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An adaptive haze removal based on dark channel prior and image decoding acceleration method

ICIC Express Letters 2015年第3期9卷 775-781页

作者： Sun, Hong-Guang Fang, Chao Yang, Xi-Quan Yang, Feng-Qin Sun, Tie-Li Hung, Chih-Cheng School of Computer Science and Information Technology No. 2555 Jingyue Ave. Changchun China College of Humanities and Sciences Northeast Normal University No. 2555 Jingyue Ave. Changchun China Key Laboratory of Intelligent Information Processing of Jilin Universities No. 2555 Jingyue Ave. Changchun China School of Computing and Software Engineering Southern Polytechnic State University MariettaGA United States

In this paper, we propose an adaptive haze removal method based on dark channel prior. The dark channel value is compensated for estimating the transmission;the atmospheric light will be re-estimated through the analysis of the characteristics of images. Images are usually degraded with haze due to the object absorption and atmospheric scattering. The experiments show that the images recovered by the proposed method are better than other existing methods and recovered images are closer to real images. Meanwhile, the Mean Square Error (MSE) is used to verify the proposed approach for the images recovered which are taken from the FRIDA database. Through the comparison of Inverse Discrete Cosine Transforms (IDCT) of haze images and haze-free images, the statistics of the comparison shows that the haze images consume more computation time. To improve the time complexity, the Graphics processing Unit (GPU) was used to increase the computing efficiency. © 2015, ICIC International.

关键词： Graphics processing unit

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An efficient algorithm for hamilton cycle based on the enlarged rotation-extension technique

An efficient algorithm for hamilton cycle based on the enlar...

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International MultiConference of Engineers and computer Scientists, IMECS 2014

作者： Du, Lizhi College of Computer Science and Technology Wuhan University of Science and Technology Hubei Province Key Laboratory of Intelligent Information Processing and Real-Time Industrial System Wuhan430065 China

ISBN: (纸本)9789881925336

Algorithm studies on the Hamilton cycle are mainly based on the Rotation-Extension method developed by Posa. However, due to the deficiency of Posa's method, all these products are only efficient for much denser graphs or sparse but regular graphs. By many years' study, we developed the "Enlarged Rotation-Extension" technique which utterly changed and expanded the Posa's original one and can surmount its deficiency. Based on this technique, our algorithm can quickly calculate randomly produced un-directed graphs with up to ten thousand vertices on personal computer, no matter dense or sparse, the correctness is one hundred percent. We also calculated the data of hamilton cycles on a famous web site and we still got one hundred percent correctness.

关键词： Computational complexity

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Augment dependency-to-string translation with fixed and floating structures 25

Augment dependency-to-string translation with fixed and floa...

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25th International Conference on Computational Linguistics, COLING 2014

作者： Xie, Jun Xu, Jinan Liu, Qun Key Laboratory of Intelligent Information Processing Institute of Computing Technology Chinese Academy of Sciences China School of Computer and Information Technology Beijing Jiaotong University China School of Computing Dublin City University Ireland

ISBN: (纸本)9781941643266

In this paper, we propose an augmented dependency-to-string model to combine the merits of both the head-dependents relations at handling long distance reordering and the fixed and floating structures at handling local reordering. For this purpose, we first compactly represent both the head-dependent relation and the fixed and floating structures into translation rules;second, in decoding we build "on-the-fly" new translation rules from the compact translation rules that can incorporate non-syntactic phrases into translations, thus alleviate the non-syntactic phrase coverage problem of dependency-to-string translation (Xie et al., 2011). Large-scale experiments on Chinese-to-English translation show that our augmented dependency-to-string model gains significant improvement of averaged +0.85 BLEU scores on three test sets over the dependencyto- string model.

关键词： Syntactics

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An Efficient Image Enhancement Method Based on Image Saliency Detection for Portrait Photo

An Efficient Image Enhancement Method Based on Image Salienc...

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2014 International Conference on Advanced computer Science and Engineering(ACSE 2014)

作者： Si-qi WU Yao HU Wei-yu YU School of Electronic and Information Engineering South China University of Technology Provincial Key Laboratory for Computer Information Processing Technology Soochow University

The portrait region of portrait photo may be too dark due to backlight during the process of photo taking. Aiming at this problem, we propose a new image enhancement method based on histogram-based contrast method(HC) image saliency detection. Portrait area in portrait photo is the most salient region, thus we first use HC to measure saliency and then extract the portrait area from the portrait photo with the help of saliency map. We simply enhance the portrait region, keeping the background unchanged. Experiment results prove that proposed algorithm is able to compress the dynamic range of the original image and yield pleasing enhancement result.

