Instructor

Jehee Lee

Building 302, Room 325, Phone 1845

Class hours

Monday and Wednesday 4:00-5:15pm

Classroom

Building 302, Room 106

Teaching

Assistant

Jong Pil Park

jppark (at) mrl (dot) snu (dot) ac (dot) kr

Building 302, Room 312-1, Phone 1864

Pre-Requisites

Undergraduate computer graphics

Programming skills for C or C++

Programming skills for OpenGL or DirectX are required.

Grading policy

Homework and class participation : 20%

Term project: 50%

Exams: 30%

Textbook

The following textbooks are recommended, but not required.

Andrew Rollings and Dave Morris, Game Architecture and Design, New Riders

Andrew Rollings and Ernest Adams on Game Design, New Riders

Chris Crawford on Game Design, New Riders

Schedule

Week 1

9 / 1

No Class

9 / 3

외부 강연

제목: Interactive Ray Tracing and Sound Rendering in Complex, Dynamic Environments

연사: Dinesh Manocha

일시: 2008년 9월 3일 (수요일) 오후 4시

장소: 302동 308호

Abstract :

In recent years, there has been a renewed interest in real-time ray tracing for interactive applications. This is due to increased processing speeds as predicted by Moore's Law, parallelization on multi-core and multi-processing systems and development of ray-coherence techniques. We give an overview of our recent work on ray tracing complex and dynamic environments. These include new model simplification, hierarchical representations and data layout algorithms that can accelerate the performance on massive models by more than an order of magnitude. We also describe novel approaches for interactive sound rendering in complex environments. Our approach is based on ray-frustum tracing that combines the accuracy of volumetric methods with the efficiency of ray tracing. We highlight its application in large, dynamic scenes. To the best of our knowledge, these are the first interactive algorithms for sound propagation in complex scenes running on a desktop machine. (Joint work with members of GAMMA group at UNC Chapel Hill)

Week 2

9 / 8

9 / 10

Design Principles: Play [ppt]

• Crawford, Chap 1-3

Week 3

9 / 15

9 / 17

Student Project Brainstorming

Week 4

9 / 22

Design Principles: Challenge [ppt]

• Crawford, Chap 4

9 / 24

Design Principles: Conflict and Interactivity [ppt]

• Crawford, Chap 5

Week 5

9 /29

Student Project Brainstorming

10 / 1

Design Principles: Interactivity and creativity

• Crawford, Chap 6

• Facade: A one-act interactive drama

Week 6

10 / 6

외부 강연

연사: 강형우 교수 (University of Missouri, St. Louis)

일시: 2008년 10월 6일 (월요일) 오후 4시

장소 : 302동 309호

제목: Flow-based Image Abstraction
요약: We present a non-photorealistic rendering technique that automatically delivers a stylized abstraction of a photograph. Our approach is based on shape/color filtering guided by a vector field that describes the flow of salient features in the image. This flow-based filtering significantly improves the abstraction performance in terms of feature enhancement and stylization. Our method is simple, fast, easy to implement, and applicable to real-time video abstraction. In the second part of the talk, we present a PDE-based iterative approach to image abstraction which allows for continuous control of the level-of-abstraction.

Henry Kang is an assistant professor of computer science at the University of Missouri, St. Louis. He received his B.S degree in computer science from Yonsei University, Korea (1994), then his M.S (1996) and Ph.D. (2002) in computer science from Korea Advanced Institute of Science and Technology (KAIST). His research interests include non-photorealistic rendering and animation, illustrative visualization, image and video processing, image-based modeling and rendering, and facial expression animation

10 / 8

Interactive Storytelling [ppt]

• A Man's Love Story: An interactive drama with live action footage [mov]

Week 7

10 / 13

Student Project Proposal

10 / 15

Week 8

10 / 20

10 / 22

Development Process: Documentation [ppt]

• Sample outline for a game design
• Guidelines for game concept documents

Week 9

10 / 27

10 / 29

Week 10

11 / 3

No Class

11 / 5

Week 11

11 / 10

Design Principles: Gameplay

• Rollings and Morris, Chap 3

11 / 12

Design Principles: Gameplay (continued)

• Rollings and Morris, Chap 3

Week 12

11 / 17

Design Principles: Balance

• Rollings and Morris, Chap 5

11 / 19

Week 13

11 / 24

외부 강연

제목 : Biomechanical Modeling and Control of the Human Body for Computer Animation

연사 : 이성희 박사 (University of California)

일시 : 2008년 11월 24일 (월요일) 오후 5시

장소 : 302동 309호

Abstract :

Realistic anatomical modeling capable of high-fidelity synthesis of human body shape and motion is a major challenge in computer animation. Despite significant progress in this domain, the detailed modeling of the human body has not received adequate attention because of its complexity. We develop a comprehensive biomechanical model of the human body, confronting the combined challenge of modeling and controlling more or less all of the relevant articular bones and muscles, as well as simulating the physics-based deformations of the soft tissues. Emulating the relevant anatomy, our skeletal model comprises 75 bones (165 degrees of freedom), including the vertebrae and ribs, and it is actuated by 846 muscles, modeled as piecewise uniaxial Hill-type force actuators. To simulate the biomechanics of the soft tissues, we employ a coupled 3D finite element model with the appropriate constitutive behavior, in which are embedded the detailed anatomical arrangement and geometries of skin, muscle, and bone.

As a precursor to developing our comprehensive biomechanical model, we consider the highly important head-neck-face complex. Our head-neck model is characterized by appropriate kinematic redundancy (7 vertebrae) and muscle actuator redundancy (72 muscles). It presents us with a challenging motor control problem, even for the deceptively simple task of balancing the head in gravity atop the cervical spine. Our biologically inspired, neuromuscular controller provides the numerous muscle actuators with efferent activation signals, controlling the pose of the head through time, as well as the stiffness of the neck by coactivating mutually opposed muscles. Using machine learning techniques, the neural networks within the controller are trained offline to efficiently generate the online control signals necessary to synthesize various autonomous movements for the behavioral animation of the human head and face.

Our biomimetic modeling approach heightens the need to accurately model skeletal joints. Since the elementary joints conventionally used in physics simulation cannot produce the complex movement patterns of biological joints, we also introduce a new joint model, called "spline joints", that can emulate biological joints more accurately. Spline joints can be efficiently simulated using minimal-coordinates-based dynamics algorithms.

Brief Biography :

Sung-Hee Lee is a postdoctoral scholar at University of California, Los Angeles. He earned the Ph.D. degree in Computer Science from the UCLA in 2008, and his dissertation is entitled "Biomechanical modeling and control of the human body for computer animation". He research interests include computer animation and robotics. Specifically he is interested in physics-based modeling and control of human characters, motion planning and control of humanoid robots, and multibody dynamics.

11 / 26

Design Principles: Balance (continued)

• Rollings and Morris, Chap 5

Week 14

12 / 1

12 / 3

Week 15

12 / 8

12 / 10

Final Term Project Presentation

• Sketch Book by 김인송/박민기
• Be Engineers by 유영대
• 팽이게임 by 배종락