Aerial Orthophotographs of Laurentides Region at 20cm Resolution

20 cm spatial resolution orthophotographs cover the Laurentides region of Québec, produced in spring 2022 and 2023. The mosaics are available in JPEG 2000 and GeoTIFF formats, divided by regional county municipality or 2 km x 2 km tiles. Data is provided under a Creative Commons 4.0 license by Québec government and municipal partners.

Use Cases

• Train semantic segmentation models on high-resolution natural color imagery for land cover classification
• Conduct change detection analysis by comparing orthophotographs from the 2022 and 2023 acquisition periods
• Georeference other spatial datasets using the precise geographic positioning corrected for relief effects
• Extract features for urban planning or environmental monitoring across the six covered regional county municipalities (MRCs)

Strengths

• High 20 cm spatial resolution provides fine detail for analysis
• Covers six specific regional county municipalities (MRCs) in Québec
• Data from two consecutive years (2022 and 2023) enables temporal comparison
• Available in two standard geospatial formats (JPEG 2000 and GeoTIFF) with different tiling schemes

Limitations

• Sample size and total area coverage in square kilometers are unknown
• Limited to spring acquisitions, missing seasonal variation within each year
• Reliance on automated translation for metadata may introduce description errors

Provenance

Source

Government and Municipalities of Québec

Collection Method

Assembly of orthophotographs from regional partnerships, geographically positioned with relief correction

Time Range

Spring 2022 and 2023

Freshness

Last updated March 2026, with source imagery from 2022-2023.

Geography

Laurentides region of Québec, covering the MRCs of Antoine-Labelle, Argenteuil, Laurentians, Pays d'en Haut, and Rivière du Nord