How to apply highpass filter on image in Matlab??

I need to apply highpass filter on image, Is there a function in Matlab to apply highpass filter on the image??

Answer 1

[Prasanth Sikakollu]

Try imfilter() function.

B = imfilter(A,h) filters the multidimensional array A with the multidimensional filter h and returns the result in B.

Refer to the following documentation link on imfilter function:

https://in.mathworks.com/help/images/ref/imfilter.html

Hope this helps.

[ghada sandoub]

Thanks alot for your answer.. I think that it will help but how to make "h" as a highpass filter??

i know that to create a filter we should use " h = fspecial(type)" but i don't know which type should we use to make "h" as a highpass filter to be able to use it in "imfilter"

[Prasanth Sikakollu]

Refer to the following link to know more about which type to use in fspecial() function.

https://in.mathworks.com/help/images/ref/fspecial.html?s_tid=doc_ta#d117e68710

[ghada sandoub]

yes I know but i don't know which type of the following can be used as a highpass filter

[Ana Guerrero Rosario]

yeah I have the exact same question

[DGM]

The 'laplacian' and laplacian-of-gaussian ('log') filters are both high-pass filters. The laplacian of gaussian filter may help reduce the response to image noise.