1 Reply Latest reply on Jan 3, 2011 8:26 PM by Chris Cox

    Disable sharpening for transform/rotate image

    n8turepix Level 1

      I am doing calibration of scanners, and this involves scanning a test target film (which is never perfectly aligned) and then rotating the image slightly so it's properly aligned in the horizontal and vertical directions.  It is a requirement that the color values of the image not be altered when the image is rotated.  Photoshop's rotation transformation applies default sharpening which cannot be disabled, and this causes clipping and other changes in the color values of the image data.

       

      It would be most helpful to provide a way to disable sharpening of the image data when it's rotated.  Without it, the final color profiles are not accurate.

       

      Thanks,

       

      -Chris.

        • 1. Re: Disable sharpening for transform/rotate image
          Level 7

          You can do that by changing the interpolation method in preferences.

           

          In most cases, the image does need some sharpening in the interpolation method when rotating (otherwise it ends up looking fuzzy).

           

          It is a requirement that the color values of the image not be altered when the image is rotated.

          Technically, that is impossible except for 90 degree rotations.    Any interpolation will change the color values.