level.slides.printing

level.slides.printing - Level Operations (Part 1) Level...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Level Operations (Part 1) Level Operations (Part 1) CS 450: Introduction to Digital Signal and Image Processing
Background image of page 1

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

View Full DocumentRight Arrow Icon
Level Operations (Part 1) Introduction Point Processing I Simplest kind of enhancement: point operations. Process each point independently of the others. I All you can do is remap the sample’s value: s = T ( r ) where I r is the value at the point in question I s is the new value in the processed result I T is a grey-level transformation or level operation
Background image of page 2
Level Operations (Part 1) Linear Operations Adding a Constant Simplest level operation: s = r + c for some constant c . c > 0 Brighter Image c < 0 Darker Image
Background image of page 3

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

View Full DocumentRight Arrow Icon
Level Operations (Part 1) Linear Operations Amplification (Gain) Another simple level operation is amplification (multiplication): s = ar where I r is the input signal level I a is the amplification gain a > 1 amplifies the signal (louder/more constrast) a < 1 diminishes it (softer/less contrast)
Background image of page 4
Level Operations (Part 1) Linear Operations Linear Level Operators Linear operators combine gain (multiplication) and offset (addition): s = ar + c where I a is the gain I c is the offset
Background image of page 5

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

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/02/2012 for the course C S 450 taught by Professor Morse,b during the Winter '08 term at BYU.

Page1 / 19

level.slides.printing - Level Operations (Part 1) Level...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online