@phdthesis{Gooch:2006:PSM,
  opturl = {},
  month = jun,
  optwww = {},
  author = {Amy Ashurst Gooch},
  optkey = {},
  optannote = {},
  opttype = {},
  title = {{P}reserving {S}alience {B}y {M}aintaining {P}erceptual {D}ifferences
           for {I}mage {C}reation and {M}anipulation},
  abstract = {Image creation is an attempt to record a scene for presentation to
              a viewer. However, there is a precarious mapping between how a
              scene would be perceived and how an image is perceived. For
              example, although the human visual system does not have a strong
              absolute sense of color or intensity, images are stored as a
              discrete set of color or intensity values at each pixel. The goal
              of this dissertation is to create perceptually salient images by
              more directly expressing perceived differences in scenes as
              displayed differences in images. This dissertation examines two
              methods of perceptual difference preservation for two
              long-standing problems: 1) a color to grayscale conversion
              algorithm that preserves all visible color changes through
              high-dimensional distance metrics; 2) hidden feature finding
              techniques that identify correspondences and mismatches between
              X-ray and visible light images of historically significant
              paintings through segmentation and local gradient statistics.},
  school = {Northwestern University},
  address = {Evanston, Illinois, USA},
  localfile = {papers/Gooch.2006.PSM.pdf},
  year = {2006},
}