;
  }

makefile

INCLUDE = $(shell pkg-config --cflags opencv)

LIBS = $(shell pkg-config --libs opencv)

SOURCES = one.cpp

# 目标文件
#
 OBJECTS = $(SOURCES:.cpp=.o)
#
# # 可执行文件
#
 TARGET = one
#
 $(TARGET):$(OBJECTS)
#
	g++ -o $(TARGET) $(OBJECTS) -I $(INCLUDE) $(LIBS)
#
     $(OBJECTS):$(SOURCES)
#
	g++ -c $(SOURCES)
#
clean:
#
	rm $(OBJECTS) $(TARGET)
#
#             # 编译规则 $@代表目标文件 $< 代表第一个依赖文件

%.o:%.cpp
	 g++ -I $(INCLUDE) -o $@ -c $<

然后编译一下 #make
然后运行# ./test/test_two/one
即可显示出来
文档链接在https://download.csdn.net/download/qq_38237827/12116010