2D Noise Generator. More...

#include <vtkLICNoiseHelper.h>

Public Member Functions
	vtkLICRandomNoise2D ()=default

void	DeleteValues (unsigned char *vals)
	Delete the passed in array of values. More...

Static Public Member Functions
static vtkImageData *	GetNoiseResource ()

enum	{ UNIFORM = 0 , GAUSSIAN = 1 , PERLIN = 2 }
	Generate a patch of random gray scale values along with an alpha channel (in vtk array format). More...

float *	Generate (int type, int &sideLen, int &grainLize, float minNoiseVal, float maxNoiseVal, int nLevels, double impulseProb, float impulseBgNoiseVal, int seed)
	Generate a patch of random gray scale values along with an alpha channel (in vtk array format). More...

Detailed Description

2D Noise Generator.

Generate arrays for use as noise texture in the LIC algorithm. Can generate noise with uniform or Gaussian distributions, with a desired number of noise levels, and a desired frequency (f < 1 is impulse noise).

Definition at line 59 of file vtkLICNoiseHelper.h.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

Generate a patch of random gray scale values along with an alpha channel (in vtk array format).

The data should be deleted by later calling DeleteValues. Grain size and sideLen may be modified to match the noise generator requirements, returned arrays will be sized accordingly.

type - UNIFORM=0, GAUSSIAN=1, PERLIN=2 sideLen - side length of square patch in pixels (in/out) grainSize - grain size of noise values in pixels (in/out) nLevels - number of noise intensity levels minNoiseVal - set the min for noise pixels (position distribution) maxNoiseVal - set the max for noise pixels (position distribution) impulseProb - probability of impulse noise,1 touches every pixel impulseBgNoiseVal - set the background color for impulse noise seed - seed for random number generator

Enumerator
UNIFORM
GAUSSIAN
PERLIN

Definition at line 82 of file vtkLICNoiseHelper.h.

Constructor & Destructor Documentation

◆ vtkLICRandomNoise2D()

vtkLICRandomNoise2D::vtkLICRandomNoise2D ( )

default

Member Function Documentation

◆ Generate()

float* vtkLICRandomNoise2D::Generate	(	int	type,
		int &	sideLen,
		int &	grainLize,
		float	minNoiseVal,
		float	maxNoiseVal,
		int	nLevels,
		double	impulseProb,
		float	impulseBgNoiseVal,
		int	seed
	)

Generate a patch of random gray scale values along with an alpha channel (in vtk array format).

The data should be deleted by later calling DeleteValues. Grain size and sideLen may be modified to match the noise generator requirements, returned arrays will be sized accordingly.

type - UNIFORM=0, GAUSSIAN=1, PERLIN=2 sideLen - side length of square patch in pixels (in/out) grainSize - grain size of noise values in pixels (in/out) nLevels - number of noise intensity levels minNoiseVal - set the min for noise pixels (position distribution) maxNoiseVal - set the max for noise pixels (position distribution) impulseProb - probability of impulse noise,1 touches every pixel impulseBgNoiseVal - set the background color for impulse noise seed - seed for random number generator

◆ DeleteValues()

void vtkLICRandomNoise2D::DeleteValues ( unsigned char * vals )

inline

Delete the passed in array of values.

Definition at line 95 of file vtkLICNoiseHelper.h.

◆ GetNoiseResource()

static vtkImageData* vtkLICRandomNoise2D::GetNoiseResource ( )

static

The documentation for this class was generated from the following file:

Rendering/LICOpenGL2/vtkLICNoiseHelper.h

Public Member Functions

Static Public Member Functions