This describes the development of an interactive audio/visual art system and discusses both the context of the work, in abstraction and noise, and the employment of audience testing as an integral part of the process....
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Heightfields are two-dimensional arrays of height values, commonly used to store terrain or water surface data, and are also commonly used for calculating bump maps. It is necessary to calculate normal vectors for hei...
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In this paper, we introduce second order and mixed order partial differential equations (PDEs) for surface blending and present an approximate algorithm for the resolution of the PDEs. We investigate how different ord...
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In the paper, we bring forward an image encryption algorithm during the process of JPEG compression. According to the chaotic theory of dynamic systems and modern cryptography, we solved the following technique, First...
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ISBN:
(纸本)0769526063
In the paper, we bring forward an image encryption algorithm during the process of JPEG compression. According to the chaotic theory of dynamic systems and modern cryptography, we solved the following technique, First, how to generate chaotic sequence having good randomness according to the characteristic that Logistic chaotic systems are extremely sensitive to the initial condition? Secondly, how to create a series of one-way hash being as block key from the chaotic sequences? Thirdly, during the process of JPEG compression coding, how to implement the image compression and encryption by using the block cipher? In the analysis of the algorithm, we discuss the randomness of the chaotic sequence in detail. We also analyze the security and anti-collision of the chaotic hash sequence by several variant methods. The results indicate that our algorithm completely satisfied the security requirement in the sense of cryptography.
We present a novel approach to the problem of hairstyle construction from raw surface data such as the ones obtained from surface scans. Our approach is based on a shape matching algorithm that fits individual hair fi...
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Displaying a natural phenomenon is effective for improving the reality of computergraphics. A display of snow especially plays an important role in expressing a sense of the season. However, since geometric modeling ...
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A general purpose, easy-to-use graphical visualisation tool has been developed to facilitate the display of experiment data. It supports simultaneous or selective rendering of surfaces, graphs and animated traces in a...
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ISBN:
(纸本)0769526063
A general purpose, easy-to-use graphical visualisation tool has been developed to facilitate the display of experiment data. It supports simultaneous or selective rendering of surfaces, graphs and animated traces in a virtual 3D environment. It can accept as many as 100,000 objects for animated replay, and allows for interactive control of viewing position, lighting and other display parameters. The viewer is thus well suited to scoping experiment results, visually debugging data processing algorithms, and presenting complex data. Its principal application is in the visualisation of surfaces and graphs in the entropy analysis of medical and industrial related time-series.
During progressive transmission of 3D geometry models, the transmission order of details at different region has great effects on the quality of reconstructed models at low bit-rate. This work presents a rate-distorti...
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According to Aristo's mimesis theory, art is imitation of nature (real). An art product, says Aristo, is most valuable when it imitates the complete nature well. Even though the opinion of the condition that art m...
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In this paper, a normalized totally positive (NTP) basis given by Delgado and Pefla [5] is used to form non-rational and rational DP-Ball curves. The relationships between rational Bézier and rational DP-Ball cur...
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