지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2013.11
- 수록면
- 470 - 473 (4page)
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초록· 키워드
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Taking pictures of LCD monitor using digital camera can produce unwanted artifacts such as moire pattern. This aliasing problem happens because of the interference between fine details of LCD mask (electrical conductors) and sensels grid in camera sensor or viewing screen. To eliminate moire is to remove grid (periodic or quasi-periodic pattern) in image which is represented by peaks in image spectrum amplitude. A peak detection framework based on median filter and region growing in frequency domain is introduced in this paper. The ratio of the coefficient-of-interest to the median is calculated, compared to a threshold, and any wide hills are covered with a region growing algorithm in order to define moire frequency coefficients. The Fourier coefficients of detected peaks are corrected using local Gaussian notch filter.
목차
Abstract
Ⅰ. Introduction
Ⅱ. Spectrum Peak Detection
Ⅲ. Local Gaussian Notch Filter
Ⅳ. Simulation and Results
Ⅴ. Conclusion
References
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