Method and system for extracting image fingerprints based on representative local mode
A local pattern and image fingerprint technology, which is applied in the field of image processing, can solve the problems of poor robustness, large memory consumption, and high complexity of feature matching, and achieve the effect of fast matching speed, less memory occupied by features, and less memory occupied by global features
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[0042] The present invention proposes a method for extracting image fingerprints based on representative local patterns, the specific process of which is as follows: figure 1 As shown, the main process of the present invention is divided into three stages: training stage, database building stage and online query stage. The three stages include image preprocessing, which is mainly to unify and smooth the size of the original image. The main steps of the three stages are introduced below:
[0043] Training stage: This stage is mainly to perform various image attack simulation processing on the library image, mainly including scale change, subtitle or logo embedding, cropping, blurring, etc., and then use the FAST algorithm to extract key points in the image, (“key point” refers to The most important thing is the local structure that contains important information in the image. For example, the eyes and nose of the face are more prominent than the forehead and contain more inform...
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