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• Bosco, A
• Battiato, S
• Bruna, A
• Rizzo, R
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• Battiato, S
• Bruna, A
• Rizzo, R
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• Battiato, S
• Bruna, A
• Rizzo, R

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

Article

Noise Reduction for CFA Image Sensors Exploiting HVS Behaviour

Angelo Bosco ^1,* , Sebastiano Battiato ² , Arcangelo Bruna ¹  and Rosetta Rizzo 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; in revised form: 4 March 2009 / Accepted: 9 March 2009 / Published: 10 March 2009

(This article belongs to the Special Issue Integrated High-performance Imagers)

Download PDF Full-Text [847 KB, uploaded 10 March 2009 16:18 CET]

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

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