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Recent applications of model-based iterative reconstruction (MBIR) algorithms to multislice helical CT reconstructions have shown that MBIR can greatly improve image quality by increasing resolution as well as reducing noise and some artifacts. However, high computational cost and long reconstruction times remain as a barrier to the use of MBIR in practical applications. Among the various iterative...
With the advent of digital technology, digital image has gradually taken the place of the original analog photograph, and the forgery of digital image has become more and more easy and indiscoverable. Image splicing is a commonly used technique in image tampering. To implement image splicing detection a blind, passive and effective splicing detection scheme was proposed in this paper. Image splicing...
Based on the max-min ant system solving the Pseudo-Boolean Optimization problem, we improved the process of solving the problem. An memory array is introduced to record changes of each bit string, memory array to be used for optimization of the solution of the current iteration. Such improvements will help improve the convergence rate of Max-Min ant colony algorithm. The improved algorithm was applied...
In this paper, an ultra-high-speed, differential current-steering mode 10-bit D/A converter is presented. The converter consists of 8-channel time division multiplexer, 5-31 ??thermometer?? decoder, fast current conversion switch, constant current source array, and other units, is processed in 0.35 ??m SiGe BiCMOS standard process technology, and has a data fresh rate of up to 1 GSPS. First, the circuit...
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