检索结果-内蒙古大学图书馆

Pattern Recognition and Machine Intelligence 2011

丛书名： Lecture Notes in computer Science

2011年

作者： Sergei O. Kuznetsov Deba P. Mandal Malay K. Kundu Sankar Kumar Pal

ISBN: (数字)9783642217869

ISBN: (纸本)9783642217852

this book constitutes the refereed proceedings of the 4th International conference on Pattern Recognition and Machine Intelligence, PReMI 2011, held in Moscow, Russia in June/July 2011. the 65 revised papers presented together with 5 invited talks were carefully reviewed and selected from 140 submissions. the papers are organized in topical sections on pattern recognition and machine learning; image analysis; image and video information retrieval; natural language processing and text and data mining; watermarking, steganography and biometrics; soft computing and applications; clustering and network analysis; bio and chemo analysis; and document image processing.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Recognition of Multi-Oriented Touching Characters in Graphical Documents

Recognition of Multi-Oriented Touching Characters in Graphic...

引用

6th indian conference on computer vision, graphics and image processing

作者： Roy, Partha Pratim Pal, Umapada Llados, Josep Univ Autonoma Barcelona Comp Vis Ctr Bellaterra 08193 Spain Indian Stat Inst Comp Vision & Pattern Recognit Unit Kolkata India

ISBN: (纸本)9781424442195

Touching characters are major problem of achieving higher recognition rate in Optical Character Recognition (OCR). Present OCR systems do not perform well when adjacent characters touch. If characters are touched in graphical documents (e.g. map) then such touching string recognition is more difficult because in such documents touching characters appear in multi-oriented direction. In this paper, we present a scheme towards the recognition of English two-character multi-oriented touching strings. When two or more characters touch, the), generate a big cavity region at the background portion and we used this background information in our scheme. To handle the background information, convex hull is used. In this scheme, at first, a set of initial segmentation points is predicted based on the concave residues of the convex hull of the touching characters. Next, based on the initial points, we select some candidate segmentation lines. Finally the recognition confidence of two sub-images of a touching string, obtained from each candidate segmentation line is computed. the candidate segmentation line from which we get optimum confidence is the actual segmentation line and the corresponding characters in favour of which the two segmentation parts show optimum confidence is the recognition result of the touching string. To compute the recognition confidence, SVM classifier is used. the features used in the SVM are invariant to character orientation. Circular ring and convex hull ring based approach has been used along with angular information of the contour pixels of the character to make the feature rotation invariant. From the experiment we obtained encouraging result.

关键词： Optical character recognition

来源：评论

学校读者我要写书评

暂无评论

Multiple Kernel Fisher Discriminant Metric Learning for Person Re-identification 11

Multiple Kernel Fisher Discriminant Metric Learning for Pers...

引用

11th indian conference on computer vision, graphics and image processing (ICVGIP)

作者： Ali, T. M. Feroz Velmurugan, Rajbabu Patel, Kalpesh K. Chaudhuri, Subhasis Indian Inst Technol Dept Elect Engn Mumbai Maharashtra India

ISBN: (纸本)9781450366151

Person re-identification addresses the problem of matching pedestrian images across disjoint camera views. Design of feature descriptor and distance metric learning are the two fundamental tasks in person re-identification. In this paper, we propose a metric learning framework for person re-identification, where the discriminative metric space is learned using Kernel Fisher Discriminant Analysis (KFDA), to simultaneously maximize the inter-class variance as well as minimize the intra-class variance. We derive a Mahalanobis metric induced by KFDA and argue that KFDA is efficient to be applied for metric learning in person re-identification. We also show how the efficiency of KFDA in metric learning can be further enhanced for person re-identification by using two simple yet efficient multiple kernel learning methods. We conduct extensive experiments on three benchmark datasets for person re-identification and demonstrate that the proposed approaches have competitive performance with state-of-the-art methods.

