SDE raster digital dataWashington, DCDistrict of Columbia Office of the Chief Technology Officer (OCTO)IMAGE.ORTHO2009Pictometry IncIMAGE.ORTHO200920090824withheldenThis data is used for the planning and management of Washington, D.C. by local government agencies.GSD: Pixels have a 1 foot GSD.
Coverage: Coverage is 1 square mile.
Overlap: Zero overlap, tiles have contiguous edges.
Feathering: Component images are feathered together using a 20-pixel feather region.
Cut-Lines: Cut lines are selected based on distance from nadir and do not take ground features into account.
Radiometric Balancing: Images are color balanced, however some radiometric differences may be seen across flat fields such as water or grassy planes.
Building Lean: Building lean is minimized by utilizing N5 orthogonal input images when available, however no other building lean corrections are performed.
Elevation Data: 1995 1 meter contours.2009 Aerial Photography (1 foot resolution) - Sector Tiles Pictometry provided as part of the 2009 photo capture were exported to tiff and provided as a raster catalog. An Ortho Sector Tile is typically a 1 foot GSD ortho mosaic tile covering a 1-square mile area that is created by deresolving the best available orthogonal images captured. Images are not radiometrically balanced, may have observable cut lines and could consist of imagery taken over a period of several days.
Note - Print at your own risk, the images have seamlines between some tiles and the Pictometry logo is in the southeast corner of every tile.
All DC GIS data is stored and exported in Maryland State Plane coordinates NAD 83 meters.
METADATA CONTENT IS IN PROCESS OF VALIDATION AND SUBJECT TO CHANGE.20090111ground conditionUnknown-77.121424-76.89699338.99481038.791782389481.534155408923.545864124899.060167149037.744475NoneAerial Photography Planning Imagery Orthos Orthophotography imageryBaseMapsEarthCoverGeographic Names Information SystemUnited States of America (USA)Washington, D.C.District of ColumbiaD.C.Acknowledgment of the DC Geographic Information Systems Program (DC GIS). The District of Columbia Government makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.D.C. Office of the Chief Technology OfficerGIS Data Coordinatormailing and physical address
441 4th St NW, Suite 930 South
WashingtonD.C.20001(202)727-5660dcgis@dc.gov8:30 AM - 5:00 PMD.C. Office of the Chief of Technology Officer (OCTO)
Pictometry Inc
7320 Executive Way
Frederick, MD 21704
(301)948-8550ESRI ArcCatalog 9.2.6.1500Raster DatasetPixel placement accuracy is based on the accuracy of the component imagery. N5 orthogonal images are used when available to maximize accuracy, however Pictometry does not warrant any pixel placement accuracy. The most significant source of error is generally the error introduced by the elevation data.
Pictometry's orthogonal images provide the coordinate accuracy fulfilling most planemetric requirements, however, Pictometry data is not intended for authoritative definitive mapping or surveying replacement. If there is a need for authoritative mapping products, additional work is required by licensed individuals in order to certify Pictometry's orthogonal imagery. Alternatively, a separate, authoritative orthogonal image capture can be done and those orthogonal images used inside of Pictometry. Our oblique images are unique to Pictometry and are intended to provide data not available elsewhere and lateral views with more visual information, such as building stock analysis. In Pictometry the orthogonal and oblique images are linked for your convenience and additional study. With a few clicks you can find the revealing lateral views, height measurements, and other information afforded by the oblique images while using the coordinate accuracy afforded by the orthogonal images.N/APictometry Inc.20070406Aerial Photography of Washington, D.C.remote-sensing imagehttp://www.pictometry.comdigital camera20050404ground conditionPictometrySensor Size Pixels: 4008 x 2672 (or 3208 x 2672 for some Community level imagery) in a Landscape orientation.
Image Format Industry-standard image format with proprietary image trailer, including JFIF (JPEG), TIFF, and BMP.
Image Quality Images will have an unobstructed view of the ground. In controlled airspace around airports, etc., and in areas of rapid elevation changes, the image footprint sizes and resolutions may vary. There may be varying degrees of ground illumination and color variations due to lighting and cloud shadows.
