Orthophoto High Compression 0.25m resolution Mosaic - 2012 - Calvert Island - British Columbia - Canada

This lightweight mosaic of 2012 orthophotos covering the entire Calvert Island at 0.25m resolution was created from 589 individual orthophotos covering the entire extent of Calvert Island.

JPEG200 compression has been utilized to create this mosaic dataset. This mosaic was created with the intent to provide Hakai researchers, staff and collaborators with a "lightweight" single imagery file which provides coverage for the entire Calvert Island at very high resolution. By employing the JPEG2000 compression, the mosaic has been reduced to >1/4 of the total size that would be obtained by mosaicking all the individual orthophotos in their native TIFF format. While it is expected that such a high compression mechanism would have an impact on the quality of the imagery, the end result in this mosaic is hardly distinguishable visibly from the original air photos.

The air photos / orthophotos were acquired by Hakai through Terra Remote Sensing - CEDD Lab UVic - Hyperspectral Lab UVic.

These orthophotos have the highest available spatial resolution that covers the entire Calvert / Hecate area. Major efforts were used to process individual orthophotos to have a seamless look by the CEDD Lab UVic.

Access and Use

Licence: Creative Commons Attribution 4.0
Limitations: Appropriate credit must be given to Hakai Institute and the authors of the dataset.

Data and Resources

Citation

Keywords

Dataset extent

Map data © OpenStreetMap contributors

Metadata Reference Date(s) January 21, 2022 (Publication)
January 21, 2022 (Revision)
Dataset Reference Date(s) August 13, 2012 (Creation)
September 22, 2015 (Publication)
Frequency of Update As Needed

Responsible Party 1
Name
Hakai Geospatial Technology Team
Affiliation
Hakai Institute
Email
data@hakai.org
Role
  • Custodian
  • Owner
  • Point of Contact
  • Principal Investigator
Responsible Party 2
Name
Santiago Gonzalez Arriola
Affiliation
Hakai Institute
Role
  • Point of Contact
  • Processor
Responsible Party 3
Affiliation
Hakai Institute
Email
data@hakai.org
Role
  • Distributor
  • Resource Provider

Field Value
Ocean Variables Other
Scope Dataset
Status On Going
Topic Category oceans
Maintenance Note Generated from https://cioos-siooc.github.io/metadata-entry-form
Spatial Extent { "coordinates": [ [ [ -128.16651, 51.402002 ], [ -127.854745, 51.402002 ], [ -127.854745, 51.74304 ], [ -128.16651, 51.74304 ], [ -128.16651, 51.402002 ] ] ], "type": "Polygon" }
North Bounding Latitude 51.74304
South Bounding Latitude 51.402002
East Bounding Longitude -127.854745
West Bounding Longitude -128.16651
Temporal Extent
Begin
2012-08-13
Vertical Extent
Min
0.0
Max
1014.0
Default Locale English