void dfDisplacementMap::applyDisplaceMap(ofxCvColorImage& sourceImage,ofTexture& destTexture,float hscale=0.3, float vscale=0.3){
//apply displacement
unsigned char * displacePixels = this->getPixels();
unsigned char * pixels = sourceImage.getPixels();
int displace,hdisplace,vdisplace;
int totalPixels=height*width*3;
unsigned char * videoDisplaced = new unsigned char[totalPixels];
for (int i = 0; i < totalPixels;i+=3){
hdisplace = (int)((displacePixels[i] - 127)*hscale); //x coord
vdisplace = (int)((displacePixels[i+2] - 127) *vscale); //y coord
if( i%(320*3)+hdisplace*3 >0 && i%(320*3)+hdisplace*3<320*3){
displace=hdisplace+vdisplace*320;
}else{
displace = 0;
}
displace*= 3;
if(i+displace>0 && i+displace<totalPixels){
videoDisplaced[i] = pixels[i+displace];
videoDisplaced[i+1] = pixels[i+displace+1];
videoDisplaced[i+2] = pixels[i+displace+2];
}
}
destTexture.loadData(videoDisplaced,width,height, GL_RGB);
delete videoDisplaced;
}
void chromaKeyer::keyImage( ofxCvColorImage & src, ofxCvColorImage & dst, int w, int h )
{
// resize images if not at same size already
if( hsvImage.width != w || hsvImage.height != h)
{
hsvImage.allocate(w,h);
hueImg.allocate(w,h);
satImg.allocate(w,h);
valImg.allocate(w,h);
}
// convert src to hsv color space
hsvImage.setFromPixels(src.getPixels(),w,h);
hsvImage.convertRgbToHsv();
// extract the hsv channels to a grayscale image
hsvImage.convertToGrayscalePlanarImages(hueImg,satImg,valImg);
unsigned char * pixelsHue = hsvImage.getPixels();
//unsigned char * pixelsSat = satImg.getPixels();
unsigned char * dstMask = new unsigned char[w*h];
// loop through and compare
/*
if( pixelsHue[i] >= H-tH && pixelsHue[i] <= H+tH&&
pixelsSat[i] >= S-tS && pixelsSat[i] <= S+tS
){
*/
for( int i = 0; i < w*h; i++)
{
if( pixelsHue[i*3] >= H-tH && pixelsHue[i*3] <= H+tH&&
pixelsHue[i*3+1] >= S-tS && pixelsHue[i*3+1] <= S+tS
){
dstMask[i] = 0;
}else{
dstMask[i] = 255;
}
}
hueImg.setFromPixels(dstMask,w,h);
cvCopy( hsvImage.getCvImage(),dst.getCvImage(),hueImg.getCvImage());//,hueImg.getCvImage());
dst.flagImageChanged();
dst.convertHsvToRgb();
delete dstMask;
}
//---------------------------------------------------------------------------------
void videoBlob::set(ofxCvBlob myBlob, ofxCvColorImage myImage, ofxCvGrayscaleImage myMask){
memcpy(&blob, &myBlob, sizeof(ofxCvBlob));
// now, let's get the data in,
int w = blob.boundingRect.width;
int h = blob.boundingRect.height;
int imgw = myImage.width;
int imgh = myImage.height;
int imgx = blob.boundingRect.x;
int imgy = blob.boundingRect.y;
unsigned char * blobRGBA = new unsigned char [ w * h * 4 ];
unsigned char * colorPixels = myImage.getPixels();
unsigned char * grayPixels = myMask.getPixels();
for (int i = 0; i < w; i++){
for (int j = 0; j < h; j++){
int posTex = (j * w + i)*4;
int posGray = ((j+imgy)*imgw + (i + imgx));
int posCol = posGray * 3;
blobRGBA[posTex + 0] = colorPixels[posCol + 0];
blobRGBA[posTex + 1] = colorPixels[posCol + 1];
blobRGBA[posTex + 2] = colorPixels[posCol + 2];
blobRGBA[posTex + 3] = grayPixels[posGray];
}
}
// myTexture.clear();
// myTexture.allocate(w,h,GL_RGBA);
unsigned char * black = new unsigned char [ofNextPow2(w) * ofNextPow2(h) * 4];
memset(black, 0, ofNextPow2(w) * ofNextPow2(h) * 4);
// myTexture.loadData(black, ofNextPow2(w), ofNextPow2(h), GL_RGBA);
// myTexture.loadData(blobRGBA, w, h, GL_RGBA);
delete black;
delete blobRGBA;
pos.x = blob.centroid.x;
pos.y = blob.centroid.y;
scale = 1;
angle = 0;
}
void chromaKeyer::getColorFromScreen( int x, int y, int w, ofxCvColorImage & src)
{
// tried many different things here but it doesnt work... need to fix it
cout << " x " << x << " y " << y << endl;
if( x > src.width-1 || y > src.height-1 || x < 1 || y < 1 ) return;
//ofxCvColorImage temp;
//temp.allocate(src.width,src.height);
//temp = src;
unsigned char * pixels = src.getPixels();
int pix = x * w + y;
int r = pixels[ pix ];
int g = pixels[ pix + 1];
int b = pixels[ pix + 2];
setFromRGB( r, g, b);
}
void ofxOpticalFlowLK :: update ( ofxCvColorImage& source )
{
update( source.getPixels(), source.width, source.height, OF_IMAGE_COLOR );
}