Anti-Aliasing Filter for matlab imresize
5 views (last 30 days)
Show older comments
Hi, I am doing a project on computer graphics and have been asked to implement the matlab's imresize function in C++, using bicubic interpolation.
As you know, if the scale factor is less than one,we need a anti-aliasing filter while interpolation. However I have no experience in filter design and at the moment I'm still relatively new to matlab and the image processing toolbox. I've tried using the fspecial gaussian filter but it doesnt seem to have muxh effect. Can you give me any tips on how to produce an appropriate filter in matlab, or point me to relevant information.
Any help is appeciated,
many thanks,
Xifei WU 2011.6.14
3 Comments
David Young
on 14 Jun 2011
I'm sorry, but I don't know about the internal operation of imresize. I guess with some effort it would be possible to work out the anitaliasing method by applying imresize to simple examples.
Answers (2)
Jan
on 14 Jun 2011
You can look inside the IMRESIZE function itself. All necessary methods are implemented there.
Yoav
on 17 Jul 2011
What does the function imresizemex do? (I don't care about the specific implementation, just to understand how to output is defined by the input). Thanks in advance, Yoav
See Also
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!