Abstract：Existing hashing methods can hardly realize the approximate mapping of the original feature space quickly.Therefore,a hashing method based on wavelet projection is proposed.Firstly,the projection matrix is constructed based on Haar wavelet transform.The projection matrix is optimized iteratively and binary codes are optimized by discrete method to control the quantization error.Then,the projection matrix is utilized to project the original feature vector of the image into the low-dimensional space quickly and binary codes are obtained by binary embedding.Experimental results on image datasets demonstrate that the proposed method improves encoding efficiency effectively.
荣梦君, 刘惊雷. 基于小波投影和离散哈希的图像检索[J]. 模式识别与人工智能, 2020, 33(11): 1023-1032.
RONG Mengjun, LIU Jinglei. Image Retrieval Based on Wavelet Projection and Discrete Hashing. , 2020, 33(11): 1023-1032.
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2020, Vol. 33 
