colour hsl_colour::to_rgb(double aAlpha) const
{
double c = (1.0 - std::abs(2.0 * lightness() - 1.0)) * saturation();
double h2 = hue() / 60.0;
double x = c * (1.0 - std::abs(std::fmod(h2, 2.0) - 1.0));
double r, g, b;
if (hue() == undefined_hue())
r = g = b = 0.0;
else if (h2 >= 0.0 && h2 < 1.0)
r = c, g = x, b = 0.0;
else if (h2 >= 1.0 && h2 < 2.0)
r = x, g = c, b = 0.0;
else if (h2 >= 2.0 && h2 < 3.0)
r = 0.0, g = c, b = x;
else if (h2 >= 3.0 && h2 < 4.0)
r = 0.0, g = x, b = c;
else if (h2 >= 4.0 && h2 < 5.0)
r = x, g = 0.0, b = c;
else if (h2 >= 5.0 && h2 < 6.0)
r = c, g = 0.0, b = x;
else
r = g = b = 0.0;
double m = lightness() - 0.5f * c;
colour result(
static_cast<colour::component>(std::floor((r + m) * 255.0)),
static_cast<colour::component>(std::floor((g + m) * 255.0)),
static_cast<colour::component>(std::floor((b + m) * 255.0)),
static_cast<colour::component>(std::floor(aAlpha * 255.0)));
return result;
}
/**
* @brief Is Camshift Tracker updated or not?
* @param img
* @param obj
* @param hist
* @return bool, whether Camshift tracker has been updated or not
*/
bool CTrackingAlgs::CamshiftUpdateTracker( const cv::Mat& img,
const cv::Rect& obj,
cv::MatND& hist)
{
cv::Mat hsv, hue, mask, backproject;
cv::cvtColor( img, hsv, CV_BGR2HSV );
int _vmin = CTrackingAlgs::vmin, _vmax = CTrackingAlgs::vmax;
cv::inRange( hsv, cv::Scalar(0,CTrackingAlgs::smin,MIN(_vmin,_vmax),0),
cv::Scalar(180,256,MAX(_vmin,_vmax),0), mask );
std::vector<cv::Mat> vhsv(3);
cv::split( hsv, vhsv );
vhsv[0].copyTo(hue);
double max_val = 0.f;
cv::Mat roi = hue( cv::Range(obj.y, obj.y+obj.height),
cv::Range(obj.x, obj.x+obj.width) );
cv::Mat roi_mask= mask( cv::Range(obj.y, obj.y+obj.height),
cv::Range(obj.x, obj.x+obj.width) );
cv::calcHist( &roi, 1, CTrackingAlgs::channels, roi_mask,
hist, 1, CTrackingAlgs::histSize, CTrackingAlgs::ranges,
true, // the histogram is uniform
false );
cv::minMaxLoc(hist, 0, &max_val, 0, 0);
hist.convertTo(hist, hist.type(), (max_val ? 255. / max_val : 0.), 0);
return true;
}
Mat PlateLines::customGrayscaleConversion(Mat src)
{
Mat img_hsv;
cvtColor(src,img_hsv,CV_BGR2HSV);
Mat grayscale = Mat(img_hsv.size(), CV_8U );
Mat hue(img_hsv.size(), CV_8U );
for (int row = 0; row < img_hsv.rows; row++)
{
for (int col = 0; col < img_hsv.cols; col++)
{
int h = (int) img_hsv.at<Vec3b>(row, col)[0];
//int s = (int) img_hsv.at<Vec3b>(row, col)[1];
int v = (int) img_hsv.at<Vec3b>(row, col)[2];
int pixval = pow(v, 1.05);
if (pixval > 255)
pixval = 255;
grayscale.at<uchar>(row, col) = pixval;
hue.at<uchar>(row, col) = h * (255.0 / 180.0);
}
}
//displayImage(config, "Hue", hue);
return grayscale;
}
void hue(huevec& out, int amount, int level)
{
if (level <= 1) {
if (long(out.size()) < amount)
out.push_back(0.0);
if (long(out.size()) < amount)
out.push_back(0.5);
} else {
hue(out, amount, level - 1);
const int lower = out.size();
hue(out, amount, level - 1);
const int upper = out.size();
for (int i = lower; i < upper; ++i)
out.at(i) += 1.0 / (1 << level);
}
}
void Weather::Draw()
{
if(IsPointerNull((void*)engine_m,"Weather::Draw()"))
return;
if(!running_m)
return;
// Draw a hue
sf::Color col;
if(current_weather_type_m == W_RAIN)
col = sf::Color::Blue;
else if(current_weather_type_m == W_SAND)
col = sf::Color::Yellow;
else if(current_weather_type_m == W_SNOW)
col = sf::Color::White;
col.a = 40;
sf::RectangleShape hue(sf::Vector2f(640, 480));
hue.setFillColor(col);
engine_m->sfml_window_m.draw(hue);
for(unsigned int p=0; p<particle_count_m; p++)
{
particles_m[p].Draw(engine_m);
}
}
int QgsColorWidget::componentValue( const QgsColorWidget::ColorComponent component ) const
{
if ( !mCurrentColor.isValid() )
{
return -1;
}
switch ( component )
{
case QgsColorWidget::Red:
return mCurrentColor.red();
case QgsColorWidget::Green:
return mCurrentColor.green();
case QgsColorWidget::Blue:
return mCurrentColor.blue();
case QgsColorWidget::Hue:
