A Complete Wood Grain A Complete Wood Grain Modeling Application Modeling Application Incorporating Multiple Cut Types, Incorporating Multiple Cut Types, Species, Species, and a Tree Ring Databaseand 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 SurfacesBy 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

CharacteristicsColorizationNoiseBranching (which creates knots)

Cut Type Selection

Plain Slicing

Images from http://www.oakwoodveneer.com/tips/cuts.html

Quarter Slicing

Images from http://www.oakwoodveneer.com/tips/cuts.html

Lengthwise Slicing

Images from http://www.oakwoodveneer.com/tips/cuts.htmlImages from http://www.oakwoodveneer.com/tips/cuts.html

Rotary Cut

Images from http://www.oakwoodveneer.com/tips/cuts.html

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 TypesPlain Quarter

Cut TypesLengthwise

Cut TypesRotary

Tree Ring Database

Pine from the Sequoia National Park (Core ASP04B)

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

Year

Rin

g W

idth

(M

M)

Tree Ring DatabaseFour year drought illustration