//--------------------------------------------------------------------------------
void ofxCvImage::warpIntoMe( ofxCvImage& mom, const ofPoint src[4], const ofPoint dst[4] ){
if( !bAllocated ){
ofLogError("ofxCvImage") << "warpIntoMe(): image not allocated";
return;
}
if( !mom.bAllocated ){
ofLogError("ofxCvImage") << "warpIntoMe(): source image not allocated";
return;
}
if( mom.getCvImage()->nChannels == cvImage->nChannels &&
mom.getCvImage()->depth == cvImage->depth ) {
// compute matrix for perspectival warping (homography)
CvPoint2D32f cvsrc[4];
CvPoint2D32f cvdst[4];
CvMat* translate = cvCreateMat( 3, 3, CV_32FC1 );
cvSetZero( translate );
for (int i = 0; i < 4; i++ ) {
cvsrc[i].x = src[i].x;
cvsrc[i].y = src[i].y;
cvdst[i].x = dst[i].x;
cvdst[i].y = dst[i].y;
}
cvGetPerspectiveTransform( cvsrc, cvdst, translate ); // calculate homography
cvWarpPerspective( mom.getCvImage(), cvImage, translate);
flagImageChanged();
cvReleaseMat( &translate );
} else {
ofLogError("ofxCvImage") << "warpIntoMe(): image type mismatch";
}
}
//--------------------------------------------------------------------------------
void ofxCvGrayscaleImage::scaleIntoMe( ofxCvImage& mom, int interpolationMethod ){
//for interpolation you can pass in:
//CV_INTER_NN - nearest-neigbor interpolation,
//CV_INTER_LINEAR - bilinear interpolation (used by default)
//CV_INTER_AREA - resampling using pixel area relation. It is preferred method
// for image decimation that gives moire-free results. In case of
// zooming it is similar to CV_INTER_NN method.
//CV_INTER_CUBIC - bicubic interpolation.
if( mom.getCvImage()->nChannels == cvImage->nChannels &&
mom.getCvImage()->depth == cvImage->depth ) {
if ((interpolationMethod != CV_INTER_NN) &&
(interpolationMethod != CV_INTER_LINEAR) &&
(interpolationMethod != CV_INTER_AREA) &&
(interpolationMethod != CV_INTER_CUBIC) ){
ofLog(OF_LOG_WARNING, "in scaleIntoMe, setting interpolationMethod to CV_INTER_NN");
interpolationMethod = CV_INTER_NN;
}
cvResize( mom.getCvImage(), cvImage, interpolationMethod );
flagImageChanged();
} else {
ofLog(OF_LOG_ERROR, "in scaleIntoMe: mom image type has to match");
}
}
void ofxCvBrightnessContrast::setBrightnessAndContrast(ofxCvImage& img, float brightnessAmount, float contrastAmount){
brightnessVal = MAX(-127, MIN(127, brightnessAmount));
contrastVal = MAX(-127, MIN(127, contrastAmount));
unsigned char data[ 256 ];
CvMat * matrix;
double delta, a, b;
matrix = cvCreateMatHeader( 1, 256, CV_8UC1 );
cvSetData( matrix, data, 0 );
if ( contrastVal>0 ) {
delta = (127.0f*contrastVal) / 128.0f;
a = 255.0f / ( 255.0f-(delta*2.0f) );
b = a * (brightnessVal-delta);
}
else {
delta = (-128.0f*contrastVal) / 128.0f;
a = ( 256.0f-(delta*2.0f) ) / 255.0f;
b = ( a*brightnessVal )+delta;
}
for( int i=0; i<256; i++ ) {
int value = cvRound( (a*i)+b );
data[i] = (unsigned char) min( max(0,value), 255 );
}
cvLUT( img.getCvImage(), img.getCvImage(), matrix );
cvReleaseMat( &matrix );
}
//--------------------------------------------------------------------------------
void ofxCvColorImage::scaleIntoMe( ofxCvImage& mom, int interpolationMethod ){
if( !bAllocated ){
ofLogError("ofxCvColorImage") << "resize(): image not allocated";
return;
}
if( !mom.bAllocated ){
ofLogError("ofxCvColorImage") << "resize(): source image not allocated";
return;
}
//for interpolation you can pass in:
//CV_INTER_NN - nearest-neigbor interpolation,
//CV_INTER_LINEAR - bilinear interpolation (used by default)
//CV_INTER_AREA - resampling using pixel area relation. It is preferred method
// for image decimation that gives moire-free results. In case of
// zooming it is similar to CV_INTER_NN method.
