1. DOVE Shuen-Huei Guan, Sheng-Yao Cho, Yu-Te Shen, Ping-Chun Kuo Final Project of Virtual Reality Computer Science and Information Engineering National Taiwan University June, 2003

2. Dove?! Dove is. Dove is Our Virtual Experience. Dove is Dove Simulation.

3. Introduction A simulation of pigeons on the square. Flying in the sky. Looking for food. Feed interactively by a tracker. Display by Vision Station.

4. How to make Dove Understand more about pigeons. Analyze behaviors of pigeons. Find the model to do simulation. Do programming.

5. DV clip

6. Pigeons Behaviors

7. Grouping behavior To leader 當跟屁蟲 Lovable dove idle Slowly wandering cleaning Feather-cleaning Eating Know where food is Approach to food Don’t know where food is Approach to people/doves

8. Pigeons Behaviors cont. Approach In air On the ground I am in the air I am on the ground Fly + land near middle far hungryNot hungry Fast approachSlow approach hungry Not hungry Fast approach Takeoff + fly + land flyTakeoff + fly Takeoff + fly + land I am in the air I am on the ground

9. Related Works Animating bird flight using aerodynamics. Realistic Modeling of Bird Animations. Stanley and Stella in: Breaking the Ice.

10. Flocking Flocking simulates movements of autonomous characters. Character { mass[scalar] position[vector] orientation[N basis vectors] velocity[vector] max speed[scalar] max force[scalar] }

11. Flocking cont. The behavior of an autonomous character can be better understood by dividing it into several layers. Action Selection: strategy, goals, planning Steering: path determination Locomotion: animation, articulation

12. Flocking of Pigeons Action Selection (strategy, goal, planning) (behavior/desire : 1.root for food 2.wander 3.defense or offense) Steering (path determination) (individual dove’s movement : following, avoiding…) Locomotion (animation, articulation) (animation : walking, flying…)

13. Demo Program: Boids Separation Alignment Cohesion

14. What has done Reference: flocking, pigeon’s animation. Movie: DV in Chiang Kai-Shek Memorial Hall. Discovery & National Geometry in NTU Lib. Pigeon 3D model & animation. Pigeons’ behaviors. Demo program.

15. What has not done Animation set for pigeons. Vision station & tracker. We need cute children involved. Sound & graphical effects.

16. Members Shuen-Huei Guan （官順暉） Sheng-Yao Cho （卓聖堯） Yu-Te Shen （沈育德） Ping-Chun Kuo （郭秉鈞） Special Thanks Wei-Chih Liao （廖偉智）

17. Reference Jia-Chi Wu and Zoran Popvic, Realistic Modeling of Bird Animations, SIGGRAPH 2003. Balajee Ramakrishnananda and Kok Cheong Wong, Animating bird flight using aerodynamics, The Visual Computer, 1999. Celine Loscos, Franco Tecchia, and Yiorgos Chrysanthou, Real-Time Shadows for Animated Crowds in Virtual Cities, ACM Symposium on Virtual Reality Software & Technology, 2001. Craig Reynolds, http://www.red3d.com.