22c:296 Seminar on Computer Science
First presentation
22c:296 Research Topics in HCI
Final presentation
Presentation 1: Paper
Presentation 2: Paper
22c:196 Security in Distributed Systems
Presentation Final project
Presentation
22c:251 Advanced Computer Graphics
Final Project week 2
Implement a faster BVH structure (about 15% faster)
Final Project week 1
Implement a faster triangle intersection routine discussed by Ingo WaldAfter implementing (~7% more):
Before implementing:
Homework4
Instance Object
To deal with scaling objects, we can use two ways:
1) Scale the object while loading (by 450 for example), and apply the matrix with small scaling values for an instance object.
2) Load the original object without scaling, then apply the matrix with big scaling value
With each way, you have to play with EPSILON value to have a good result. These are what I did:
1) Scale the object while loading, EPSILON = 4e-4
2) Don't scale the object while loading, EPSILON = 1e-10 (quite similar results for 1e-9 or 1e-11)
So I think you should scale the object while loading, and you can easily find the appropriate value for EPSILON to have a good result.
Some more interesting pictures:
Homework3
Problem 1: RayPacket tracer Multi-thread
(I'm sorry that I'm still unable to start Xwindow/Cygwin in my computer)
(So I use my computer with a dual-core CPU to have these pictures)
(I have 1.6 frame per second without optimizing my code, it's interesting)
Ray traceing with one thread
Ray tracing with 2 threads(in fact I used 4 threads instead of 2 threads to get 100% CPU)
Problem 2: Path tracing
Conell Box with 1 sample, shoot one ray (spf = second per frame)
Conell Box with 1 sample, shoot two rays
Conell Box with 128 samples, shoot one ray
Conell Box with 128 samples, shoot two rays
Interesting scene: a teapot and a dragon in a mirrow room.
The floor and back wall are white mirrows, the left wall is a red mirrow and the right wall is a green mirrow.
The scene file is here
Homework2
Problem 1: RayPacket tracer
Single ray in debug mode. Profile here
RayPacket in debug mode. Profile here
Problem 2: Path tracing
It works well with Conell Box but it looks ugly with buddha scene.
Conell Box with 1 sample, single ray mode
Conell Box with 16 samples, single ray mode
Conell Box with 64 samples, single ray mode
Conell Box with 1 sample, packet ray mode
Conell Box with 16 samples, packet ray mode
Conell Box with 64 samples, packet ray mode
Update March 16 2007
Buddha scene with 1 sample
Buddah scene with 128 samples
Homework1
Problem 1: Building BVHTree
It takes me about ten minutes to build the BVHTree, but after that the speed is quite good (more than 1 frame per second).
Problem 2: Thin-lens camera
R = 0.5, S = 10, 256 samples
R = 0.1, S = 10, 256 samples
22c:169 Computer Security
Project Presentation
22C:151 Computer Graphics
Homework11
Problem 1&2:
Extra Credit
Homework10
Problem 1-4:
Problem 5: Load object file (more than 1 hour for one picture)
Extra Credit: Path Tracer. Shoot 256 rays (about 5 minutes for one picture)
A red sphere and a blue infinite plane. Back ground color is White, no light
A red sphere and a yellow infinite plane. Back ground color is White, no light
Homework9
Problem 1:
Extra Credit: texture the spheres and the planes
The spheres are textured with Red-Yellow check, the planes are textured with Red-White check
Homework8
Problem 1:
Homework7
Problem 1:
Extra Credit A: texture the complex objects
Extra Credit B: texture and illuminate the complex objects
Homework6
Problem 1:
Homework5
Problem 1
Homework3
Problem 1
Problem 2
Extra Credit: execute the program to see, do not have any picture
Homework2
Problem 1
a)
b)
Problem 2
Extra Credit
Homework1
Problem 2
Problem 3