//hue is treated specially, to avoid -1 hues values from QColor for ambiguous hues
return hue();
case QgsColorWidget::Saturation:
return mCurrentColor.hsvSaturation();
case QgsColorWidget::Value:
return mCurrentColor.value();
case QgsColorWidget::Alpha:
return mCurrentColor.alpha();
default:
return -1;
}
}
colour hsv_colour::to_rgb() const
{
double c = value() * saturation();
double h2 = hue() / 60.0;
double x = c * (1.0 - std::abs(std::fmod(h2, 2.0) - 1.0));
double r, g, b;
if (h2 >= 0.0 && h2 < 1.0)
r = c, g = x, b = 0.0;
else if (h2 >= 1.0 && h2 < 2.0)
r = x, g = c, b = 0.0;
else if (h2 >= 2.0 && h2 < 3.0)
r = 0.0, g = c, b = x;
else if (h2 >= 3.0 && h2 < 4.0)
r = 0.0, g = x, b = c;
else if (h2 >= 4.0 && h2 < 5.0)
r = x, g = 0.0, b = c;
else if (h2 >= 5.0 && h2 < 6.0)
r = c, g = 0.0, b = x;
else
r = g = b = 0.0;
double m = value() - c;
colour result(
static_cast<colour::component>(std::floor((r + m) * 255.0)),
static_cast<colour::component>(std::floor((g + m) * 255.0)),
static_cast<colour::component>(std::floor((b + m) * 255.0)),
static_cast<colour::component>(std::floor(alpha() * 255.0)));
return result;
}
void QgsColorBox::setColor( const QColor &color, const bool emitSignals )
{
//check if we need to redraw the box image
if ( mComponent == QgsColorWidget::Red && mCurrentColor.red() != color.red() )
{
mDirty = true;
}
else if ( mComponent == QgsColorWidget::Green && mCurrentColor.green() != color.green() )
{
mDirty = true;
}
else if ( mComponent == QgsColorWidget::Blue && mCurrentColor.blue() != color.blue() )
{
mDirty = true;
}
else if ( mComponent == QgsColorWidget::Hue && color.hsvHue() >= 0 && hue() != color.hsvHue() )
{
mDirty = true;
}
else if ( mComponent == QgsColorWidget::Saturation && mCurrentColor.hsvSaturation() != color.hsvSaturation() )
{
mDirty = true;
}
else if ( mComponent == QgsColorWidget::Value && mCurrentColor.value() != color.value() )
{
mDirty = true;
}
QgsColorWidget::setColor( color, emitSignals );
}
void FaceClassifier::nonZeroHueSaturationStatistics(cv::Mat face, FaceData &data) {
/* Calculates the average hue and saturation of the face's skin, ignoring
* all zeroed pixels while doing this. This is necessary because the mask
* we applied zeroed all non-face pixels.
*/
//split the HSV face image in its 3 channels
cv::vector<cv::Mat> faceChannels;
cv::split(face, faceChannels);
acc::accumulator_set< double, acc::stats<acc::tag::variance> > hue; //accumulates hue
acc::accumulator_set< double, acc::stats<acc::tag::variance> > sat; //accumulates saturation
acc::accumulator_set< double, acc::stats<acc::tag::variance> > val; //accumulates value
/*
acc::accumulator_set< double, acc::stats<acc::tag::variance> > blue; //accumulates blue
acc::accumulator_set< double, acc::stats<acc::tag::variance> > green; //accumulates green
acc::accumulator_set< double, acc::stats<acc::tag::variance> > red; //accumulates red
*/
double pixelAreaRatio = 0;
{
int validPixelCount = 0;
const int nRows = face.rows;
const int nCols = face.cols;
for( int i = 0; i < nRows; ++i) {
uchar* p_h = faceChannels[0].ptr<uchar>(i);
uchar* p_s = faceChannels[1].ptr<uchar>(i);
uchar* p_v = faceChannels[2].ptr<uchar>(i);
for ( int j = 0; j < nCols; ++j) {
if ( p_h[j] ) hue( p_h[j] );
if ( p_s[j] ) sat( p_s[j] );
if ( p_v[j] ) val( p_v[j] );
if ( p_h[j] ) validPixelCount++;
}
}
pixelAreaRatio = (double)validPixelCount / (double)(nRows * nCols);
}
//only if the face is "made of" non black pixels we have a face
if (pixelAreaRatio >= 0.5) {
data.skinHueMean = acc::mean(hue);
data.skinHueVariance = acc::variance(hue);
data.skinSaturationMean = acc::mean(sat);
data.skinSaturationVariance = acc::variance(sat);
data.skinValueMean = acc::mean(val);
data.skinValueVariance = acc::variance(val);
} else {
data.faceCount = 0;
data.skinHueMean = 0;
data.skinHueVariance = 0;
data.skinSaturationMean = 0;
data.skinSaturationVariance = 0;
data.skinValueMean = 0;
data.skinValueVariance = 0;
}
}
/*!
