Loading ...
Sorry, an error occurred while loading the content.
 

Re: different pixel size from RAW files

Expand Messages
  • prague
    Thanks Erik, Daniel, and Michel for the great explanations! So, Daniel, in dcraw, is there a way to turn off these bonus pixels? I don t want them :-)
    Message 1 of 10 , Feb 2, 2010
      Thanks Erik, Daniel, and Michel for the great explanations!

      So, Daniel, in dcraw, is there a way to turn off these "bonus" pixels? I don't want them :-)


      --- In PanoToolsNG@yahoogroups.com, Michel THOBY <thobymichel@...> wrote:
      >
      >
      > > Message du 01/02/10 22:36
      > > De : "Michel THOBY"
      >
      > ....correction of TCA may induce a (minuscule) problem on two edges of the rectangular image: the TCA correction shifts the Red channel and the Blue channel with respect to the fixed Green channel. If the shift is applied on the final "cropped" image, then some rows of pixels are only two-channels stacked along two sides of this image.
      >
      > I must correct my wrong statement: TCA is due to difference in the respective size of the three (R,V and B) channels: the aberration increases along the radius and is nil at the center of the image. Two of the channels (often R and B) are re-sized to fit with the third (G). Consequently, the defect that may occur after correction, affects ALL four edges of the image.
      >
      > Michel
      >
    Your message has been successfully submitted and would be delivered to recipients shortly.