mirror of
https://github.com/opencv/opencv.git
synced 2024-11-30 14:29:49 +08:00
120 lines
3.1 KiB
C++
120 lines
3.1 KiB
C++
|
|
#include "opencv2/imgproc/imgproc.hpp"
|
|
#include "opencv2/highgui/highgui.hpp"
|
|
#include "opencv2/gpu/gpu.hpp"
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
|
|
using namespace cv;
|
|
using namespace cv::gpu;
|
|
|
|
void help()
|
|
{
|
|
|
|
printf("\nShow off image morphology: erosion, dialation, open and close\n"
|
|
"Call:\n morphology2 [image]\n"
|
|
"This program also shows use of rect, elipse and cross kernels\n\n");
|
|
printf( "Hot keys: \n"
|
|
"\tESC - quit the program\n"
|
|
"\tr - use rectangle structuring element\n"
|
|
"\te - use elliptic structuring element\n"
|
|
"\tc - use cross-shaped structuring element\n"
|
|
"\tSPACE - loop through all the options\n" );
|
|
}
|
|
|
|
GpuMat src, dst;
|
|
|
|
int element_shape = MORPH_RECT;
|
|
|
|
//the address of variable which receives trackbar position update
|
|
int max_iters = 10;
|
|
int open_close_pos = 0;
|
|
int erode_dilate_pos = 0;
|
|
|
|
// callback function for open/close trackbar
|
|
void OpenClose(int, void*)
|
|
{
|
|
int n = open_close_pos - max_iters;
|
|
int an = n > 0 ? n : -n;
|
|
Mat element = getStructuringElement(element_shape, Size(an*2+1, an*2+1), Point(an, an) );
|
|
if( n < 0 )
|
|
cv::gpu::morphologyEx(src, dst, CV_MOP_OPEN, element);
|
|
else
|
|
cv::gpu::morphologyEx(src, dst, CV_MOP_CLOSE, element);
|
|
imshow("Open/Close",(Mat)dst);
|
|
}
|
|
|
|
// callback function for erode/dilate trackbar
|
|
void ErodeDilate(int, void*)
|
|
{
|
|
int n = erode_dilate_pos - max_iters;
|
|
int an = n > 0 ? n : -n;
|
|
Mat element = getStructuringElement(element_shape, Size(an*2+1, an*2+1), Point(an, an) );
|
|
if( n < 0 )
|
|
cv::gpu::erode(src, dst, element);
|
|
else
|
|
cv::gpu::dilate(src, dst, element);
|
|
imshow("Erode/Dilate",(Mat)dst);
|
|
}
|
|
|
|
|
|
int main( int argc, char** argv )
|
|
{
|
|
char* filename = argc == 2 ? argv[1] : (char*)"baboon.jpg";
|
|
if (string(argv[1]) == "--help")
|
|
{
|
|
help();
|
|
return -1;
|
|
}
|
|
|
|
src.upload(imread(filename, 1));
|
|
if (src.empty())
|
|
{
|
|
help();
|
|
return -1;
|
|
}
|
|
|
|
cv::gpu::printShortCudaDeviceInfo(cv::gpu::getDevice());
|
|
|
|
help();
|
|
|
|
|
|
if (src.channels() == 3)
|
|
{
|
|
// gpu support only 4th channel images
|
|
GpuMat src4ch;
|
|
cv::gpu::cvtColor(src, src4ch, CV_BGR2BGRA);
|
|
src = src4ch;
|
|
}
|
|
|
|
//create windows for output images
|
|
namedWindow("Open/Close",1);
|
|
namedWindow("Erode/Dilate",1);
|
|
|
|
open_close_pos = erode_dilate_pos = max_iters;
|
|
createTrackbar("iterations", "Open/Close",&open_close_pos,max_iters*2+1,OpenClose);
|
|
createTrackbar("iterations", "Erode/Dilate",&erode_dilate_pos,max_iters*2+1,ErodeDilate);
|
|
|
|
for(;;)
|
|
{
|
|
int c;
|
|
|
|
OpenClose(open_close_pos, 0);
|
|
ErodeDilate(erode_dilate_pos, 0);
|
|
c = cvWaitKey(0);
|
|
|
|
if( (char)c == 27 )
|
|
break;
|
|
if( (char)c == 'e' )
|
|
element_shape = MORPH_ELLIPSE;
|
|
else if( (char)c == 'r' )
|
|
element_shape = MORPH_RECT;
|
|
else if( (char)c == 'c' )
|
|
element_shape = MORPH_CROSS;
|
|
else if( (char)c == ' ' )
|
|
element_shape = (element_shape + 1) % 3;
|
|
}
|
|
|
|
return 0;
|
|
}
|