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This paper presents a blind digital watermarking algorithm based on spatial images. We study the theory and characteristic of singular value, scrambling the serial digital watermark images again which mapped out through the chaotic sequence. We divided the original carrier image into blocks, and deal with each small block with the singular value decomposition in order to extract various small singular...
This paper takes a 600MW supercritical steam turbine with a combined rotor for high and intermediate pressure parts (HIP) as an object to analyze the unbalance vibration of the HIP rotor. First, a model for the HIP rotor is established with lumped parameter method and the critical speeds and vibration modes of the rotor are calculated based on the transfer matrix method. The results calculated with...
A project for extracting suspicious packages from surveillance video programs is proposed in this paper. Three methods: improved RGB deduction, improved Hidden Markov Model and template matching, were used in this detecting and recognizing process. A simulate environment where a man with a parcel walking at the entrance of subway was set up for testing. A prototype system for unattended-package detection...
The statement of universal design transcends original idea of product design, and it is a design concept which is full of love and consideration. Along with continuous improvement of the socio-economic level, Home bathroom products, as main components of four functional and characteristic regions in home residential environment, are closely related with our daily life and play a significant role....
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