cs440-lec5-vision-filters

cs440-lec5-vision-filters - CS 440 / ECE 448 Introduction...

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CS440 / ECE 448 – Spring 2008 Lecture #5 CS 440 / ECE 448 Introduction to Artificial Intelligence Spring 2008 Instructor: Eyal Amir
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CS440 / ECE 448 – Spring 2008 Lecture #5 Today: Computer Vision Vision tasks Given an image or a set of images formed by a camera or another sensor (e.g., laser) Identify objects Identify scene Identify actions Localize the above Vision seems deceptively easy
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CS440 / ECE 448 – Spring 2008 Lecture #5 Face Camel Bug Human/Felix Joe Barbara Steele Problem: Recognizing instances Recognizing categories
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CS440 / ECE 448 – Spring 2008 Lecture #5
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CS440 / ECE 448 – Spring 2008 Lecture #5 Variability : Camera position Illumination Internal parameters Within-class variations
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CS440 / ECE 448 – Spring 2008 Lecture #5 Object Recognition How to detect the class of object and its identity mechanically? Canonical, invariant representation? Eliminate most of the parameters that govern appearance? Work with the raw pixels? How do we use prior knowledge about the domain? Scale, location, possible objects, texture
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CS440 / ECE 448 – Spring 2008 Lecture #5 Processing an Image Image : array of pixels Features: lines, shapes, invariants, colors, positions, histograms Transformation to real-world, 3D coordinates Segmentation, aggregation matching against prototype/class Localizing
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cs440-lec5-vision-filters - CS 440 / ECE 448 Introduction...

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