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A method of shadow puppet figure modeling and animation

Frontiers of Information Technology & Electronic Engineering 2015年第5期16卷 367-379页

作者： Xiao-fang HUANG Shou-qian SUN Ke-jun ZHANG Tian-ning XU Jian-feng WU Bin ZHU College of Computer Science and Technology Zhejiang University School of Art Zhejiang University of Technology College of Information Science and Technology Zhejiang Shuren University

To promote the development of the intangible cultural heritage of the world, shadow play, many studies have focused on shadow puppet modeling and interaction. Most of the shadow puppet figures are still imaginary,spread by ancients, or carved and painted by shadow puppet artists, without consideration of real dimensions or the appearance of human bodies. This study proposes an algorithm to transform 3d human models to 2d puppet figures for shadow puppets, including automatic location of feature points, automatic segmentation of 3d models, automatic extraction of 2d contours, automatic clothes matching, and animation. Experiment proves that more realistic and attractive figures and animations of the shadow puppet can be generated in real time with this algorithm.

关键词： Shadow play Shadow puppet figure 3d human body data processing 2d modeling

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Imaging Rock density distribution beneath Liwa Fracture Zone in the Southern Part of the Great Sumatran Fault System, Indonesia

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International Journal of Geosciences 2016年第4期7卷 598-614页

作者： djedi S. Widarto Tedi Yudistira Jun-Ichi Nishida Ikuo Katsura Eddy Z. Gaffar Susumu Nishimura Upstream Technology Center PT Pertamina (Persero) Jakarta Indonesia department of Geophysical Engineering Bandung Institute of Technology Bandung Indonesia Faculty of Literary Ohtani University Kyoto Japan Kyoto Institute of Natural History Kyoto Japan Research Centre for Geotechnology—LIPI Bandung Indonesia

We have imaged rock density distribution beneath Liwa fracture zone in the southern part of the the Sumatran Fault Zone by modelling and inverting Bouguer gravity data in two-and three-dimensional environments, respectively. The purpose of this study is aimed to figure out the subsurface distribution of rock densities associated with subsurface basement structure representing the evidence of trans-tensional tectonic product in the SF. In the gravity modeling, to eliminate distortions to the measured gravity values before modelling and inverting the data, Bouguer anomalies obtained in field measurements are reduced to the horizontal plane of z = +800 m as a representation of the average elevation in Liwa. For the inversion, we used algorithm implementing depth-and minimum volume weighting parameters in order to obtain a smooth model with better vertical resolution. The two-dimensional models show clearly surface topography of the basement rocks and the presence of normal faults. The reduced Bouguer anomaly of +800 m elevation shows the presence of structural lineaments extending primarily in a northwest-southeast direction, parallel to Sumatran Fault Zone and older graben faults showing a negative flower structure. From the three-dimensional inversion, the model illustrates an increase of density contrast, lower values being found near the surface and higher values in the deeper parts. The lower density contrast of 0.15 to 0.3 g/cm3 found in the rock groups at depths of 2 km and less is characteristic of relatively homogeneous and poorly compacted rocks. Rocks with moderate to high density contrast (>1.0 g/cm3) are recognized at depths of over 2 km. This model suggests a change of basement morphology as a function of depth, and delineates structural lineaments extending in northwest-southeast direction. This study supports the previous thought that Liwa area is underlain by graben structures, formed by trans-tensional tectonic events. Higher-den

关键词： Gravity Imaging Rock density Fracture Zone 2d modeling 3d Inversion density Contrast

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