Re: Can thumbnails be included in jpeg images generated by xsane?

From: Stephen Williams (steve@icarus.com)
Date: Tue Mar 21 2000 - 20:04:02 PST

  • Next message: John Gay: "How can I get sane to recognise my scanner if I turn it on AFTER the PC?"

    njl98r@ecs.soton.ac.uk said:
    > There is no thumbnail in the JFIF file format, nor in the JPEG
    > standard itself.

    Yes there is.

    In the first APP0 marker there are Xthumbnail and Ythumbnail fields to
    specify the dimensions of the thumbnail. That is then followed by
    3*X*Y bytes of RGB thumbnail data. 

    -- 
Steve Williams                "The woods are lovely, dark and deep.
steve@icarus.com              But I have promises to keep,
steve@picturel.com            and lines to code before I sleep,
http://www.picturel.com       And lines to code before I sleep."

    --
Source code, list archive, and docs: http://www.mostang.com/sane/
To unsubscribe: echo unsubscribe sane-devel | mail majordomo@mostang.com

    This archive was generated by hypermail 2b29 : Tue Mar 21 2000 - 19:53:59 PST