Metadata LinkOrthoimagery 2012

        Abstract: 
        Digital orthophoto imagery at a resolution of 12 cm was flown for the Region of Waterloo. The images were capture in spring 2012. The ground conditions were leaf off and snow free.





 General Information 


      Source Year
      2012


      Category
      Ortho


      Feature Type
      Imagery


      Methodology
      First Base Solutions created a digital 12cm resolution colour orthophoto mosaic of every 60% FOL photograph using the adjusted digital images, ground control data and a digital elevation model.

Correcting the distortion found in the original imagery creates the orthophoto. There are three distortions, camera lens distortion, changes in aircraft altitude and changing ground elevation.

Processing of the orthoimagery is done by using a combination of PCI and Intergraph software. Once the adjusted image orientation data is imported, the remaining data required to produce the orthophoto is input. This includes the camera calibration data, control data and the digital elevation model. The number of times the imagery is subject to re-sampling is minimized. The re-sampling algorithms used employs cubic convolution strategies for deriving the output pixel intensity value. Once the individual images have been orthorecified they are imported into the Intergraph OrthoPro mosaicing environment. Intergraph produces remarkable mosaics with virtually invisible seams and remarkably even tone. Initial tiles are clipped from within Intergraph and then mosaiced together using MrSID for QC evaluation. Visual QC checks are done to look for wobbles along road/railways and bridges, even colour tones, poor cutline location and incorrect elevations. Once corrections are complete the final tiles are clipped using PCI and final delivery tiles are processed.

      Geographic Extent
      City of Kitchener


      Spatial Projection
      NAD83 UTM Zone 17N (EPSG: 26917)


 Georeferencing and Accuracy 


      Acquistion Period
      April


      Horizontal Datum
      North American Datum 1983 (EPSG: 6269)


      Vertical Datum
      Not Applicable


      Horizontal Accuracy
      6 cm RMSE


      Vertical Accuracy
      Not Applicable


      Grid Resolution
      12 cm 


      Spectral Bands
      RBG, CIR (4-bands)


      Point Density



      File Format
      Geotiff


 Source and Contraints   


      Use Constraint
      Open Data


      Agency Originator
      Multiple Agencies


      Agency Distributor
      City of Kitchener


      Process Description
      Ortho-photo mosaic from tiles


      Flying Height Above Ground (m)
      1700


      Spatial Area (km2)
      159


      Spatial Resolution (cm)
      12


      Producer
      First Base Solutions Inc.


      System



      Owner
      City of Kitchener


 Contact and Links   


      Open Data
      https://open-kitchenergis.opendata.arcgis.com/documents/189b3deeac5743d2b4f4d1d167698d43/about


      Contact
      Manager Geospatial Data and Analytics, City of Kitchener


 Citation 


      Citation
      Orthoimagery 2012 (April - 12 cm) Spectral Bands RBG, CIR (4-bands), Horizontal Accuracy: 6 cm RMSE (First Base Solutions Inc. for City of Kitchener) NAD83 UTM Zone 17N (EPSG: 26917)



  © 2023 City of Kitchener | 200 King Street West, Kitchener, Ontario | Telephone: 519-741-2345, TTY: 1-866-969-9994

Metadata Link Orthoimagery 2014

        Abstract: 
        Digital orthophoto imagery at a resolution of 12 cm was flown for the Region of Waterloo. The images were capture in spring 2014. The ground conditions were leaf off and snow free.





 General Information 


      Source Year
      2014


      Category
      Ortho


      Feature Type
      Imagery


      Methodology
      First Base Solutions created a digital 12cm resolution colour orthophoto mosaic of every 60% FOL photograph using the adjusted digital images, ground control data and a digital elevation model.

Correcting the distortion found in the original imagery creates the orthophoto. There are three distortions, camera lens distortion, changes in aircraft altitude and changing ground elevation.

Processing of the orthoimagery is done by using a combination of PCI and Intergraph software. Once the adjusted image orientation data is imported, the remaining data required to produce the orthophoto is input. This includes the camera calibration data, control data and the digital elevation model. The number of times the imagery is subject to re-sampling is minimized. The re-sampling algorithms used employs cubic convolution strategies for deriving the output pixel intensity value. Once the individual images have been orthorecified they are imported into the Intergraph OrthoPro mosaicing environment. Intergraph produces remarkable mosaics with virtually invisible seams and remarkably even tone. Initial tiles are clipped from within Intergraph and then mosaiced together using MrSID for QC evaluation. Visual QC checks are done to look for wobbles along road/railways and bridges, even colour tones, poor cutline location and incorrect elevations. Once corrections are complete the final tiles are clipped using PCI and final delivery tiles are processed.

      Geographic Extent
      City of Kitchener


      Spatial Projection
      NAD83 UTM Zone 17N (EPSG: 26917)


 Georeferencing and Accuracy 


      Acquistion Period
      May


      Horizontal Datum
      North American Datum 1983 (EPSG: 6269)


      Vertical Datum
      Not Applicable


      Horizontal Accuracy
      8 cm RMSE


      Vertical Accuracy
      Not Applicable


      Grid Resolution
      12 cm 


      Spectral Bands
      RBG (3-bands)


      Point Density



      File Format
      Geotiff


 Source and Contraints   


      Use Constraint
      Open Data


      Agency Originator
      Multiple Agencies


      Agency Distributor
      City of Kitchener


      Process Description
      Ortho-photo mosaic from tiles


      Flying Height Above Ground (m)
      NA


      Spatial Area (km2)
      222


      Spatial Resolution (cm)
      12


      Producer
      First Base Solutions Inc.


      System



      Owner
      City of Kitchener


 Contact and Links   


      Open Data
      https://open-kitchenergis.opendata.arcgis.com/documents/62b7db80f81742dba0905b90929cc568/about


      Contact
      Manager Geospatial Data and Analytics, City of Kitchener


 Citation 


      Citation
      Orthoimagery 2014 (May - 12 cm) Spectral Bands RBG (3-bands), Horizontal Accuracy: 8 cm RMSE (First Base Solutions Inc. for City of Kitchener) NAD83 UTM Zone 17N (EPSG: 26917)



  © 2023 City of Kitchener | 200 King Street West, Kitchener, Ontario | Telephone: 519-741-2345, TTY: 1-866-969-9994