\ingroup group_imgproc_histogram
Adjust the contrast of a color image by performing an histogram equalization.
The intensity distribution is redistributed over the full [0 - 255] range such as the cumulative histogram
distribution becomes linear. The alpha channel is ignored / copied from the source alpha channel.
\param I : The color image to apply histogram equalization.
\param useHSV : If true, the histogram equalization is performed on the value channel (in HSV space), otherwise
the histogram equalization is performed independently on the RGB channels.
*/
void vp::equalizeHistogram(vpImage<vpRGBa> &I, const bool useHSV) {
if(I.getWidth()*I.getHeight() == 0) {
return;
}
if(!useHSV) {
//Split the RGBa image into 4 images
vpImage<unsigned char> pR(I.getHeight(), I.getWidth());
vpImage<unsigned char> pG(I.getHeight(), I.getWidth());
vpImage<unsigned char> pB(I.getHeight(), I.getWidth());
vpImage<unsigned char> pa(I.getHeight(), I.getWidth());
vpImageConvert::split(I, &pR, &pG, &pB, &pa);
//Apply histogram equalization for each channel
vp::equalizeHistogram(pR);
vp::equalizeHistogram(pG);
vp::equalizeHistogram(pB);
//Merge the result in I
unsigned int size = I.getWidth()*I.getHeight();
unsigned char *ptrStart = (unsigned char*) I.bitmap;
unsigned char *ptrEnd = ptrStart + size*4;
unsigned char *ptrCurrent = ptrStart;
unsigned int cpt = 0;
while(ptrCurrent != ptrEnd) {
*ptrCurrent = pR.bitmap[cpt];
++ptrCurrent;
*ptrCurrent = pG.bitmap[cpt];
++ptrCurrent;
*ptrCurrent = pB.bitmap[cpt];
++ptrCurrent;
*ptrCurrent = pa.bitmap[cpt];
++ptrCurrent;
cpt++;
}
} else {
vpImage<unsigned char> hue(I.getHeight(), I.getWidth());
vpImage<unsigned char> saturation(I.getHeight(), I.getWidth());
vpImage<unsigned char> value(I.getHeight(), I.getWidth());
unsigned int size = I.getWidth()*I.getHeight();
//Convert from RGBa to HSV
vpImageConvert::RGBaToHSV((unsigned char *) I.bitmap, (unsigned char *) hue.bitmap,
(unsigned char *) saturation.bitmap, (unsigned char *) value.bitmap, size);
//Histogram equalization on the value plane
vp::equalizeHistogram(value);
//Convert from HSV to RGBa
vpImageConvert::HSVToRGBa((unsigned char*) hue.bitmap, (unsigned char*) saturation.bitmap,
(unsigned char*) value.bitmap, (unsigned char*) I.bitmap, size);
}
}
void hue(huevec& out, int amount)
{
int level = 0;
while ((1 << level) < amount) ++level;
out.reserve(amount);
hue(out, amount, level);
}
bool hsv_colour::operator==(const hsv_colour& aOther) const
{
return hue() == aOther.hue() &&
saturation() == aOther.saturation() &&
value() == aOther.value() &&
alpha() == aOther.alpha() &&
hue_undefined() == aOther.hue_undefined();
}
void KHueSaturationSelector::drawPalette( QPixmap *pixmap )
{
int xSize = contentsRect().width(), ySize = contentsRect().height();
QImage image( QSize( xSize, ySize ), QImage::Format_RGB32 );
QColor col;
int h, s;
uint *p;
col.setHsv( hue(), saturation(), colorValue() );
int _h, _s, _v, _r, _g, _b;
col.getHsv( &_h, &_s, &_v );
col.getRgb( &_r, &_g, &_b );
for ( s = ySize-1; s >= 0; s-- )
{
p = ( uint * ) image.scanLine( ySize - s - 1 );
for( h = 0; h < xSize; h++ )
{
switch ( chooserMode() ) {
case ChooserClassic:
default:
col.setHsv( 359 * h / ( xSize - 1 ), 255 * s / ( ( ySize == 1 ) ? 1 : ySize - 1 ), 192 );
break;
case ChooserHue:
col.setHsv( _h, 255 * h / ( xSize - 1 ), 255 * s / ( ( ySize == 1 ) ? 1 : ySize - 1 ) );
break;
case ChooserSaturation:
col.setHsv( 359 * h / ( xSize - 1 ), _s, 255 * s / ( ( ySize == 1 ) ? 1 : ySize - 1 ) );
break;
case ChooserValue:
col.setHsv( 359 * h / ( xSize - 1 ), 255 * s / ( ( ySize == 1 ) ? 1 : ySize - 1 ), _v );
break;
case ChooserRed:
col.setRgb( _r, 255 * h / ( xSize - 1 ), 255 * s / ( ( ySize == 1 ) ? 1 : ySize - 1 ) );
break;
case ChooserGreen:
col.setRgb( 255 * h / ( xSize - 1 ), _g, 255 * s / ( ( ySize == 1 ) ? 1 : ySize - 1 ) );
break;
case ChooserBlue:
col.setRgb( 255 * s / ( ( ySize == 1 ) ? 1 : ySize - 1 ), 255 * h / ( xSize - 1 ), _b );
break;
}
