Class FastBlurFilter

  • All Implemented Interfaces:
    java.awt.image.BufferedImageOp

    public class FastBlurFilter
    extends AbstractFilter

    A fast blur filter can be used to blur pictures quickly. This filter is an implementation of the box blur algorithm. The blurs generated by this algorithm might show square artifacts, especially on pictures containing straight lines (rectangles, text, etc.) On most pictures though, the result will look very good.

    The force of the blur can be controlled with a radius and the default radius is 3. Since the blur clamps values on the edges of the source picture, you might need to provide a picture with empty borders to avoid artifacts at the edges. The performance of this filter are independant from the radius.

    • Constructor Detail

      • FastBlurFilter

        public FastBlurFilter()

        Creates a new blur filter with a default radius of 3.

      • FastBlurFilter

        public FastBlurFilter​(int radius)

        Creates a new blur filter with the specified radius. If the radius is lower than 1, a radius of 1 will be used automatically.

        Parameters:
        radius - the radius, in pixels, of the blur
    • Method Detail

      • getRadius

        public int getRadius()

        Returns the radius used by this filter, in pixels.

        Returns:
        the radius of the blur
      • filter

        public java.awt.image.BufferedImage filter​(java.awt.image.BufferedImage src,
                                                   java.awt.image.BufferedImage dst)
        Specified by:
        filter in interface java.awt.image.BufferedImageOp
        Specified by:
        filter in class AbstractFilter