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Video leaking signal detection is an important part of TEMPEST, which is the technologies research focus on the investigations and studies of compromising emanations. A novel video leaking signal detection algorithm based on spectral centroid has been developed. Using the property that spectral centroid can accurately identify the signal energy center in frequency domain, the proposed algorithm can...
Interactive genetic algorithm (IGA) was analyzed from the viewpoint of system, which help to understand IGA better. As a system, IGA is composed of user-subsystem, evolutionary-subsystem, and two information transfer interfaces. User-subsystem has the feature of fluctuation of preference and evolutionary-subsystem has the feature of fitness noise. These two features make some negative influence in...
We propose to watermark images based on wavelet filter banks by encoding the watermark bits into the choice of the filters, in contrast to the conventional watermarking schemes. Such filters are selected from different classes in such a way that they lead to sufficiently distinguishing subbands upon different sequence of filters. A partial sorting on a chosen subband to mark the watermark existence...
Noise is one of the important factors that influence the performance of evolutionary computation (EC). Many studies on noise were reported in traditional EC, but less in IEC. The reported work on noise in EC is reviewed firstly. Then the convergence robustness against fitness noise in IEC is studied secondly. Mapping among spaces, dominating relationship and convergence in IEC are discussed, which...
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