23 double distance = qSqrt (pow (
double (pixel.red()) , 2) +
24 pow (
double (pixel.green()), 2) +
25 pow (
double (pixel.blue()) , 2));
26 return distance / qSqrt (255.0 * 255.0 + 255.0 * 255.0 + 255.0 * 255.0);
const int INTENSITY_MIN
Constants for use by CurveFilter and other curve-related classes.
virtual ~ColorFilterStrategyIntensity()
virtual double pixelToZeroToOne(const QColor &pixel, QRgb rgbBackground) const
Return a normalized value of 0 to 1 given input pixel.
virtual int zeroToOneToValue(double s) const
Return the low value normalized to 0 to 1.
ColorFilterStrategyIntensity()
Single constructor.