3. Defocusing blur
3.1 Introduction
Outside the zone of sharpness, objects seen by an imager appear with a defocusing blur (DFD) that increases with the distance between the object and the plane of focus (figure 12 ). In this diagram, the plane of focus passes through the point of convergence of the green rays: objects located in this plane appear sharp in the image. In contrast, an object located beyond the plane of focus produces a blurred image, as the red rays do not converge at a point on the image plane. The width of the blur, noted ε in figure 12 , can be estimated as a function of the depth Z by geometric considerations and using the conjugation relation...
The Ultimate Scientific and Technical Reference
This article is included in
Optics and photonics
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Defocusing blur
Plenoptic camera
Bibliography
Patents
Method for designing a passive single-channel imager capable of estimating depth of field, Pauline TROUVE, Frédéric CHAMPAGNAT, BESNERAIS Guy LE, Guillaume Druart, EP 2909671 A1, WO2014060657A1, 2013
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
Gom ( http://www.gom.com/ ): 3D stereoscopic measurement systems, including the Aramis system, for industrial and research applications.
Google Tango: a project to integrate 3D functionalities into smartphone-type mobile platforms,...
The Ultimate Scientific and Technical Reference
