boofcv.alg.filter.blur.impl

Class ImplMedianHistogramInner

java.lang.Object

boofcv.alg.filter.blur.impl.ImplMedianHistogramInner

public class ImplMedianHistogramInner
extends java.lang.Object

A faster version of the histogram median filter that only processes the inner portion of the image. Instead of rebuilding the histogram from scratch for each pixel the histogram is updated using results from the previous pixel.

Based on the description in some papers I believe this algorithm is similar to the one proposed in:
Huang, T.S., Yang, G.J. and Tang, G.Y. (1979) A fast two-dimensional median filtering algorithm. IEEE Trans. Acoust. Speech Signal Process. 27, 13-18

Constructor Summary

Constructors

Constructor and Description
ImplMedianHistogramInner()

Method Summary

Modifier and Type	Method and Description
static void	process(GrayU8 input, GrayU8 output, int radius, int[] offset, int[] histogram) Applies a median image filter.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ImplMedianHistogramInner

public ImplMedianHistogramInner()

Method Detail

process

public static void process(GrayU8 input,
                           GrayU8 output,
                           int radius,
                           int[] offset,
                           int[] histogram)

Applies a median image filter.

Parameters:

input - Input image. Not modified.

output - Filtered output image. Modified.

radius - Size of the filter region.

offset - Array used to store relative pixel offsets.

histogram - Saves the image histogram. Must be at least 256 elements.