Binary Patent Image Retrieval Using the Hierarchical Oriented Gradient Histogram

Hui Ni, Zhenhua Guo, Biqing Huang. Binary Patent Image Retrieval Using the Hierarchical Oriented Gradient Histogram. In International Conference on Service Science, ICSS 2015, Weihai, Shandong, China, May 8-9, 2015. pages 23-27, IEEE, 2015. [doi]

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