Article View: comp.graphics.algorithms
Article #43Re: 2D image rotation problem
From: Xiaoyi Wu
Date: Mon, 15 Jan 1996 20:04
Date: Mon, 15 Jan 1996 20:04
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1987 bytes
Just thought I might make things a bit more clear here: The FAQ talked about doing a reverse rotation to avoid holes in the rotated image, which I followed. The question is: even if you do it the reverse way, you still end up with some pixels that fall out of the range of the source image. How do you deal with this - for now, I just arbitrarily assign them the same value as the boundary pixels. Is there a better way? Thanks. In article <4de7gt$j0i@charm.magnus.acs.ohio-state.edu>, xiaoyi@bmecg.bme.ohio-state.edu (Xiaoyi Wu) writes: > Path: magnus.acs.ohio-state.edu!bmecg.bme.ohio-state.edu!xiaoyi > From: xiaoyi@bmecg.bme.ohio-state.edu (Xiaoyi Wu) > Newsgroups: comp.graphics.algorithms,comp.lang.c > Subject: 2D image rotation problem > Date: 15 Jan 1996 18:47:57 GMT > Organization: Biomedical Engineering OSU > Lines: 12 > Distribution: world > Message-ID: <4de7gt$j0i@charm.magnus.acs.ohio-state.edu> > Reply-To: xiaoyi@mozart.bme.ohio-state.edu (Xiaoyi Wu) > NNTP-Posting-Host: bmecg.bme.ohio-state.edu > Xref: magnus.acs.ohio-state.edu comp.graphics.algorithms:26053 comp.lang.c:153880 > > I did read the FAQ and digged up Graphics Gems, but > no source code was given. So, here it comes: > > I need to rotate a 2D image by a specified angle with > respect to a specified point within the image. > > Has anyone written a program like this before? I'd > greatly appreciate any inputs. > > Thanks. > > Xiaoyi
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Path: arc1-ca.pugleaf.net!bmecg.bme.ohio-state.edu!xiaoyi From: xiaoyi@bmecg.bme.ohio-state.edu (Xiaoyi Wu) Newsgroups: comp.graphics.algorithms,comp.lang.c,sci.image.processing Subject: Re: 2D image rotation problem Date: 15 Jan 1996 20:04:49 GMT Organization: Biomedical Engineering OSU Distribution: world Message-ID: <4dec11$jg5@charm.magnus.acs.ohio-state.edu> References: <4de7gt$j0i@charm.magnus.acs.ohio-state.edu> Reply-To: xiaoyi@mozart.bme.ohio-state.edu (Xiaoyi Wu) NNTP-Posting-Host: bmecg.bme.ohio-state.edu