Graphics & Visualization Chapter 18 Davies Computer Vision Edition Solutions Selected Problems With Loss Generality Can Take

subject Type Homework Help
subject Pages 3
subject Words 499
subject Authors E. R. Davies

Unlock document.

This document is partially blurred.
Unlock all pages and 1 million more documents.
Get Access
page-pf1
page-pf2
Davies: Computer Vision, 5th edition: Solutions to selected problems 40
Hence we find:
(b) The derived equation shows that the cross ratio on the left would be the same for any
18.5
(a) Invariants are measures that are invariant to certain transformations such as
translation and rotation. They are able to help characterize objects uniquely irrespective of
(b) The ratio idea is to overcome problems of scale in imaging by finding ratios of
distances. The ratio of ratios idea is to overcome problems of projection angle by finding
ratios of ratios in some sense, the way this is realized being by means of the cross ratio.
(c) Weak perspective projection is the special case of full perspective projection in the
limit Z << Z, so that the cross-ratio concept must still be valid. Under weak perspective
(d) The same concept will carry over to lengths measured on parallel lines, as the
orientations of both lines are identical in 3D space, so again projection does not affect the
page-pf3

Trusted by Thousands of
Students

Here are what students say about us.

Copyright ©2022 All rights reserved. | CoursePaper is not sponsored or endorsed by any college or university.