Open Data Catalogue



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Orthophoto 2012 Tiles - IR 10-30cm

The 2012 aerial photography consists of 1164 frames in 35 flight lines of 10cm digital imagery and 189 photos in 9 flight lines of 30cm digital imagery. All photography was acquired using a Vexcel UltraCAM X on May 13, 14 and 20 (30cm) 2012. Aerotriangulation mensuration was performed in automatic mode with supplementary manual measurements made for control and additional tie points (Dudley Thompson Mapping Corporation).

Results - Final Sigmas
Mean Predicted Standard Errors (10 cm Photography)
(including Control Points) (excluding Control Points)
0.048 Sx 0.053
0.067 Sy 0.073
0.235 Sz 0.257
0.249 Spherical 0.273

Mean Predicted Standard Errors (30 cm Photography)
(including Control Points) (excluding Control Points)
0.675 Sx 0.754
0.605 Sy 0.675
1.384 Sz 1.565
1.251 Spherical 1.451

Click to download the entire AT Report.

The aerial photos were orthorectified into 204 images and are provided for download by the City of Chilliwack as Enhanced Compression Wavelet (ECW) files. The files range in size from approximately 1MB to 50MB and can be downloaded by clicking the appropriate square in the index map PDF.

*To view the ECW or save as another format, download and install the free software ERDAS ER Viewer.

The City takes no responsibility for the limitations of Google Earth, ERDAS ER Viewer or any other third party application.

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