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Hashing을 이용한 불법 복제 콘텐츠 검출을 위한 내용 기반 영상 검색
손희수(Heusu Son),변성우(Sung-Woo Byun),이석필(Soek-Pil Lee) 대한전기학회 2018 전기학회논문지 Vol.67 No.10
As the usage of the Internet grows and digital media become more diversified, it has become much easier for digital contents to be distributed and shared. This makes easier to access the desired digital contents. On the other hand, there is an increasing need to protect the copyright of digital works. There are some prevalent ways to protect ownership, but they accompany several disadvantages. Among those ways, watermarking methods have the advantage of ensuring invisibility, but they also have a disadvantage that they are vulnerable to external attacks such as a noise and signal processing. In this paper, we propose the detecting method of illegal contents that is robust against external attacks to protect digital works. We extract HSV and LBP features from images and use Euclidian-based hashing techniques to shorten the searching time on high-dimensional and near-duplicate videos. According to the results, the proposed method showed higher detection rates than that of the Watermarking techniques in terms of the images with fabrications or deformations.
이중 주파수 대역 검출기반의 강인한 Audio Fingerprinting 시스템
손희수(Heusu Son),이석필(Soek-Pil Lee) 대한전기학회 2020 전기학회논문지 Vol.69 No.1
In this paper, we present a new audio identification system which is robust to various attacks. The types of attacks employed are modification such as changes of tempo, pitch and speed and noise addition also low and high pass filtering. We proposed a two-dimensional representation for the audio signal called FFMAP. This consists of pitch components and frame components. We also employ Pearson’s correlation score to calculate similarity between original audio data and query. Experimental results show that the proposed algorithm has a high performance.