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Establishment of a national coverage based on Landsat 7 Ortho-rectified imagery
There are a number of federal and provincial databases in existence and they are widely used across Canada. Certain layers of information in these databases, such as roads, hydrography, relief, and administrative boundaries, are considered priorities. One of the major problems with these databases is integrating their contents.Joint efforts by the federal and provincial governments to solve an problem with integration led to the creation of the Data Alignment Layer, part of the Canadian Geospatial Data Infrastructure (CGDI). Even if the Data Alignment Layer provides for integrating data from different organizations by conversion from one environment to another, all are in agreement that a single, common geometry would attenuate integration problems.
An agreement in principle was signed to elicit financial support from the main stakeholders in the field of geomatics (federal, provincial, and territorial levels in Canada) to acquire Landsat 7 images. The images have a resolution of 15 m in the panchromatic band, are available at reasonable cost, and are governed by a flexible policy without stringent rules governing data use and distribution.
Everyone agrees that the ortho-image must be generated with the best control data available. The resultant ortho-image will provide the foundation for integrating all the databases in the country. It will integrate accurate data without having to move them. The ortho-image will make it possible to carry out updates and create derived products as well as lead towards the common geometry sought.
This project deals with the methodology and costs associated with implementing this raster infrastructure. The proposed methodology would make it possible to estimate the accuracy of the resultant ortho-image, to reduce quality-control costs, and to ensure that the control data used is maintained for future rectification.
Primary Partner:
Natural Resources Canada - Centre for Topographic Information--Sherbrooke (CTI-S)
Sherbrooke,
Quebec;
Partners: Parks Canada, Elections Canada, Agriculture and Agri-food Canada, Environment Canada, Fisheries and Oceans Canada, National Defence, Indian and Northern Affairs Canada, Statistics Canada, Canadian Transportation Agency, Natural Resources Canada - Canadian Forest Service, Alberta, British Columbia, Saskatchewan, Manitoba, Ontario, Québec, New Brunswick, Prince Edward Island, Nova Scotia, Newfoundland and Labrador, Yukon Territory, Northwest Territories, Nunavut
Funding From GeoConnections: $923,000.00 ( 44.9 %)
Estimated Inception Date: November, 1999
Estimated Completion Date: March, 2005
Deliverables from this project benefitted the following provinces: All provinces