{"title":"Automatic architecture model generation based on object hierarchy","authors":"X. Ning, Xiaopeng Zhang, Yinghui Wang","doi":"10.1145/1899950.1899989","DOIUrl":"https://doi.org/10.1145/1899950.1899989","url":null,"abstract":"Terrestrial laser scanner (TLS) can be used to acquire 3D facade information of modern architectures, represented as point cloud data (PCD). Basic shape elements of an architecture, like windows and doors, should be recovered in reconstruction; and the model should be represented corresponding to the information of architectural design, such as lines and polygons. Most recent approaches could not reconstruct models automatically with designed shape details. Either user's interactions are needed [Zheng et al. 2010; Nan et al. 2010]; or the reconstructed model is coarse without information of shape details. Therefore, it is necessary to develop new algorithms to generate geometric models automatically, fitting well the design information of architectural PCD. A novel framework is proposed to generate explicitly an architectural model from scanned points of an existing architecture. An automatic, hierarchical and fast facade reconstruction framework is presented based on a novel combination of facade structures, detailed windows propagation, hierarchical model consolidation and contextual semantic representations. As a result, a high-quality geometric model of an architecture ia generated. Figure 1 shows the procedure of this work, from building detection, to planar region decomposition, to boundary point extraction, and to the consolidated hierarchal model.","PeriodicalId":354911,"journal":{"name":"ACM SIGGRAPH ASIA 2010 Sketches","volume":"04 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127169470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Electrostatic dynamics interaction for cloth","authors":"D. Cao, Rick Parent","doi":"10.1145/1899950.1899974","DOIUrl":"https://doi.org/10.1145/1899950.1899974","url":null,"abstract":"An important application of cloth is for making garments. In particular, visualizing a garment without actually making it drastically simplifies the prototyping phase [Volino and Magnenat-Thalmann 2000]. With the development of e-commerce, online clothes shopping has been more and more popular. So it is demanding to realistically exhibit garment behavior on the human body in an interactive environment.","PeriodicalId":354911,"journal":{"name":"ACM SIGGRAPH ASIA 2010 Sketches","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131567537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Point-based hair global illumination","authors":"Ramón Montoya-Vozmediano","doi":"10.1145/1899950.1899967","DOIUrl":"https://doi.org/10.1145/1899950.1899967","url":null,"abstract":"A point-based representation was extensively used on Tangled to generate occlusion and indirect illumination involving the characters' hair. We describe how this was achieved in reasonable rendering times.","PeriodicalId":354911,"journal":{"name":"ACM SIGGRAPH ASIA 2010 Sketches","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132856905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Interactive voxelized epipolar shadow volumes","authors":"Chris Wyman","doi":"10.1145/1899950.1900003","DOIUrl":"https://doi.org/10.1145/1899950.1900003","url":null,"abstract":"Current algorithms for rendering shadows inside participating media hit a bottleneck when computing light visibility throughout the media. These algorithms rely either on sampling along viewing rays, often thrashing memory caches, or slower analytic solutions using object-space computations, such as shadow volumes. We present a new cache-coherent sampling technique that computes volumetric light visibility that requires as little as one texture lookup per pixel. We efficiently voxelize shadow volumes in epipolar-space using standard parallel scan operations. The only step dependent on geometric complexity is an image-space voxelization [Eisemann and Décoret 2006] that often takes under a millisecond. This allows us to render shadows in participating media at up to 300 frames per second.","PeriodicalId":354911,"journal":{"name":"ACM SIGGRAPH ASIA 2010 Sketches","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122373218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Automated target selection for DrivenShape","authors":"Gene S. Lee","doi":"10.1145/1899950.1899993","DOIUrl":"https://doi.org/10.1145/1899950.1899993","url":null,"abstract":"DrivenShape is a data-driven deformation that uses pre-computed data (a.k.a. targets) to approximate the effects of a computationally expensive cloth simulation [Kim and Vendrovsky 2008]. Rather than computing a true, accurate solution, DrivenShape produces a quick