Chrominance Assisted Sharpening of Images

Document type: Researchreports
Full text:
Author(s): Andreas Nilsson
Title: Chrominance Assisted Sharpening of Images
Translated title: Skärpning av bilder med hjälp av färgdatan
Series: Research Report
Year: 2004
Issue: 8
ISSN: 1103-1581
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Signal Processing (Sektionen för teknik – avd. för signalbehandling)
School of Engineering S- 372 25 Ronneby
+46 455 38 50 00
Authors e-mail:
Language: English
Abstract: This paper presents a method to sharpen an image with less amplification of the noise than conventional methods. The proposed design method uses unsharp filtering for the sharpening part and differences in the chrominance data to decide if sharpening should be performed or not. The basic idea is to only do the sharpening if there are any changes in the chrominance information. Examples are included of sharpened images with less amplification of the noise.
Subject: Signal Processing\General
Keywords: image, enhancement, chrominance, sharpening
URN: urn:nbn:se:bth-00249