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Future Trends in computer graphics： How Much is Enough？

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Journal of computer Science & Technology 2003年第5期18卷 531-537页

作者： A.R.Forrest SchoolofComputingSciences UniversityofEastAngliaNorwichU.K.

Over the forty-year history of interactive computer graphics, there have beencontinuous advances, but at some stage this progression must terminate with images beingsufficiently realistic for all practical purposes. How much detail do we really need? Polygon countsover a few million imply that on average each polygon paints less than a single pixel, making useof polygon shading hardware wasteful. We consider the problem of determining how much realism isrequired for a variety of applications. We discuss how current trends in computer graphics hardware,and in particular of graphics cards targeted at the computer games industry, will help or hinderachievement of these requirements. With images now being so convincingly realistic in many cases,critical faculties are often suspended and the images are accepted as correct and truthful althoughthey may well be incorrect and sometimes misleading or untruthful. Display resolution has remainedlargely constant in spatial terms for the last twenty years and in terms of the number of pixels hasincreased by less than an order of magnitude. If the long-promised breakthroughs in displaytechnology are finally realised, how should we use the increased resolution?

关键词： computer graphics displays graphics hardware human vision point-basedmodelling

A review of computer graphics approaches to urban modeling from a machine learning perspective

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Frontiers of Information Technology & Electronic Engineering 2021年第7期22卷 915-925页

作者： Tian FENG Feiyi FAN Tomasz BEDNARZ Department of computer Science and Information Technology La Trobe UniversityVIC 3086Australia Institute of Computing Technology Chinese Academy of SciencesBeijing 100190China Expanded Perception and Interaction Centre University of New South WalesNSW 2021Australia CSIRO's Data61 NSW 2015Australia

Urban modeling facilitates the generation of virtual environments for various scenarios about *** requires expertise and consideration,and therefore consumes massive time and computation ***,related tasks sometimes result in dissatisfaction or even *** challenges have received significant attention from researchers in the area of computer ***,the burgeoning development of artificial intelligence motivates people to exploit machine learning,and hence improves the conventional *** this paper,we present a review of approaches to urban modeling in computer graphics using machine learning in the literature published between 2010 and *** serves as an overview of the current state of research on urban modeling from a machine learning perspective.

关键词： Urban modeling computer graphics Machine learning Deep learning

A computer graphics-Based Framework for 3D Pose Estimation of Pedestrians

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Automotive Innovation 2021年第3期4卷 338-349页

作者： Jisi Tang Qing Zhou State Key Laboratory of Automotive Safety and Energy School of Vehicle and MobilityTsinghua UniversityBeijing 100084China

In pedestrian-to-vehicle collision accidents,adapting safety measures ahead of time based on actual pose of pedestrians is one of the core objectives for integrated *** can significantly enhance the performance of passive safety system when active safety maneuvers fail to avoid *** study proposes a deep learning model to estimate 3D pose of pedestrians from *** conventional pedestrian image datasets do not have available pose features to work with,a computer graphics-based(CG)framework is established to train the system with synthetic *** 3D meshes of standing males are first transformed into several walking poses,and then rendered as images from multiple view ***,a matrix of 50 anthropometries,10 gaits and 12 views is built,in total of 6000 images.A two-branch convolutional neural network(CNN)was trained on the synthetic *** model can simultaneously predict 16 joint landmarks and 14 joint angles of pedestrian for each image with high *** errors of the predictions are 0.54 pixels and−0.06°,*** specific pose can then be completely reconstructed from the ***,the current study has established a CG-based pipeline to generate photorealistic images with desired features for the training;it demonstrates the feasibility of leveraging CNN to estimate the pose of a walking pedestrian from synthesized *** proposed framework provides a starting point for vehicles to infer pedestrian poses and then adapt protection measures accordingly for imminent impact to minimize pedestrian injuries.

关键词： Pose estimation Pedestrian safety computer graphics Convolutional neural network

Discriminating between photorealistic computer graphics and natural images using fractal geometry

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Science in China(Series F) 2009年第2期52卷 329-337页

作者： PAN Feng CHEN JiongBin HUANG JiWu Guangdong Key Lab of Information Security Technology School of Information Science and Technology Sun Yat-Sen UniversityGuangzhou 510275 China

Rendering technology in computer graphics （CG） is now capable of producing highly photorealistic images, giving rise to the problem of how to identify CG images from natural images. Some methods were proposed to solve this problem. In this paper, we give a novel method from a new point of view of image perception. Although the photorealistic CG images are very similar to natural images, they are surrealistic and smoother than natural images, thus leading to the difference in perception. A pert of features are derived from fractal dimension to capture the difference in color perception between CG images and natural images, and several generalized dimensions are used as the rest features to capture difference in coarseness. The effect of these features is verified by experiments. The average accuracy is over 91.2%.

