Zhu He

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Large area tiled displays are gaining popularity for use in collabo-rative immersive virtual environments and scientific visualization. While recent work has addressed the issues of geometric registration , rendering architectures, and human interfaces, there has been relatively little work on photometric calibration in general, and photometric(More)
—The World Wide Web provides great convenience for users to obtain information. However, there exists much harmful information on the internet, such as pornographic content and prohibited drugs' information. Thus, how to filter harmful web pages on the internet is quite an important issue. In general, the problem of harmful web page filtering is converted(More)
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