Measurement Accuracy 0.5% measurement error, excluding user pixel selection error
Pixel Placement Accuracy Pictometry provides a visualization system and therefore does not certify image accuracy. However, some Pictometry customers have done their own certification on the Pictometry data after delivery and have shared their results. On average, customers have been seeing better than 1.0-meter RMS error at a 95% confidence level (NMAS 1:1200) for orthogonal imagery over relatively flat terrain or in areas with accurate elevation data, and 2.0-meter RMS error at a 95% confidence level (NMAS 1:2400) for more varied terrain or in areas with poor elevation data. However, Pictometry does not guarantee these accuracies and your results may vary.
Sensor Orientation Pictometry utilizes an IMU (Inertial Measurement Unit), ground station post-corrected differential GPS, and Kalman filtering to achieve a high degree of positional and directional accuracy.
Sensor Positional Accuracy mean 15cm absolute
Sensor Directional Accuracy 0.015 degrees absolute (roll/pitch)
0.035 degrees absolute (heading)
Ortho-Rectification The images are ortho-rectified to back out the optical deviations of the capture system and the variations due to elevation changes (utilizing the best DEM data available, including customer provided DEM data), resulting in geographically square pixels aligned to a rectilinear grid. This grid can be one of any number of coordinate systems, including Latitude/Longitude, State Plane, UTM, and more. The desired coordinate system should be specified in the contract, or a default coordinate system will be used.
Image Export J
FIF (JPEG), TIFF, BMP
EFS software can be utilized to export the images into any of the above industry-standard formats. The orthogonal images can optionally be re-projected during this export process, and an associated geography file can be created as well for use in importing the images into GIS mapping software.
Image Tiling Individual orthogonal images are edge-feathered and mosaiced to produce orthogonal image tiles with tile sizes selected to balance single image coverage as well as manageability of open images. These orthogonal tiles provide continuous coverage across the area of interest. While some color balancing is done, these orthogonal tiles are not fully radiometrically balanced or edge-matched.
20070406withheldPictometry Incmailing and physical address
100 Town Centre Drive, Suite A
RochesterNY14623-4260USA888-771-9714585-486-0098info@pictometry.com8:30 Am - 5:00 p,Metadata imported.withheld20091115N/ANorth American Vertical Datum of 19881.000000MetersExplicit elevation coordinate included with horizontal coordinatesrow and column0.3048010.304801metersGCS_North_American_1983NAD_1983_StatePlane_Maryland_FIPS_1900North American Datum of 1983Geodetic Reference System 806378137.000000298.257222D.C. Office of the Chief TechnologyGIS Data Coordinatormailing and physical address
441 4th Street NW
Suite 930 South
WashingtonD.C.20001USA(202)727-5660dcgis@dc.gov8:30 am - 5:30 pmTIFFNo compression applied0.0000.000http://dcgis.dc.govNoneSee OCTO.Downloadable DataAcknowledgment of the DC Geographic Information Systems Program (DC GIS). The District of Columbia Government makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.20091115D.C. Office of the Chief TechnologyGIS Data Coordinatormailing and physical address
441 4th Street NW
Suite 930
WashingtonD.C.20001N/A(202)727-5660dcgis@dc.gov8:30 am - 5:00 pmFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998enlocal time07/24/072009111500571500FALSE20261014111130002026101416152000Ortho2009.tif389481.534155408923.545864124899.060167149037.7444751002ProjectedGCS_North_American_1983Linear Unit: Meter (1.000000)NAD_1983_StatePlane_Maryland_FIPS_1900<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.5.0'><WKT>PROJCS["NAD_1983_StatePlane_Maryland_FIPS_1900",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",400000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-77.0],PARAMETER["Standard_Parallel_1",38.3],PARAMETER["Standard_Parallel_2",39.45],PARAMETER["Latitude_Of_Origin",37.66666666666666],UNIT["Meter",1.0],AUTHORITY["EPSG",26985]]</WKT><XOrigin>-36747100</XOrigin><YOrigin>-29091500</YOrigin><XYScale>121236910.21292362</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>26985</WKID><LatestWKID>26985</LatestWKID></ProjectedCoordinateSystem>8FALSELZW3TIFFTRUEcontinuousunsigned integer256{7B3A35D4-8919-47AC-8974-908B2A6455C9}1.01500000005000FGDCRasterPixel79195637860.3048010.30480181Upper LeftFALSELZ773pixel