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

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4 Author(s)
Chun-Ho Kim ; Dept. of Electron. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea ; Si-Mun Seong ; Jin-Aeon Lee ; Lee-Sup Kim

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.

Published in:

Circuits and Systems for Video Technology, IEEE Transactions on  (Volume:13 ,  Issue: 6 )

Date of Publication:

June 2003

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