关键词： Image enhancement Image saliency detection Portrait photo

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Protein model quality assessment by learning-to-rank

Protein model quality assessment by learning-to-rank

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IEEE International Conference on Bioinformatics and Biomedicine (BIBM)

作者： Xiaoyang Jing Qiwen Dong Xuan Liu Bin Liu School of Computer Science Fudan University Shanghai People's Republic of China Shanghai Key Laboratory of Intelligent Information Processing Shanghai People's Republic of China College of Engineering Shanghai Ocean University Shanghai People's Republic of China School of Computer Science and Technology Shenzhen Graduate School Shenzhen Guangdong People's Republic of China

ISBN: (纸本)9781467368001

Protein structures are essential to understand the function. The predicted models have a broad range of the accuracy. Reliable estimates of the model quality are critical in determining the usefulness of the model to address a specific problem. In this study, a novel method has been presented to rank the models by their relative qualities. The proposed method first extracts various features from the three dimensional structures of proteins and then the learning-to-rank algorithm is used to rank the models based on their similarities with the native structures. Furthermore, a quasi single-model method is presented, which uses the top five identified models as references and ranks the other models by the average similarity with the reference models. Benchmark test is performed on a newly developed, template-based decoy generators which covers all the main structure classes of proteins. The proposed learning-to-rank method achieves an average Pearson correlation coefficient of 0.94 and a AUC value of 0.97, which consistently outperform all other well-developed methods. The quasi single-model can further improves the performance and achieve nearly perfect results with both PCC and AUC value of 0.99. The results demonstrate that the proposed method is an effective methodology for model quality assessment and provides the state-of-the-art performance.

关键词： Proteins Biological system modeling Analytical models Benchmark testing Genomics Bioinformatics

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A Heuristic Method of Using the Pointers to Physical Effects in Su-Field Analysis

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Procedia Engineering 2015年 131卷 539-550页

作者： Wei Yan Cecilia Zanni-Merk François Rousselot Denis Cavallucci Pierre Collet School of Information Science and Engineering Shandong Normal University Jinan 250014 China Shandong Provincial Key Laboratory for Novel Distributed Computer Software Technology Jinan 250014 China LGECO / INSA Strasbourg 24 Boulevard de la Victoire 67084 Strasbourg Cedex France LSIIT / BFO Team (UMR CNRS 7005) – Pôle API BP 10413 67412 Illkirch Cedex France

While TRIZ is increasingly developing both in research and education, users always encounter difficulties in their attempts to practice it, especially for one of the most complicated inventive problem solving tools, the Su-Field analysis, which is used to analyze and improve the efficiency of a technical system. Generally, the process of using a Su-Field model to solve a specific inventive problem includes: building a Problem Model, mapping it to a Generic Problem Model, finding a Generic Solution Model based on the corresponding inventive standard and finally establishing and interpreting a Solution Model in real life. As one of the most important phases of the Su-Field analysis, the last step is normally implemented manually with the help of the pointers to physical effects, which link generic technical functions to specific applications and systems. The adequate pointer, compatible with the context of the specific problem, should be chosen to assist the users to instantiate the Solution Model. However, the pointers to physical effects and the specific problems are built at different levels of abstraction, so it is difficult for the users to choose among many eligible pointers to physical effects given a certain function. This paper proposes a heuristic method to use the pointers to physical effects based on ontology reasoning. The use of formal models, called ontologies, allows to formally define the concepts about the models and the effects and to apply logical reasoning on them. An inventive standards ontology and a physical effects ontology are firstly built to describe the process of Su- Field analysis, and then the logical reasoning rules are established according to a lexical dictionary, the analysis of the inventive standards and the physical effects. The lexical dictionary, based on WordNet, is built to improve the selection of the appropriate effect to apply. Finally, ontology reasoning is implemented to provide heuristic physical effects for the users.

关键词： Su-Field Analysis Inventive Standards Pointers to Physical Effects WordNet Ontology Reasoning

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A Method for Facilitating Inventive Design Based on Semantic Similarity and Case-Based Reasoning

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Procedia Engineering 2015年 131卷 194-203页

作者： Wei Yan Cecilia Zanni-Merk François Rousselot Denis Cavallucci School of Information Science and Engineering Shandong Normal University Jinan 250014 China Shandong Provincial Key Laboratory for Novel Distributed Computer Software Technology Jinan 250014 China LGECO / INSA Strasbourg 24 Boulevard de la Victoire 67084 Strasbourg Cedex France LSIIT / FDBT Team (UMR CNRS 7005) – Pôle API BP 10413 67412 Illkirch Cedex France

While TRIZ is increasingly developing both in research and education, new users always encounter difficulties in their first attempts to practice it. In such situation, Altshuller's original matrix often appears as an “easy-to-begin- with” tool. However, while not being representative of what TRIZ really is, it continues to seduce new users, teachers and trainers. Several approaches to automate the use of the contradiction matrix have been proposed in literature, and researches on the automatic match between specific parameters of the artefact being considered and Altshuller's generalized parameters remains a topic of interest. In this paper, we propose a way to automate the proposal of equivalencies between a specific parameter and a generic parameter from the matrix. This method calculates the semantic distance between short texts, and uses it to fill the semantic gap between the specific parameters of the artefact and the generalized ones. Case-based reasoning is also used to improve the whole accuracy of the method.

