Fake fingerprint detection method based on markov random field (MRF) and support vector machine-k nearest neighbor (SVM-KNN) classification
A detection method and technology of false fingerprints, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems of reduced classification accuracy and increased cost of collectors, etc.
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[0086] The present invention will be further described below in conjunction with the accompanying drawings.
[0087] The following content looks almost exactly the same as the previous content, is there any problem?
[0088] refer to Figure 1-3 , a kind of false fingerprint detection method based on MRF and SVM-KNN classification, described method comprises the following steps:
[0089] 1) Feature extraction
[0090] 1.1) First-order statistics (FOS)
[0091] It is used to measure the probability of a gray value appearing at a random position in the image, and the correlation between pixels can indicate the authenticity of the fingerprint. Calculate the degree of change between pixels through the histogram, and extract the FOS. The goal is to quantify the change of the gray level distribution when the physical structure of the image changes, and then distinguish the true and false fingerprints. Assuming that H(n) is a normalized histogram, N represents the maximum gray le...
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