대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

위상 보정된 웨이블릿 변환을 이용한 영상확대

Image Interpolation Using Phase-Shifted Wavelet Transforms

  • Kim, Sang-Soo (Dept. of Electronic Engineering, Pusan National University) ;
  • Eom, Il-Kyu (Dept. of Info. & Comm. Engineering, Miryang National University) ;
  • Kim, Yoo-Shin (Dept. of Electronic Engineering, Pusan National University)
  • 발행 : 2005.11.26
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Parameter estimation for the probability model of wavelet coefficients is essential to the wavelet-domain interpolation. However, phase uncertainty, one well-known drawback of the orthogonal wavelet transforms, make it difficult to estimate parameters. In this paper, we exploit a phase shifting matrix in order to improve the accuracy of estimation. Nonlinear modeling to capture the interscale characteristics is also described. The experimental results show that the proposed method outperforms the previous wavelet-domain interpolation method as well as the conventional bicubic method.

키워드