检索结果-内蒙古大学图书馆

Congress on Evolutionary Computation

作者： Shangfei Wang Hua Zhu Key Laboratory of Computing and Communicating Software of Anhui Province School of Computer Science and Technology University of Science and Technology China

This paper proposes a new approach to estimate the emotional perceptual similarity of music using interactive genetic algorithm. Different combinations of measure function and feature weights construct the searching space, and users' subjective similarity evaluations of musical pieces are used as the fitness. The approach tries to search for the optimal combination of measure function and feature weights to better reflect human's perception. A comparative emotion detection experiment is designed to explore the effectiveness of our approach in our MIDI database. The one is the simple K-Nearest Neighbor (KNN) and the other is the modified KNN using the optimal combination obtained. Experimental results show that our method outperforms the simple KNN classifier, which confirms its usefulness of better reflecting human's perception.

关键词： Weight measurement Biological cells Humans Phase measurement Training Encoding

来源：评论

学校读者我要写书评

暂无评论

Spontaneous Facial Expression Recognition Based on Feature Point Tracking

Spontaneous Facial Expression Recognition Based on Feature P...

引用

International Conference on Image and Graphics (ICIG)

作者： Shan He Shangfei Wang Yanpeng Lv Key Laboratory of Computing and Communicating Software of Anhui Province School of Computer Science and Technology University of Science and Technology Hefei Anhui China

In recent years, facial expression recognition has attracted a lot of attention because of its importance in human-computer interaction. However, most previous work has focus on posed expression. In this paper, we propose a spontaneous facial expression recognition method based on feature point tracking. First, all expression sequences are normalized according to their pupils' coordinates. Second, 23 points are labeled manually in the onset and apex frames. Then Kalman filter is used for tracking. Two kinds of features, point displacement features and points distance variation features, are extracted. Finally, Hidden Markov Model is employed as classifier. Experiments have been conducted on the spontaneous facial expression database of USTC-NVIE. The results indicate that Kalman filter point tracking method could detect the right place of points, and the points distance variation features are more suitable than the point displacement features for the facial expression recognition.

关键词： Feature extraction Kalman filters Hidden Markov models Tracking Head Accuracy Face recognition

来源：评论

学校读者我要写书评

暂无评论

A spontaneous facial expression recognition method using head motion and AAM features

A spontaneous facial expression recognition method using hea...

引用

World Congress on Nature & Biologically Inspired computing (NaBIC)

作者： Yanpeng Lv Shangfei Wang Key Laboratory of Computing and Communicating Software of AnHui Province School of Computer Science and Technology University of Science and Technology HeFei Anhui China

Facial expression recognition by artificial intelligence has become a hotspot and produced promising results in recent years. However, most recent work focuses on posed expressions whose involved muscles and dynamics are different from those of spontaneous ones. So this paper proposed a novel two-layer approach, combining dynamic head motion features with static appearance features, to recognize spontaneous expressions. Different from other methods, our method improved an existing eyes location algorithm and explored new head motion features calculated from locations of pupils to recognize fear firstly, and then used appearance features extracted by the AAM algorithm to recognize the remaining images. Comparative experiments on the natural visible and infrared facial expression database (NVIE) show the effectiveness of our approach.

关键词： Hidden Markov models Active appearance model Mathematical model Accuracy Equations Educational institutions Pain

来源：评论

学校读者我要写书评

暂无评论

Posed and spontaneous expression distinguishment from infrared thermal images

Posed and spontaneous expression distinguishment from infrar...

引用

International Conference on Pattern Recognition

作者： Zhilei Liu Shangfei Wang Key Laboratory of Computing and Communicating Software of AnHui Province School of Computer Science and Technology University of Science and Technology of China HeFei AnHui China

ISBN: (纸本)9781467322164

In this paper, we try to distinguish between the posed and spontaneous facial expressions through infrared thermal images. Firstly, six statistical features are extracted from the temperature difference matrices between the apex and onset facial expression frames in each facial subregion. Secondly, the thermal differences between the posed facial expressions and spontaneous ones are analyzed by a Paired-Samples T-test. Thirdly, Bayesian Networks are adopted to classify posed and spontaneous expressions based on these temperature statistical features. Experimental results on the thermal subdatabase of the USTC-NIVE demonstrate the feasibility and effectiveness of posed and spontaneous expression recognition through facial temperature changes. This study also illustrates that the importance of different facial subregions' temperature variances for differentiating different kinds of posed and spontaneous expressions.

关键词： Face recognition Temperature distribution Feature extraction Databases Forehead Conferences

来源：评论

学校读者我要写书评

暂无评论

Spontaneous facial expression recognition by using feature-level fusion of visible and thermal infrared images

Spontaneous facial expression recognition by using feature-l...

引用

IEEE Workshop on Machine Learning for Signal Processing

作者： Zhaoyu Wang Shangfei Wang Key Laboratory of Computing and Communicating Software of Anhui Province School of Computer Science and Technology University of Science and Technology of China Hefei Anhui China

In this paper, we propose a spontaneous facial expression recognition method by using feature-level fusion of visible and thermal infrared facial images. Firstly, the appearance features of visible images and statistic parameters of thermal infrared difference images are extracted. Then, analysis of variance is adopted to select the optimal feature subsets from both visible and thermal ones. These selected features are combined as the input of a K-Nearest Neighbors classifier. We experimentally evaluate the effectiveness of the proposed method on USTC-NVIE database. The experimental results show that fusion of visible and thermal infrared features can improve the accuracy rate of negative expressions and reduce the discrepancy. Thus, it can improve the expression recognition performance.

