id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
american_scientific_journal-6650	Ouahi, Hassan ; Mazoul, Abdenbi 	Adaptive Image Watermarking based on K-NN Clustering	2021	11	.pdf	application/pdf	2907	167	56	The comparison of various algorithms and challenges of those algorithms are listed in the table 1 Table 1: Features and challenges of image watermarking based on clustering methods Author Used Method Features Challenges Wei-che and his colleagues FCM • Used for tamper • Restoration of tampered detection regions cannot be done • Watermark image is • Eventually, they demonstrated that their approach has better performance compared to embedding watermark in the spatial domain.	cache/american_scientific_journal-6650.pdf	txt/american_scientific_journal-6650.txt