Class GrayworldWB

  • public class GrayworldWB
    extends WhiteBalancer
    Gray-world white balance algorithm This algorithm scales the values of pixels based on a gray-world assumption which states that the average of all channels should result in a gray image. It adds a modification which thresholds pixels based on their saturation value and only uses pixels below the provided threshold in finding average pixel values. Saturation is calculated using the following for a 3-channel RGB image per pixel I and is in the range [0, 1]: \( \texttt{Saturation} [I] = \frac{\textrm{max}(R,G,B) - \textrm{min}(R,G,B) }{\textrm{max}(R,G,B)} \) A threshold of 1 means that all pixels are used to white-balance, while a threshold of 0 means no pixels are used. Lower thresholds are useful in white-balancing saturated images. Currently supports images of type REF: CV_8UC3 and REF: CV_16UC3.
    • Constructor Detail

      • GrayworldWB

        protected GrayworldWB​(long addr)
    • Method Detail

      • __fromPtr__

        public static GrayworldWB __fromPtr__​(long addr)
      • getSaturationThreshold

        public float getSaturationThreshold()
        Maximum saturation for a pixel to be included in the gray-world assumption SEE: setSaturationThreshold
        automatically generated
      • setSaturationThreshold

        public void setSaturationThreshold​(float val)
        getSaturationThreshold SEE: getSaturationThreshold
        val - automatically generated
      • finalize

        protected void finalize()
                         throws java.lang.Throwable
        finalize in class WhiteBalancer