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using median() instead of medfilt2()

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Matthew Worker
Matthew Worker on 4 Oct 2021
Commented: Rena Berman on 13 Dec 2021
I am not sure how to do part b and well hence c as well. can you help with how to code this
my teacher requested using median()
i attached the image file
%% 2. Median Filter
sad1=imread('sadimg.bmp'); %a) Read ‘sadimg.bmp’ store image into ‘sad1’

Answers (2)

Walter Roberson
Walter Roberson on 4 Oct 2021
Read the function information at more closely.
Hint: Use a 1 x 1 block and a border of [1 1]
Hint: Use TrimBorder false
Walter Roberson
Walter Roberson on 4 Oct 2021
Look at the documentation on blockproc. Notice that one of the parameters is an anonymous function that receives a struct and accesses a field of that struct and passes the data to a function to be processed.
Image Analyst
Image Analyst on 4 Oct 2021
blockproc normally moves in "jumps" of the block size when it scans the image. However it can move with an overlap, so that it would move over by just one pixel if you want. I attach demos for both ways.
However I think that if you want to move over just one pixel at a time, then the function you should probably use instead would be nlfilter(). You can have a custom filter where you did a median with the median() function. Demo attached for that also.

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Image Analyst
Image Analyst on 4 Oct 2021

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