Iris identifying method based on ripple analysis and zero passage description
A wavelet analysis, zero-crossing technology, applied in the field of pattern recognition, can solve the problems of non-conformity, easy to counterfeit, easy to forget, etc., to achieve the effect of small calculation, reduced dimension and fast speed
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[0060] Example 1: Identification based on iris recognition
[0061] The iris recognition method based on wavelet analysis and zero-crossing description proposed by the present invention can be applied in various identification systems, combining figure 2 The description of the usage process is as follows:
[0062] 1) For the input original iris image, preprocessing is performed first, including iris location, normalization, image enhancement and denoising, such as image 3 shown.
[0063] 2) By down-sampling, multiple one-dimensional signals are used to represent the most important and distinguishing information in the two-dimensional iris image. A special wavelet is used to obtain the description of the zero-crossing point of the down-sampled one-dimensional signal at multiple resolutions, and quantify it to obtain a binary feature vector.
[0064] 3) At this time, it can be matched with the feature vectors representing different irises in the database to obtain the recog...
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