int main(int argc, char **argv)
{
IplImage *img_rgb = cvLoadImage(argv[1]);
IplImage *img_gry =
cvCreateImage(cvSize(img_rgb->width, img_rgb->height), img_rgb->depth,
1);
cvCvtColor(img_rgb, img_gry, CV_BGR2GRAY);
IplImage *img_pyr = doPyrDown(img_gry, IPL_GAUSSIAN_5x5);
IplImage *img_pyr2 = doPyrDown(img_pyr, IPL_GAUSSIAN_5x5);
IplImage *img_cny = doCanny(img_pyr2, 10, 100, 3);
cvNamedWindow("Example Gray", CV_WINDOW_AUTOSIZE);
cvNamedWindow("Example Pyr", CV_WINDOW_AUTOSIZE);
cvNamedWindow("Example Canny", CV_WINDOW_AUTOSIZE);
cvShowImage("Example Gray", img_gry);
cvShowImage("Example Pyr", img_pyr2);
cvShowImage("Example Canny", img_cny);
cvWaitKey(0);
cvReleaseImage(&img_rgb);
cvReleaseImage(&img_gry);
cvReleaseImage(&img_pyr);
cvReleaseImage(&img_pyr2);
cvReleaseImage(&img_cny);
cvDestroyWindow("Example Gray");
cvDestroyWindow("Example Pyr");
cvDestroyWindow("Example Canny");
return 0;
}
void ImageApp::setupUi(){
imageLabel = new QLabel();
originalButton = new QPushButton("打开图像");
connect(originalButton, SIGNAL(clicked()), this, SLOT(doOpenImage()));
//connect(originalButton, SIGNAL(clicked()), this, SLOT(showOriginalImage()));
blurButton = new QPushButton("高斯模糊");
connect(blurButton, SIGNAL(clicked()), this, SLOT(doGaussianBlur()));
cannyButton = new QPushButton("边缘检测");
connect(cannyButton, SIGNAL(clicked()), this, SLOT(doCanny()));
slicButton = new QPushButton("超像素分割");
connect(slicButton, SIGNAL(clicked()), this, SLOT(doSLIC()));
quitButton = new QPushButton("退出");
connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
buttonsLayout = new QVBoxLayout(); // 实例化一个QVBoxLayout对象，用于放置各个按钮
buttonsLayout->addWidget(originalButton);
buttonsLayout->addWidget(blurButton);
buttonsLayout->addWidget(cannyButton);
buttonsLayout->addWidget(slicButton);
buttonsLayout->addStretch(); //创建一个可伸缩的box
buttonsLayout->addWidget(quitButton);
mainLayout = new QHBoxLayout();
mainLayout->addWidget(imageLabel);
if (originalImage.data) {
mainLayout->addLayout(buttonsLayout);
}
setLayout(mainLayout);
setWindowTitle("图像处理小玩意");
}
/** Converts IplImage* in to 1-channel to use doCanny().
Just a convenience function to perform canny detection
on a 3-channel IplImage*. The high and low thresholds
determine the range and sensitivity of edge detection.
Changing aperture from 3 casues segementation faults.
