Orthophotographs of Lanaudière Region at 20 cm Resolution

Spring 2023 and 2024 aerial imagery mosaics covering the Joliette, Montcalm, Matawinie, and D'Autray regional county municipalities. The data includes GeoTIFF files in 2 km x 2 km tiles and JPEG 2000 files organized by municipality, with a spatial resolution of 20 cm in natural color.

Use Cases

• Train land cover classification models using 20 cm resolution natural color imagery for the Lanaudière region.
• Conduct change detection analysis between the 2023 and 2024 spring orthophotograph mosaics.
• Perform geographic feature extraction and mapping using the GeoTIFF files with 2 km x 2 km tile segmentation.
• Analyze regional land use patterns by municipality using the JPEG 2000 files organized by MRC (regional county municipality).

Strengths

• High 20 cm spatial resolution provides detailed ground observation.
• Covers four specific regional county municipalities (MRCs) in Québec.
• Includes data from two consecutive years (2023 and 2024) for temporal comparison.
• Offered under a Creative Commons 4.0 license for free download and use.

Limitations

• Limited temporal coverage to only two spring seasons, missing other times of year.
• Geographic coverage excludes the city of Lavaltrie within the D'Autray MRC.
• Dataset size and specific file dimensions are unknown, complicating storage planning.

Provenance

Source

Government and Municipalities of Québec

Collection Method

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

Time Range

Spring 2023 to Spring 2024

Freshness

Data was last updated on the platform in March 2026, with source imagery from 2023-2024.

Geography

Lanaudière Region, Québec, covering the MRCs of Joliette, Montcalm, Matawinie, and D'Autray (excluding Lavaltrie).