Path: utzoo!attcan!uunet!ncrlnk!ncr-sd!hp-sdd!hplabs!hpda!hpcuhb!hpcilzb!hpcea!hpnmdla!hpmwtd!markv
From: markv@hpmwtd.HP.COM (Mark VanMeeter)
Newsgroups: comp.graphics
Subject: Re: Algorithm for Scaling bitmaps
Message-ID: <720001@hpmwmdv.HP.COM>
Date: 12 Dec 88 19:06:42 GMT
References: <746@swivax.UUCP>
Organization: HP Microwave Tech. - Santa Rosa, Ca.
Lines: 17


>I'm searching for an algorithm to scale arbitrary bitmaps  by  arbitrary
>scale  factors  (e.g.  0.26,  1.7, 13, etc.). I've seen some pretty good
>results with FrameMaker on SUNS, but as  I  need  it  to  operate  in  a
>program  of  mine  that is of no use.  The best is a C-function that can
>scale SUN PixRects, but a description of a good algorithm or a reference
>to a publication would be of great help as well.

The following reference may be of use......

Schreiber, W.  and Troxel, D.
``Tranformation Between Continuous and Discrete Representations
of Images: A Perceptual Approach'', IEEE Transactions on Pattern
Analysis and Machine Intelligence, March 1985
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Mark VanMeeter