关键词： Person Re-identification Metric Learning Kernel Fisher Discriminant Analysis Multiple Kernel Fisher Discriminant Analysis

来源：评论

学校读者我要写书评

暂无评论

PCA based video denoising in a non-local means framework 12

PCA based video denoising in a non-local means framework

引用

8th indian conference on computer vision, graphics and image processing, ICVGIP 2012

作者： Bhujle, Hemalata Chaudhuri, Subhasis Vision and Image Processing Lab. Department of Electrical Engineering Indian Institute of Technology Bombay Powai Mumbai India

ISBN: (纸本)9781450316606

Nonlocal means (NLM) video denoising algorithm though provide very competitive results, suffer from high computational cost. We propose to reduce the computations through the concept of dimensionality reduction using principle component analysis (PCA). image neighbourhood representations are projected onto a lower dimensional subspace determined by PCA and weights are computed in this reduced subspace. Principle components are computed globally for an entire video shot having similar frames, which reduces computations drastically. We have used a technique of histogram difference to group the frames with similar visual content. We have achieved an improvement in accuracy in addition to reducing the computation. the proposed method is shown to outperform all other nonlocal means related video denoising methods. © 2012 ACM.

关键词： Principal component analysis

来源：评论

学校读者我要写书评

暂无评论

2D multilayer painterly rendering with automatic focus extraction

2D multilayer painterly rendering with automatic focus extra...

引用

14th International conference in Central Europe on computer graphics, Visualization and computer vision 2006, WSCG'2006 - In Co-operation with EUROgraphics

作者： Kovács, Levente Szirányi, Tamás University of Veszprém Dept. of Image Processing and Neurocomp. Egyetem u. 10. H-8200 Veszprém Hungary Hungarian Academy of Sciences Comp. and Automation Research Institute Kende u. 15 H-1111 Budapest Hungary

ISBN: (纸本)8086943038

We present an automatic two dimensional model based non-photorealistic painterly rendering method which uses automatic relative focus map extraction from the model image to produce a relevance-based multilayer painting. Using relative focus segmentation, the painterly rendered image will be built of differently detailed layers. Copyright © UNION Agency - Science Press.

关键词： Extraction

来源：评论

学校读者我要写书评

暂无评论

Fast and High-Quality Bilateral Filtering Using Gauss-Chebyshev Approximation 11

Fast and High-Quality Bilateral Filtering Using Gauss-Chebys...

引用

11th International conference on Signal processing and Communications (SPCOM)

作者： Ghosh, Sanjay Chaudhury, Kunal N. Indian Inst Sci Dept Elect Engn Bangalore Karnataka India

ISBN: (纸本)9781509017461

the bilateral filter is an edge-preserving smoother that has diverse applications in image processing, computer vision, computer graphics, and computational photography. the filter uses a spatial kernel along with a range kernel to perform edge-preserving smoothing. In this paper, we consider the Gaussian bilateral filter where both the kernels are Gaussian. A direct implementation of the Gaussian bilateral filter requires O (sigma(2)(s)) operations per pixel, where sigma(s) is the standard deviation of the spatial Gaussian. In fact, it is well-known that the direct implementation is slow in practice. We present an approximation of the Gaussian bilateral filter, whereby we can cut down the number of operations to O (1) per pixel for any arbitrary sigma(s), and yet achieve very high-quality filtering that is almost indistinguishable from the output of the original filter. We demonstrate that the proposed approximation is few orders faster in practice compared to the direct implementation. We also demonstrate that the approximation is competitive with existing fast algorithms in terms of speed and accuracy.

关键词： Fast algorithm bilateral filter Gaussian kernel Chebyshev polynomial minimax approximation

来源：评论

学校读者我要写书评

暂无评论

Clinical image-Based Procedures. From Planning to Intervention 1

引用

丛书名： Lecture Notes in computer Science

1000年

作者： Klaus Drechsler Cristina Oyarzun Laura Stefan Wesarg Marius Erdt Marius George Linguraru Raj Shekhar Karun Sharma

ISBN: (数字)9783642380792

ISBN: (纸本)9783642380785

this book constitutes the thoroughly refereed post-workshop proceedings of the International Workshop on Clinical image-based Procedures: From Planning to Intervention, CLIP 2012, held in Nice, France, in conjunction with the 15th International conference on Medical image Computing and computer-Assisted Intervention, MICCAI 2012. this successful workshop was a productive and exciting forum for the discussion and dissemination of clinically tested, state-of-the-art methods for image-based planning, monitoring and evaluation of medical procedures. the 16 papers presented in this volume were carefully reviewed and selected from 24 submissions.

