Hello, My name is Changyong Song. Chayo is my nickname! I’m a person with a dream of experiencing people's various virtual worlds.
Education :
Vanderbilt Univ. (2023. 8. 23. ~ )
Ph.D. Student,
Computer Science, GPA(3.98/4.0) Korea Univ. (2021. 3. ~ 2023. 2)
Master of Science,
Computer Science, GPA(4.5/4.5) Kwangwoon Univ. (2015. 3. ~ 2021. 2)
Bachelor’s degree,
Computer Science, GPA(3.69/4.5)•
Grade Scholarship: 6, 7th semester
Intro :
I’m Interested in Computer Graphics, Especially Physically-based Animation, Rendering, Computational Physics, and ML(Differential Simulation, GenAI). Currently, I’m focusing on bridging the Deformation of Objects and ML such as Differential Simulation or Diffusion.Research & Development Projects
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Wax based Lava Animation(2024. 10 ~ Current)
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Describe Lava’s localization with wax.
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Use numeric animation for real data in Gen AI
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Morphing Animation (2023. 8. ~ 2024. 9.)
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Michael Xu*, Chang-Yong Song*, David Levin, and David Hyde, “A Differentiable Material Point Method Framework for Shape Morphing”
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SCA Teaser Video:
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D to Dragon
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Sphere to Bunny
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Bob to Spot (Duck to Cow)
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ML Projects (2023.8. ~ Current)
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Sequence-based Facial Emotion Recognition (2024.1 - 2024.4)
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Paper (In preparation)
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Diffusion Model
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GAN
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Regression
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Express Particle’s angular momentum (2021. 10. ~ 2022. 11.)
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MPM-Based Angular Animation of Particles using Polar Decomposition Theory, Journal of the Korea Computer Graphics Society, 2022. 9. , Chang-Yong Song, Ki-hoon Kim, Sun-Jeong Kim, Chang-hun Kim
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Abstract :
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In this paper, we propose a novel approach to simultaneously express the angular and linear motion of the particle itself. During the integration process of the presented MPM (Material Point Method), a deformation gradient tensor is decomposed by polar decomposition theory to extract the rotation tensor. By applying this together with the linear motion of each particle, we can possibly depict each particle’s spin.
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Primitive Rectangle (vs MPM)
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Snowflakes (Neo-Hookean)
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Mater’s Thesis (Dissertation Defense: 11/17)
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Development of GLTF to OpenGL ES 3.2 Engine (2022. 09 ~ 2023. 04)
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Focusing on Shaders
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Development of rendering process (2021. 04 ~ 2021. 06)
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Texture Volume Rendering with GLSL
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Express elastic object’s deformation (2019. 10. ~ 2020. 10)
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Display Elastic Object’s Deformation with Spring-Mass System
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Curves
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Implement B/Natural Spline Curve
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Displaying graphical Pipeline (2019. 10 ~ 2019. 12)
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Display Object’s movement, illumination
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Use OpenGL, GLM(OpenGL mathematics), Eigen/Dense(Matrix Calculation)
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Design Graphical elements and motion for the mobile game (2019. 09 ~ 2020. 05)
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Development of the character’s motion and design of Particle Effects
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Use Unity 3D
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Design Graphical elements and motion for VR game (2019. 09 ~ 2019. 12)
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Design Monster’s Pattern & Map design
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Use Unreal Engine 4
Table
At a glance
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Table
At a glance
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Seminars (Korean)
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Position-Based Dynamics (21. 2)
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Stormscapes: simulating cloud dynamics in the now (22. 5)
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Simulating Fracture with Material Points (22.9)
