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September 2002
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2002.10.01 13:36 "Re: Error message with tiffcp", by Ed Grissom
In a previous message, Andrey said: > Note, that this will not be pure JPEG-file, but JPEG > incapsulated in TIFF. Other compression methods, > like PackBits, will give you better results > for your 1-bit images. > > If you want to produce pure JPEG-images you need other tools, > for example, ImageMagick (http://www.imagemagick.org/): I think you mean JFIF (.jpg) intsted of "pure JPEG". JPEG is a compression method, not a file format. JPEG compression is used in a wide variety of formats (TIFF, NITF, JFIF, BMP(*), etc.). JFIF is a file format that only supports JPEG compression. Other formats support other types of compression in addition to JPEG compression. (*) ok, I have seen a spec for this, but have never seen an actual JPEG BMP in the wild. -- ed grissom egrissom@ziimaging.com