int main(){
PNG imageIn=PNG("in.png");
PNG imageOut= PNG(imageIn.width(), imageIn.height());
size_t width=imageIn.width();
size_t height=imageIn.height();
for(size_t x=0; x<imageIn.width(); x++){
for(size_t y=0; y<imageIn.height(); y++){
RGBAPixel * outp= imageIn(x,y);
imageOut(width-x-1,height-y-1)->red=outp->red;
imageOut(width-x-1,height-y-1)->blue=outp->blue;
imageOut(width-x-1,height-y-1)->green= outp->green;
}
}
imageOut.writeToFile("out.png");
return 0;
}
void CPUSkeletonize::perform(int type, int structElemV, Image3d *image) {
Image3d imageIn(image->getRows(), image->getCols(),
image->get3dMatImage().clone());
switch (type) {
case 0: {
checkA(image, imageIn, structElemV);
break;
}
case 1: {
checkB(image, imageIn, structElemV);
break;
}
case 2: {
checkC(image, imageIn, structElemV);
break;
}
case 3: {
checkD(image, imageIn, structElemV);
break;
}
}
imageIn.clear();
}
unsigned int cvLabel (IplImage const *img, IplImage *imgOut, CvBlobs &blobs)
{
CV_FUNCNAME("cvLabel");
__CV_BEGIN__;
{
CV_ASSERT(img&&(img->depth==IPL_DEPTH_8U)&&(img->nChannels==1));
CV_ASSERT(imgOut&&(imgOut->depth==IPL_DEPTH_LABEL)&&(imgOut->nChannels==1));
unsigned int numPixels=0;
cvSetZero(imgOut);
CvLabel label=0;
cvReleaseBlobs(blobs);
unsigned int stepIn = img->widthStep / (img->depth / 8);
unsigned int stepOut = imgOut->widthStep / (imgOut->depth / 8);
unsigned int imgIn_width = img->width;
unsigned int imgIn_height = img->height;
unsigned int imgIn_offset = 0;
unsigned int imgOut_width = imgOut->width;
unsigned int imgOut_height = imgOut->height;
unsigned int imgOut_offset = 0;
if(img->roi)
{
imgIn_width = img->roi->width;
imgIn_height = img->roi->height;
imgIn_offset = img->roi->xOffset + (img->roi->yOffset * stepIn);
}
if(imgOut->roi)
{
imgOut_width = imgOut->roi->width;
imgOut_height = imgOut->roi->height;
imgOut_offset = imgOut->roi->xOffset + (imgOut->roi->yOffset * stepOut);
}
unsigned char *imgDataIn = (unsigned char *)img->imageData + imgIn_offset;
CvLabel *imgDataOut = (CvLabel *)imgOut->imageData + imgOut_offset;
#define imageIn(X, Y) imgDataIn[(X) + (Y)*stepIn]
#define imageOut(X, Y) imgDataOut[(X) + (Y)*stepOut]
CvLabel lastLabel = 0;
CvBlob *lastBlob = NULL;
for (unsigned int y=0; y<imgIn_height; y++)
{
for (unsigned int x=0; x<imgIn_width; x++)
{
if (imageIn(x, y))
{
bool labeled = imageOut(x, y);
if ((!imageOut(x, y))&&((y==0)||(!imageIn(x, y-1))))
{
labeled = true;
// Label contour.
