Archived posting to the Leica Users Group, 1999/08/13
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]On 13 Aug 99, at 14:52, Jean-Claude Berger wrote: > Hello Erwin, > > Could this be a typo? I thought that each pixel was represented by 24 or > 48 bits. How can 4 pixels represent 1 pixel? > > > interpolation. Remember that 4 pixels are needed to record > > one image > > pixel. Jean-Claude, Erwin's comment referred to the capture of images via digital camera. The capture array in these devices is a regular square matrix ie colour reception elements are placed in a 2x2 dot matrix, not triplets like on a conventional CRT. AFAIK the matrix consists of a blue, red and two green sensitive pixels, since more information in the green band is desirable as green is the frequency to which human sight is most sensitive and subsequently most critical. Unfortunately I can't seem to find Jim Brick's (?) excellent post from many months ago which outlined the subject. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 Fax +61-2-9554-9259 UTC(GMT) +10 Hours audiob@ozemail.com.au http://www.ozemail.com.au/~distudio/pagelist.html