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January 2004
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2004.01.23 17:38 "Re: How to convert MINISBLACK to PHOTOMETRIC_RGB", by Frank Warmerdam
Joris wrote: > > samples/bands/channels. > > > I'm confused. It's only now I (think I) understand the word 'band' is used > as another word for 'channel' and 'sample' throughout this discussion. Is > that correct? It's confusing, since it to me that word seems to be more like > 'strip' then like 'channel' or 'sample'. Joris, In the remote sensing community we used (still?) sometimes call what is a "sample" in TIFF a channel. Apparently it originally had something to do with comunications channels to the satellite or something. Band is another common name in the general imaging community I think. I suspect that it derives from a band representing a chunk of wavelength or bandwidth. I agree that band sounds alot like strip, and sometimes when I stop and think about it, it amazes me the amount of terminology and jargon involved in something as simple as raster files. BTW, in JPEG2000 they call a "sample" a "component". "sample" == "band" == "channel" == "component" == ? Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, warmerdam@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent