An Improved Bilinear Interpolation Algorithm of Converting Standard-Definition Television Images to High-Definition Television Images

It's very hard to guarantee high image quality whenconverting standard-definition television (SDTV) images tohigh-definition television (HDTV) images because of the greatdifference of image resolution between them. Moreover, thechange in pixel shape from rectangular to square makes thetradition...

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Bibliographic Details
Published in:ICIE 2009 : 2009 WASE International Conference on Information Engineering :10-11 July 2009, Taiyuan, Shanxi, China Vol. 2; pp. 441 - 444
Main Authors: Lu Jing, Si Xiong, Wu Shihong
Format: Conference Proceeding
Language:English
Published: IEEE 01.07.2009
Subjects:
Bilinear Interpolation
Center Coordinates of Pixels
Color
Computer science
Computer science education
Educational technology
HDTV
Image converters
Image Zooming
Interpolation
Pixel
SDTV
Shape
ISBN:9780769536798, 0769536794
Online Access:Get full text
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Summary:It's very hard to guarantee high image quality whenconverting standard-definition television (SDTV) images tohigh-definition television (HDTV) images because of the greatdifference of image resolution between them. Moreover, thechange in pixel shape from rectangular to square makes thetraditional image zooming methods impossible to do theconversion. Based on this reason, we propose an ImprovedBilinear Interpolation Algorithm: using the CenterCoordinates of Pixels to do bilinear interpolation (IBIACCP).This method can correct the color values of HDTV images bycorrecting the pixels' x and y coordinates since a pixel's colorvalue is a function of its x and y coordinates in interpolationalgorithms. Considering the huge enlarging multiples, we dosharpening treatment to the HDTV images after theinterpolation. Experiments show that IBIACCP can greatlyimprove the quality of HDTV images comparing withtraditional bilinear interpolation algorithm.
ISBN:9780769536798
0769536794
DOI:10.1109/ICIE.2009.251