Similarity-based breast image matching image searching method and system
A technology of image retrieval and similarity, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of missing tumor areas and inaccurate tumor locations, so as to reduce capacity storage, improve retrieval efficiency, and speed up speed effect
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[0084] The image library used in this embodiment is a breast image library of a hospital in Xi'an, which contains 2560 mammograms in total.
[0085] First, follow step 1 to extract the SIFT feature block of each mammogram, and extract the HOG feature of each feature block. Follow step 2 to establish a search database. In this embodiment, the number of sub-nodes generated by each node is K=3; the threshold of the number of layers of the hierarchical clustering tree is depth=4.
[0086] Secondly, for any input breast image to be retrieved, perform retrieval according to step 3 and step 4. Figure 8 Shows a complete retrieval process. among them, Figure 8 (a) is an input image to be retrieved, Figure 8 (b) is all the SIFT feature blocks extracted by the SIFT algorithm in step 3, a total of 631. In this embodiment, the SIFT feature block that meets the specified scale refers to the SIFT feature block that is not smaller than 32×32 pixels. Therefore, SIFT featu...
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