A Complete Wood Grain Modeling Application Incorporating Multiple Cut Types, Species, and a Tree Ring Database Ryan Retting Department of Computer Science Cal Poly, San Luis Obispo

Introduction to Wood Grain Modeling Uses  Computer graphics and animation  Cabinetry  Design, building, and construction applications Methods  Artificially generated texture maps (Photoshop)  Scanned Images  Simulation models

Problems with tessellation

Other Cal Poly theses 1997: Wood Grain Modeling. By Scott Senkeresty 1999: Tree Parameterization for Wood Grain Modeling. By Mike Matsui. 1999: The wood object modeling tool. By Michelle Courier. 2003: Wood Grain Modeling using Implicit Surfaces By Rob Pyle

Major Goals User friendly GUI application Species specification Wood-cut specification Tree Ring database integration

User Friendly GUI Application

Species Selection

Species Specification Characteristics  Colorization  Noise  Branching (which creates knots)

Cut Type Selection

Plain Slicing Images from

Quarter Slicing Images from

Lengthwise Slicing Images from

Rotary Cut Images from

Example Uses 3 – 10’ 2x12 2 – 12’ 2x4 7 – 10’ 4x4

Tree Ring Source Constant tree ring width Use a database

Database Selection

Cut Selection

3D Viewers 3D Trunk and Branch Viewer 3D Board Viewer

3D Trunk and Branch Viewer

3D Board Viewer

Results

Species Comparison Pine Oak Maple

Species Comparison Walnut Cherry Zebrawood

Cut Types Plain Quarter

Cut Types Lengthwise

Cut Types Rotary

Tree Ring Database

Tree Ring Database Four year drought illustration