关键词： image forensics computer graphics natural image fractal image authentication

PHOTOREALISTIC computer graphics FORENSICS BASED ON LEADING DIGIT LAW

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Journal of Electronics(China) 2011年第1期28卷 95-100页

作者： Xu Bo Wang Junwen Liu Guangjie Dai Yuewei School of Automation Nanjing University of Science ＆ Technology Nanjing 210004 China

As the advent and growing popularity of image rendering software,photorealistic computer graphics are becoming more and more perceptually indistinguishable from photographic *** the faked images are abused,it may lead to potential social,legal or private *** this end,it is very necessary and also challenging to find effective methods to differentiate between *** this paper,a novel leading digit law,also called Benford's law,based method to identify computer graphics is *** specifically,statistics of the most significant digits are extracted from image's Discrete Cosine Transform(DCT) coefficients and magnitudes of image's gradient,and then the Support Vector Machine(SVM) based classifiers are *** of experiments on the image datasets indicate that the proposed method is comparable to prior ***,it possesses low dimensional features and low computational complexity.

关键词： Leading digit law Benford’s law Digital image forensic computer graphics

Learning computer graphics: From 3D Models to Animated Movies on Your PC 1

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APPLICATION OF computer graphics IN MARTENSITIC TRANSFORMATION

1998年

作者： Shalini Govil-Pai Rajesh Pai (auth.)

来源：畅想之星图书光盘版（南... 评论

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Acta Metallurgica Sinica(English Letters) 1994年第2期7卷 103-106页

作者： Zhou JianqiSouthern Naval Unit of Institute of Naval Technical Equipment in Zhanjiang Manuscript received 18 April, 1994

This paper discuss the stereographic method of martensitic transformation (MT)in the view of computer graphics (CG) and programs are programmed to realize this method. Habit plane resulting from the programs agrees with that of numerical analysis in terms of the lattice parameters of austenite and martensite and shear mechanism supposed in Fe-22%Ni-0.8%C alloy, so does orientation relationships.

关键词： stereograpllic projection martensitic transformation computer graphics

Trends in computer graphics for the 1990's

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computer Aided Drafting,Design and Manufacturing 1991年第1期2卷 1-10页

作者： John STAUDHAMMER

We look at expected developments in computer graphics system capabilities for the next *** underlying thrust is an expected system hardware capability increase of around 50% per *** sizes are expected to double every 12 to 18 *** of this system capability in- crease will be used in better and more elaborate simulations,detailed analyses of experimental and com- puted data(***)and more convenient user *** overall effect by the end of the decade will be an increase in simulation capabilties of about fifty-fold,bringing affordable detailed analy- sis and interpretation of data to all engineering,scientific and business *** with these system growths is a need to re-examine graphics algorithms with the view of effectively utilizing the vastly increased memory sizes and employing specialized autonomous parallel computing structure.

关键词： computer graphics Workstation hardware Workstation software

From Sources to Narratives： The role of computer graphics in Communicating Cultural Heritage Information

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Journalism and Mass Communication 2017年第9期7卷 497-502页

作者： Simone Zambruno Alberto Urcia Manuela DeVivo Antonino Vazzana Alessandro Iannucci University of Bologna RavennaItaly Yale University New HavenUSA

During the last years, the topic of accessibility of cultural heritage is getting so important all around the Europe. For disseminating a research data and information, it is important to use a simple language and an effective communication. The data research produced by specialists has three formal levels： The third one of communication system aims to break barriers to reach a wide audience. The present study wants to demonstrate the role of images in the process of deductive inference by three dimensional （3D） reconstruction of cultural heritage. The case study of Federico da Montefeltro office shows how inter-disciplinary works and technological resource can help society to understand history and meaning of heritage.

关键词： computer graphics three dimensional (3D) modelling virtual reconstruction virtual tour inter-disciplinary research