한국정보통신설비학회:학술대회논문집
- 2009.08a
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- Pages.143-146
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- 2009
A New Method for Robust and Secure Image Hash Improved FJLT
- Xiu, Anna (Korea University Multimedia Security Lab) ;
- Kim, Hyoung-Joong (Korea University Multimedia Security Lab)
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- 김형중 (고려대)
- Published : 2009.08.27
Abstract
There are some image hash methods, in the paper four image hash methods have been compared: FJLT (Fast Johnson- Lindenstrauss Transform), SVD (Singular Value Decomposition), NMF (Non-Negative Matrix Factorization), FP (Feature Point). From the compared result, FJLT method can't be used in the online. the search time is very slow because of the KNN algorithm. So FJLT method has been improved in the paper.