Archived posting to the Leica Users Group, 1999/02/01
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Yes I did want an answer, what I didnt want was a pissing contest because I didnt phrase my question correctly;; I have worked in a photo lab, nuclear weapons areas, and assorted other tech areas to know that B means Blue; G means Green ect;;;jh James A. Harrison II, Major, USAF, Retired MBA, BS Electronics, Associate Education First Class Engineers License First Class Technician License Mensa ----Uh I think Concert Viola ---Oh yeah,,,,,Unemployed - -----Original Message----- From: Jim Brick <jimbrick@photoaccess.com> To: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us> Date: Monday, February 01, 1999 7:17 PM Subject: [Leica] Pixel Beyer pattern >You didn't want an answer??? I presumed you asked the question in order to >get an answer??? The R means RED, the G means Green, and the B means BLUE. >This is the arrangement of R (red) G (green), and B (blue) pixels. Did you >read something else??? This "Beyer" pattern is how most sensors are made. >There are a few odd sensors (eg; interleaved, parallel quadrants, etc.) > >Beyer Pattern: >R G R G R G R G R G R G... (pixel row 0) >G B G B G B G B G B G B... (row 1) >R G R G R G R G R G R G... (row 2) >G B G B G B G B G B G B... (row 3) >...(etc) >. >. > >Jim > >At 06:54 PM 2/1/99 -0600, you wrote: >> >> Hey; back off; I was asking a question because I didn't know;;;jh >> >> >>>It's not "MY" system. That's the way sensor manufacturers make sensors. The >>>eye is twice as sensitive to green as any other color (according to the >>>experts) and this must be accounted for. It also makes it easy to make a >>>pixel block. >>> >>>R G >>>G B >>> >>>All even rows are R G R G R G R G... all odd rows are G B G B G B G B. So >>>to make a "real" pixel, a square block of four pixels: >>> >>>R G >>>G B >>> >>>make up a real pixel. >>> >>>Jim >>> >>> >>>At 06:29 PM 2/1/99 -0600, you wrote: >>>>Jim Brick: I'm am curious; why does your system require two green >>sensors? >>>>When I shot crime photos for the US Air Force we used, and they still use, >>>>conventional C-41. They used to only use black and white but I convinced >>>>the cops color would impress a jury more than a black and white photo. >>When >>>>some bozo colonel ordered Kodak digital cameras for us to use, I reminded >>>>him that DOD prohibited taking crime scene/accident photos with anything >>but >>>>real film;;;chain of custody etc. You can do some scary stuff with >>>>Photoshop;;I used a M2 to photograph an aircraft crash into a civ >>apartment >>>>complex. Raining, local civ photogs used fancy electronic camera that >>>>failed; I just kept on shooting;;;jh >>>> >>>> >>>>James A. Harrison II, Major, USAF, Retired >>>>MBA, BS Electronics, Associate Education >>>>First Class Engineers License >>>>First Class Technician License >>>>Mensa >>>>Concert Viola ---Oh yeah,,,,,Unemployed >>>> >>>> >>>> >>> >> >> >