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TIFF and LibTiff Mail List Archive

Thread

2004.01.14 12:01 "[Tiff] COLORMAP and byte padding", by Stephan Assmus
2004.01.14 15:07 "Re: [Tiff] COLORMAP and byte padding", by Frank Warmerdam
2004.01.14 16:18 "Re: [Tiff] COLORMAP and byte padding", by Gerben Vos
2004.01.14 16:43 "Re: [Tiff] COLORMAP and byte padding", by Joris Van Damme
2004.01.14 17:13 "Re: [Tiff] COLORMAP and byte padding", by Gerben Vos
2004.01.14 17:17 "Re: [Tiff] COLORMAP and byte padding", by Joris Van Damme
2004.01.14 17:26 "Re: [Tiff] COLORMAP and byte padding", by Andy Cave
2004.01.14 17:36 "Re: [Tiff] COLORMAP and byte padding", by Joris Van Damme
2004.01.14 17:24 "Re: [Tiff] COLORMAP and byte padding", by Phillip Crews
2004.01.14 18:18 "Re: [Tiff] COLORMAP and byte padding", by Marti Maria
2004.01.14 19:02 "Re: [Tiff] COLORMAP and byte padding", by Andy Cave
2004.01.14 19:36 "Re: [Tiff] COLORMAP and byte padding", by Marti Maria
2004.01.14 19:48 "Re: [Tiff] COLORMAP and byte padding", by Andy Cave
2004.01.15 17:24 "Re: [Tiff] COLORMAP and byte padding", by Marti Maria
2004.01.15 17:37 "Re: [Tiff] COLORMAP and byte padding", by Andy Cave
2004.01.15 00:05 "Re: [Tiff] COLORMAP and byte padding", by Chris Cox

2004.01.14 19:48 "Re: [Tiff] COLORMAP and byte padding", by Andy Cave

Hi Marti.

Your code will produce false results. Although I'd divide by 256, I would not multiple by 256 (which is where your errors come in). You'd still need to multiple by 257 so as to re-map the range back correctly, so a16_by256 should use the same calculation as a16_by257.

_andy.