NEG_EXP_NOISE_CVIP

neg_exp_noise_cvip() - adds Negative Exponential noise to an image.

SYNTAX
DESCRIPTION
REFERENCE
EXAMPLE
CREDITS

SYNTAX

[ outImage ] = neg_exp_noise_cvip( inImage, var, noiseImgSize)

Input Parameters include:

inImage - 1-band input image of MxN size or 3-band input image of MxNx3 size. The input image can be of uint8 or uint16 or double class.
var - variance of Negative Exponential noise. (default 100)

noiseImgSize - Size of Negative Exponential noise image. Only needed when noise is added to black image. noiseImgSize(1): height (default 256) noiseImgSize(2): width (default 256)

Output Parameter includes:

outImage - Negative Exponential noise added image or Negative Exponential noise image

DESCRIPTION

The function adds Negative exponential noise to an image or creates Negative exponential noise image. If user wants to add Negative exponential noise to the image, the user needs to pass only two input arguments (input image, and noise variance). If user wants to create a Negative exponential noise image only, pass input image as an empty matrix [ ]. And, the size of the noise image can be defined by passing additional parameter (size of noise image). If not passed, default size of 256*256 will be selected.

REFERENCE

1. Scott E Umbaugh. DIGITAL IMAGE PROCESSING AND ANALYSIS: Applications with MATLAB and CVIPtools, 3rd Edition.

EXAMPLE

% Read image

 I = imread('butterfly.tif');

% Calling function with default parameters

 O1 = neg_exp_noise_cvip(I);

% variance = 200

 noise_parameter = 200;

% Calling functon with user defined parameters

 O2 = neg_exp_noise_cvip(I,noise_parameter);

% Negative exponential noise image

 image_size = [300 400];        %height = 300, width = 400

 O3 = neg_exp_noise_cvip([],noise_parameter, image_size);

% Display input image

 figure;imshow(I);title('Input image');

% Display output images

 figure;imshow(remap_cvip(O1,[]));title('Output image with default parameters');

 figure;imshow(remap_cvip(O2,[]));title('Output image with user defined parameters');

 figure;imshow(remap_cvip(O3,[]));title('Output image with user defined parameters');

CREDITS