Smoothed contours were produced at 2 foot intervals from topographic vector data (breaklines) collected by photogrammetrists. Breaklines denote the major terrain shifts as percieved by viewing the aerial photography stereoscopically. Major breaks, such as the top and bottom of hills were marked with the breaklines. Point data (DTM) was used to supplant the breakline data to provide enough information to model the terrain of the area. The data was collected at scale of 1"= 40'.

Survey field crews surveyed 14 photo identifiable points used for photo control. All the ground control points were used in the final analytical triangulation solution. The horizontal positions were reported in feet; NAD1983 (2011) Massachusetts State Plane Coordinate System, Mainland Zone, Epoch 2010.00. Elevations were based on the NorthAmerican Vertical Datum, 1988.

The aerial photographic mission was carried out on April 12, 2017. 459 exposures were taken in 16 flight lines at 3300' AMT resulting in a pixel resolution of 0.22' . The photography was collected with 60% overlap to ensure proper stereo viewing.

The digital photographs were triangulated using KLT software. The interior orientations of each photo were measured, the photos were tied togther within flight lines and lastly each flight line was tied, creating one single unified block. This block was then projected into Massachusetts State Plane NAD 83 coordinates using the14 aerial photo ground control points that were collected by traditional survey. RMS formulas were used to compute error propagation and reduce error.

The breakline and dtm data collected through the stereocompilation process was edited in KLT Atlas software to check for continuity. A TIN was generated from the edited topographic data which was then used to produce smoothed contours at 2' intervals. The contour information was then checked for errors and converted into AutoCAD .dxf format for GIS import.

This two-part video tutorial provides a comprehensive, step-by-step guide to creating and georeferencing a 3D textured model of a historic building using Reality Capture. It covers the entire process, from photo alignment and importing GPS data from a text file to identifying and using ground control points (GCPs) to improve the alignment of model components and accurately georeference the point cloud. The tutorial also demonstrates model creation, cleaning, simplification, and texturing. In the final steps, the model is exported and imported into ArcGIS Pro for geographic analysis and visualization.

The tithe map of the township of Cyfnant in the historic parish of Llanarmon-yn-Iâl, Denbighshire was created in 1844. This is a 2nd class tithe map, meaning that it was created from an amalgam of older sources such as estate maps. The map was georeferenced as part of the AHRC's Deep Mapping Estate Archives project in August 2022 using ESRI ArcPro 2.9.1 utilising multi-point georeferencing (around 250-600) control points as well as the spline transformation. The map as been imported into ArcGIS online as a portable network graphics (PNG) file and is available for public use under the Non-Commercial Open Government Licence.

The tithe map of Rector township in the parish of Llanarmon-yn-Iâl, Denbighshire was created in 1844. This is a 2nd class tithe map, meaning that it was created from an amalgam of older sources such as estate maps. The map was georeferenced as part of the AHRC's Deep Mapping Estate Archives project in July 2022 using ESRI ArcPro 2.9.1 utilising multi-point georeferencing (around 250-600) control points as well as the spline transformation. The map as been imported into ArcGIS online as a portable network graphics (PNG) file and is available for public use under the Non-Commercial Open Government Licence.

This dataset was created to provide vector mapping of planimetric features derived from aerial photography.Photo Acquisition - The aerial photographic mission was carried out on April 12, 2017. 459 exposures were taken in 16 flight lines at 3300' AMT resulting in a pixel resolution of 0.22' . The photography was collected with 60% overlap to ensure proper stereo viewingAerial Triangulation - The digital photographs were triangulated using KLT software. The interior orientations of each photo were measured, the photos were tied togther within flight lines and lastly each flight line was tied, creating one single unified block. This block was then projected into Massachusetts State Plane NAD 83 coordinates using the14 aerial photo ground control points that were collected by traditional survey. RMS formulas were used to compute error propagation and reduce error.Data Capture - Vector data was collected using the subsequent aerial triangulation which allows photogrammetrists to view the photography in stereo. Data was captured using KLT sofware which allows the user to collect in 3D space in the coordinate system established during aerial triangulation. Each data set was collected on its own layer, which allows the data to be imported into the GIS database. The data was collected at scale of 1"= 40'CAD processing - The vector data collected through the stereocompilation process is edited in KLT Atlas software. Data is checked for errors and then converted into AutoCAD .dxf format.GIS geodatabase production- The AutoCAD .dxf file is imported into ESRI ArcGIS 10.5.1 where a topology is run to eliminate any gaps that may exist in the data. The data is then separated into the appropriate layers as defined in the database design. A topology check is then run on the data prior to delivery to check for inconsistencies.

