• Title/Summary/Keyword: Real-time Game

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Minimum-Cost Path Finding Algorithm in Real-Time For Computer Generated Force (실시간성을 고려한 가상군 최소비용 길 찾기 알고리즘)

  • Han, Chang-Hee;Min, Young-Hye;Park, Sang-Hyuk;Kim, Jai-Hoon
    • Journal of the Institute of Electronics Engineers of Korea CI
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    • v.48 no.1
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    • pp.17-25
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    • 2011
  • At the computer games, we can experience a variety of environments using a virtual object. It is similar to that be trained in War-game simulator of the defense. Actual soldiers and a computer-generated virtual group(Computer Generated Force: CGF) in 3-D virtual battlefield environment are training. However, path finding algorithm, one of the techniques of simulation models, to the current level only considers the shortest time path. So, this current level at the special situation of the army in the battlefield for selecting the optimal path is limited. The focus of this paper is to select the least-cost path using the deadline with several different mission conditions(METT+TC). For the only shortest time path algorithm and the least-cost path algorithm using dealine,($d_t$, one of METT+TC elements), Its usefulness is verifying the change of the move spent time(t) for all possible paths and the fighting power of the combat troops(Troops ability, a) through a comparison of the total cost of moves(c(t)). According to the results, when considering the deadline, the proposed algorithm saves about 62.5% of the maximum cost.

Cooperative Multi-Agent Reinforcement Learning-Based Behavior Control of Grid Sortation Systems in Smart Factory (스마트 팩토리에서 그리드 분류 시스템의 협력적 다중 에이전트 강화 학습 기반 행동 제어)

  • Choi, HoBin;Kim, JuBong;Hwang, GyuYoung;Kim, KwiHoon;Hong, YongGeun;Han, YounHee
    • KIPS Transactions on Computer and Communication Systems
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    • v.9 no.8
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    • pp.171-180
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    • 2020
  • Smart Factory consists of digital automation solutions throughout the production process, including design, development, manufacturing and distribution, and it is an intelligent factory that installs IoT in its internal facilities and machines to collect process data in real time and analyze them so that it can control itself. The smart factory's equipment works in a physical combination of numerous hardware, rather than a virtual character being driven by a single object, such as a game. In other words, for a specific common goal, multiple devices must perform individual actions simultaneously. By taking advantage of the smart factory, which can collect process data in real time, if reinforcement learning is used instead of general machine learning, behavior control can be performed without the required training data. However, in the real world, it is impossible to learn more than tens of millions of iterations due to physical wear and time. Thus, this paper uses simulators to develop grid sortation systems focusing on transport facilities, one of the complex environments in smart factory field, and design cooperative multi-agent-based reinforcement learning to demonstrate efficient behavior control.

Auto Thresholding for Efficient Neurofeedback Trainning (효과적인 뉴로피드백 훈련을 위한 임계값 설정 기법)

  • Shin, Min-Chul;Hwang, Hae-Do;Yoon, Seung-Hyun;Lee, Jieun
    • Journal of the Korea Computer Graphics Society
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    • v.25 no.2
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    • pp.19-29
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    • 2019
  • We develop a complete system that includes data collection, signal processing, and real-time interaction for effective neurofeedback training. Our system supports a sophisticated technique to find threshold values which are quite important for effective neurofeedback system. A therapist specifies a target success rate of positive feedback, allowable error and time. The system computes a current success rate and compare it with the target one. If the difference between two rates exceeds the allowable error for allowable time, we find an optimum threshold value to obtain the target success rate by using numerical optimization technique. We conduct several experiments by varying input parameters: target success rate, allowable error and time, and demonstrate the effectiveness of our technique by showing the desired target success rate is stably obtained and systematically controlled by input parameters.

Development of a Synthetic Multi-Agent System;The KMITL Cadence 2003 Robotic Soccer Simulation Team, Intelligent and AI Based Control

  • Chitipalungsri, Thunyawat;Jirawatsiwaporn, Chawit;Tangchupong, Thanapon;Kittitornkun, Surin
    • 제어로봇시스템학회:학술대회논문집
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    • 2004.08a
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    • pp.879-884
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    • 2004
  • This paper describes the development of a synthetic multi-agent called KMITL Cadence 2003. KMITL Cadence 2003 is a robotic soccer simulation team consisting of eleven autonomous software agents. Each agent operates in a physical soccer simulation model called Robocup Soccer Server which provides fully distributed and real-time multi-agent system environment. All teammates have to cooperate to achieve the common goal of winning the game. The simulation models many aspects of the football field such as noise in ball movements, noisy sensors, unreliable communication channel between teammates and actuators, limited physical abilities and restricted communication. This paper addresses the algorithm to develop the soccer agents to perform basic actions which are scoring, passing ball and blocking the opponents effectively. The result of this development is satisfactory because the successful scoring attempts is increased from 11.1% to 33.3%, successful passing ball attempts is increased from 22.08% to 63.64%, and also, successful intercepting attempts is increased from 88% to 97.73%.

