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Coherent and importance sampled LVC BDPT on the GPU GPU上的相干和重要采样LVC BDPT
SIGGRAPH Asia 2015 Technical Briefs Pub Date : 2015-11-02 DOI: 10.1145/2820903.2820913
S. Ravichandran, P J Narayanan
{"title":"Coherent and importance sampled LVC BDPT on the GPU","authors":"S. Ravichandran, P J Narayanan","doi":"10.1145/2820903.2820913","DOIUrl":"https://doi.org/10.1145/2820903.2820913","url":null,"abstract":"Bidirectional path tracing (BDPT) can render highly realistic scenes with complicated lighting scenarios. The Light Vertex Cache (LVC) based BDPT method by Davidovic et al. [Davidovič et al. 2014] provided good performance on scenes with simple materials in a progressive rendering scenario. In this paper, we propose a new bidirectional path tracing formulation based on the LVC approach that handles scenes with complex, layered materials efficiently on the GPU. We achieve coherent material evaluation while conserving GPU memory requirements using sorting. We propose a modified method for selecting light vertices using the contribution importance which improves the image quality for a given amount of work. Progressive rendering can empower artists in the production pipeline to iterate and preview their work quickly. We hope the work presented here will enable the use of GPUs in the production pipeline with complex materials and complicated lighting scenarios.","PeriodicalId":21720,"journal":{"name":"SIGGRAPH Asia 2015 Technical Briefs","volume":"179 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76992113","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}
引用次数: 1
Visuohaptic bone saw simulator: combining vibrotactile and kinesthetic feedback 视触觉骨锯模拟器:结合振动触觉和动觉反馈
SIGGRAPH Asia 2015 Technical Briefs Pub Date : 2015-11-02 DOI: 10.1145/2820903.2820925
P. Olsson, F. Nysjö, Neeru Singh, A. Thor, I. Carlbom
{"title":"Visuohaptic bone saw simulator: combining vibrotactile and kinesthetic feedback","authors":"P. Olsson, F. Nysjö, Neeru Singh, A. Thor, I. Carlbom","doi":"10.1145/2820903.2820925","DOIUrl":"https://doi.org/10.1145/2820903.2820925","url":null,"abstract":"The combination of stereo visualization and haptics provides a natural interface for surgical training simulators, an application which is inherently both highly visual and highly tactile. However, most off-the-shelf kinesthetic haptic devices, such as the popular Phantom devices, are not well-suited to display high-fidelity vibrotactile feedback for the high frequency force components in surgical tools such as a reciprocating bone saw. In these haptic devices, forces are mediated from the actuators to the user through a mechanical linkage, in which inertia, friction, and backlash may distort the feedback. In addition, sustained display of vibrations may cause undue wear of the device. We propose a hybrid solution combining kinesthetic feedback from an off-the-shelf haptic device with high-fidelity vibration feedback from a vibrotactile actuator, and show that the hybrid is able to reproduce vibrations of an actual surgical reciprocating saw within the full perceptible frequency range.","PeriodicalId":21720,"journal":{"name":"SIGGRAPH Asia 2015 Technical Briefs","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91014333","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}
引用次数: 4
Meltables: fabrication of complex 3D curves by melting 熔融:通过熔化制造复杂的3D曲线
SIGGRAPH Asia 2015 Technical Briefs Pub Date : 2015-11-02 DOI: 10.1145/2820903.2820915
Andrew O. Sageman-Furnas, Nobuyuki Umetani, Ryan M. Schmidt
{"title":"Meltables: fabrication of complex 3D curves by melting","authors":"Andrew O. Sageman-Furnas, Nobuyuki Umetani, Ryan M. Schmidt","doi":"10.1145/2820903.2820915","DOIUrl":"https://doi.org/10.1145/2820903.2820915","url":null,"abstract":"We propose a novel approach to fabricating complex 3D shapes via physical deformation of simpler shapes. Our focus is on objects composed of a set of planar beams and joints, where the joints are thin parts of the object which temporarily become living hinges when heated, close to a fixed angle defined by the local shape, and then become rigid when cooled. We call this class of objects Meltables. We present a novel algorithm that computes an optimal joint sequence which approximates a 3D spline curve while satisfying fabrication constraints. This technique is used in an interactive Meltables design tool. We demonstrate a variety of Meltables, fabricated with both 3D-printing and standard PVC piping.","PeriodicalId":21720,"journal":{"name":"SIGGRAPH Asia 2015 Technical Briefs","volume":"118 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91519094","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}
引用次数: 13
Region-based painting style transfer 基于地域的绘画风格转移
