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DPChallenge Forums >> Tips, Tricks, and Q&A >> Image resizing
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 08/07/2003 12:23:13 AM · #1
Up until today I wasn't aware of the benefits of stair interpolation (downsizing or upsizing in small increments). I received some very useful advice on this from ScottK and EddyG in another post today which has opened my eyes to improving my methods of image resizing......thanks guys:)

I have also discovered better interpolation algorithms than the lanczos & bicubic algorithms that I have used in the past. This site //www.americaswonderlands.com/digital_photo_interpolation.htm lists the most popular and has sample images where you can compare for yourself the results of various interpolation methods. IMO I think the Genuine Fractals ver 3.0 method to be the best which is easily seen in the bottom rose samples. Now when used with the stair interpolation method of upsizing in small increments say of about 10% or so should produce excellent results.

Note: the Stair Interpolation method on this site just uses photoshop's bicubic interpolation algorithm and automatically does the incremental upsizing. You would be better using your chosen algorithm (in my case Genuine Fractals) and manually upsizing incrementally yourself.

Message edited by author 2003-08-07 00:24:54.
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