An Improved Bilinear Interpolation Algorithm Using Center Coordinates of Pixels

How to guarantee high image quality is the key point when converting standard-definition television (SDTV) images to high-defmition television (HDTV) images. Unfortunately, the change of pixel shape from rectangular to square makes traditional interpolation methods inappropriate because traditional...

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Bibliographic Details
Published in:Sensors & transducers Vol. 19; no. 2; p. 89
Main Authors: Lu, Jing, Xia, Min, Li, Wei, Yang, Ke-Cheng
Format: Journal Article
Language:English
Published: Toronto IFSA Publishing, S.L 01.02.2013
Subjects:
Algorithms
Color
Digital video
HDTV
High definition television
Image quality
Interpolation
Methods
Neighborhoods
Pixels
Quality
Television
ISSN:2306-8515, 1726-5479, 1726-5479
Online Access:Get full text
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Summary:How to guarantee high image quality is the key point when converting standard-definition television (SDTV) images to high-defmition television (HDTV) images. Unfortunately, the change of pixel shape from rectangular to square makes traditional interpolation methods inappropriate because traditional methods are based on integer coordinates. In this paper, a novel interpolation algorithm using center coordinates of pixels (IAUCCP) is proposed. The color value of each pixel on HDTV images is revised by correcting the pixel's xy coordinates. Considering the huge enlarging multiples, sharpening treatment is done to the HDTV images after interpolating. Experiments show that our method greatly improves the HDTV image quality comparing with traditional interpolation algorithms. [PUBLICATION ABSTRACT]
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ISSN:2306-8515
1726-5479
1726-5479