
Image structure
5
Don't confuse PSF with
progressive segmented-frame
(PsF), described on page 62.
Figure 5.1 "Box"
reconstruc-
tion
of a bitmapped graphic
image is shown.
A naive approach to digital imaging treats the image as
a matrix of independent pixels, disregarding the spatial
distribution of light intensity across each pixel. You
might think that optimum image quality is obtained
when there is no overlap between the distributions of
neighboring pixels; many computer engineers hold this
view. However, continuous-tone images are best repro-
duced if there is a certain degree of ...