*p = col.rgb();
p++;
}
}
/*
if ( pixmap->depth() <= 8 )
{
const QVector<QColor> standardPalette = kdeui_standardPalette();
KImageEffect::dither( image, standardPalette.data(), standardPalette.size() );
}
*/
*pixmap = QPixmap::fromImage( image );
}
uint8_t DIA_getHue(hue *param, ADM_coreVideoFilter *in)
{
diaElemFloat hue(&(param->hue),QT_TRANSLATE_NOOP("hue","Hue :"),-180,180);
diaElemFloat sat(&(param->saturation),QT_TRANSLATE_NOOP("hue","Sat :"),-180,180);
diaElem *elems[]={&hue,&sat};
return diaFactoryRun("Hue",sizeof(elems)/sizeof(diaElem *),elems);
}
// from http://www.cs.rit.edu/~ncs/color/t_convert.html
FColor HSB::hsbToRgb(const FColor& hsb) {
auto h = hue(hsb), s = saturation(hsb), b = brightness(hsb);
float red, green, blue;
if (s == 0) {
// achromatic (grey)
red = green = blue = b;
} else {
h *= 6; // sector 0 to 5
int i = floor(h);
auto f = h - i; // factorial part of h
auto p = b * (1 - s);
auto q = b * (1 - s * f);
auto t = b * (1 - s * (1 - f));
switch(i) {
case 0:
red = b;
green = t;
blue = p;
break;
case 1:
red = q;
green = b;
blue = p;
break;
case 2:
red = p;
green = b;
blue = t;
break;
case 3:
red = p;
green = q;
blue = b;
break;
case 4:
red = t;
green = p;
blue = b;
break;
case 5:
default:
red = b;
green = p;
blue = q;
break;
}
}
return FColor(red, green, blue, hsb.alpha());
}
void QgsColorWheel::setColor( const QColor &color, const bool emitSignals )
{
if ( color.hue() >= 0 && color.hue() != hue() )
{
//hue has changed, need to redraw the triangle
mTriangleDirty = true;
}
QgsColorWidget::setColor( color, emitSignals );
}
void ColorBox::setCurrent(int x, int y)
{
QColor newColor;
x = clamp(x, 0, 120);
y = clamp(y, 0, 120);
int oldAlpha = m_color.alpha();
newColor.setHsv(hue(), (x*255) / 120, 255 - (y*255) / 120);
newColor.setAlpha(oldAlpha);
setColor(newColor);
}
void ColorBox::paintEvent(QPaintEvent *event)
{
QWidget::paintEvent(event);
QPainter p(this);
if ((m_color.saturation()>1) && (m_color.value()>1))
m_saturatedColor.setHsv(m_color.hsvHue(),255,255);
if ((hue() != m_lastHue) || (m_cache.isNull())) {
m_lastHue = hue();
int fixedHue = clamp(m_lastHue, 0, 359);
QImage cache = QImage(120, 120, QImage::Format_RGB32);
int height = 120;
int width = 120;
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
QColor c;
c.setHsv(fixedHue, (x*255) / width, 255 - (y*255) / height);
cache.setPixel(x, y, c.rgb());
}
}
m_cache = QPixmap::fromImage(cache);
}
p.drawPixmap(5, 5, m_cache);
int x = clamp(m_color.hsvSaturationF() * 120, 0, 119) + 5;
int y = clamp(120 - m_color.valueF() * 120, 0, 119) + 5;
p.setPen(QColor(255, 255, 255, 50));
p.drawLine(5, y, x-1, y);
p.drawLine(x+1, y, width()-7, y);
p.drawLine(x, 5, x, y-1);
p.drawLine(x, y+1, x, height()-7);
}
QColor IconColors::dominantColor() const
{
const QImage img = m_icon.pixmap({32, 32}).toImage();
if(img.isNull()) {
qWarning() << "wrong icon" << m_icon << m_icon.name();
return QColor(Qt::black);
}
const int tolerance = 10;
QVector<uint> hue(360/tolerance, 0);
#ifdef OUTPUT_PIXMAP_DEBUG
QImage thing(img.size()+QSize(0,1), QImage::Format_ARGB32);
thing.fill(Qt::white);
#endif
for (int w=0, cw=img.width(); w<cw; ++w) {
for (int h=0, ch=img.height(); h<ch; ++h) {
#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
const QColor c = img.pixelColor(w, h).toHsv();
#else
const QColor c(img.pixel(w, h));
#endif
if (c.value()>150 && c.saturation()>20 && c.hue()>=0 && c.alpha()>200) {
hue[c.hue()/tolerance]++;
#ifdef OUTPUT_PIXMAP_DEBUG
// qDebug() << "adopting" << w << "x" << h << c.name() << c.hue();
// thing.setPixelColor(w, h, c);
thing.setPixelColor(w, h, QColor::fromHsv(tolerance*(c.hue()/tolerance), 220, 220));
#endif
}
}
}
uint dominantHue = 0, biggestAmount = 0;
for(int i=0; i<hue.size(); ++i) {
if (hue[i]>biggestAmount) {
biggestAmount = hue[i];
dominantHue = i;
}
}
QColor ret = QColor::fromHsv((dominantHue*tolerance + tolerance/2) % 360, 255, 255);
#ifdef OUTPUT_PIXMAP_DEBUG
