GiciTransform
Class CoefficientsApproximation

java.lang.Object
  GiciTransform.CoefficientsApproximation

public class CoefficientsApproximation
extends java.lang.Object

This class receives an image and approximates its coefficients.
Usage example:
construct
setParameters
run

Version:

1.1

Author:

Group on Interactive Coding of Images (GICI)

Field Summary

(package private) int[]	approximationTypes Approximation to be applied to coefficients of each channel.
(package private) float[][][]	imageSamples Definition in Coder
(package private) boolean	parametersSet To know if parameters are set.

Constructor Summary

CoefficientsApproximation(float[][][] imageSamples)
Constructor that receives the original image samples.

Method Summary

float[][][]	run() Performs the approximation for each of the coefficients of the transformed image
void	setParameters(int[] approximationTypes) Set the parameter that specifies the type of approximation
static boolean	TERsetApproximationNeed(int[] approximationTypes) States if approximation is needed according to the user specifications and the requirements of the TER software

Methods inherited from class java.lang.Object

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

Field Detail

imageSamples

float[][][] imageSamples

Definition in Coder

approximationTypes

int[] approximationTypes

Approximation to be applied to coefficients of each channel.

Valid values are:

• 0 - Cast to integer
• 1 - Round
• 2 - Floor
• 3 - Ceil

parametersSet

boolean parametersSet

To know if parameters are set.

True indicates that they are set otherwise false.

Constructor Detail

CoefficientsApproximation

public CoefficientsApproximation(float[][][] imageSamples)

Constructor that receives the original image samples.

Parameters:

imageSamples - definition in Coder

Method Detail

setParameters

public void setParameters(int[] approximationTypes)

Set the parameter that specifies the type of approximation

Parameters:

approximationTypes - definition in approximationTypes

run

public float[][][] run()
                throws ErrorException

Performs the approximation for each of the coefficients of the transformed image

Returns:

the image with the coefficients approximated

Throws:

ErrorException - when parameters are not set

TERsetApproximationNeed

public static boolean TERsetApproximationNeed(int[] approximationTypes)

States if approximation is needed according to the user specifications and the requirements of the TER software

Parameters:

approximationTypes - definition in approximationTypes

Returns:

a boolean that indicates if the approximation is required