Winscale: an image-scaling algorithm using an area pixel model

We propose a new scaling algorithm, winscale, which performs the scale up/down transform using an area pixel model rather than a point pixel model. The proposed algorithm has low complexity: the algorithm uses a maximum of four pixels of an original image to calculate one pixel of a scaled image. Ne...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems for video technology 2003-06, Vol.13 (6), p.549-553
Main Authors: KIM, Chun-Ho, SEONG, Si-Mun, LEE, Jin-Aeon, KIM, Lee-Sup
Format: Article
Language:English
Subjects:
Algorithms
Applied sciences
Complexity
Costs
Digital
Display devices
Exact sciences and technology
Flat panel displays
Graphics
Hardware
Image converters
Image processing
Image quality
Image resolution
Information, signal and communications theory
Liquid crystal displays
Pixel
Pixels
Signal processing
Streaming media
Telecommunications and information theory
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Summary:We propose a new scaling algorithm, winscale, which performs the scale up/down transform using an area pixel model rather than a point pixel model. The proposed algorithm has low complexity: the algorithm uses a maximum of four pixels of an original image to calculate one pixel of a scaled image. Nevertheless, the algorithm has good characteristics such as fine-edge and changeable smoothness. We implemented a hardware design of winscale using an FPGA and displayed some test scenes in an liquid crystal display panel using a digital visual interface. The hardware cost and the image quality were compared with those of the conventional image scaling algorithms. It is proved that winscale has good scale property with low complexity. Winscale can be used in various digital display devices that need image scaling, especially in applications that require good image quality with low hardware cost.
ISSN:1051-8215
1558-2205
DOI:10.1109/TCSVT.2003.813431