콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Automatic Mura Detection for Display Film Using Mark Filtering in Wavelet Transform
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2015-03
- 저자명 Jong-Seung Park, Seung-ho Lee
- 학술지명 IEICE Transactions on Information and Systems
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 2
- 연구분야 공학 > 전자/정보통신공학
논문 초록 (Abstract)
In this letter, we present a method for automatic mura detection for display film using the efficient decision of cut-off frequency with DCT and mask filtering with wavelet transform. First, the background image including reflected light is estimated using DCT with adaptive cut-off frequency, and DWT is applied to background-removed images for generating mura mask. Then, a mura mask is generated by separating lowfrequency noise in the approximation coefficients. Lastly, mura is detected by applying mura mask filtering to the detail coefficients. According to the comparison by Semu index, the results from the proposed method are superior to those from the existing methods. This indicates that the proposed method is high in reliability.
