MATLAB: How to apply Gaussian filter on images in MATLAB

gaussian fillter images matlab image processing noise removalImage Processing Toolbox

How to apply Gaussian filter on images in MATLAB?

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You can use imgaussfilt function for 2-D gaussian filtering as below:

I = imread('mypic.jpg');
Iblur = imgaussfilt(I, 1);

where the second input of imgaussfilt is standard deviation sigma.

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MATLAB: How to apply gaussian filter on images of type double in Matlab

The error message means, that the function imgaussfilt is not found. Either you did not install the Image Processing Toolbox or have no active license for it. The solution is to install this toolbox.

MATLAB: How to apply Gaussian filter on images in MATLAB

You need to look at the documentation when the error say "too many arguments". Several of your arguments were wrong. Here is the fixed code:

rgbImage = imread('peppers.png');
kernel = fspecial('gaussian', [7 7], 1.6);
blurredImage = imfilter(rgbImage, kernel);
downSample = imresize(blurredImage, 1/3); % downSample by factor of 3 
imshow(downSample);

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Related Solutions

MATLAB: How to apply gaussian filter on images of type double in Matlab

MATLAB: How to apply Gaussian filter on images in MATLAB

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