Distinctive Image Features from Scale-Invariant Keypoints
International Journal of Computer Vision
An efficient parts-based near-duplicate and sub-image retrieval system
Proceedings of the 12th annual ACM international conference on Multimedia
Scale-rotation invariant pattern entropy for keypoint-based near-duplicate detection
IEEE Transactions on Image Processing
Online Learning for Matrix Factorization and Sparse Coding
The Journal of Machine Learning Research
-SVD: An Algorithm for Designing Overcomplete Dictionaries for Sparse Representation
IEEE Transactions on Signal Processing
A New Approach to Image Copy Detection Based on Extended Feature Sets
IEEE Transactions on Image Processing
Feature-Based Sparse Representation for Image Similarity Assessment
IEEE Transactions on Multimedia
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Image copy detection is an art of searching duplicates from a target database. Computationally efficient and robust detection is still a challenging issue. Inspired by the recent study of sparsity in the context of compressed sensing, we propose a sparse representation-based image copy detection method exploiting sparsity as the cue for searching duplicates. We find that although sparse representation can describe an image in a compact manner, the inherent discriminable features, as far as we know, are not entirely explored. In this paper, we study the discrimination ability inherent in sparsity via online dictionary learning and compact feature descriptor representation. Experimental results show that our method, compared with state-of-the-art, is computationally efficient and attains better or comparable detection performance measured in terms of precision and recall rates.