label++;
CV_ASSERT(label!=CV_BLOB_MAX_LABEL);
imageOut(x, y) = label;
numPixels++;
if (y>0)
imageOut(x, y-1) = CV_BLOB_MAX_LABEL;
CvBlob *blob = new CvBlob;
blob->label = label;
blob->area = 1;
blob->minx = x; blob->maxx = x;
blob->miny = y; blob->maxy = y;
blob->m10=x; blob->m01=y;
blob->m11=x*y;
blob->m20=x*x; blob->m02=y*y;
blob->internalContours.clear();
blobs.insert(CvLabelBlob(label,blob));
lastLabel = label;
lastBlob = blob;
blob->contour.startingPoint = cvPoint(x, y);
unsigned char direction=1;
unsigned int xx = x;
unsigned int yy = y;
bool contourEnd = false;
do
{
for (unsigned int numAttempts=0; numAttempts<3; numAttempts++)
{
bool found = false;
for (unsigned char i=0; i<3; i++)
{
int nx = xx+movesE[direction][i][0];
int ny = yy+movesE[direction][i][1];
if ((nx<imgIn_width)&&(nx>=0)&&(ny<imgIn_height)&&(ny>=0))
{
if (imageIn(nx, ny))
{
found = true;
blob->contour.chainCode.push_back(movesE[direction][i][3]);
xx=nx;
yy=ny;
direction=movesE[direction][i][2];
break;
}
else
{
imageOut(nx, ny) = CV_BLOB_MAX_LABEL;
}
}
}
if (!found)
direction=(direction+1)%4;
else
{
if (imageOut(xx, yy) != label)
{
imageOut(xx, yy) = label;
numPixels++;
if (xx<blob->minx) blob->minx = xx;
else if (xx>blob->maxx) blob->maxx = xx;
if (yy<blob->miny) blob->miny = yy;
else if (yy>blob->maxy) blob->maxy = yy;
blob->area++;
blob->m10+=xx; blob->m01+=yy;
blob->m11+=xx*yy;
blob->m20+=xx*xx; blob->m02+=yy*yy;
}
break;
}
if (contourEnd = ((xx==x) && (yy==y) && (direction==1)))
break;
}
}
while (!contourEnd);
}
if ((y+1<imgIn_height)&&(!imageIn(x, y+1))&&(!imageOut(x, y+1)))
{
labeled = true;
// Label internal contour
CvLabel l;
CvBlob *blob = NULL;
if (!imageOut(x, y))
{
l = imageOut(x-1, y);
imageOut(x, y) = l;
numPixels++;
if (l==lastLabel)
blob = lastBlob;
else
{
blob = blobs.find(l)->second;
lastLabel = l;
lastBlob = blob;
}
blob->area++;
blob->m10+=x; blob->m01+=y;
blob->m11+=x*y;
blob->m20+=x*x; blob->m02+=y*y;
}
else
{
l = imageOut(x, y);
if (l==lastLabel)
blob = lastBlob;
else
{
blob = blobs.find(l)->second;
lastLabel = l;
lastBlob = blob;
}
}
imageOut(x, y+1) = CV_BLOB_MAX_LABEL;
CvContourChainCode *contour = new CvContourChainCode;
contour->startingPoint = cvPoint(x, y);
unsigned char direction = 3;
unsigned int xx = x;
unsigned int yy = y;
do
{
for (unsigned int numAttempts=0; numAttempts<3; numAttempts++)
{
bool found = false;
for (unsigned char i=0; i<3; i++)
{
int nx = xx+movesI[direction][i][0];
int ny = yy+movesI[direction][i][1];
if (imageIn(nx, ny))
{
found = true;
contour->chainCode.push_back(movesI[direction][i][3]);
xx=nx;
yy=ny;
direction=movesI[direction][i][2];
break;
}
else
{
imageOut(nx, ny) = CV_BLOB_MAX_LABEL;
}
}
if (!found)
direction=(direction+1)%4;
else
{
if (!imageOut(xx, yy))
{
imageOut(xx, yy) = l;
numPixels++;
blob->area++;
blob->m10+=xx; blob->m01+=yy;
blob->m11+=xx*yy;
blob->m20+=xx*xx; blob->m02+=yy*yy;
}
break;
}
}
}
while (!(xx==x && yy==y));
blob->internalContours.push_back(contour);
}
if (!labeled)
{
CvLabel l = imageOut(x-1, y);
imageOut(x, y) = l;
numPixels++;
CvBlob *blob = NULL;
if (l==lastLabel)
blob = lastBlob;
else
{
blob = blobs.find(l)->second;
lastLabel = l;
lastBlob = blob;
}
blob->area++;
blob->m10+=x; blob->m01+=y;
blob->m11+=x*y;
blob->m20+=x*x; blob->m02+=y*y;
}
}
}
}
for (CvBlobs::iterator it=blobs.begin(); it!=blobs.end(); ++it)
{
cvCentroid((*it).second);
(*it).second->u11 = (*it).second->m11 - ((*it).second->m10*(*it).second->m01)/(*it).second->m00;
(*it).second->u20 = (*it).second->m20 - ((*it).second->m10*(*it).second->m10)/(*it).second->m00;
(*it).second->u02 = (*it).second->m02 - ((*it).second->m01*(*it).second->m01)/(*it).second->m00;
double m00_2 = (*it).second->m00 * (*it).second->m00;
(*it).second->n11 = (*it).second->u11 / m00_2;
(*it).second->n20 = (*it).second->u20 / m00_2;
(*it).second->n02 = (*it).second->u02 / m00_2;
(*it).second->p1 = (*it).second->n20 + (*it).second->n02;
double nn = (*it).second->n20 - (*it).second->n02;
(*it).second->p2 = nn*nn + 4.*((*it).second->n11*(*it).second->n11);
}
return numPixels;
}
__CV_END__;
}
