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	1. Optimal View Detection for Automatic Photographing on a Wireless-controlled Drone
	Xiong Xiaoliang,Feng Jie,Zhou Bingfeng
	Computer Science and Technology 11 December 2015
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	Abstract:Automatic photographing is a challenge problem because it is difficult to measure the illumination, the color and the composition during taking photos. In this work, we focus on the image composition optimization and make use of the currently popular aerocraft "Drone" to create a flying automatic photographer. Some commonly used composition guidelines are adopted to calculate an aesthetic score of an image, based on which the photographer make some adjustments to a better view, until an optimal view is detected and a photo is token. Experiments demonstrate that our optimal view detection strategy is effective.
	TO cite this article:Xiong Xiaoliang,Feng Jie,Zhou Bingfeng. Optimal View Detection for Automatic Photographing on a Wireless-controlled Drone[OL].[11 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4666739


	2. Image-based Anisotropic Material Modeling on 3D Surfaces
	Chen Yu,Feng Jie,Zhou Bingfeng
	Computer Science and Technology 07 December 2015
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	Abstract:Material modeling plays an important role in reproducing realistic scenes. In this paper, we present a method for modeling anisotropic materials on 3D surfaces through simple procedures. First, we use the depth camera of the Microsoft Kinect to obtain the geometric information of 3D material surfaces, and utilizing the RGB camera on Kinect, a highlighted color image of the material which contains the reflectance information is captured under a point light. Then, we fit the reflectance data into a BRDF model and obtain a group of optimized parameters. Therefore, new images can be rendered with these parameters and geometric information under new lighting and viewing conditions.
	TO cite this article:Chen Yu,Feng Jie,Zhou Bingfeng. Image-based Anisotropic Material Modeling on 3D Surfaces[OL].[ 7 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4666548

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	3. Fast Video Stream Super Resolution Reconstruction based on CUDA
	LI Ying,HU Jie,LI Hailiang,SHEN Qiang
	Computer Science and Technology 04 December 2015
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	Abstract:This paper presents a parallel GPU-based solution for video stream super resolution reconstruction. We propose an approach, using the computer unified device architecture (CUDA) platform developed by NVIDIA, to partition the steps of the non-local iterative back projection (NLIBP) algorithm (which is designed for single image super resolution reconstruction). The approach also exploits the redundant information of the video stream in the time-space domain in an effort to further reduce the unnecessary searching work in the motion estimation process. The use of CUDA enhances the programmability and flexibility for general-purpose computation of GPU. Experimental results show that, with the assistance of CUDA, the processing time is approximately 8 times faster than that of using CPU only in C++ language, while preserving good visual quality of the reconstructed video stream.
	TO cite this article:LI Ying,HU Jie,LI Hailiang, et al. Fast Video Stream Super Resolution Reconstruction based on CUDA[OL].[ 4 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4663992


	4. Zooming image by a combination of bi-cubic polynomial with edges as twice constraints
	LIU Ye-Penguin, ZHANG Cai-Ming
	Computer Science and Technology 03 December 2015
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	Abstract:The clarity and efficiency of the generated image is an important indicator which measures the quality of image zooming. Compared image which is obtained by existed zooming algorithm with the real images, it is more blurrier and consumes much time. On the basis of the existing scaling algorithm, this paper presents a zooming image by a combination of bi-cubic polynomial with edges as twice constraints algorithm. Algorithm is divided into two parts, in the first process, suppose the original scene surface corresponding to given data of the image can be represented by piecewise quadratic polynomial surface, and we can obtain the fitting surface by reversing of solving the image data. Then,by integrated to he fitting surface we can obtain a zooming image which is more blurrier in visual and fidelity. The initial image contains a lot of details of the information, but does not reflect visually. In the second process, it is the purpose that extracts the hide information and makes the image has better visual effect. By comparison, the new algorithm has better amplification effect and higher precision in visual, and spent less time.
	TO cite this article:LIU Ye-Penguin, ZHANG Cai-Ming. Zooming image by a combination of bi-cubic polynomial with edges as twice constraints[OL].[ 3 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4666447


	5. Sparse Sampling and Completion for Light Transport in VPL-based Rendering
	Yuchi Huo, Rui Wang, Xinguo Liu, Hujun Bao
	Computer Science and Technology 26 November 2015
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	Abstract:The many-light formulation provides a general framework for rendering various illumination effects using hundreds of thousands of virtual point lights (VPLs). To efficiently gather the contributions of the VPLs, lightcuts and its extensions cluster the VPLs, which implicitly approximates the lighting matrix with some representative blocks similar to vector quantization. In this paper, we propose a new approximation method based on the previous lightcut method and a low-rank matrix factorization model. As many researchers pointed out, the lighting matrix is low rank, which implies that it can be completed from a small set of known entries.We first generate a conservative global light cut with bounded error and partition the lighting matrix into slices by the coordinate and normal of the surface points using the method of lightslice. Then we perform two passes of randomly sampling on each matrix slice. In the first pass, uniformly distributed random entries are sampled to coarsen the global light cut, further clustering the similar light for the spatially localized surface points of the slices. In the second pass, more entries are sampled according to the possibility distribution function estimated from the first sampling result. Then each matrix slice is factorized into a product of two smaller low-rank matrices constrained by the sampled entries, which delivers a completion of the lighting matrix. The factorized form provides an additional speedup for adding up the matrix columns which is more GPU friendly. Compared with the previous lightcut based methods, we approximate the lighting matrix with some signal specialized bases via factorization. The experimental results shows that we can achieve significant acceleration than the state of the art many-light methods.
	TO cite this article:Yuchi Huo, Rui Wang, Xinguo Liu, et al. Sparse Sampling and Completion for Light Transport in VPL-based Rendering[OL].[26 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4663747


