International Conference on Virtual Reality Continuum and its Applications in Industry最新文献

CHASE: character animation scripting environment CHASE:角色动画脚本环境

International Conference on Virtual Reality Continuum and its Applications in Industry Pub Date : 2015-10-30 DOI: 10.1145/2817675.2817677

Christos Mousas, C. Anagnostopoulos

引用次数: 4

Quantitative intensity analysis of facial expressions using HMM and linear regression 基于HMM和线性回归的面部表情定量强度分析

International Conference on Virtual Reality Continuum and its Applications in Industry Pub Date : 2014-11-30 DOI: 10.1145/2670473.2670501

Jing Wu, Shuangjiu Xiao

{"title":"Quantitative intensity analysis of facial expressions using HMM and linear regression","authors":"Jing Wu, Shuangjiu Xiao","doi":"10.1145/2670473.2670501","DOIUrl":"https://doi.org/10.1145/2670473.2670501","url":null,"abstract":"In this paper, an automatic framework of facial expression analysis focusing on quantitative intensity illustration is proposed. Quantitative intensity variation could be extracted during the whole period of facial expressions, from neutral state to apex state. The logic behind this paper lies in the intensity differences of same prototype expression, and lies that these intensity differences could be illustrated by facial expression energy variation throughout expression. In order to unify video data with different frame numbers, Hidden Markov Models (HMMs) are applied to every video for classification and expression states generation. These expressions states extracted from each video showing same expression have the same length. Then given facial landmarks of key positions, energy value of each state could be demonstrated by placements of landmarks. By synthesizing states variation and energy value, intensity curves for each expression could be obtained using linear regression algorithm. In this work, we explore person-dependent and person-independent analysis of expressions, in person-dependent experiment quantitative intensity compare is tested for expression 'Happiness'.","PeriodicalId":240292,"journal":{"name":"International Conference on Virtual Reality Continuum and its Applications in Industry","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129522940","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

Visual saliency based bag of phrases for image retrival 基于视觉显著性的短语包图像检索

International Conference on Virtual Reality Continuum and its Applications in Industry Pub Date : 2014-11-30 DOI: 10.1145/2670473.2670510

Lijuan Duan, Wei Ma, Jun Miao, Xuan Zhang

引用次数: 2

A local evaluation approach for multi-agent navigation in dynamic scenarios 动态场景下多智能体导航的局部评估方法

International Conference on Virtual Reality Continuum and its Applications in Industry Pub Date : 2014-11-30 DOI: 10.1145/2670473.2670493

Hao Jiang, Tianlu Mao, Shuangyuan Wu, Mingliang Xu, Zhaoqi Wang

引用次数: 4

A two-view VR shooting theater system 一种双视角VR拍摄影院系统

International Conference on Virtual Reality Continuum and its Applications in Industry Pub Date : 2014-11-30 DOI: 10.1145/2670473.2670497

Hong-Da Yu, Huiyu Li, Wei-Si Sun, Wei Gai, Tingting Cui, Chu-Tian Wang, Dong-Dong Guan, Yi-Jun Yang, Chenglei Yang, W. Zeng

引用次数: 6

A practical GPU accelerated surface reconstruction 一个实用的GPU加速曲面重建

International Conference on Virtual Reality Continuum and its Applications in Industry Pub Date : 2014-11-30 DOI: 10.1145/2670473.2670506

Shuangcai Yang, Xubo Yang

引用次数: 1

Fast parallel construction of stack-less complete LBVH trees with efficient bit-trail traversal for ray tracing 基于高效位迹遍历的无堆栈完全LBVH树的快速并行构造

International Conference on Virtual Reality Continuum and its Applications in Industry Pub Date : 2014-11-30 DOI: 10.1145/2670473.2670488

Arturo García, Sergio Murguia, Ulises Olivares, Félix F. Ramos

{"title":"Fast parallel construction of stack-less complete LBVH trees with efficient bit-trail traversal for ray tracing","authors":"Arturo García, Sergio Murguia, Ulises Olivares, Félix F. Ramos","doi":"10.1145/2670473.2670488","DOIUrl":"https://doi.org/10.1145/2670473.2670488","url":null,"abstract":"This paper presents an efficient space partitioning approach for building high quality Linear Bounding Volume Hierarchy (LBVH) acceleration structures for ray tracing. This method produces more regular axis-aligned bounding boxes (AABB) into a complete binary tree. This structure is fully parallelized on GPU and the process to efficiently parallelize the construction is reviewed in detail in order to guarantee the fastest build times. We also describe the traversal algorithm that is based on a stack-less bit trail method to accelerate the frame rates of rendering of 3D models in graphics processing units (GPU). We analyze diverse performance metrics such as build times, frame rates, memory footprint and average intersections by AABB and by primitive, and we compare the results with a middle split and SAH (surface area heuristic) splitting method where we show that our structure provides a good balance between fast building times and efficient ray traversal performance. This partitioning approach improves the ray traversal efficiency of rigid objects resulting on an increase of frame rates performance of 30% SAH and 50% faster than middle split.","PeriodicalId":240292,"journal":{"name":"International Conference on Virtual Reality Continuum and its Applications in Industry","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130116645","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: 7

Transparent-supported radiance regression function 透明支持的亮度回归功能

International Conference on Virtual Reality Continuum and its Applications in Industry Pub Date : 2014-11-30 DOI: 10.1145/2670473.2670498

Xue Qin, Shuangjiu Xiao

引用次数: 1

3D fluid scene synthesis and animation 3D流体场景合成和动画

International Conference on Virtual Reality Continuum and its Applications in Industry Pub Date : 2014-11-30 DOI: 10.1145/2670473.2670508

Hongyan Quan, Xiao Song, M. Yu, Yahui Song

引用次数: 2

Graph-cut based interactive image segmentation with texture constraints 基于纹理约束的图形切割交互式图像分割

International Conference on Virtual Reality Continuum and its Applications in Industry Pub Date : 2014-11-30 DOI: 10.1145/2670473.2670474

Yu Zhang, Wei Ma, Luwei Yang, Lijuan Duan, Jianli Liu

{"title":"Graph-cut based interactive image segmentation with texture constraints","authors":"Yu Zhang, Wei Ma, Luwei Yang, Lijuan Duan, Jianli Liu","doi":"10.1145/2670473.2670474","DOIUrl":"https://doi.org/10.1145/2670473.2670474","url":null,"abstract":"In the paper, we present a method of interactive image segmentation with texture constraints in the framework of graph cut. Given an image, we first gather user-marked information to establish the color and texture prior models of the foreground and background. Then, we formulate an energy function composed of color, gradient and texture terms. At last, the foreground is extracted by minimizing the energy function using graph cut. In the energy function, the texture term describes the difference between the texture prior models and the texture descriptors of each pixel to be labeled. The foreground/background texture prior model is represented as histograms of Local Binary Patterns (LBP). Every pixel to be labeled in the image has a foreground and a background texture descriptor, which are obtained by a randomized texton-searching algorithm. The newly added texture term is effective to overcome the difficulty in locating real boundaries when dealing with textured foreground/background. Experimental results demonstrate that, with the same amount of user interaction, our method generates better results than traditional ones.","PeriodicalId":240292,"journal":{"name":"International Conference on Virtual Reality Continuum and its Applications in Industry","volume":"291 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122792189","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