|Image Processing Toolbox User's Guide|
Using Predefined Filter Types
fspecial function produces several kinds of predefined filters, in the form of correlation kernels. After creating a filter with
fspecial, you can apply it directly to your image data using
imfilter. This example illustrates applying an unsharp masking filter to an grayscale image. The unsharp masking filter has the effect of making edges and fine detail in the image more crisp.
I = imread('moon.tif'); h = fspecial('unsharp'); I2 = imfilter(I,h); imshow(I), title('Original Image') figure, imshow(I2), title('Filtered Image')
|Filtering Using imfilter||Filter Design|
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