	6. Detecting Spatial-Temporal Subject Caption for News Video
	Wang Xihan,Feng Xiaoyi,Peng Jinye
	Computer Science and Technology 23 November 2015
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	Abstract:With the increasing popularity of Internet news video analysis, indexing, and retrieval, locate both spatial and temporal positions of captions in news video becomes a challenging task. Most existing methods have focused on detecting texts in staitc frame and tracking in different frames. In this paper, we propose an effective and efficient system for detecting news video subject caption by using spatial and temproal imformation. An classification scheme is equipped in Our alogrithm and a set of spatial-temporal features specially designed for eliminating false caption candidates. The experimental results on our datasets have shown the robustness and efficiency of the proposed method.
	TO cite this article:Wang Xihan,Feng Xiaoyi,Peng Jinye. Detecting Spatial-Temporal Subject Caption for News Video[OL].[23 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4665038


	7. An optimized design technique for artificial signal peptides
	GAO Cuifang,WANG Sen,TIAN Fengwei,ZHU Ping,CHEN Wei
	Computer Science and Technology 19 November 2015
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	Abstract:To determine optimal artificial signal peptide candidates for the possiblity of creating high levels of secretion of heterologous proteins, substitution and redesign of amino acid sequences in the H-domain of the signal peptide was theoretically attempted. The method was based on comprehensive score matrix and Markov transfer matrix, which can make the artificial sequence to maintain the structural characteristics and original polarity of signal peptides. For the artificial sequence, the feature vector of structural fusion degree (SFD) is first extracted to quantitatively describe the compatibility of artificial spliced region, then by comparing with highly secreted natural samples; tendencies for specific substitutions in the amino acid sequence can be identified at certain specific locations. These substitutions may represent the key amino acids that influence the secretion and expression levels of heterologous proteins.
	TO cite this article:GAO Cuifang,WANG Sen,TIAN Fengwei, et al. An optimized design technique for artificial signal peptides[OL].[19 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4663429


	8. Proactive Pod-Based Load Balancing in Data Center Network
	Yan Junchi,Li Xiuhua
	Computer Science and Technology 08 November 2015
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	Abstract:Fat-tree structure is widely adopted in data center network for its high bisection. There have been lots of researches of load balancing in fat-tree topology network. Static ECMP is easily trapped in local optimum and centralized scheduler causes large overheads. In this paper, we proposed a ProAcive Pod-Based (PAPB) load balancing scheme. PAPB is based on SDN architecture, thus gets a global congestion aware of network. Proactive and pod based flow instantiation reduce the number of flow entries in an OpenFlow switch and decrease the overheads between control plane and data plane. Simulation shows that our PAPB scheme greatly reducing the packet loss rate and the queue length compared to ECMP and RR.
	TO cite this article:Yan Junchi,Li Xiuhua. Proactive Pod-Based Load Balancing in Data Center Network[OL].[ 8 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4660721


	9. The Calculation of Isogeometric Analysis in the Two-dimensional Problems of Linear Elasticity
	Du Xiaoxiao,Zhao Gang,Wang Wei
	Computer Science and Technology 01 November 2015
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	Abstract:Isogeometric analysis bridges the gap between the fields of CAD (Computer-Aided Design) and CAE (Computer-Aided Engineering) with the concept that the NURBS(Non-Uniform Rational B-Spline) basis function widely used for geometry description is employed to approximate the field variables such as nodal displacement, stress and strain in FEA(Finite Element Analysis). The problems in linear elasticity are the original examples successfully solved by finite element analysis and still occupy a large part of industrial applications, therefore we apply the method of IGA (isogeometric analysis) to solve this problem and proved the effectiveness of this newly invented approach.
	TO cite this article:Du Xiaoxiao,Zhao Gang,Wang Wei. The Calculation of Isogeometric Analysis in the Two-dimensional Problems of Linear Elasticity[OL].[ 1 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4659829


	10. Tourism Spatial Relation Extraction Based on Clustering
	Jin Zhiyao,Du Junping
	Computer Science and Technology 19 October 2015
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	Abstract:This paper studied a relation extraction approach based on clustering to solve the problem of tourism spatial relation predefining. Firstly we extracted the spatial feature words from domain corpus basing on bootstrapping iteration. Secondly we calculated the similarity between words through semantic thesauruses. Finally, the feature words are clustered and every cluster represents a kind of entity relation discovered automatically. The experimental results showed that this approach has a good performance. The relation extraction based on HowNet ac-quires the best F value (0.618), which has almost the same effect as manual work, proving the efficiency and feasibility of the method.
	TO cite this article:Jin Zhiyao,Du Junping. Tourism Spatial Relation Extraction Based on Clustering[OL].[19 October 2015] http://en.paper.edu.cn/en_releasepaper/content/4658282

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