//CV_INTER_CUBIC - bicubic interpolation.
if( mom.getCvImage()->nChannels == cvImage->nChannels &&
mom.getCvImage()->depth == cvImage->depth ) {
if ((interpolationMethod != CV_INTER_NN) &&
(interpolationMethod != CV_INTER_LINEAR) &&
(interpolationMethod != CV_INTER_AREA) &&
(interpolationMethod != CV_INTER_CUBIC) ){
ofLogWarning("ofxCvColorImage") << "scaleIntoMe(): setting interpolationMethod to CV_INTER_NN";
interpolationMethod = CV_INTER_NN;
}
cvResize( mom.getCvImage(), cvImage, interpolationMethod );
flagImageChanged();
} else {
ofLogError("ofxCvColorImage") << "scaleIntoMe(): type mismatch with source image";
}
}
//--------------------------------------------------------------------------------
void ofxCvImage::warpIntoMe( ofxCvImage& mom, const ofPoint src[4], const ofPoint dst[4] ){
if( !bAllocated ){
ofLog(OF_LOG_ERROR, "in warpIntoMe, image not allocated");
return;
}
if( !mom.bAllocated ){
ofLog(OF_LOG_ERROR, "in warpIntoMe, mom not allocated");
return;
}
if( mom.getCvImage()->nChannels == cvImage->nChannels &&
mom.getCvImage()->depth == cvImage->depth ) {
// compute matrix for perspectival warping (homography)
CvPoint2D32f cvsrc[4];
CvPoint2D32f cvdst[4];
CvMat* translate = cvCreateMat( 3, 3, CV_32FC1 );
cvSetZero( translate );
for (int i = 0; i < 4; i++ ) {
cvsrc[i].x = src[i].x;
cvsrc[i].y = src[i].y;
cvdst[i].x = dst[i].x;
cvdst[i].y = dst[i].y;
}
cvWarpPerspectiveQMatrix( cvsrc, cvdst, translate ); // calculate homography
cvWarpPerspective( mom.getCvImage(), cvImage, translate);
flagImageChanged();
cvReleaseMat( &translate );
} else {
ofLog(OF_LOG_ERROR, "in warpIntoMe: mom image type has to match");
}
}
//--------------------------------------------------------------------------------
void ofxCvImage::operator &= ( ofxCvImage& mom ) {
if( !mom.bAllocated ){
ofLogError("ofxCvImage") << "operator&=: source image not allocated";
return;
}
if( !bAllocated ){
ofLogNotice("ofxCvImage") << "operator&=: allocating to match dimensions: "
<< mom.getWidth() << " " << mom.getHeight();
allocate(mom.getWidth(), mom.getHeight());
}
if( mom.getCvImage()->nChannels == cvImage->nChannels &&
mom.getCvImage()->depth == cvImage->depth )
{
if( matchingROI(getROI(), mom.getROI()) ) {
cvAnd( cvImage, mom.getCvImage(), cvImageTemp );
swapTemp();
flagImageChanged();
} else {
ofLogError("ofxCvImage") << "operator&=: region of interest mismatch";
}
} else {
ofLogError("ofxCvImage") << "operator&=: images need to have matching type";
}
}
//--------------------------------------------------------------------------------
void ofxCvImage::operator *= ( ofxCvImage& mom ) {
if( !mom.bAllocated ){
ofLogError("ofxCvImage") << "operator*=: mom needs to be allocated";
return;
}
if( !bAllocated ){
ofLogNotice("ofxCvImage") << "operator*=: allocating to match dimensions: "
<< mom.getWidth() << " " << mom.getHeight();
allocate(mom.getWidth(), mom.getHeight());
}
if( mom.getCvImage()->nChannels == cvImage->nChannels &&
mom.getCvImage()->depth == cvImage->depth )
{
if( matchingROI(getROI(), mom.getROI()) ) {
float scalef = 1.0f / 255.0f;
cvMul( cvImage, mom.getCvImage(), cvImageTemp, scalef );
swapTemp();
flagImageChanged();
} else {
ofLogError("ofxCvImage") << "operator*=: region of interest mismatch";
}
} else {
ofLogError("ofxCvImage") << "operator*=: images type mismatch";
}
}
//--------------------------------------------------------------------------------
void ofxCvImage::operator &= ( ofxCvImage& mom ) {
if( mom.getCvImage()->nChannels == cvImage->nChannels &&
mom.getCvImage()->depth == cvImage->depth )
{
if( matchingROI(getROI(), mom.getROI()) ) {
cvAnd( cvImage, mom.getCvImage(), cvImageTemp );
swapTemp();
flagImageChanged();
} else {
ofLog(OF_LOG_ERROR, "in &=, ROI mismatch");
}
} else {
ofLog(OF_LOG_ERROR, "in &=, images need to have matching type");
}
}
//--------------------------------------------------------------------------------
void ofxCvImage::operator *= ( ofxCvImage& mom ) {
if( mom.getCvImage()->nChannels == cvImage->nChannels &&
mom.getCvImage()->depth == cvImage->depth )
{
if( matchingROI(getROI(), mom.getROI()) ) {
float scalef = 1.0f / 255.0f;
cvMul( cvImage, mom.getCvImage(), cvImageTemp, scalef );
