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TIFF and LibTiff Mail List Archive

Thread

2008.03.12 07:07 "[Tiff] encapsulate jpeg to TIFF without de-compressing and re-compressing", by Zhang Weiwu
2008.03.17 18:13 "Re: [Tiff] encapsulate jpeg to TIFF without de-compressing andre-compressing", by Gerben Vos
2008.03.18 01:29 "Re: [Tiff] encapsulate jpeg to TIFF without de-compressing andre-compressing", by Zhang Weiwu
2008.03.18 10:55 "Re: [Tiff] encapsulate jpeg to TIFF without de-compressing andre-compressing", by Gerben Vos

2008.03.12 07:07 "[Tiff] encapsulate jpeg to TIFF without de-compressing and re-compressing", by Zhang Weiwu

Hi. I had been looking for an way to// //encapsulate an existing jpeg file to TIFF format, without de-compress it first and re-compress it again. I discussed this on imagemagick mailing list, here is the answer from Anthony Thyssen:

> It is thus NOT POSIBLE for a general image converter to handle what you > ask without decoding the lossy JPEG format.

>
> Someone would have needed to write something specific for TIFF to do
> this.
>

> I suggest you just don't save as JPEG compression in the TIFF format, > or try to find a program that can do it without loss. It is not likely.

>
>

> If you do find such a program. Great, let me know too, so I can add a > note about it in IM Examples, for the TIFF format...

> http://www.imagemagick.org/Usage/formats/#tiff

I think maybe in libtiff list there might be an answer since the list solved a similar problem (**"how to convert a JPEG-IN-TIFF file to jpeg file without decomress & compress", by Kelvin Zhong * <http://www.asmail.be/msg0055147690.html>*

So, can libtiff does this?

Thanks!
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