*/
IplImage* Camera::edgeDetection(IplImage* in, double lowThresh, double highThresh, double aperture){
// Convert image to grayscale because Canny requires 1-channel
// Copy to new image so it is a non-destructive change
IplImage* gray = cvCreateImage( cvGetSize(in), 8, 1);
cvCvtColor(in, gray, CV_BGR2GRAY);
gray = doCanny(gray, lowThresh, highThresh, aperture);
return gray;
}
int main(int argc, char** argv) {
IplImage* image = cvLoadImage(argv[1], 0);
cvNamedWindow("Ex4_in", CV_WINDOW_AUTOSIZE);
cvNamedWindow("Ex4_out", CV_WINDOW_AUTOSIZE);
cvShowImage("Ex4_in", image);
IplImage* out = doPyrDown(image, IPL_GAUSSIAN_5x5);
IplImage* out1 = doPyrDown(out, IPL_GAUSSIAN_5x5);
IplImage* out2 = doCanny(out1, 10, 100, 3);
cvShowImage("Ex4_out", out2);
cvMoveWindow("Ex4_out", 0, 0);
cvReleaseImage(&out);
cvReleaseImage(&out2);
cvWaitKey(0);
cvDestroyWindow("Ex4_in");
cvDestroyWindow("Ex4_out");
return 0;
}
int main( int argc, char* argv[] )
{
/* Create 3 windows */
cvNamedWindow( "Exercise_4_1_a_input", CV_WINDOW_AUTOSIZE );
cvNamedWindow( "Exercise_4_1_a_gray", CV_WINDOW_AUTOSIZE );
cvNamedWindow( "Exercise_4_1_a_canny", CV_WINDOW_AUTOSIZE );
g_capture = cvCreateCameraCapture(0);
IplImage* frame = cvQueryFrame( g_capture );
IplImage* frameGray = cvCreateImage(
cvGetSize(frame),
IPL_DEPTH_8U,
1);
IplImage* frameCanny;
while(1)
{
frame = cvQueryFrame( g_capture );
if( !frame ) break;
cvShowImage( "Exercise_4_1_a_input", frame );
cvCvtColor( frame, frameGray, CV_RGB2GRAY );
cvShowImage( "Exercise_4_1_a_gray", frameGray );
frameCanny = doCanny( frame, 10, 150, 3 );
cvShowImage( "Exercise_4_1_a_canny", frameCanny );
char c = cvWaitKey(33);
if( c == 27 ) break;
}
/* Cleanup */
cvReleaseCapture( &g_capture );
cvDestroyWindow( "Exercise_4_1_a_canny" );
cvDestroyWindow( "Exercise_4_1_a_gray" );
cvDestroyWindow( "Exercise_4_1_a_input" );
return 0;
}
int main(int argc, char** argv) {
cvNamedWindow("Example Gray", CV_WINDOW_AUTOSIZE);
cvNamedWindow("Example Pyr", CV_WINDOW_AUTOSIZE);
cvNamedWindow("Example Canny", CV_WINDOW_AUTOSIZE);
IplImage* img_rgb = cvLoadImage(argv[1]);
IplImage* out;
out = cvCreateImage(cvSize(img_rgb->width, img_rgb->height),
img_rgb->depth, 1);
cvCvtColor(img_rgb, out, CV_BGR2GRAY);
cvShowImage("Example Gray", out);
out = doPyrDown(out);
out = doPyrDown(out);
cvShowImage("Example Pyr", out);
out = doCanny(out, 10, 100, 3);
cvShowImage("Example Canny", out);
cvWaitKey(0);
cvReleaseImage(&out);
cvDestroyWindow("Example Gray");
cvDestroyWindow("Example Pyr");
cvDestroyWindow("Example Canny");
return 0;
}
void CannyTestWidget::paintGL()
{
if(m_vi.isFrameNew(0))
{
m_vi.getPixels(0, &ucv::gil::view(m_frame)[0][0], true, true);
doCanny();
glBindTexture(GL_TEXTURE_2D, m_video_texture);
glTexSubImage2D(
GL_TEXTURE_2D,
0,
0, 0,
CANNY_TEST_WIDTH, CANNY_TEST_HEIGHT,
GL_RGB,
GL_UNSIGNED_BYTE,
&ucv::gil::view(m_frame)[0][0]
);
glBindTexture(GL_TEXTURE_2D, 0);
}
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-1, 1, -1, 1, -1, 1);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glDisable(GL_DEPTH_TEST);
glDisable(GL_NORMALIZE);
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
glDisable(GL_LIGHTING);
glShadeModel(GL_SMOOTH);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, m_video_texture);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glBegin(GL_QUADS) ;
{
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f,-1.0f, 0.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f,-1.0f, 0.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, 1.0f, 0.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, 1.0f, 0.0f);
}
glEnd();
if(!m_contours.empty())
{
glEnable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
glLineWidth(1.0f);
glColor4f(0.0f,1.0f,0.0f,1.0f);
for(std::list<contour_t>::iterator ic=m_contours.begin();ic!=m_contours.end();++ic)
{
contour_t &contour=*ic;
glBegin(GL_LINE_LOOP);
for(boost::uint32_t cp=0;cp<contour.m_points.size();++cp)
{
float const vertex[3]=
{
+2.0f*(float(contour.m_points[cp].x())/float(CANNY_TEST_WIDTH)-0.5f),
-2.0f*(float(contour.m_points[cp].y())/float(CANNY_TEST_HEIGHT)-0.5f),
0.0f
};
glVertex3fv(vertex);
}
glEnd();
}
}
}
