City of Toronto Digital Orthophotos 1999
Metadata document received by email
Date: Wed, 02 Apr 2003 09:29:07 -0500
Subject: Re: Toronto orthophotos
Title: Orthophotography 1999
Acronym: ORTHO
Abstract: Colour digital images (aerial photography) of the City of Toronto at 1:20000.
Purpose: Provides photographic coverage of the city to aid in planning and visualization.
Organization: LIT
Time Period of Content
Start Date 1999
End Date 1999
Co-ordinates
West -79.64
East -79.11
North 43.85
South 43.58
Constraints
Access: Public must contact Triathlon Mapping Services for access. City is not permitted to re-sell or re-distribute this data set.
Use Source must be credited. Cannot be re-sold.
Mosaic of : 165 images in TIFF format they are approximately 79 MB each, totaling 13 GB The pixel size is 0.5m. They can be viewed with many commercial image viewers. Associated world files are also available.
Data Source Information Top
Data Source
Type 1:20000 Aerial Photography.
Contribution Aerial photographs of the city, were taken at a scale of 1:20000. Diapositives are produced from the film. These are then scanned, rectified, mosaicked and tiled.
Currentness 1999
Data Source Other
Organization The aerial photography was contracted out to the private sector.
Title 1999 Aerial Photography
Acronym
Description: Aerial photography flown at an approximate scale of 1:20000 covering the entire City of Toronto with overlap into surrounding areas. Diapositives are created from the film. These are then scanned, rectified, mosaicked and geo-referenced to produce digital images that cover the entire City of Toronto with some overlap into surrounding areas.
Geospatial Information Top
Grid System 3 Degree Transverse Mercator
Map Projection Transverse Mercator
Horizontal Datum NAD27
Vertical Datum 1929 Geodetic Survey of Canada
Horizontal Accuracy Approximately 1.0 m
Vertical Accuracy NA
Land Information Toronto
703 Don Mills Rd
City of Toronto
M3C 3N3
Tel: (416) 392-2516
Fax: (416) 397-7556