org.openimaj.image.processing.convolution

Class FFastGaussianConvolve

java.lang.Object

org.openimaj.image.processing.convolution.FFastGaussianConvolve

All Implemented Interfaces:

ImageProcessor<FImage>, Processor<FImage>, SinglebandImageProcessor<Float,FImage>

@Reference(type=Inproceedings,
           author="Kovesi, P.",
           title="Fast Almost-Gaussian Filtering",
           year="2010",
           booktitle="Digital Image Computing: Techniques and Applications (DICTA), 2010 International Conference on",
           pages={"121","125"},
           month="Dec",
           customData={"keywords","Gaussian processes;approximation theory;band-pass filters;image processing;Gaussian bandpass filters;fast almost-Gaussian filtering;image averaging;integral images;log-Gabor filters;separable moving average filters;summed area tables;symmetric transfer function;Approximation methods;Bandwidth;Computer vision;Frequency domain analysis;Laplace equations;Pixel;Transfer functions;Difference of Gaussian filtering;Gaussian smoothing","doi","10.1109/DICTA.2010.30"})
public class FFastGaussianConvolve
extends Object
implements SinglebandImageProcessor<Float,FImage>

Fast approximate Gaussian smoothing using repeated fast box filtering.

Author:

Jonathon Hare (jsh2@ecs.soton.ac.uk)

Nested Class Summary

Nested classes/interfaces inherited from interface org.openimaj.image.processor.SinglebandImageProcessor

SinglebandImageProcessor.Processable<T,S extends Image<T,S>,I extends Image<?,I>>

Constructor Summary

Constructors

Constructor and Description
FFastGaussianConvolve(float sigma, int n) Construct an FFastGaussianConvolve to approximate blurring with a Gaussian of standard deviation sigma.

Method Summary

Modifier and Type	Method and Description
void	processImage(FImage image) Process an image.

Methods inherited from class java.lang.Object

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

Constructor Detail

FFastGaussianConvolve

public FFastGaussianConvolve(float sigma,
                             int n)

Construct an FFastGaussianConvolve to approximate blurring with a Gaussian of standard deviation sigma.

Parameters:

sigma - Standard deviation of the approximated Gaussian

n - Number of filtering iterations to perform (usually between 3 and 6)

Method Detail

processImage

public void processImage(FImage image)

Description copied from interface: ImageProcessor

Process an image. Implementing classes must alter the image passed in-place or assign the output to the input using Image.internalAssign(Image).

Specified by:

processImage in interface ImageProcessor<FImage>

Parameters:

image - The image to process in place.