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Viewing Angle-Improved 3D Integral Imaging Display with Eye Tracking Sensor

  • Hong, Seokmin;Shin, Donghak;Lee, Joon-Jae;Lee, Byung-Gook
    • Journal of information and communication convergence engineering
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    • v.12 no.4
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    • pp.208-214
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    • 2014
  • In this paper, in order to solve the problems of a narrow viewing angle and the flip effect in a three-dimensional (3D) integral imaging display, we propose an improved system by using an eye tracking method based on the Kinect sensor. In the proposed method, we introduce two types of calibration processes. First process is to perform the calibration between two cameras within Kinect sensor to collect specific 3D information. Second process is to use a space calibration for the coordinate conversion between the Kinect sensor and the coordinate system of the display panel. Our calibration processes can provide the improved performance of estimation for 3D position of the observer's eyes and generate elemental images in real-time speed based on the estimated position. To show the usefulness of the proposed method, we implement an integral imaging display system using the eye tracking process based on our calibration processes and carry out the preliminary experiments by measuring the viewing angle and flipping effect for the reconstructed 3D images. The experimental results reveal that the proposed method extended the viewing angles and removed the flipping images compared with the conventional system.

Educational Characteristics of Children's Virtual Worlds (어린이용 가상세계의 교육적 특성)

  • Lyou, Chul-Gyun;An, Bo-Ra
    • The Journal of the Korea Contents Association
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    • v.9 no.1
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    • pp.177-186
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    • 2009
  • Virtual world is persistent 3D(2D) space through computers which supports real-time interaction. Children's virtual worlds are for children below 15. Its educational benefits are: practical experience, cooperation possibility, experience sharing, and optimized environment. Moreover, interesting factors from games can enhance the educational efficiency of virtual worlds. In order to intensify the educational efficiency, goal, motivation, relationship and advice has to be considered as well. Based upon those factors, the result of analysis of current virtual worlds shows that they have clear goal. contextualization of task and appropriate reinforcement. However, for future prosperity, continuous effort for expansion of readiness, social persuasion, scaffolding are needed.

Interactive Face Warping Software for Smartphone (스마트폰용 대화식 얼굴 변형 소프트웨어)

  • Kim, Nam-Yun
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.11 no.5
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    • pp.65-71
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    • 2011
  • Face warping techniques have been used for correcting image distortion as well as for creative purposes(e.g., morphing). Smartphone can capture an image from camera and transfer it through network. Thus, warping software which is implemented on the smartphone may be widely used in the fields of game and plastic surgery. This paper describes the design of face warping software using transformation with multiple pairs of lines and bilinear interpolation, and then shows the implementation results on the smartphone. Through many people review, this software showed real-time responsiveness and good transformation quality.

IT innovation and the Korean Culture Wave(Hanrhyu) (IT 혁신과 한류열풍)

  • Kim Yoon-ho;Song Hag-hyun;Yoon Byong-min
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.9 no.4
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    • pp.698-702
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    • 2005
  • As a rapidly progressing of globalization and real time Prcessing in market, Korea's IT is developing, which is aimming at world market. In addition, propagation of cultivation is forming natually by lead to CT in the Asia. Latest in '90's hallyu(korean culture wave) was generated from in the east-north China province and moved to the east south Asia. It is also spreading form TV drama, music to movie, game, food, fashion and so on. This paper analyzed the outcome related with hallyu and IT innovation in knowledge-based economic society. It also addressed some effective strategies for advancing world market incorporating hallyu waves into IT.

A Study on the Status of 3Dimension Character Animation Industry (3차원 캐릭터 애니메이션 산업현황에 관한 연구)

  • 백승만
    • Archives of design research
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    • v.14 no.2
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    • pp.87-94
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    • 2001
  • 3D character animation grow rapidly with the development of computer graphic technology and software. Nowadays 3D character animation holds a important position in the various industry fields including movie, advertisement, animation, and game. With the rapid growth of computer graphic, real time animation of complex characters as well as high quality rendering, which was impossible before, are now prevailing. What is remarkable in this growth is the appearance of virtual idol. The virtual idol plays a leading role in 3D character animation and has a synergy effect in the field of fancy and theme park industry. The aim of this inquiry is to examine the status of computer graphic skill and media related to the 3D character animation to search out the problems in the fields and to propose the solution of the problems

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Development of Contents for Improve the Concentration based on Neurofeedback (뉴로피드백 기반의 집중력 향상 콘텐츠 개발)

  • Park, Tae-Woo;Park, Jun-Mo;Jeong, Do-Un
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2016.05a
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    • pp.284-285
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    • 2016
  • In this paper, reflecting the index of concentration and real-time EEG measurement, implementation of the game-type content that can be centralized power of training. Implemented content, for more effective training, based on the brain wave difference in each user, by reflecting an indication of concentration, it is possible by level training. In order to evaluate the usefulness of the implemented content, to target the five subjects, is underway to improve training of concentration, through a comparative analysis of the changes in the index of ability to concentrate, to confirm the improvement of the concentration of the user it could be.

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