qDebug() << "dominant" << dominantHue << hue[dominantHue] << "~=" << ((100*hue[dominantHue])/(img.width()*img.height())) << "% " << iconName();
thing.setPixelColor(0, img.height(), ret);
thing.save("/tmp/"+iconName()+".png");
#endif
return ret;
}
void RainbowMode::step(Adafruit_NeoPixel* pixels) {
if (rainbowState < 0) {
rainbowState = 256*5;
}
for(int i=0; i< NUMPIXELS; i++) {
uint32_t color = hue(((i * 256 / NUMPIXELS) + rainbowState) & 255);
pixels->setPixelColor(i, color);
}
rainbowState--;
}
std::vector<wxColour>& GetBigFixColoursPalette( int numteams )
{
static std::vector<wxColour> result;
wxLogDebugFunc( TowxString(numteams) );
huevec huevector;
static int satvalbifurcatepos;
static std::vector<double> satvalsplittings;
if ( satvalsplittings.empty() ) // insert ranges to bifurcate
{
satvalsplittings.push_back( 1 );
satvalsplittings.push_back( 0 );
satvalbifurcatepos = 0;
}
hue( huevector, numteams );
int bisectionlimit = 20;
for ( int i = result.size(); i < numteams; i++ )
{
double hue = huevector[i];
double saturation = 1;
double value = 1;
int switccolors = i % 3; // why only 3 and not all combinations? because it's easy, plus the bisection limit cannot be divided integer by it
if ( ( i % bisectionlimit ) == 0 )
{
satvalbifurcatepos = satvalbifurcatepos % ( satvalsplittings.size() -1 );
std::vector<double>::iterator toinsert = satvalsplittings.begin() + satvalbifurcatepos + 1;
satvalsplittings.insert( toinsert, ( satvalsplittings[satvalbifurcatepos] - satvalsplittings[satvalbifurcatepos + 1] ) / 2 + satvalsplittings[satvalbifurcatepos + 1] );
satvalbifurcatepos += 2;
}
if ( switccolors == 1 )
{
saturation = satvalsplittings[satvalbifurcatepos -1];
}
else if ( switccolors == 2 )
{
value = satvalsplittings[satvalbifurcatepos -1];
}
hue += 0.17; // use as starting point a zone where color band is narrow so that small variations means high change in visual effect
if ( hue > 1 ) hue-= 1;
wxImage::HSVValue hsvcolor( hue, saturation, value );
wxImage::RGBValue rgbvalue = wxImage::HSVtoRGB( hsvcolor );
wxColour col( rgbvalue.red, rgbvalue.green, rgbvalue.blue );
result.push_back( col );
}
return result;
}
void updateHSX() override {
float r = qBound(0.0f, rgb(0), 1.0f);
float g = qBound(0.0f, rgb(1), 1.0f);
float b = qBound(0.0f, rgb(2), 1.0f);
float h = ::getHue(r, g, b);
float x = ::getLightness<HSXType>(r, g, b);
KisColor::VecRGB hue(0.0, 0.0, 0.0);
::getRGB(hue(0), hue(1), hue(2), h);
::setLightness<HSXType>(hue(0), hue(1), hue(2), x);
KisColor::VecRGB diff1 = hue - KisColor::VecRGB(x,x,x);
KisColor::VecRGB diff2 = rgb - KisColor::VecRGB(x,x,x);
hsx(0) = h;
hsx(1) = diff1.dot(diff2) / diff1.squaredNorm(); // project rgb onto (VecRGB(x,x,x) - hue)
hsx(2) = x;
}
void ItemPinned::paintEvent(QPaintEvent *paintEvent)
{
const auto *parent = parentWidget();
auto color = parent->palette().color(QPalette::Background);
const int lightThreshold = 100;
const bool menuBackgrounIsLight = color.lightness() > lightThreshold;
color.setHsl(
color.hue(),
color.saturation(),
qMax(0, qMin(255, color.lightness() + (menuBackgrounIsLight ? -200 : 50)))
);
QPainter painter(this);
const int border = pointsToPixels(6);
const QRect rect(width() - border, 0, width(), height());
painter.setOpacity(0.15);
painter.fillRect(rect, color);
QWidget::paintEvent(paintEvent);
}
void BandwidthGui::handleClickedLegend(QCPLegend *legend, QCPAbstractLegendItem *item, QMouseEvent *event)
{
QCPPlottableLegendItem* graphItem = dynamic_cast<QCPPlottableLegendItem*>(item);
if(!graphItem)
return;
auto color = graphItem->plottable()->brush().color();
auto hue = color.hue() + 180 % 360;
auto sat = color.saturation();
auto val = color.value();
if(sat == BRUSH_SATURATION)
{
sat = 255;
val = 255;
}
else
{
sat = BRUSH_SATURATION;
val = BRUSH_VALUE;
}
color.setHsv(hue, sat, val);
graphItem->plottable()->setBrush(QBrush(color));
}
//------------------------------------------------------------------------------
// serialize() -- print the value of this object to the output stream sout.
