SoRescaleIntensityProcessing Class Reference
[Grayscale Transforms]

SoRescaleIntensityProcessing engine More...

#include <ImageViz/Engines/ImageFiltering/GrayscaleTransforms/SoRescaleIntensityProcessing.h>

Inheritance diagram for SoRescaleIntensityProcessing:

Public Types
enum	RangeMode { MIN_MAX = 0, OTHER = 1 }
Public Member Functions
	SoRescaleIntensityProcessing ()
Public Attributes
SoSFEnum	computeMode
SoSFImageDataAdapter	inImage
SoSFEnum	rangeMode
SoSFVec2f	intensityRangeInput
SoSFVec2f	intensityRangeOutput
SoImageVizEngineOutput < SoSFImageDataAdapter, SoImageDataAdapter * >	outImage

Detailed Description

SoRescaleIntensityProcessing engine

The SoRescaleIntensityProcessing engine performs a linear scaling of the gray level values of an image.

This engine performs a linear scaling of the gray level values of an image to a user-specified interval. It may be applied to images with a gray level range other than [0, 255], and for short or floating point images. In Figure , the input gray levels of interest are in the user-specified interval [a, b], and the output range is the interval [c, d].

The normalize transformation

The input image is I, and the output image is O. Let [a, b] be the input range and [c, d] the output range, then:

$\begin{array}{ll} O(n,m)=c & ~\mbox{if $I(n,m) \leq a$}\\ O(n,m)=\left(\frac{d-c}{b-a}\right)(I(n,m)-a)+c & ~\mbox{if $a < I(n,m) \leq b$}\\ O(n,m)=d & ~\mbox{if $I(n,m) > b$}\end{array}$

FILE FORMAT/DEFAULT

computeMode	MODE_AUTO
inImage	NULL
rangeMode	MIN_MAX
intensityRangeInput	0.0f 255.0f
intensityRangeOutput	0.0f 255.0f

Library references: normalize

Member Enumeration Documentation

enum SoRescaleIntensityProcessing::RangeMode

Enumerator:

MIN_MAX	With this option the histogram is computed between the minimum and the maximum of the image.
OTHER	With this option the histogram is computed between user-defined bounds [a,b].