Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Optimized Image Downscaler Using Non-linear Digital Filter

비선형 디지털 필터를 이용한 최적화된 영상 축소기

  • Lee, Bonggeun (School of Electrical, Electronic, and Computer Eng., Dong-A University) ;
  • Lee, Honam (School of Electrical, Electronic, and Computer Eng., Dong-A University) ;
  • Lee, Youngho (School of Electrical, Electronic, and Computer Eng., Dong-A University) ;
  • Bongsoon Kang (School of Electrical, Electronic, and Computer Eng., Dong-A University)
  • Published : 2000.06.01
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Abstract

This paper proposes the optimized hardware architecture for a high performance image downscaler The proposed downscaler uses non-linear digital filters for horizontal and vertical scalings. In order to achieve the optimization, the filters are implemented with multiplexer-adder type scheme and all the filter coefficients are selected on the order of two's power. The performance of the scaler is also verified by comparing with a pixel drop downscaler. The proposed scaler is designed by using the VHDL and implemented by using the IDEC-C632 0.65$\mu\textrm{m}$ cell library.

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