04-2 - Using frequency filters

04-2 - Using frequency filters - Using frequency domain...

Info icon This preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
4/28/2008 1 Using frequency domain filters Spring 2008 ELEN 4304/5365 DIP 1 by Gleb V. Tcheslavski: [email protected] Image smoothing - ILPF 0 1 ( , ) ( ) D u v D H An ideal low-pass filter (ILPF) is specified as 0 ( , ) 0 ( , ) H u v D u v D = > Here D 0 is a positive constant and D ( u,v ) is the distance between the origin and the point ( u,v ) in the frequency domain: ( ) ( ) 2 2 ( , ) 2 2 D u v u P v Q = + Spring 2008 ELEN 4304/5365 DIP 2 P and Q are sizes of the zero-padded image.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon