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Digital Image Processing ECE.09.452/ECE.09.552 Fall 2007. Lecture 1 September 10, 2007. Shreekanth Mandayam ECE Department Rowan University http://engineering.rowan.edu/~shreek/fall07/dip/. http://www.apple.com/iphone/.
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Digital Image ProcessingECE.09.452/ECE.09.552Fall 2007 Lecture 1September 10, 2007 Shreekanth Mandayam ECE Department Rowan University http://engineering.rowan.edu/~shreek/fall07/dip/
Hurricane Katrina regional imagery, 2005.08.29 at 1215Z. Centerpoint Latitude: 31:10:43N Longitude: 88:50:53W.
Plan • What is an image? • Mathematical representation of monochromatic images • What is a digital image? • Digital image processing • Fundamental steps • Why do we need this? • Course logistics • Self-Assessment Test • Sampling & Quantization • Image Preprocessing • Pre-Lab 1
column f(x, y) row y x Images Sample Quantize
Digital Image y x Gray Level f(x,y)
M B R W Y C G Color Images Mixtures of Light: Additive Primaries
B B G G R+G+B R+G+B R R B G R+G+B R B G R+G+B B R G R+G+B R B G R+G+B R
Fundamental Steps Representation & Description Preprocessing Segmentation Knowledge Base Problem Domain Image Acquisition Recognition & Interpretation Result
The Human Eye Sagittal section of adult human eye Section of human retina http://webvision.med.utah.edu/anatomy.html
DIP: Course Logistics http://engineering.rowan.edu/~shreek/fall07/dip/
Sampling & Quantization • Sampling demos/demo1sampling_and_quantization/demo_sampling.m • Quantization demos/demo1sampling_and_quantization/demo_quant.m
Image Preprocessing Restoration Enhancement • Inverse filtering • Wiener filtering Spectral Domain Spatial Domain • Filtering • >>fft2/ifft2 • >>fftshift • Point Processing • >>imadjust • >>histeq • Spatial filtering • >>filter2
Point Processing(Intensity Transformation) s(x,y) = T{ r(x,y)} Transformed Gray Level Original Gray Level Transformation Function >>imadjdemo >>imadjust
Pre-Lab 1: Intro to Matlab IP Toolbox http://engineering.rowan.edu/~shreek/fall07/dip/ipintro.html