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The MCHF atomic structure package consists of a series of programs that predict a range of atomic properties and communicate information through les. Several of these have now been modiied for the distributed-memory environment. On the Intel iPSC/860, the restricted amount of memory and the lack of virtual memory required a redesign of the data organization(More)
Engineering 3D microstructures with predetermined properties is critical for stem cell niche studies. We have developed a multiphoton femtosecond laser-based 3D printing platform, which generates complex protein microstructures in minutes. Here, we used the platform to test a series of fabrication and reagent parameters in precisely controlling the(More)
Firstly, the nonnegative matrix factorization with sparseness constraints on parts of the basis matrix (NMFSCPBM) method is proposed in this paper. Secondly, the encrypted watermark is embedded into the big coefficients of the basis matrix that the host video is decomposed into by NMFSCPBM. At the same time, the watermark embedding strength is adaptively(More)
Action recognition has very high academic research value, potential commercial value and wide market application prospect in computer vision. In order to improve the action recognition accuracy, two kinds of dynamic descriptors based on dense trajectories are proposed in this paper. Firstly, to capture the local position information that action occurs,(More)
With the emergence and maturity of various signal processing tools, it can be more convenient, much faster and more arbitrary for people to illegally tamper the original video to varying degrees and in different forms, which makes the video authentication become the focus of researchers in multimedia field. This paper aims to improve the tampered area’s(More)
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