T3D Re: T3D Re: T3D Re: digital camera resolution

[Bob Wier <wier@xxxxxxxxxxxxxxxxx>]

|
|And if one reads that article in EDN that I referenced a while ago,
|one sees that the digital camera's "pixels" often are black-magic 
|computation based ones.  Example: One of the cost savings used in some of 
|them is the use of VCR CCD's instead of camera CCD's.  The VCR CCD's are
|produced in volume and are cheaper.  Difference is that 
|the VCR ones have long aspect ratio "pixels", so they manipulate the data to
|get three picture pixels out of one "CCD pixel" in its long-direction.  
|Another example:  How does the color information get captured?  In the
|best case, they have filter stripes and the number of pixels is essentially
|one third of those on the CCD chip because it takes three to capture each
|of three primary colors.  But some use two colors and "fake" the third in
|software.  Some use black-magic formulae to conjure up the colors from other
|partial acquisitions, biasing the colors in what they perceive to be that
|which is desirable by the users (well, I guess the film makers do this too).

The Oly unit is stated as a "progressive scan". I can't really envision
how this works - can anyone enlighten?

THANKS

               Bob Wier
         mailto:wier@xxxxxxxxxxxxxxxxx
  03:31 PM  Tuesday, January 27, 1998
     Rocky Mountain College, Billings MT.
 keeper of the Photo-3d and Overland-Trails
mailing lists and the USA GPS Waypoint server 



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