//------------------------------------------------------------------------------
std::ostream& Hsv::serialize(std::ostream& sout, const int i, const bool slotsOnly) const
{
int j = 0;
if ( !slotsOnly ) {
sout << "( " << getFactoryName() << std::endl;
j = 4;
}
indent(sout,i+j);
sout << "hue: " << hue() << std::endl;
indent(sout,i+j);
sout << "saturation: " << saturation() << std::endl;
indent(sout,i+j);
sout << "value: " << value() << std::endl;
if ( !slotsOnly ) {
indent(sout,i);
sout << ")" << std::endl;
}
return sout;
}
cv::Mat VisionTask::generateHueMap(cv::Mat rgb)
{
cv::Mat hue(height, width, CV_16SC1);
for (int i = 0; i < height*width; i++)
{
unsigned char* rgb_data = (unsigned char*)rgb.data + i*3;
int16_t* hue_data = (int16_t*)hue.data + i*3;
unsigned char r = rgb_data[2];
unsigned char g = rgb_data[1];
unsigned char b = rgb_data[0];
if (r == g && g == b)
{
*hue_data = -1;
}
if (r >= b)
{
if (r >= g)
{
if (g >= b)
{
// red-yellow
*hue_data = 60*(g-b)/(r-b);
}
else
{
// magenta-red
*hue_data = 360 - 60*(b-g)/(r-g);
}
}
else
{
// yellow-green
*hue_data = 120 - 60*(r-b)/(g-b);
}
}
else
{
if (b >= g)
{
if (g >= r)
{
// cyan-blue
*hue_data = 240 - 60*(g-r)/(b-r);
}
else
{
// blue-magenta
*hue_data = 240 + 60*(r-g)/(b-g);
}
}
else
{
// green-cyan
*hue_data = 120 + 60*(b-r)/(g-r);
}
}
}
return hue;
}
JNIEXPORT void JNICALL Java_com_lightcrafts_jai_opimage_ColorSelectionMaskOpImage_nativeUshortLoop
(JNIEnv *env, jobject cls, jshortArray jsrcData, jbyteArray jdstData,
jint width, jint height, jintArray jsrcBandOffsets,
jint dstOffset, jint srcLineStride, jint dstLineStride,
jfloatArray jcolorSelection, jfloat wr, jfloat wg, jfloat wb)
{
ushort *srcData = (ushort *) env->GetPrimitiveArrayCritical(jsrcData, 0);
byte *dstData = (byte *) env->GetPrimitiveArrayCritical(jdstData, 0);
int *srcBandOffsets = (int *) env->GetPrimitiveArrayCritical(jsrcBandOffsets, 0);
float *colorSelection = (float *) env->GetPrimitiveArrayCritical(jcolorSelection, 0);
int srcROffset = srcBandOffsets[0];
int srcGOffset = srcBandOffsets[1];
int srcBOffset = srcBandOffsets[2];
float hueLower = colorSelection[0];
float hueLowerFeather = colorSelection[1];
float hueUpper = colorSelection[2];
float hueUpperFeather = colorSelection[3];
float luminosityLower = colorSelection[4];
float luminosityLowerFeather = colorSelection[5];
float luminosityUpper = colorSelection[6];
float luminosityUpperFeather = colorSelection[7];
int hueOffset = 0;
if (hueLower < 0 || hueLower - hueLowerFeather < 0 || hueUpper < 0) {
hueLower += 1;
hueUpper += 1;
hueOffset = 1;
} else if (hueLower > 1 || hueUpper + hueUpperFeather > 1 || hueUpper > 1) {
hueOffset = -1;
}
for (int row = 0; row < height; row++) {
for (int col = 0; col < width; col++) {
float r = srcData[3 * col + row * srcLineStride + srcROffset];
float g = srcData[3 * col + row * srcLineStride + srcGOffset];
float b = srcData[3 * col + row * srcLineStride + srcBOffset];
// float hue = hue(r / (float) 0xffff, g / (float) 0xffff, b / (float) 0xffff) / (float) (2 * Math.PI);
float cmax = (r > g) ? r : g;
if (b > cmax) cmax = b;
float cmin = (r < g) ? r : g;
if (b < cmin) cmin = b;
float saturation;
if (cmax != 0)
saturation = (cmax - cmin) / cmax;
else
saturation = 0;
#if defined(__ppc__)
float luminosity = (float) (log1pf((wr * r + wg * g + wb * b)/0x100) / (8 * logf(2)));
#else
float luminosity = (float) (fast_log2((wr * r + wg * g + wb * b)/0x100) / 8);
#endif
float luminosityMask, colorMask;
const float stmin = 0.01f;
const float stmax = 0.02f;
const float ltmin = .01;
const float ltmax = .02;
if (saturation > stmin && luminosity > ltmin) {
