org.openimaj.image.analysis.algorithm.histogram

Interface WindowedHistogramExtractor

All Known Implementing Classes:

BinnedWindowedExtractor, GradientOrientationHistogramExtractor, InterpolatedBinnedWindowedExtractor, SATWindowedExtractor

public interface WindowedHistogramExtractor

The primary purpose of this interface is to produce efficient access to (rectangular) histograms of arbitrary windows of an image. A number of methods are provided to extract such histograms.

Author:

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

Method Summary

Modifier and Type	Method and Description
Histogram	computeHistogram(int x, int y, int w, int h) Compute the histogram for the given window.
void	computeHistogram(int x, int y, int w, int h, Histogram histogram) Compute the histogram for the given window, storing the output in the given Histogram object, which must have the same length as given by getNumBins().
Histogram	computeHistogram(Rectangle roi) Compute the histogram for the given window.
void	computeHistogram(Rectangle roi, Histogram histogram) Compute the histogram for the given window, storing the output in the given Histogram object, which must have the same length as given by getNumBins().
int	getNumBins() Get the number of bins

Method Detail

getNumBins

int getNumBins()

Get the number of bins

Returns:

the number of bins

computeHistogram

Histogram computeHistogram(Rectangle roi)

Compute the histogram for the given window.

Parameters:

roi - the window

Returns:

the histogram in the window of the last analysed image

computeHistogram

Histogram computeHistogram(int x,
                           int y,
                           int w,
                           int h)

Compute the histogram for the given window.

Parameters:

x - The x-coordinate of the top-left of the window

y - The y-coordinate of the top-left of the window

w - The width of the window

h - The height of the window

Returns:

the histogram in the window of the last analysed image

computeHistogram

void computeHistogram(Rectangle roi,
                      Histogram histogram)

Compute the histogram for the given window, storing the output in the given Histogram object, which must have the same length as given by getNumBins().

Parameters:

roi - the window

histogram - the histogram to write to

computeHistogram

void computeHistogram(int x,
                      int y,
                      int w,
                      int h,
                      Histogram histogram)

Compute the histogram for the given window, storing the output in the given Histogram object, which must have the same length as given by getNumBins().

Parameters:

x - The x-coordinate of the top-left of the window

y - The y-coordinate of the top-left of the window

w - The width of the window

h - The height of the window

histogram - the histogram to write to