void COpenCVCheck::OpenCVBinary(CString fileName)
{
CvScalar colors[] = {{255,255,255},{0,0,0}};
IplImage* pImg; //声明IplImage指针
if((pImg = cvLoadImage(fileName, 0)) != 0)
{
IplImage* dst = NULL;
dst=cvCreateImage(cvSize(pImg->width,pImg->height),IPL_DEPTH_8U,1);
//cvThreshold(pImg,dst,185,255,CV_THRESH_BINARY);
cvAdaptiveThreshold(pImg,dst,255,CV_ADAPTIVE_THRESH_MEAN_C,CV_THRESH_BINARY,5,3);//二值化
ReverseColor(dst);
for (int kk = 0;kk<2;kk++) //去噪
{
CvSeq *contours;
CvMemStorage* storage = cvCreateMemStorage(0);
cvFindContours( dst, storage, &contours, sizeof(CvContour), CV_RETR_TREE, CV_CHAIN_APPROX_SIMPLE, cvPoint(0,0) );
//此函数以黑色为背景色
while(contours)
{
//approximate contour with accuracy proportional
CvSeq* result = cvApproxPoly( contours, sizeof(CvContour),
storage,CV_POLY_APPROX_DP, 3, 1);
//to filter the noisy contour
if(fabs(cvContourArea(result,CV_WHOLE_SEQ)) < 2)
{
if (result->total > 0)
{
for(int i = 0; i < (result ? result->total : 0); i++)
{
CvRect* r = (CvRect*)cvGetSeqElem(result,i);
cvSet2D(dst,r->y,r->x,colors[1]);
}
}
}
contours = contours->h_next;
}
}
ReverseColor(dst);
ClearNoise(dst);
cvSaveImage(fileName,dst);
cvReleaseImage(&dst);
cvReleaseImage(&pImg);
}
}
//ray tracing
void CPURayTracer::RayTrace()
{
//reset the timer
m_Timer.Reset();
//start the timer
m_Timer.Start();
//bind the buffer
BindBuffer();
for( int j = m_iImageHeight - 1 ; j > -1 ; j-- )
{
for( int i = 0 ; i < m_iImageWidth; i++ )
{
//current index
int currentIndex = j * m_iImageWidth + i;
//current ray
_float4 dir , ori;
//generate a ray for current pixel
GenerateRay( i , j , &ori , &dir );
//copy the image
m_pImageBackBuffer[ currentIndex ] = Trace( ori , dir );
//copy the image
m_pImageBuffer[ currentIndex ] = RGB_FLOAT4( m_pImageBackBuffer[ currentIndex ] );
//update current pixel number
m_iCurrentPixelNum++;
if( m_bForceStop )
break;
}
if( m_bForceStop )
break;
}
//clear the noise
ClearNoise( m_pImageBackBuffer );
//end the timer
m_Timer.Stop();
m_ElapsedTime = (int)m_Timer.GetElapsedTime();
}
