A survey of the image copy detection

This paper presents a review of recent as well as classic image copy detection method. The reviewed methods are classified as digital watermarking and contended based copy detection. The contended based copy detection usually extracts robust features from image directly that is the main difference from the digital watermarking which features are embedded before distribute. Some new and key techniques are discussed that applied in watermarking and CBCD. Main contributions, advantages, and drawbacks of the methods are mentioned in the paper. Problematic issues of image copy detection and outlook for the future research are discussed too. The major goal of the paper is to provide a comprehensive reference source for the researchers involved in image copy detection, regardless of particular application areas.