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 Details

    • GrayworldWB

      protected GrayworldWB(long addr)
  • Method Details

    • __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
      Returns:
      automatically generated
    • setSaturationThreshold

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

      protected void finalize() throws Throwable
      Overrides:
      finalize in class WhiteBalancer
      Throws:
      Throwable