Article View: alt.graphics.pixutils
Article #579Re: Way to get rid of HSI header in JPEGs
From: Tom Lane
Date: Tue, 15 Dec 1992 16:08
Date: Tue, 15 Dec 1992 16:08
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briana@tau-ceti.isc-br.com (Brian W. Antoine) writes: > : >>cvance@polaris.unm.edu (Chad Vance) writes: > : >>| Plese let me know if there is a way to get rid of the Handmade Software > : >>| header bullshit! > : > I had pretty good luck just deleting the first 332 chars of the file. That > removed the HSI header and the remainder was a normal Jpeg file. Of course > the image in question was a repost from a few months ago, so I did it more to > see if it could be done than anything else. This may work once in a while, but it fails on most HSI files. In a typical HSI file, only portions of the image are encoded in JPEG format. Extracting out the part(s) that look like JPEG datastreams does not give you a complete or even internally consistent image. In my opinion, HSI has single-handedly done more to confuse the JPEG file format situation than anyone else. Proprietary file formats are not a good thing. regards, tom lane organizer, Independent JPEG Group
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Newsgroups: alt.graphics.pixutils Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!cis.ohio-state.edu!news.sei.cmu.edu!fs7.ece.cmu.edu!crabapple.srv.cs.cmu.edu!tgl From: tgl+@cs.cmu.edu (Tom Lane) Subject: Re: Way to get rid of HSI header in JPEGs Message-ID: <BzB66E.4qM.1@cs.cmu.edu> Sender: news@cs.cmu.edu (Usenet News System) Nntp-Posting-Host: g.gp.cs.cmu.edu Organization: School of Computer Science, Carnegie Mellon References: <1992Dec14.220241.7337@murdoch.acc.Virginia.EDU> <2902@tau-ceti.isc-br.com> Date: Tue, 15 Dec 1992 16:08:30 GMT Lines: 21