Next Article in Journal
The Rover Environmental Monitoring Station Ground Temperature Sensor: A Pyrometer for Measuring Ground Temperature on Mars
Next Article in Special Issue
Intelligent Sensor Positioning and Orientation Through Constructive Neural Network-Embedded INS/GPS Integration Algorithms
Previous Article in Journal
Development of a Portable Electronic Nose System for the Detection and Classification of Fruity Odors
Previous Article in Special Issue
A Smart Checkpointing Scheme for Improving the Reliability of Clustering Routing Protocols
Article Menu

Export Article

Open AccessArticle
Sensors 2010, 10(10), 9194-9210;

Design of Belief Propagation Based on FPGA for the Multistereo CAFADIS Camera

Departamento de Física Fundamental y Experimental, Electrónica y Sistemas, University of La Laguna, Avd. Francisco Sanchez s/n, 38203 La Laguna, Spain
Author to whom correspondence should be addressed.
Received: 18 August 2010 / Revised: 20 September 2010 / Accepted: 29 September 2010 / Published: 15 October 2010
(This article belongs to the Special Issue Intelligent Sensors - 2010)
Full-Text   |   PDF [617 KB, uploaded 21 June 2014]   |  


In this paper we describe a fast, specialized hardware implementation of the belief propagation algorithm for the CAFADIS camera, a new plenoptic sensor patented by the University of La Laguna. This camera captures the lightfield of the scene and can be used to find out at which depth each pixel is in focus. The algorithm has been designed for FPGA devices using VHDL. We propose a parallel and pipeline architecture to implement the algorithm without external memory. Although the BRAM resources of the device increase considerably, we can maintain real-time restrictions by using extremely high-performance signal processing capability through parallelism and by accessing several memories simultaneously. The quantifying results with 16 bit precision have shown that performances are really close to the original Matlab programmed algorithm. View Full-Text
Keywords: plenoptic sensors; FPGA; real-time processing; depth estimation; multistereo plenoptic sensors; FPGA; real-time processing; depth estimation; multistereo

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Magdaleno, E.; Lüke, J.P.; Rodríguez, M.; Rodríguez-Ramos, J.M. Design of Belief Propagation Based on FPGA for the Multistereo CAFADIS Camera. Sensors 2010, 10, 9194-9210.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top