Basic-Functions.rar_The Conversion

#include "cv.h" #include "cxcore.h" #include "highgui.h" #include "stdio.h" //Functions Declarations int isImageBlack(IplImage *srcImg,int width,int height); void IPLcvtColor(IplImage *,IplImage *,int); void IPLflip(IplImage *,IplImage *,int); void IPLLowPassFilter(IplImage *,IplImage *); void IPLHighPassFilter(IplImage *,IplImage *); int main() { //Capture from Camera //CvCapture *input_video=cvCaptureFromCAM(0); CvCapture *input_video = cvCaptureFromAVI("2.avi"); if (input_video == NULL) { printf("Error: Can't get input frame.\n"); return -1; } IplImage *frame = NULL; while(true) { int statusFrame=1; do { statusFrame=1; frame = cvQueryFrame( input_video ); if (frame == NULL) { printf("The Video Ends\n"); return -1; } statusFrame=isImageBlack(frame,frame->width,frame->height); }while(statusFrame==1); //Image Operations /* //Operation 1................Flip the video IplImage *flipImage = cvCreateImage(cvGetSize(frame),IPL_DEPTH_8U,3); IPLflip(frame,flipImage,0); */ cvNamedWindow("Live Frame",1); cvShowImage("Live Frame",frame); //Operation 2................Gray Image Conversion IplImage *grayImage = cvCreateImage(cvGetSize(frame),IPL_DEPTH_8U,1); IPLcvtColor(frame,grayImage,0); cvNamedWindow("Gray Image",1); cvShowImage("Gray Image",grayImage); //Operation 4................High Pass Image Conversion IplImage *highPassImage = cvCreateImage(cvGetSize(frame),IPL_DEPTH_8U,1); IPLHighPassFilter(grayImage,highPassImage); cvNamedWindow("High Pass Image",1); cvShowImage("High Pass Image",highPassImage); //Operation 3................Low Pass Filter Image Conversion IplImage *lowPassImage = cvCreateImage(cvGetSize(frame),IPL_DEPTH_8U,1); IPLLowPassFilter(grayImage,lowPassImage); cvNamedWindow("Low Pass Image",1); cvShowImage("Low Pass Image",lowPassImage); cvWaitKey(100); //Releaseing of Images if(grayImage!=NULL) cvReleaseImage(&grayImage); /* if(flipImage!=NULL) cvReleaseImage(&flipImage); */ if(lowPassImage!=NULL) cvReleaseImage(&lowPassImage); if(highPassImage!=NULL) cvReleaseImage(&highPassImage); } //Release the Memory if(frame!=NULL) cvReleaseImage(&frame); return 0; } //Function Definitions int isImageBlack(IplImage *srcImg,int width,int height) { int t,l; int countBlackPixel=0; uchar *srcData=(uchar*)srcImg->imageData; for(t=0;t<height;t++) { for(l=0;l<width;l++) { if(srcData[t*width*3 + l*3+0]==0 && srcData[t*width*3 + l*3+1]==0 && srcData[t*width*3 + l*3+2]==0) countBlackPixel++; } } if(countBlackPixel>(width*height/8)) return 1; //Black else return 0; //Normal Image } void IPLcvtColor(IplImage *inImage,IplImage *grayImage,int type) { int imgWidth=inImage->width; int imgHeight=inImage->height; int imgStep=grayImage->widthStep; uchar* srcData = (uchar *)inImage->imageData; uchar* dstData = (uchar *)grayImage->imageData; int i,j; if(type==0) { for(i=0;i<imgHeight;i++) { for(j=0;j<imgWidth;j++) { dstData[i*imgStep+j]=(uchar)(((srcData[i*inImage->widthStep+j*inImage->nChannels + 0])*0.299) +((srcData[i*inImage->widthStep+j*inImage->nChannels + 1])*0.587) +((srcData[i*inImage->widthStep+j*inImage->nChannels + 2])*0.114)); } } } } void IPLflip(IplImage *srcImage,IplImage *dstImage,int flip_mode) { int imgWidth=srcImage->width; int imgHeight=srcImage->height; uchar* srcData = (uchar *)srcImage->imageData; uchar* dstData = (uchar *)dstImage->imageData; int