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Sensors 2009, 9(3), 1692-1713; doi:10.3390/s90301692
Article

Noise Reduction for CFA Image Sensors Exploiting HVS Behaviour

1,* , 2
, 1
 and 2
1 STMicroelectronics, Stradale Primosole 50, 95121 Catania, Italy 2 Università di Catania, Dipartimento di Matematica ed Informatica, Viale A. Doria 6, 95125 Catania, Italy
* Author to whom correspondence should be addressed.
Received: 18 December 2008 / Revised: 4 March 2009 / Accepted: 9 March 2009 / Published: 10 March 2009
(This article belongs to the Special Issue Integrated High-performance Imagers)

Abstract

This paper presents a spatial noise reduction technique designed to work on CFA (Color Filtering Array) data acquired by CCD/CMOS image sensors. The overall processing preserves image details using some heuristics related to the HVS (Human Visual System); estimates of local texture degree and noise levels are computed to regulate the filter smoothing capability. Experimental results confirm the effectiveness of the proposed technique. The method is also suitable for implementation in low power mobile devices with imaging capabilities such as camera phones and PDAs.
Keywords: Noise Reduction; Color Filter Array; HVS; Texture Detection Noise Reduction; Color Filter Array; HVS; Texture Detection
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.

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MDPI and ACS Style

Bosco, A.; Battiato, S.; Bruna, A.; Rizzo, R. Noise Reduction for CFA Image Sensors Exploiting HVS Behaviour. Sensors 2009, 9, 1692-1713.

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