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SPam over Internet Telephony (SPIT) had been become a very serious issue in recent years. The threat is going to spin out from the well known email spam problem by bot nets being reprogrammed to initiate not just spam emails but also Voice over IP (VoIP) calls. Preventing SPIT is a new problem, because many well-established methods for blocking email spam cannot be applied. Though the need for SPIT...
For image-based mapping we need clip, stitching and projection transformation to the images of GE and get accurate registration with other types of geographic information. This paper analysed the layered organizing method of GE images. Through processing the GE images and getting pixel value the transformation of Mercator projection and Gauss projection and the resample method of image pixel are studyed...
To solve the false acceptance problem in speaker recognition, definition of similar centroids among all reference speakers' codebooks and similarity between each two speakers are given. A triple is introduced to mark each centroid with the description of similar centroids. And such triple is used to modify the target function in the fuzzy kernel vector quantization speaker recognition, in which the...
In recent years, with the widely application of speaker recognition, besides recognition precision, people pay more attention to processing speed. The traditional recognition frame which directly uses acoustic feature sequence to match the model of target speaker doesn't work well in real time environment. So new recognition frame based on the statistic of acoustic feature sequence has arisen. By...
How to decrease false acceptance rate is an ever-lasting target in speaker identification system. This paper proposes a new method based on the thought of discriminative weighting, which is realized by previously distributing a discriminative weighted value vector between each two speakers. The improved algorithm means to calculate discriminative weighted values based on the difference between each...
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