CS7490 Advanced Image Synthesis

Sungbae Kim's Final Project

Suggestive Contours using Geometry Shader

based on

Suggestive Contours for Conveying Shape

SIGGRAPH 2003

Project description

There are several line drawing algorithm for conveying shape such as contours, crease and crest. Contours also called silhouette is lack of information. Crease is only well for polyhedral objects. Crest also called ridges and valleys is lack of view-dependent nature that hand-drawn pictures possess. Rusinkiewicz, SIGGRAPH 2005 Course note Suggestive contours suggested in [DeCarlo et al. 2003] has much information for shape cue and view-dependent nature. I implemented suggestive contours based [DeCarlo et al. 2003]. To enhance rendering speed, I use the brand-new geometry shader. For details, see my project presentation file.

Source code

To compile and execute this, - Just in Windows - You need kind of recent graphics card for geometry shader, or you need NVIDIA's emulator(very slow). - Some files from NVIDIA's SDK(also included in the below zip file) - TriMesh library for loading meshes.(also included in the below zip file) - Over Cg 2.0 beta library - OpenGL - To execute, type bin/gssc.exe [model file name] Download source code.

Result
	Environment : CPU : Intel Core2 Duo 2.0GHz, RAM : 2GB, VIDEO Card : NVIDIA Quadro FX 570M
		vertices : 48484 triangles : 96964 51 fps
		vertices : 72027 triangles : 144046 34 fps
		vertices : 262909 triangles : 525814 10 fps
		vertices : 237018 triangles : 474048 3.5 fps
		vertices : 437645 triangles : 871414 6 fps
		vertices : 543652 triangles : 1087116 4 fps

Reference
	Doug DeCarlo, Adam Finkelstein, Szymon Rusinkiewicz, Anthony Santella, "Suggestive Contours for Conveying Shape," SIGGRAPH 2003
	Szymon Rusinkiewicz, Doug DeCarlo, Rutgers University, Adam Finkelstein, "SIGGRAPH 2005 Course 7: Line Drawings from 3D Models"