Class MeanFilter


  • public class MeanFilter
    extends AreaFilterOperation
    Applies a mean filter that replaces each pixel by the mean of itself and its neighbors. The number of neighbors can be defined by the setArea methods. This filter only works with intensity-based image types. More precisely, only GrayIntegerImage and RGBIntegerImage will work.

    Usage example

     PixelImage image = ...; // some GrayIntegerImage or RGBIntegerImage
     MeanFilter filter = new MeanFilter();
     filter.setArea(5, 5);
     filter.setInputImage(image);
     filter.process();
     PixelImage filteredImage = filter.getOutputImage();
     
    Since:
    0.5.0
    Author:
    Marco Schmidt
    • Constructor Detail

      • MeanFilter

        public MeanFilter()
    • Method Detail

      • computeSample

        public int computeSample​(int[] samples,
                                 int numSamples)
        Description copied from class: AreaFilterOperation
        Determine the resulting sample for an array with the source sample and zero or more of its neighbors. This abstract method must be implemented by classes extending this operation. The array will hold numSamples samples, which will be stored starting at offset 0.

        Normally, numSamples is equal to AreaFilterOperation.getAreaWidth() times AreaFilterOperation.getAreaHeight(). Near the border of the image you may get less samples. Example: the top left sample of an image has only three neighbors (east, south-east and south), so you will only get four samples (three neighbors and the sample itself).

        Specified by:
        computeSample in class AreaFilterOperation
        Parameters:
        samples - the array holding the sample(s)
        numSamples - number of samples in the array
        Returns:
        sample to be written to the output image