float h = hue(r, g, b) / (float) (2 * M_PI);
if (hueOffset == 1 && h < hueLower - hueLowerFeather)
h += 1;
else if (hueOffset == -1 && h < 0.5)
h += 1;
if (h >= hueLower && h <= hueUpper)
colorMask = 1;
else if (h >= (hueLower - hueLowerFeather) && h < hueLower)
colorMask = (h - (hueLower - hueLowerFeather))/hueLowerFeather;
else if (h > hueUpper && h <= (hueUpper + hueUpperFeather))
colorMask = (hueUpper + hueUpperFeather - h)/hueUpperFeather;
else
colorMask = 0;
if (saturation < stmax)
colorMask *= (saturation - stmin) / (stmax - stmin);
if (luminosity < ltmax)
colorMask *= (luminosity - ltmin) / (ltmax - ltmin);
} else
colorMask = 0;
if (luminosity >= luminosityLower && luminosity <= luminosityUpper)
luminosityMask = 1;
else if (luminosity >= (luminosityLower - luminosityLowerFeather) && luminosity < luminosityLower)
luminosityMask = (luminosity - (luminosityLower - luminosityLowerFeather))/luminosityLowerFeather;
else if (luminosity > luminosityUpper && luminosity <= (luminosityUpper + luminosityUpperFeather))
luminosityMask = (luminosityUpper + luminosityUpperFeather - luminosity)/luminosityUpperFeather;
else
luminosityMask = 0;
colorMask *= luminosityMask;
dstData[col + row * dstLineStride + dstOffset] = (byte) (0xff * colorMask);
}
}
env->ReleasePrimitiveArrayCritical(jsrcData, srcData, 0);
env->ReleasePrimitiveArrayCritical(jdstData, dstData, 0);
env->ReleasePrimitiveArrayCritical(jsrcBandOffsets, srcBandOffsets, 0);
env->ReleasePrimitiveArrayCritical(jcolorSelection, colorSelection, 0);
}
std::string ColorDiscriminator::HueDominator::hue_str() const {
return HueToString(hue());
}
void KColorValueSelector::drawPalette( QPixmap *pixmap )
{
int xSize = contentsRect().width(), ySize = contentsRect().height();
QImage image( QSize( xSize, ySize ), QImage::Format_RGB32 );
QColor col;
uint *p;
QRgb rgb;
int _r, _g, _b;
col.setHsv( hue(), saturation(), colorValue() );
col.getRgb( &_r, &_g, &_b );
if ( orientation() == Qt::Horizontal )
{
for ( int v = 0; v < ySize; v++ )
{
p = ( uint * ) image.scanLine( ySize - v - 1 );
for( int x = 0; x < xSize; x++ )
{
switch ( chooserMode() ) {
case ChooserClassic:
default:
col.setHsv( hue(), saturation(), 255 * x / ( ( xSize == 1 ) ? 1 : xSize - 1 ) );
break;
case ChooserRed:
col.setRgb( 255 * x / ( ( xSize == 1 ) ? 1 : xSize - 1 ), _g, _b );
break;
case ChooserGreen:
col.setRgb( _r, 255 * x / ( ( xSize == 1 ) ? 1 : xSize - 1 ), _b );
break;
case ChooserBlue:
col.setRgb( _r, _g, 255 * x / ( ( xSize == 1 ) ? 1 : xSize - 1 ) );
break;
case ChooserHue:
col.setHsv( 360 * x / ( ( xSize == 1 ) ? 1 : xSize - 1 ), 255, 255 );
break;
case ChooserSaturation:
col.setHsv( hue(), 255 * x / ( ( xSize == 1 ) ? 1 : xSize - 1 ), colorValue() );
break;
case ChooserValue:
col.setHsv( hue(), saturation(), 255 * x / ( ( xSize == 1 ) ? 1 : xSize - 1 ) );
break;
}
rgb = col.rgb();
*p++ = rgb;
}
}
}
if( orientation() == Qt::Vertical )
{
for ( int v = 0; v < ySize; v++ )
{
p = ( uint * ) image.scanLine( ySize - v - 1 );
switch ( chooserMode() ) {
case ChooserClassic:
default:
col.setHsv( hue(), saturation(), 255 * v / ( ( ySize == 1 ) ? 1 : ySize - 1 ) );
break;
case ChooserRed:
col.setRgb( 255 * v / ( ( ySize == 1 ) ? 1 : ySize - 1 ), _g, _b );
break;
case ChooserGreen:
col.setRgb( _r, 255 * v / ( ( ySize == 1 ) ? 1 : ySize - 1 ), _b );
break;
case ChooserBlue:
col.setRgb( _r, _g, 255 * v / ( ( ySize == 1 ) ? 1 : ySize - 1 ) );
break;
case ChooserHue:
col.setHsv( 360 * v / ( ( ySize == 1 ) ? 1 : ySize - 1 ), 255, 255 );
break;
case ChooserSaturation:
col.setHsv( hue(), 255 * v / ( ( ySize == 1 ) ? 1 : ySize - 1 ), colorValue() );
break;