关键词： Ontology Semantic distance information content WordNet Case-based reasoning

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Ontology-based Knowledge Modeling for Using Physical Effects

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Procedia Engineering 2015年 131卷 601-615页

作者： Wei Yan Cecilia Zanni-Merk François Rousselot Denis Cavallucci Pierre Collet School of Information Science and Engineering Shandong Normal University Jinan 250014 China Shandong Provincial Key Laboratory for Novel Distributed Computer Software Technology Jinan 250014 China LGECO / INSA Strasbourg 24 Boulevard de la Victoire 67084 Strasbourg Cedex France ICube / BFO Team (UMR CNRS 7005) – Pôle API BP 10413 67412 Illkirch Cedex France

Su-Field analysis, as one of the inventive problem solving tools, can be used to analyse and improve the efficacy of the technical system. Generally, the process of using Su-Field model to solve a specific inventive problem includes: building a Problem Model, mapping to a Generic Problem Model, finding a Generic Solution Model based on the corresponding inventive standard, and finally establishing and instantiating a Solution Model. As one of the most important phases of Su-Field analysis, the last step is normally implemented manually with the help of physical effects, which link generic technical functions with specific applications and systems. The physical effects compatible with the context of the specific problem should be chosen to assist the users to instantiate the Solution Model. However, the physical effects and the specific problems are built at different levels of abstraction, and it is difficult for the users to choose, that is, given a certain function, too many physical effects are chosen while with the detailed context of the problem, no physical effect is returned. This paper firstly proposes a new way of representing physical effects using the change of two states, that is, the couple of two states before and after applying physical effects. Then, the knowledge about using physical effects is formalized in OWL (Ontology Web Language) - an ontology language for semantic web, and the constraint knowledge, such as the condition to use each kind of physical effect, is formalized in SWRL (Semantic Web Rule Language) - a rule language. Finally, the reasoning process of using physical effects is performed with the support of JESS (Java Expert System Shell) rule engine.

关键词： Physical Effects Ontology OWL (Ontology Web Language) SWRL (Semantic Web Rule Language) JESS (Java Expert System Shell)

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A real-time information perceived vehicle opportunity route: RIPVO 1

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7th China Conference of Wireless Sensor Networks, CWSN 2013

作者： Li, Kelei Wang, Xinhua Lv, Mianmian Wang, Zhen Information Science and Engineering Shandong Normal University Jinan 250014 China Shandong Provincial Key Laboratory for Novel Distributed Computer Software Technology Jinan 250014 China

ISBN: (数字)9783642541742

ISBN: (纸本)9783642541735

Considering that VANET may reflect the characters of opportunity network, a routing scenario with real-time information perceiving is proposed in this paper. First, a node executes limited and directed data flooding and then carries out feedback with modified greedy algorithm using hot area. In this strategy, nodes dynamically adjust parameters by self-learning properly. The experiment result under ONE simulator shows its promotion comparing to classic Epidemic, etc. © 2014 Springer-Verlag Berlin Heidelberg.

关键词： Delay tolerant networks

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Dynamic anti-windup design for anticipatory activation:enlargement of the domain of attraction

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Science China(information Sciences) 2014年第1期57卷 164-177页

作者： WU XiongJun LIN Zongli Department of Automation Shanghai Jiao Tong University and Key Laboratory of System Control and Information ProcessingMinistry of Education of China The 802 Institute of Shanghai Academy of Space Flight Technology The Eighth Academy of China Aerospace Science and Technology Corporation Charles L. Brown Department of Electrical and Computer Engineering University of Virginia

Traditional anti-windup compensators are designed for activation immediately at the occurrence of actuator ***,anti-windup compensators were designed for actuation either after the saturation has reached a certain level or in anticipation of its *** the case of static anti-windup compensators,it has been shown that an anti-windup compensator designed for activation in anticipation of actuator saturation would lead to better performance than those designed for immediate or delayed activation could,both in terms of transient performance and the size of the domain of *** recently,it has been shown that a dynamic anti-windup compensator designed for anticipatory activation would also result in better transient performance than those designed for immediate or delayed activation *** this paper,we design dynamic anti-windup compensators for the enlargement of the domain of *** compensators are designed respectively for immediate,delayed and anticipatory *** will show by simulation that a dynamic anti-windup compensator designed for anticipatory activation would result in a larger domain of attraction than a dynamic anti-windup compensator designed for immediate or delayed activation could.

关键词： actuator saturation anti-windup anticipatory activation domain of attraction dynamic com-pensator

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