How to make a unsharp mask filter in Matlab The goal of this

How to make a unsharp mask filter in Matlab

The goal of this program is to read in a 256x256 image called pirate.tif and create the algorithm which will run this filter on the image. So far I know how to read in the image but I am having trouble with the code. HELP!

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A = imread(\'pirate.tif)

imshow(A);

(NEED HELP WITH THE REST)

*Note : PLZ do not refer to the imsharpen function. This is not the goal of the program.*

Solution

H = padarray(2,[256 256]) - fspecial(\'gaussian\' ,[256 256],2); % create unsharp mask