swapTemp();
flagImageChanged();
} else {
ofLog(OF_LOG_ERROR, "in *=, ROI mismatch");
}
} else {
ofLog(OF_LOG_ERROR, "in *=, images need to have matching type");
}
}
//--------------------------------------------------------------------------------
void ofxCvFloatImage::operator &= ( ofxCvImage& mom ) {
if( mom.getCvImage()->nChannels == cvImage->nChannels &&
mom.getCvImage()->depth == cvImage->depth )
{
if( matchingROI(getROI(), mom.getROI()) ) {
//this is doing it bit-wise; probably not what we want
cvAnd( cvImage, mom.getCvImage(), cvImageTemp );
swapTemp();
flagImageChanged();
} else {
ofLog(OF_LOG_ERROR, "in &=, ROI mismatch");
}
} else {
ofLog(OF_LOG_ERROR, "in &=, images need to have matching type");
}
}
//--------------------------------------------------------------------------------
void ofxCvFloatImage::operator *= ( ofxCvImage& mom ) {
if( mom.getCvImage()->nChannels == cvImage->nChannels &&
mom.getCvImage()->depth == cvImage->depth )
{
if( pushSetBothToTheirIntersectionROI(*this,mom) ) {
cvMul( cvImage, mom.getCvImage(), cvImageTemp );
swapTemp();
popROI(); //restore prevoius ROI
mom.popROI(); //restore prevoius ROI
flagImageChanged();
} else {
ofLog(OF_LOG_ERROR, "in *=, ROI mismatch");
}
} else {
ofLog(OF_LOG_ERROR, "in *=, images need to have matching type");
}
}
//--------------------------------------------------------------------------------
void ofxCvFloatImage::operator &= ( ofxCvImage& mom ) {
if( mom.getCvImage()->nChannels == cvImage->nChannels &&
mom.getCvImage()->depth == cvImage->depth )
{
if( pushSetBothToTheirIntersectionROI(*this,mom) ) {
//this is doing it bit-wise; probably not what we want
cvAnd( cvImage, mom.getCvImage(), cvImageTemp );
swapTemp();
popROI(); //restore prevoius ROI
mom.popROI(); //restore prevoius ROI
flagImageChanged();
} else {
ofLog(OF_LOG_ERROR, "in &=, ROI mismatch");
}
} else {
ofLog(OF_LOG_ERROR, "in &=, images need to have matching type");
}
}
//--------------------------------------------------------------------------------
void ofxCvImage::operator *= ( ofxCvImage& mom ) {
if( !mom.bAllocated ){
ofLog(OF_LOG_ERROR, "in *=, mom needs to be allocated");
return;
}
if( !bAllocated ){
ofLog(OF_LOG_NOTICE, "in *=, allocating to match dimensions");
allocate(mom.getWidth(), mom.getHeight());
}
if( mom.getCvImage()->nChannels == cvImage->nChannels &&
mom.getCvImage()->depth == cvImage->depth )
{
if( matchingROI(getROI(), mom.getROI()) ) {
float scalef = 1.0f / 255.0f;
cvMul( cvImage, mom.getCvImage(), cvImageTemp, scalef );
swapTemp();
flagImageChanged();
} else {
ofLog(OF_LOG_ERROR, "in *=, ROI mismatch");
}
} else {
ofLog(OF_LOG_ERROR, "in *=, images need to have matching type");
}
}
//--------------------------------------------------------------------------------
void ofxCvFloatImage::operator *= ( ofxCvImage& mom ) {
if( mom.getWidth() == 0 || mom.getHeight() == 0 ){
ofLog(OF_LOG_ERROR, "in *=, mom width or height is 0");
return;
}
if( !bAllocated ){
ofLog(OF_LOG_ERROR, "in *=, image is not allocated");
return;
}
if( mom.getCvImage()->nChannels == cvImage->nChannels && mom.getCvImage()->depth == cvImage->depth ){
if( matchingROI(getROI(), mom.getROI()) ) {
cvMul( cvImage, mom.getCvImage(), cvImageTemp );
swapTemp();
flagImageChanged();
} else {
ofLog(OF_LOG_ERROR, "in *=, ROI mismatch");
}
} else {
ofLog(OF_LOG_ERROR, "in *=, images need to have matching type");
}
}
//--------------------------------------------------------------------------------
void ofxCvFloatImage::operator &= ( ofxCvImage& mom ) {
if( mom.getWidth() == 0 || mom.getHeight() == 0 ){
ofLog(OF_LOG_ERROR, "in &=, mom width or height is 0");
return;
}
if( !bAllocated ){
ofLog(OF_LOG_ERROR, "in &=, image is not allocated");
return;
}
if( mom.getCvImage()->nChannels == cvImage->nChannels && mom.getCvImage()->depth == cvImage->depth ){
if( matchingROI(getROI(), mom.getROI()) ) {
//this is doing it bit-wise; probably not what we want
cvAnd( cvImage, mom.getCvImage(), cvImageTemp );
swapTemp();
flagImageChanged();
} else {
ofLog(OF_LOG_ERROR, "in &=, ROI mismatch");
}
} else {
ofLog(OF_LOG_ERROR, "in &=, images need to have matching type");
}
}