i,j; if(srcImage->nChannels==1) { if(flip_mode==0) { for(i=0;i<imgHeight;i++) { for(j=0;j<imgWidth;j++) { dstData[i*imgWidth+j]=srcData[(imgHeight-i-1)*imgWidth+j]; } } } if(flip_mode==1) { for(i=0;i<imgHeight;i++) { for(j=0;j<imgWidth;j++) { dstData[i*imgWidth+j]=srcData[i*imgWidth+(imgWidth-j-1)]; } } } if(flip_mode==2) { for(i=0;i<imgHeight;i++) { for(j=0;j<imgWidth;j++) { dstData[i*imgWidth+j]=srcData[(imgHeight-i-1)*imgWidth+(imgWidth-j-1)]; } } } } if(srcImage->nChannels==3) { if(flip_mode==0) { for(i=0;i<imgHeight;i++) { for(j=0;j<imgWidth;j++) { dstData[i*srcImage->widthStep+j*srcImage->nChannels + 0]=srcData[(imgHeight-i-1)*dstImage->widthStep+j*dstImage->nChannels + 0]; dstData[i*srcImage->widthStep+j*srcImage->nChannels + 1]=srcData[(imgHeight-i-1)*dstImage->widthStep+j*dstImage->nChannels + 1]; dstData[i*srcImage->widthStep+j*srcImage->nChannels + 2]=srcData[(imgHeight-i-1)*dstImage->widthStep+j*dstImage->nChannels + 2]; } } } if(flip_mode==1) { for(i=0;i<imgHeight;i++) { for(j=0;j<imgWidth;j++) { dstData[i*srcImage->widthStep+j*srcImage->nChannels + 0]=srcData[i*dstImage->widthStep+(imgWidth-j-1)*dstImage->nChannels + 0]; dstData[i*srcImage->widthStep+j*srcImage->nChannels + 1]=srcData[i*dstImage->widthStep+(imgWidth-j-1)*dstImage->nChannels + 1]; dstData[i*srcImage->widthStep+j*srcImage->nChannels + 2]=srcData[i*dstImage->widthStep+(imgWidth-j-1)*dstImage->nChannels + 2]; } } } if(flip_mode==2) { for(i=0;i<imgHeight;i++) { for(j=0;j<imgWidth;j++) { dstData[i*srcImage->widthStep+j*srcImage->nChannels + 0]=srcData[(imgHeight-i-1)*dstImage->widthStep+(imgWidth-j-1)*dstImage->nChannels + 0]; dstData[i*srcImage->widthStep+j*srcImage->nChannels + 1]=srcData[(imgHeight-i-1)*dstImage->widthStep+(imgWidth-j-1)*dstImage->nChannels + 1]; dstData[i*srcImage->widthStep+j*srcImage->nChannels + 2]=srcData[(imgHeight-i-1)*dstImage->widthStep+(imgWidth-j-1)*dstImage->nChannels + 2]; } } } } } void IPLLowPassFilter(IplImage *grayImage,IplImage* resultImage) { uchar* srcData = (uchar *)grayImage->imageData; uchar* dstData = (uchar *)resultImage->imageData; uchar grayValue; int imgWidth=grayImage->width; int imgHeight=grayImage->height; int i,j,k,l; double filterSum=0; int filterSize = 3; // sobel filter in Y direction double filter[3][3]={ {1, 1, 1}, {1, 1, 1}, {1, 1, 1}}; /*Sobel Filter*/ for(i = 1; i < imgWidth-1; i++) { for(j = 1; j < imgHeight-1; j++) { filterSum=0; for(k = 0; k < filterSize; k++) { for(l = 0; l < filterSize; l++) { int x = j - ((filterSize-1)>>1) + l; int y = i - ((filterSize-1)>>1) + k; grayValue = srcData[x*imgWidth + y]; filterSum += (double)(grayValue * (filter[k][l])); } } filterSum=filterSum/9; if(filterSum<0.0) filterSum=0; if(filterSum>255.0) filterSum=255; dstData[j*imgWidth+i]=(uchar)filterSum; } } } void IPLHighPassFilter(IplImage *grayImage,IplImage* resultImage) { uchar* srcData = (uchar *)grayImage->imageData; uchar* dstData = (uchar *)resultImage->imageData; uchar grayValue; int imgWidth=grayImage->width; int imgHeight=grayImage->height; int i,j,k,l; double filterSum=0; int filterSize = 3; double filter[3][3]={ {-1, -1, -1}, {-1, 9, -1}, {-1, -1, -1}}; for(i = 1; i < imgWidth-1; i++) { for(j = 1; j < imgHeight-1; j++) { filterSum=0; for(k = 0; k < filterSize; k++) { for(l = 0; l < filterSize; l++) { int x = j - ((filterSize-1)>>1) + l; int y = i - ((filterSize-1)>>1) + k; grayValue = srcData[x*imgWidth + y]; filterSum += (double)(grayValue * (filter[k][l])); } } filterSum=filterSum;