School of Architecture, Planning and Geomatics

University of Cape Town

Laetoli Trackway

Laetoli Trackway

G1

G2/3

9 m

9 m

3 m

1.5 m lateralshift

The Laetoli Hominid Trackway

1995

1996

hipparion

The Recording Process• Precise Engineering Survey

– control points accuracy < 0.2 mm

• analog photogrammetry

• digital photogrammetry

• 3-D modeling

• Spatial Information System

Survey of individualfootprints

Camera Configuration for footprintphotogrammetry

Project Statistics

• Theodolite readings

• Images

– Digital DCS

– Analog UMK

– Analog Hasselblad

• Files generated

• Final Data stored

> 5000

: 1220

: 650

: 160

: 410

> 15 000

> 4 GBytes

Photogrammetric Results

Control

Points

Individual

Imprint points

trackway

Number Accuracy

96 + 80 0.1- 0.2 mm XYZ

10 000 - 0.2 - 0.4 mm

20 000 per print

< 0.5 mm

Hard copyand Artefacts

Digital Data

Reference SystemDigit. Documents

Ref. Syst.Dig. Docs

Ref. Syst.Dig. Docs

Paper Documents

Micro Fiche

Scientists Report

Digital Maps& Images

Physical Items

Maps &Photographs

Ref. Syst.

Hardcopy - Artifacts - Digital Data

Software

Components

Archiving

Dig. Ref. System

Data Bases

Spatial & AttributeData for GIS

GIS

Dig Maps &

ImagesImage Processing System

Visualisation/ Animation

Virtual Reality

Laetoli

Home Page

OPEN

GIS

LAETOLI- H I S

An ortho photograph of thefootprint is draped over the 3D

surface model which wasgenerated using photogrammetric

methods.

A colour coded 3Drepresentation (differentcolours show different

heights

Information Screen: Footprint Conservation

Description of footprint condition andinterventions (Word® document)

Footprintconditiongraphic(displayed inArcView®)

ArcView®custom menu

Click to view footprintplans in ArcView®