Presentation03 - Computer Vision Lecture #3 Hossam...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Computer Vision Lecture #3 Hossam Abdelmunim 1 2 1 Computer & Systems Engineering Department, Ain Shams University, Cairo, Egypt 2 Electerical and Computer Engineering Department, University of Louisville, Louisville, KY, USA ECE619/645 – Spring 2011
Background image of page 1

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

View Full DocumentRight Arrow Icon
Brightness and Color
Background image of page 2
Brightness of a Surface Related to • power emitted by source (across all wavelengths) • power received by surface • power reflected by surface • power refracted by lens and received by eye or camera sensors
Background image of page 3

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

View Full DocumentRight Arrow Icon
Solid Angle
Background image of page 4
Infinitesimal solid angle from a point to a tilted patch
Background image of page 5

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

View Full DocumentRight Arrow Icon
Radiance • Radiance L(θ 1 ) is power (energy flux) emitted per unit area into a cone having unit solid angle • Area used is foreshortened area in direction θ 1
Background image of page 6
Radiant Intensity • Radiant intensity is integral of radiance with respect to dA over the area of radiant material • Radiant intensity is the flux of energy (power) radiated per steradian. It is measured in W/sr • I = dP / dω Bulb is a point source when far away.
Background image of page 7

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

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/12/2012 for the course ECE 618 taught by Professor Amini during the Spring '08 term at University of Louisville.

Page1 / 21

Presentation03 - Computer Vision Lecture #3 Hossam...

This preview shows document pages 1 - 8. Sign up to view the full document.

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