SIGGRAPH Asia 2015 Technical Briefs Pub Date : 2015-11-02 DOI: 10.1145/2820903.2820917
Shugo Yamaguchi, Takuya Kato, Tsukasa Fukusato, Chie Furusawa, S. Morishima
{"title":"Region-based painting style transfer","authors":"Shugo Yamaguchi, Takuya Kato, Tsukasa Fukusato, Chie Furusawa, S. Morishima","doi":"10.1145/2820903.2820917","DOIUrl":"https://doi.org/10.1145/2820903.2820917","url":null,"abstract":"In this paper, we present a novel method for creating a painted image from a photograph using an existing painting as a style source. The core idea is to identify the corresponding objects in the two images in order to select patches more appropriately. We automatically make a region correspondence between the painted source image and the target photograph by computing color and texture feature distances. Next, we conduct a patch-based synthesis that preserves the appropriate source and target features. Unlike previous example-based approaches of painting style transfer, our results successfully reflect the features of the source images even if the input images have various colors and textures. Our method allows us to automatically render a new painted image preserving the features of the source image.","PeriodicalId":21720,"journal":{"name":"SIGGRAPH Asia 2015 Technical Briefs","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89273307","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}
引用次数: 2
Depth-aware coherent line drawings 深度感知连贯线条图
SIGGRAPH Asia 2015 Technical Briefs Pub Date : 2015-11-02 DOI: 10.1145/2820903.2820909
Marc Spicker, J. Kratt, Diana Arellano, O. Deussen
{"title":"Depth-aware coherent line drawings","authors":"Marc Spicker, J. Kratt, Diana Arellano, O. Deussen","doi":"10.1145/2820903.2820909","DOIUrl":"https://doi.org/10.1145/2820903.2820909","url":null,"abstract":"In this paper we utilize depth information to extend a line drawing algorithm, improving depth perception and object differentiation in large and spatially complex scenes. We consider different scales of features and apply a flow-based morphological filter to the scenes. Based on this two line drawing styles are defined. The proposed algorithm works in real-time and enables users to manipulate the parameter space through instant visual feedback. We evaluated the effectiveness of our method by performing a user study.","PeriodicalId":21720,"journal":{"name":"SIGGRAPH Asia 2015 Technical Briefs","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72994035","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}
引用次数: 12
Pseudo-marginal metropolis light transport 伪边际大都市轻运输
SIGGRAPH Asia 2015 Technical Briefs Pub Date : 2015-11-02 DOI: 10.1145/2820903.2820922
J. Kronander, Thomas Bo Schön, J. Unger
{"title":"Pseudo-marginal metropolis light transport","authors":"J. Kronander, Thomas Bo Schön, J. Unger","doi":"10.1145/2820903.2820922","DOIUrl":"https://doi.org/10.1145/2820903.2820922","url":null,"abstract":"Accurate and efficient simulation of light transport in heterogeneous participating media, such as smoke, clouds and fire, plays a key role in the synthesis of visually interesting renderings for e.g. visual effects, computer games and product visualization. Similar problems also has important applications in other fields such as neutron transport and medical radiation dosimetry. While significant progress has been made towards robust and efficient algorithms for rendering heterogeneous participating media, scenes containing highly anisotropic phase functions, glossy surfaces and complex visibility still remain challenging.","PeriodicalId":21720,"journal":{"name":"SIGGRAPH Asia 2015 Technical Briefs","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77579340","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}
引用次数: 4
Exemplar-based video completion with geometry-guided space-time patch blending 基于范例的视频补全与几何制导的时空补丁混合
SIGGRAPH Asia 2015 Technical Briefs Pub Date : 2015-11-02 DOI: 10.1145/2820903.2820921
M. Daisy, P. Buyssens, D. Tschumperlé, O. Lézoray
{"title":"Exemplar-based video completion with geometry-guided space-time patch blending","authors":"M. Daisy, P. Buyssens, D. Tschumperlé, O. Lézoray","doi":"10.1145/2820903.2820921","DOIUrl":"https://doi.org/10.1145/2820903.2820921","url":null,"abstract":"We propose an exemplar-based video completion algorithm together with a geometry-guided space-time artifact reduction technique. The proposed completion algorithm is the video extension of an inpainting algorithm proven to be effective on still images. Then, the proposed space-time artifact reduction technique blends multiple patches, guided by a tensor model in order to preserve local structures and textures as much as possible. The two contributions we propose are complementary, and provide video completion results of good quality without block-effect artifacts.","PeriodicalId":21720,"journal":{"name":"SIGGRAPH Asia 2015 Technical Briefs","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77459932","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}
引用次数: 4
Shape-aware MLS deformation for line handles 线条手柄的形状感知MLS变形
SIGGRAPH Asia 2015 Technical Briefs Pub Date : 2015-11-02 DOI: 10.1145/2820903.2820908
Ojaswa Sharma, Ranjith Tharayil
{"title":"Shape-aware MLS deformation for line handles","authors":"Ojaswa Sharma, Ranjith Tharayil","doi":"10.1145/2820903.2820908","DOIUrl":"https://doi.org/10.1145/2820903.2820908","url":null,"abstract":"In this work, we propose a shape-aware extension to the Moving Least Squares (MLS) image deformation algorithm proposed by Schaefer et al. The original algorithm is not applicable to concave shapes since the weights are based on the Euclidean distance. A number of recent MLS-based deformation algorithms have proposed shape-aware extensions, but only for point handles. In contrast, we suggest a closed-form mathematical solution that applies naturally to point handles as well as line handles. In particular, our solution is based on the interior distance metric to the MLS weights for line handles so that they are shape aware and produce plausible deformations.","PeriodicalId":21720,"journal":{"name":"SIGGRAPH Asia 2015 Technical Briefs","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86924027","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}
引用次数: 0
Sketch based modeling via manifold regularization 基于草图的流形正则化建模
SIGGRAPH Asia 2015 Technical Briefs Pub Date : 2015-11-02 DOI: 10.1145/2820903.2820906
Juncheng Liu, Z. Lian, J. Feng, Bingfeng Zhou
{"title":"Sketch based modeling via manifold regularization","authors":"Juncheng Liu, Z. Lian, J. Feng, Bingfeng Zhou","doi":"10.1145/2820903.2820906","DOIUrl":"https://doi.org/10.1145/2820903.2820906","url":null,"abstract":"This paper proposes a novel method to automatically generate the realistic 3D model for a 2D free-hand sketch drawn by a user. Specifically, the proposed method first retrieves 3D shapes based on the sketch, and then implements a deformation procedure to make the most similar model retrieved more consistent with the provided sketch. In the retrieval stage, a locality preserving view selection scheme is adopted to generate views that are well-suited to create sketch images for the 3D object. Our method predicates the sketch views accurately while significantly reduces the amount of rendering views. In the deformation stage, retrieved models are modified according to the input sketches. Since free-hand sketches always contain various kinds of drawing errors such as stroke jittering and asymmetry, extracting plausible deforming information from sketches while discarding undesirable drawing errors is difficult. To address these issues, we obtain the plausible deformation for the corresponding sketch by exploring a shape manifold trained on a collection of similar 3D models. Experimental results show that the proposed method can generate 3D shapes that correspond quite well with 2D sketches.","PeriodicalId":21720,"journal":{"name":"SIGGRAPH Asia 2015 Technical Briefs","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90167948","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}
引用次数: 1
Randomized redundant DCT: efficient denoising by using random subsampling of DCT patches 随机冗余DCT:利用DCT patch的随机子采样进行高效去噪
SIGGRAPH Asia 2015 Technical Briefs Pub Date : 2015-11-02 DOI: 10.1145/2820903.2820923
Shu Fujita, Norishige Fukushima, M. Kimura, Y. Ishibashi
{"title":"Randomized redundant DCT: efficient denoising by using random subsampling of DCT patches","authors":"Shu Fujita, Norishige Fukushima, M. Kimura, Y. Ishibashi","doi":"10.1145/2820903.2820923","DOIUrl":"https://doi.org/10.1145/2820903.2820923","url":null,"abstract":"j In this paper, we propose an acceleration method for image denoising with a redundant discrete cosine transform (R-DCT). Image denoising is essential for image processing, and its efficiency is important for graphics applications. R-DCT with a hard-thresholding or shrinkage method can perform denoising while keeping detail textures. Moreover, the method is computationally efficient compared with state-of-the-art denoising methods, such as BM3D. The computational cost, however, is still insufficient for real-time processing; hence, we accelerate the method by using randomized subsampling of DCT patches. Experimental results show that our method can accelerate the processing while the degradation of denoising performance is a little.","PeriodicalId":21720,"journal":{"name":"SIGGRAPH Asia 2015 Technical Briefs","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80259334","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}
引用次数: 20
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