void PseudoColorOp::operator()(const imagein::Image* image, const std::map<const imagein::Image*, std::string>&) {
GrayscaleImage* tmpImg = Converter<GrayscaleImage>::convert(*image);
Image* resImg = new Image(tmpImg->getWidth(), tmpImg->getHeight(), 3);
for(unsigned int j = 0; j < tmpImg->getHeight(); ++j) {
for(unsigned int i = 0; i < tmpImg->getWidth(); ++i) {
Image::depth_t value = tmpImg->getPixel(i, j);
const int nhue = 256;
const int ngrad = ceil(256. / (double)nhue);
const int hue = floor(value * nhue / 256); /* € [0, nhue[ */
const int grad = value - ceil((double)hue * 256. / (double)nhue); /* € [0, ngrad[ */
QColor color = QColor::fromHsl(300 - hue * 300 / nhue, 255, (grad + 1) * 255 / (ngrad + 1));
resImg->setPixel(i, j, 0, color.red());
resImg->setPixel(i, j, 1, color.green());
resImg->setPixel(i, j, 2, color.blue());
}
}
delete tmpImg;
outImage(resImg, qApp->translate("PseudoColorOp", "Pseudo color").toStdString());
}
