Digital Geometry Processing
(Spring-Summer 2012)
Graphics&Geometric Computing Laboratory
University of Science and Technology of China
Announcements General Description Course Goals Topics Texts Grading
Syllabus Assignments Requirements on Assignments Professional Conduct Resources
Time | Tuesday (19:00--) |
Venue | Room 1218, Management and Research Building, East Campus |
Instructor | |
Credit | 4 |
Prerequisite | Computer Graphics, CAGD, C/C++ |
Webpage | http://staff.ustc.edu.cn/~lgliu/Courses/DGP_2012_spring-summer/default.htm |
In this course, we will explore advanced techniques for representing and processing geometric object models. The goals of this course are to extend and deepen the student's knowledge and understanding of algorithms and data structures and the associated design and analysis techniques. It examines previously studied algorithms and data structures more rigorously and introduces the student to "new" algorithms and data structures. It focuses the student's attention on the design of program structures that are correct, efficient in both time and space utilization, and defined in terms of appropriate abstractions.
This course provides a
comprehensive introduction to mesh processing, including their
design, analysis, and implementation. Topics include:
·mesh
data structure
·3D
scanner techniques
·surface
reconstruction
·mesh
smoothing
·mesh
simplification
·geometry
compression
·mesh
parameterization
·mesh
segmentation
·deformation
and morphing
·subdivision
surfaces
·shape
analysis
·discrete
differential geometry
References:
W. Sweldens and P. Schroder.
Digital Geometry Processing, SIGGRAPH'2001, course
notes.
Other
researchers' courses
Readings:
Various
journal papers, conference papers, or WWW materials as appropriate.
Credit toward the semester grade will be allocated to each of the components as indicated in the following table.
Programming exercises | 20% |
Projects (2 or 3) | 40% |
Literature survey and report | 40% |
Note: No final examination will be held in the end of this course. Programming projects and literature survey report are both required. More information will be provided in the class.
Note: Please zip your submission stuffs of the assignment into one single file either using WinZip or WinRAR. Name the file name as "ID_Name_Assignment_#1.zip" or "ID_Name_Project _#1.zip" where ID is your unique ID number in the class. For Example, my submission file name might be "01_张三_Assignment_01.zip".
All students are expected to study the relevant portions of the course to see if some open problems can be solved after each class.
All programming for this course will be done in C++ according to the coding styles. We will compile and test programs on MS Visual C++ Version 6.0+ under Windows XP. It is the responsibility of the student to submit a program that will successfully compile and execute on the specified platform.
A document about your programming assignment is also required according to the Computer Program Documentation Standards.
The final literature survey should be written professionally by summarizing a series of related papers about some topic you like, not only several papers.
Assignment Submission
What constitutes Creativity ?
Creativity is any substantial improvement beyond the basic solution - it can be
applied to any part of the project. For example, the following are relevant in
most cases :
User Interaction
̶
It would be nice to present the user
with options to either test the program using internal tests or an
interactive interface
̶
Work around limitations in the
program. For example, if the program asks for lines of input and quits when
it sees "X", invent a special syntax (called an escape sequence) to allow
the user to type in "X" without the program exiting. Hypothetically, if the
user enters $X the program interprets it as X, if the user enters $$ the
program interprets it as $ and if the user enters X the program exits.
Visualization
̶
A representation of how data is
actually being stored in the data structure, by specific position and value
(this would even help greatly with debugging) - this could be accomplished
with specialized data access routines for output formatting
Testing
̶
Simulating real-world conditions for
input by making some assumptions about the distribution of operations
performed and the rate of operations, then simulating using random number
generators
̶
Intensively testing creation, usage
and destruction of the data structure to prove there are no memory leaks
̶
Exhaustive automatic testing - go
through many (or every) possible scenarios for the data structure (up to
some time limit). For example, assign "add" and "remove" to a binary
variable - then generate all possible strings of operations - test the
structure for each case, and test the results automatically in your main
program to make sure they are what was expected.
̶
Develop a syntax for file-based
testing and use this as an option - eg. "enter X" and "retrieve"
Efficiency
̶
Minimize the number of allocations of
memory blocks by reusing deleted blocks
Ask yourself these questions ...
̶
How can I make the interface more
natural ?
̶
How can I make the program run faster
?
̶
How can I use less memory/disk space ?
̶
Have I thoroughly tested my program ?
Will my program survive real-world tests ? Will my program survive
worst-case scenario tests ?
As a
student in our class, you are expected to conduct yourself in a professional
manner.
Limited Collaboration Policy.
Unless otherwise indicated, any homework assignment given in this class will be an individual assignment. The work you submit is to
reflect the knowledge, understanding, and skill that you have attained as an
individual. However, the instructor does want to encourage the development of a
community of scholars who are actively engaged in discussion of the ideas
related to this course. With this in mind, you are allowed to discuss solutions
of the homework and programming problems with other students if done so
according to the following guidelines:
You may discuss ideas for homework and programming assignments with your classmates. However, you cannot collaborate on writing the solution or the program code. That is, you can talk about the problems and ideas for solving them, but you cannot write things down with anyone else. You are, of course, prohibited from copying or seeing another student's written solution, and you are not allowed to show your work to anyone else.
You should accept help with care. If you work too closely with another student, you might mislead yourself into believing that you understand the concepts and techniques better than you actually do. Don't forget that the instructor has office hours and can probably give you hints or suggestions to get you started.
You should give help with care. Do not help anyone too much. When you have solved a problem, it is tempting to just tell other students how you solved it. Instead, try to allow them to come to the solution on their own. Maybe give them a hint to help them get "over a hump." Remember that helping someone too much will hurt them in the long term if they can't work through problems on the exams by themselves. So avoid the temptation to do so. If you can't help other students without giving away the whole solution, direct them to see the instructor (who may or may not have a way to "edge" them toward the solution).
You are not obligated to help anyone. If you feel uncomfortable helping another student for any reason, please direct them to see the instructor.
Computer Program Documentation Standards
Advices on Researches:
Mesh Models:
Mesh library on the internet:
Model formats:
OpenGL programming:
GUI toolkits:
Renders:
Useful coding related sites on the internet:
Send any comments or
suggestions to Prof. Ligang Liu (lgliu@ustc.edu.cn)
Copyright © 2012, Ligang Liu