boofcv.alg.feature.color

Class HistogramFeatureOps

java.lang.Object

boofcv.alg.feature.color.HistogramFeatureOps

public class HistogramFeatureOps
extends java.lang.Object

Type specific operations for creating histgrams of image pixel values. The histogram is a feature descriptor and all the feature descriptor operations can be used on these histograms.

Unlike histogram operations in ImageStatistics the initial scale of the image doesn't matter. More specifically, ImageStatistics simply rounds the value to the nearest one and adds it to the element in a histogram. While these operations use the image's max values and the number of elements in the histogram to compute the bin period.

Constructor Summary

Constructors

Constructor and Description
HistogramFeatureOps()

Method Summary

Modifier and Type	Method and Description
static void	histogram_F32(Planar<GrayF32> image, Histogram_F64 histogram) Constructs an N-D histogram from a Planar GrayF32 image.
static void	histogram_U8(Planar<GrayU8> image, Histogram_F64 histogram) Constructs an N-D histogram from a Planar GrayU8 image.
static void	histogram(GrayF32 image, float minPixelValue, float maxPixelValue, TupleDesc_F64 histogram) Computes a single-band normalized histogram from a floating point image..
static void	histogram(GrayU16 image, int maxPixelValue, TupleDesc_F64 histogram) Computes a single-band normalized histogram from an integer image..
static void	histogram(GrayU8 image, int maxPixelValue, TupleDesc_F64 histogram) Computes a single-band normalized histogram from an integer image..

Methods inherited from class java.lang.Object

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

Constructor Detail

HistogramFeatureOps

public HistogramFeatureOps()

Method Detail

histogram

public static void histogram(GrayU8 image,
                             int maxPixelValue,
                             TupleDesc_F64 histogram)

Computes a single-band normalized histogram from an integer image..

Parameters:

image - Input image. Not modified.

maxPixelValue - Maximum possible value for a pixel for all bands.

histogram - Output histogram. Must have same number of bands as input image. Modified.

histogram

public static void histogram(GrayU16 image,
                             int maxPixelValue,
                             TupleDesc_F64 histogram)

Computes a single-band normalized histogram from an integer image..

Parameters:

image - Input image. Not modified.

maxPixelValue - Maximum possible value for a pixel

histogram - Output histogram. Must have same number of bands as input image. Modified.

histogram

public static void histogram(GrayF32 image,
                             float minPixelValue,
                             float maxPixelValue,
                             TupleDesc_F64 histogram)

Computes a single-band normalized histogram from a floating point image..

Parameters:

image - Input image. Not modified.

minPixelValue - Minimum possible for for a pixel. Inclusive

maxPixelValue - Maximum possible value for a pixel. Inclusive

histogram - The output histogram.

histogram_F32

public static void histogram_F32(Planar<GrayF32> image,
                                 Histogram_F64 histogram)

Constructs an N-D histogram from a Planar GrayF32 image.

Parameters:

image - input image

histogram - preconfigured histogram to store the output

histogram_U8

public static void histogram_U8(Planar<GrayU8> image,
                                Histogram_F64 histogram)

Constructs an N-D histogram from a Planar GrayU8 image.

Parameters:

image - input image

histogram - preconfigured histogram to store the output