Jay writes ... > on 12/12/02 7:55 AM michael shaffer wrote: > > > ... > > What you're saying is ... three 12bit channels (or 10bit, or > > 14) are somehow encoded into a single 16bit channel(?) ... > > ... > > Ummm no - what I was trying to say is that each pixel receptor > (or whatever you want to call them) on the sensor only sees > R, G or B depending on the filter over it. > So there's only the need to record a single channel of info > for each position. The other two channels for each pixel are > computed later in processing by looking at that pixel's neighbors.
Boy! ... maybe I'm dense, but that's difficult to wrap my head around. It would seem to violate a law "of conservation of information" ... that is, if the info isn't there in the first place, it must be somehow interpolated or otherwise manufactured(?) Can if be therefore said ... for 6Mpixel camera, there really isn't 36Mb of "real" 16bit RGB (or 12bits into a 16bit word) information gathered?? That, in reality, only 12Mb of highbit info is gathered, and the other 24Mb is calculated(?) I can understand encoding three 12bit channels inside a 16bit word (if you'll be writing a 16bit word format anyway), but I don't understand where the other 2/3 of info is coming from. (Not a big deal ... I suspect I'll find another form of the explaination somewhere ... I don't even have a d-camera) cheerios ... shAf :o) Avalon Peninsula, Newfoundland www.micro-investigations.com (in progress) =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
