11 Feb 2004*
CS3243 - Optional Lecture - Vision
7
Low-level Vision
lSmoothing: removing
extreme values from the image.
lGaussian filter: replacing the original pixel I(x0, y0) by summation
of I(x, y)Gσ(d) over all pixels, where:
, in one dimension.
, in two dimensions.
And d is the distance between pixel (x, y) and (x0,
y0)
lConvolution: h
= f * g (Weighted sum)
