Open Access

Smart Camera Based on Embedded HW/SW Coprocessor

  • Romuald Mosqueron1Email author,
  • Julien Dubois2,
  • Marco Mattavelli1 and
  • David Mauvilet1
EURASIP Journal on Embedded Systems20082008:597872

DOI: 10.1155/2008/597872

Received: 1 March 2008

Accepted: 8 September 2008

Published: 26 October 2008

Abstract

This paper describes an image acquisition and a processing system based on a new coprocessor architecture designed for CMOS sensor imaging. The system exploits the full potential CMOS selective access imaging technology because the coprocessor unit is integrated into the image acquisition loop. The acquisition and coprocessing architecture are compatible with the majority of CMOS sensors. It enables the dynamic selection of a wide variety of acquisition modes as well as the reconfiguration and implementation of high-performance image preprocessing algorithms (calibration, filtering, denoising, binarization, pattern recognition). Furthermore, the processing and data transfer, from the CMOS sensor to the processor, can be operated simultaneously to increase achievable performances. The coprocessor architecture has been designed so as to obtain a unit that can be configured on the fly, in terms of type and number of chained processing stages (up to 8 successive predefined preprocessing stages), during the image acquisition process that can be defined by the user according to each specific application requirement. Examples of acquisition and processing performances are reported and compared to classical image acquisition systems based on standard modular PC platforms. The experimental results show a considerable increase of the achievable performances.

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Authors’ Affiliations

(1)
GR-LSM, Faculté STI, Ecole Polytechnique Fédérale de Lausanne (EPFL)
(2)
Laboratoire LE2I, Faculté des Sciences Mirande, Université de Bourgogne

Copyright

© Romuald Mosqueron et al. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.