关键词： image processing and computer vision Pattern Recognition User Interfaces and Human computer Interaction computer graphics computer Imaging, vision, Pattern Recognition and graphics Simulation and Modeling

来源：评论

学校读者我要写书评

暂无评论

A system for view-dependent animation

引用

computer graphics FORUM 2004年第3期23卷 411-420页

作者： Chaudhuri, P Kalra, P Banerjee, S Indian Inst Technol Dept Comp Sci & Engn New Delhi 110016 India

In this paper we present a novel system for facilitating the creation of stylized view-dependent 3D animation. Our system harnesses the skill and intuition of a traditionally trained animator by providing a convivial sketch based 2D to 3D interface. A base mesh model of the character can be modified to match closely to an input sketch, with minimal user interaction. To do this, we recover the best camera from the intended view direction in the sketch using robust computer vision techniques. this aligns the mesh model with the sketch. We then deform the 3D character in two stages-first we reconstruct the best matching skeletal pose from the sketch and then we deform the mesh geometry. We introduce techniques to incorporate deformations in the view-dependent setting. this allows us to set up view-dependent models for animation.

关键词： computer graphics DIGITAL image processing GRAPHIC arts computer-generated imagery ANIMATION (Cinematography) computer systems

来源：评论

学校读者我要写书评

暂无评论

Video Dehazing using LMNN with respect to Augmented MRF 11

Video Dehazing using LMNN with respect to Augmented MRF

引用

11th indian conference on computer vision, graphics and image processing (ICVGIP)

作者： Borkar, Kushal Mukherjee, Snehasis Indian Inst Informat Technol Sric Chittoor Andhra Pradesh India

ISBN: (纸本)9781450366151

the presence of haze within the atmospheric medium degrades the quality of videos captured by camera sensors. the expulsion of haze, referred to as dehazing, is typically performed subject to the physical degradation display, that involves an explanation of an ill-posed inverse drawback. A few efforts have been made for image dehazing, whereas, video dehazing still remains an unexplored area of research. this paper proposes an approach for video dehazing combining the concepts of single image dehazing, optical stream estimation and Markov Random Field (MRF). the proposed method enhances the temporal and spatial coherence of the hazy video. Assuming that the dark channel of the haze-free picture is zero, we acquire the raw transmission map. In the proposed approach, we focus on the raw transmission map obtained from the dark channel prior using guided filter. We assess the forward and reverse optical streams between the neighboring frames to locate individual pixels using Linear Discriminant Analysis. the color of the haze-free pixels in the frames is approximated by a few hundred discrete colors, which generate a fixed cluster in space and the directions of the pixel. the pixels at a given cluster are spread and can be determined by analyzing the forward and in reverse optical frames to predict its value after haze removal. Largest Margin Nearest Neighbor (LMNN) algorithm is applied to get the smooth transmission map of the foggy frames of the video to approximate the pixel value in the RGB space. the stream fields are utilized in an augmented MRF model on the transmission guide obtained to enhance the temporal and the spatial coherence of the transmission. the proposed method is compared against the state-of-the-art on both real and synthetic videos to preserve the information optimally.

关键词： video dehazing video-based modelling transmission estimation bayes largest margin nearest neighbor regularization

来源：评论

学校读者我要写书评

暂无评论

Purchase intentions in league of legends – the role of individual and cultural differences for explaining social identification 12

Purchase intentions in league of legends – The role of indi...

引用

12th International conference on Interfaces and Human computer Interaction 2018, 11th International conference on Game and Entertainment Technologies 2018 and 12th International conference on computer graphics, Visualization, computer vision and image processing 2018, part of the Multi conference on computer Science and Information Systems 2018, MCCSIS 2018

作者： Kordyaka, Bastian Jahn, Katharina Niehaves, Bjoern University of Siegen Kohlbettstraße 15 Siegen57072 Germany

ISBN: (纸本)9789898533791

Multiplayer Online Battle Arena (MOBA) is a computer game genre with increasing popularity and leaping revenues. the MOBA phenomenon is particularly interesting from an economic perspective since the majority of purchases consists of virtual items with hedonic value. Although research has already identified meaningful explanations, an answer to the question what motivates players to purchase virtual items in the specific context of the most successful MOBA game League of Legends (LoL) is still scarce. We build upon the assumptions of the social identity approach to explain purchases of virtual items. Additionally, we investigate individual and cultural antecedents of social identification. Results of our survey (n=181) indicate that social identification holds the potential to explain the intention to purchase virtual items and that cultural (patriotism) as well as individual (psychosocial development) factors predict social identification. © 2018.

关键词： computer games

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：