摘要：In order to overcome the disadvantages of traditional image retrieval algorithms such as inefficiency and time-consuming, an image retrieval algorithm based on DCT Hash is proposed. In this paper, the discrete cosine transform technique is applied to image retrieval. Firstly, the feature hash sequence is generated by computing the DCT transform component of the image based on annular segmentation. Then an image Hash algorithm based on DCT feature Hash sequence is proposed. Experimental results show that the algorithm is robust to image scaling, rotation, noise processing, and has good retrieval performance.
