2007.09.23 16:42 "[Tiff] G3 fax: EOL needed at the beginning of each
strip?", by ComSquare Martin Osieka
Thread
2007.09.24 01:27 "Re: [Tiff] G3 fax: EOL needed at the beginning of each
strip?", by Bob Friesenhahn
2007.09.24 05:56 "Re: [Tiff] G3 fax: EOL needed at the beginning of each
strip?", by Joris Van Damme
2007.09.24 07:51 "Re: [Tiff] G3 fax: EOL needed at the beginning of each
strip?", by Joris Van Damme
2007.09.24 08:32 "Re: [Tiff] G3 fax: EOL needed at the beginning of each
strip?", by Joris Van Damme
2007.09.24 08:58 "Re: [Tiff] G3 fax: EOL needed at the beginning of each strip?", by Andy Cave
Well there you have the specifics. Section 10 is for CCITT Huffman, so I would say that Huffman's can (should) not contain EOLs, but G3/G4s should.
----- Original Message -----
Cc: "Joris" <joris.at.lebbeke@skynet.be>; <tiff@lists.maptools.org> Sent: Monday, September 24, 2007 9:52 AM Subject: Re: [Tiff] G3 fax: EOL needed at the beginning of each strip?
I'm curious - where in the spec does it indicate strips have to start with
You may interpret this from TIFF 6.0 section 11 "CCITT Bilevel Encoding"
Strips and Tiles.
When CCITT bi-level encoding is employed, interaction with
stripping (Section 3) and tiling (Section 15) is as follows:
a. Decompose the image into segments-individual pixel arrays representing
the desired strip or tile configuration. The CCITT encoding
procedures are
applied most flexibly if the segments each have a multiple of 4
lines.
b. Individually encode each segment according to the specified CCITT
bilevel
encoding, as if each segment is a separate raster-graphic image.Means strips should be encoded independent from each other.
I do not have access to the CCITT spec in the moment, but I guess they are
telling an image must start with EOL.Still section 10 tells no EOLs needed...
So I would expect T.4 TIFFs containing no EOLs at all are legal.