Trademark image identification method
An image recognition and trademark technology, applied in the field of visual target detection and recognition, can solve the problems of no filtering, no false matching elimination method, etc., and achieve the effects of fast recognition speed, reduced time complexity, and improved recognition accuracy
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[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific examples.
[0028] The present invention is a trademark image recognition method, and its technical process is as follows: figure 1 and figure 2 As shown, it specifically includes the following steps:
[0029] (1) Prepare positive samples and extract visual features
[0030] Prepare a certain number of training samples for each trademark to be recognized, and extract a local feature from these training samples, such as SIFT feature or SURF feature, and then cluster and quantify the extracted features to obtain the visual word representation of key points , as shown in Formula 1:
[0031] Formula 1: k={P(k), S(k), I(k)}
[0032] Among them, k represents the kth key point, P(k) represents the position, S(k) represents the scale, and I(k) represents the nearest cluster center.
[0033] (2) Feature selection based on mutual information
[0034] F...
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