approximation that satisfies an acceptable margin of error, where error is defined as a difference in appearance or shape.","PeriodicalId":354911,"journal":{"name":"ACM SIGGRAPH ASIA 2010 Sketches","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122194303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Parallel progressive photon mapping on GPUs","authors":"T. Hachisuka, H. Jensen","doi":"10.1145/1899950.1900004","DOIUrl":"https://doi.org/10.1145/1899950.1900004","url":null,"abstract":"Accurate global illumination rendering using GPUs is gaining attention because of the highly parallel nature of global illumination algorithms. For example, computing the radiance of each pixel using path tracing is embarrassingly parallel. Some major commercial rendering software also started adopting global illumination on GPUs.","PeriodicalId":354911,"journal":{"name":"ACM SIGGRAPH ASIA 2010 Sketches","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122208286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Real-time stereo visual hull rendering using a multi-GPU-accelerated pipeline","authors":"J. Feng, Yang Liu, Bingfeng Zhou","doi":"10.1145/1899950.1900002","DOIUrl":"https://doi.org/10.1145/1899950.1900002","url":null,"abstract":"Visual hull is an efficient technique for image-based rendering. It takes a group of images as input, produces an approximate geometry model of the object, and renders it from arbitrary new viewpoints. Explicit visual hull models (as polygon meshes or point sets) are usually insufficient in accuracy. Image-based visual hull (IBVH) method [Matusik 2000] reconstructs implicit models, and produce view-dependent rendering results with higher quality.","PeriodicalId":354911,"journal":{"name":"ACM SIGGRAPH ASIA 2010 Sketches","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123980529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Understanding Ohm's law: enlightenment through augmented reality","authors":"J. Peng, W. Müller-Wittig","doi":"10.1145/1899950.1899960","DOIUrl":"https://doi.org/10.1145/1899950.1899960","url":null,"abstract":"This paper proposes a new interactive environment for learning the basics of electricity in series and parallel circuits using augmented reality (AR). The system allows the student to design and study electric circuits by placing symbolic cards representing resistors on a board. Then this board is overlaid by a 3D virtual circuit with its electrical components. Finally, this virtual circuit is coupled back to reality by lighting up a real bulb with intensity depending on the chosen layout. In addition, the mathematical relationship between current, resistance and voltage (Ohm's law) is presented in an information window.","PeriodicalId":354911,"journal":{"name":"ACM SIGGRAPH ASIA 2010 Sketches","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116049405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jae-Ho Nah, Jeong-Soo Park, Jin-woo Kim, Chanmin Park, T. Han
{"title":"Ordered depth-first layouts for ray tracing","authors":"Jae-Ho Nah, Jeong-Soo Park, Jin-woo Kim, Chanmin Park, T. Han","doi":"10.1145/1899950.1900005","DOIUrl":"https://doi.org/10.1145/1899950.1900005","url":null,"abstract":"We present an ordered depth-first tree layout for ray tracing. Among two child nodes, a child node with the larger surface area is stored next to its parent node. Hence, the probabilities that a ray accesses to the same cache line increase. Our approach can be easily and widely used for various ray tracing systems with very small overheads, as it is based on existing depth-first layouts.","PeriodicalId":354911,"journal":{"name":"ACM SIGGRAPH ASIA 2010 Sketches","volume":"481 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123396912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A real time computer model for wind-driven fallen snow","authors":"Tomoaki Moriya, Tokiichiro Takahashi","doi":"10.1145/1899950.1899976","DOIUrl":"https://doi.org/10.1145/1899950.1899976","url":null,"abstract":"We propose a new modeling method for the appearance of fallen snow formed by snow drift near buildings and other obstacles. Instead of computational fluid dynamics simulation for wind-driven fallen snow, we employ the Pre-computed Radiance Transfer (PRT) technique [Sloan et al. 2002] to handle snowflakes which fly, hit and fall with the wind blowing to all directions around obstacles. This approach approximates snow accumulation with snow drift without heavy fluid dynamics simulation computation.","PeriodicalId":354911,"journal":{"name":"ACM SIGGRAPH ASIA 2010 Sketches","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128202271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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