case ChooserValue:
col.setHsv( hue(), saturation(), 255 * v / ( ( ySize == 1 ) ? 1 : ySize - 1 ) );
break;
}
rgb = col.rgb();
for ( int i = 0; i < xSize; i++ )
*p++ = rgb;
}
}
/*
if ( pixmap->depth() <= 8 )
{
extern QVector<QColor> kdeui_standardPalette();
const QVector<QColor> standardPalette = kdeui_standardPalette();
KImageEffect::dither( image, standardPalette.data(), standardPalette.size() );
}
*/
*pixmap = QPixmap::fromImage( image );
}
void QgsColorWheel::createTriangle()
{
if ( !mWheelImage || !mTriangleImage )
{
return;
}
QPointF center = QPointF( mWheelImage->width() / 2.0, mWheelImage->height() / 2.0 );
mTriangleImage->fill( Qt::transparent );
QPainter imagePainter( mTriangleImage );
imagePainter.setRenderHint( QPainter::Antialiasing );
int angle = hue();
double wheelRadius = mWheelImage->width() / 2.0;
double triangleRadius = wheelRadius - mWheelThickness - 1;
//pure version of hue (at full saturation and value)
QColor pureColor = QColor::fromHsv( angle, 255, 255 );
//create copy of color but with 0 alpha
QColor alphaColor = QColor( pureColor );
alphaColor.setAlpha( 0 );
//some rather ugly shortcuts to obtain corners and midpoints of triangle
QLineF line1 = QLineF( center.x(), center.y(), center.x() - triangleRadius * cos( M_PI / 3.0 ), center.y() - triangleRadius * sin( M_PI / 3.0 ) );
QLineF line2 = QLineF( center.x(), center.y(), center.x() + triangleRadius, center.y() );
QLineF line3 = QLineF( center.x(), center.y(), center.x() - triangleRadius * cos( M_PI / 3.0 ), center.y() + triangleRadius * sin( M_PI / 3.0 ) );
QLineF line4 = QLineF( center.x(), center.y(), center.x() - triangleRadius * cos( M_PI / 3.0 ), center.y() );
QLineF line5 = QLineF( center.x(), center.y(), ( line2.p2().x() + line1.p2().x() ) / 2.0, ( line2.p2().y() + line1.p2().y() ) / 2.0 );
line1.setAngle( line1.angle() + angle );
line2.setAngle( line2.angle() + angle );
line3.setAngle( line3.angle() + angle );
line4.setAngle( line4.angle() + angle );
line5.setAngle( line5.angle() + angle );
QPointF p1 = line1.p2();
QPointF p2 = line2.p2();
QPointF p3 = line3.p2();
QPointF p4 = line4.p2();
QPointF p5 = line5.p2();
//inspired by Tim Baumann's work at https://github.com/timjb/colortriangle/blob/master/colortriangle.js
QLinearGradient colorGrad = QLinearGradient( p4.x(), p4.y(), p2.x(), p2.y() );
colorGrad.setColorAt( 0, alphaColor );
colorGrad.setColorAt( 1, pureColor );
QLinearGradient whiteGrad = QLinearGradient( p3.x(), p3.y(), p5.x(), p5.y() );
whiteGrad.setColorAt( 0, QColor( 255, 255, 255, 255 ) );
whiteGrad.setColorAt( 1, QColor( 255, 255, 255, 0 ) );
QPolygonF triangle;
triangle << p2 << p1 << p3 << p2;
imagePainter.setPen( Qt::NoPen );
//start with a black triangle
imagePainter.setBrush( QBrush( Qt::black ) );
imagePainter.drawPolygon( triangle );
//draw a gradient from transparent to the pure color at the triangle's tip
imagePainter.setBrush( QBrush( colorGrad ) );
imagePainter.drawPolygon( triangle );
//draw a white gradient using additive composition mode
imagePainter.setCompositionMode( QPainter::CompositionMode_Plus );
imagePainter.setBrush( QBrush( whiteGrad ) );
imagePainter.drawPolygon( triangle );
//above process results in some small artifacts on the edge of the triangle. Let's clear these up
//use source composition mode and draw an outline using a transparent pen
//this clears the edge pixels and leaves a nice smooth image
imagePainter.setCompositionMode( QPainter::CompositionMode_Source );
imagePainter.setBrush( Qt::NoBrush );
imagePainter.setPen( QPen( Qt::transparent ) );
imagePainter.drawPolygon( triangle );
imagePainter.end();
mTriangleDirty = false;
}