The tithe map of townships of Broncoed and Bryncanillt in the historic parish of Mold, Flintshire was created in 1837. This is a 2nd class tithe map, meaning that it was created from an amalgam of older sources such as estate maps. The map was georeferenced as part of the AHRC's Deep Mapping Estate Archives project in August 2022 using ESRI ArcPro 2.9.1 utilising multi-point georeferencing (around 250-600) control points as well as the spline transformation. The map as been imported into ArcGIS online as a portable network graphics (PNG) file and is available for public use under the Non-Commercial Open Government Licence.

The tithe map of township of Creigiog Is Glan in the historic parish of Llanarmon-yn-Iâl, Denbighshire was created in 1847. This is a 2nd class tithe map, meaning that it was created from an amalgam of older sources such as estate maps. The map was georeferenced as part of the AHRC's Deep Mapping Estate Archives project in August 2022 using ESRI ArcPro 2.9.1 utilising multi-point georeferencing (around 250-600) control points as well as the spline transformation. The map as been imported into ArcGIS online as a portable network graphics (PNG) file and is available for public use under the Non-Commercial Open Government Licence.

The enclosure map of Llanferres, Denbighshire was created in 1801. This map was produced to depict the allotments and infrastructure that where to be created following the act of enclosure. The map was georeferenced as part of the AHRC's Deep Mapping Estate Archives project in March 2022 using ESRI ArcPro 2.9.1 utilising multi-point georeferencing (around 250-600) control points as well as the spline transformation. The map as been imported into ArcGIS online as a portable network graphics (PNG) file and is available for public use under the Non-Commercial Open Government Licence.

The enclosure map of Llanarmon-yn-Iâl, (covering both Flintshire and Denbighshire) was created in 1830. This map was produced to depict the allotments and infrastructure that where to be created following the act of enclosure. The map was georeferenced as part of the AHRC's Deep Mapping Estate Archives project in March 2022 using ESRI ArcPro 2.9.1 utilising multi-point georeferencing (around 250-600) control points as well as the spline transformation. The map as been imported into ArcGIS online as a portable network graphics (PNG) file and is available for public use under the Non-Commercial Open Government Licence.

The tithe map of townships of Gwernaffield, Rhual and Rhual Isaf, in the parish of Mold, Flintshire was created in 1837. This is a 2nd class tithe map, meaning that it was created from an amalgam of older sources such as estate maps. The map was georeferenced as part of the AHRC's Deep Mapping Estate Archives project in August 2022 using ESRI ArcPro 2.9.1 utilising multi-point georeferencing (around 250-600) control points as well as the spline transformation. The map as been imported into ArcGIS online as a portable network graphics (PNG) file and is available for public use under the Non-Commercial Open Government Licence.

The tithe map of Llandegla parish, Denbighshire was created in 1847. This is a 2nd class tithe map, meaning that it was created from an amalgam of older sources such as estate maps. The map was georeferenced as part of the AHRC's Deep Mapping Estate Archives project in February 2022 using ESRI ArcPro 2.9.1 utilising multi-point georeferencing (around 250-600) control points as well as the spline transformation. The map as been imported into ArcGIS online as a portable network graphics (PNG) file and is available for public use under the Non-Commercial Open Government Licence.

The enclosure map of Mold Mountain, Flintshire was created in 1800. This map covers the historic townships of Arddynwent and Nercwys in the parish of Mold, Flintshire. This map was produced to depict the allotments and infrastructure that where to be created following the act of enclosure. The map was georeferenced as part of the AHRC's Deep Mapping Estate Archives project in March 2022 using ESRI ArcPro 2.9.1 utilising multi-point georeferencing (around 250-600) control points as well as the spline transformation. The map as been imported into ArcGIS online as a portable network graphics (PNG) file and is available for public use under the Non-Commercial Open Government Licence.

The tithe map of Treuddyn parish, Flintshire was created in 1839. This is a 2nd class tithe map, meaning that it was created from an amalgam of older sources such as estate maps. The map was georeferenced as part of the AHRC's Deep Mapping Estate Archives project in February 2022 using ESRI ArcPro 2.9.1 utilising multi-point georeferencing (around 250-600) control points as well as the spline transformation. The map as been imported into ArcGIS online as a portable network graphics (PNG) file and is available for public use under the Non-Commercial Open Government Licence.