关键词： Feature extraction Active appearance model Accuracy Face recognition Vectors Image recognition Shape

来源：评论

学校读者我要写书评

暂无评论

Facial Action Unit Recognition Enhanced by Text Descriptions of FACS

引用

IEEE Transactions on Affective computing 2024年

作者： Chang, Yanan Zhang, Caichao Wu, Yi Wang, Shangfei University of Science and Technology of China Key Lab of Computing and Communication Software of Anhui Province Anhui Hefei230027 China

Although the descriptions of facial action units (AUs) provide crucial semantic knowledge for representation learning from facial images, they have not been fully explored for facial action unit recognition. In this paper, we propose a method that effectively explores the knowledge existing in AU descriptions to enhance AU recognition. Specifically, the proposed method consists of three components, i.e. AU recognition network, global representation alignment, and AU representation alignment. The AU recognition network extracts global features and AU-specific features for AU prediction from images. To leverage AU textual descriptions fully, we design two-level representation alignment for AU recognition. The global representation alignment component closes the distance between the global facial features and its corresponding positive global embedding extracted from textual descriptions. Then, the AU-specific features are aligned with the positive AU textual embedding by the AU representation alignment component. Negative textual embedding generation strategies are also designed to further boost the two-level representation alignment. Through the two-level alignment, AU textual descriptions guide image representation learning of the AU recognition network. Experiments on two benchmark datasets and one in-the-wild dataset demonstrate the efficacy of the description-enhanced AU recognition method, compared with the state-of-the-art works. © 2010-2012 IEEE.

关键词： Contrastive Learning

来源：评论

学校读者我要写书评

暂无评论

Study on Parallel computing

引用

Journal of Computer Science & Technology 2006年第5期21卷 665-673页

作者：陈国良孙广中张云泉莫则尧 Anhui Province-MOST Key Co-Lab of High Performance Computing and Its Applications Department of Computer Science and Technology University of Science and Technology of China Hefei 230027 P.R. China Laboratory of Parallel Computing Institute of Software Chinese Academy of Sciences Beijing 100080 P.R. China Laboratory of Computational Physics Institute of Applied Physics and Computational Mathematics Beijing 100088 P.R. China

In this paper, we present a general survey on parallel computing. The main contents include parallel computer system which is the hardware platform of parallel computing, parallel algorithm which is the theoretical base of parallel computing, parallel programming which is the software support of parallel computing. After that, we also introduce some parallel applications and enabling technologies. We argue that parallel computing research should form an integrated methodology of ＂architecture algorithm programming application＂. Only in this way, parallel computing research becomes continuous development and more realistic.

关键词： parallel computing parallel architecture parallel programming parallel algorithm parallel application

来源：评论

学校读者我要写书评

暂无评论

Constructing the Voronoi diagram of planar point set in parallel

Constructing the Voronoi diagram of planar point set in para...

引用

2009 International Conference on Computational Intelligence and software Engineering, CiSE 2009

作者： Dong, Lanfang Wu, Yuan Zhou, Shanhai Anhui Province Key Lab. of Software in Computing and Communication College of Computer Science and Technology USTC Hefei China College of Computer Science and Technology University of Science and Technology of China Hefei China

ISBN: (纸本)9781424445073

By researching Voronoi diagram, parallel algorithm, and divide-and-conquer method, we present a special data structure(change doubly-connected list little) for Voronoi diagram generation in parallel. In this paper we also present two proposal, they are one processor gradually to merge and 22-merger on the parallel machine, the experiment results show that the present algorithm runs faster than the serial program. By analyzing the various results, we should choose the most suitable number of processors according to the point set scale. At last, we can conclude that gradually merger with one processor is better proposal for Voronoi diagram parallel generation. ©2009 IEEE.

关键词： Parallel algorithms

来源：评论

学校读者我要写书评

暂无评论

Test Case Generation Based on Program Invariant and Adaptive Random Algorithm

Test Case Generation Based on Program Invariant and Adaptive...

引用

Advances in Information Technology and Education

作者： Yuan Yuan Zeng Fanping Zhu Guanmiao Deng Chaoqiang Xiong Neng Department of Computer University of Science and Technology of China Anhui Province Key Lab of Software in Computing and Communication

Testing is a critical activity to find software errors. And choosing an effective test suite is the key problem in software testing area. Program invariant, as an attribute of program, can record the implementation state of test case very well and reveal the coverage of program data. In this paper, we integrate adaptive random testing and invariant technology, and present a new method which makes full use of the feedback information of program invariant and invalid case suite to generate the next case. Experiment results show that, compared with other similar methods, running for the same time, our method can achieve higher coverage and faster convergence speed.

关键词： Random testing Program invariant Adaptive random algorithm Test case generation

来源：评论

学校读者我要写书评

暂无评论

A new boundary treatment method for SPH and application in fluid simulation

A new boundary treatment method for SPH and application in f...

引用

Third International Conference on Information and computing(第三届信息与计算科学国际会议 ICIC 2010)

作者： Bo Song Lanfang Dong School of computer science and technology USTC HefeiChina Anhui Province Key Lab of Software in Computing and Communication

ISBN: (纸本)9781424470815;9780769540474

Appropriate dealing with boundary conditions is very important for SPH. Current boundary treatment methods like boundary force method, ghost particle method and virtual boundary layer method, when dealing with complex boundaries, they will have to compute much on putting external particles. For resolving this problem, we propose a new method assuming part of boundary surface instead of external particles, called effective force surface, directly repels the internal particles which approach sufficiently close. We call this new method EFS method. It is implemented in the SPH model for simulating fluid in rabbit-type cup and dam-breaking. In the former case, liquid flows vividly and no internal particles penetrate boundaries. In the latter case, the result is similar to existing result. The experimental results show that EFS method can effectively and precisely deal with complex boundary conditions.

关键词： SPH boundary treatment EFS method

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：