codesTRUESDRObjectIDObjectIDOID400Internal feature number.ESRISequential unique whole numbers that are automatically generated.OBJECTIDOBJECTIDOID4100Internal feature number.ESRISequential unique whole numbers that are automatically generated.NAMENAMEString25600SHAPEShapeGeometry400Feature geometry.ESRICoordinates defining the features.RASTERRaster0400IMAGE.Ortho2009Feature Class93SHAPE.AREASHAPE.AREADouble000SHAPE.LENSHAPE.LENDouble000Band_2Table256ObjectIDObjectIDOID400Internal feature number.ESRISequential unique whole numbers that are automatically generated.ValueValueInteger000CountCountInteger000Band_3Table256ObjectIDObjectIDOID400Internal feature number.ESRISequential unique whole numbers that are automatically generated.ValueValueInteger000CountCountInteger000D.C. Office of the Chief TechnologyGIS Data CoordinatorN/A(202)727-5660441 4th Street NW Suite 930WashingtonD.C.20001dcgis@dc.gov8:30 am - 5:00 pmArcGIS Metadata1.0D.C. Office of the Chief TechnologyGIS Data Coordinator(202)727-5660441 4th Street NW Suite 930 SouthWashingtonD.C.20001USdcgis@dc.gov8:30 am - 5:30 pmNoneSee OCTO.TIFFNo compression appliedhttp://dcgis.dc.govRaster Dataset2009-08-24District of Columbia Office of the Chief Technology Officer (OCTO)Washington, DCPictometry IncAerial Photography (Orthophoto) - 2009<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>2009 Aerial Photography (1 foot resolution) - Sector Tiles Pictometry provided as part of the 2009 photo capture were exported to tiff and provided as a raster catalog. An Ortho Sector Tile is typically a 1 foot GSD ortho mosaic tile covering a 1-square mile area that is created by deresolving the best available orthogonal images captured. Images are not radiometrically balanced, may have observable cut lines and could consist of imagery taken over a period of several days. Note - Print at your own risk, the images have seamlines between some tiles and the Pictometry logo is in the southeast corner of every tile. All DC GIS data is stored and exported in Maryland State Plane coordinates NAD 83 meters.</SPAN></P></DIV></DIV></DIV>This data is used for the planning and management of Washington, D.C. by local government agencies.Office of the Chief of Technology Officer D.C. Office of the Chief Technology OfficerGIS Data Coordinator(202)727-5660441 4th St NW, Suite 930 SouthWashingtonD.C.20001dcgis@dc.gov8:30 AM - 5:00 PMGeographic Names Information SystemWashingtonD.C.D.C.United States of America (USA)District of ColumbiaimageryBaseMapsEarthCoverOrthosOrthophotographyPlanningAerial PhotographyImagerytiffaerial photographyorthophotoWashington DCDistrict of ColumbiaOrthophoto 2005DChistoricimageryAcknowledgment of the DC Geographic Information Systems Program (DC GIS). The District of Columbia Government makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This work is licensed under a </SPAN><A href="https://creativecommons.org/licenses/by/4.0" target="_blank" STYLE="text-decoration:underline;"><SPAN><SPAN STYLE="text-decoration:underline;">Creative Commons Attribution 4.0 International License</SPAN></SPAN></A><SPAN>. </SPAN></P><P><SPAN>Acknowledgment of the DC Geographic Information Systems Program (DC GIS). The District of Columbia Government makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.</SPAN></P></DIV></DIV></DIV>ground condition2009-01-11GSD: Pixels have a 1 foot GSD. Coverage: Coverage is 1 square mile. Overlap: Zero overlap, tiles have contiguous edges. Feathering: Component images are feathered together using a 20-pixel feather region. Cut-Lines: Cut lines are selected based on distance from nadir and do not take ground features into account. Radiometric Balancing: Images are color balanced, however some radiometric differences may be seen across flat fields such as water or grassy planes. Building Lean: Building lean is minimized by utilizing N5 orthogonal input images when available, however no other building lean corrections are performed. Elevation Data: 1995 1 meter contours.Esri ArcGIS 13.5.5.573661-77.121445-76.89697039.00929238.791780Last metadata review date: 07/24/07N/APixel placement accuracy is based on the accuracy of the component imagery. N5 orthogonal images are used when available to maximize accuracy, however Pictometry does not warrant any pixel placement accuracy. The most significant source of error is generally the error introduced by the elevation data. Pictometry's orthogonal images provide the coordinate accuracy fulfilling most planemetric requirements, however, Pictometry data is not intended for authoritative definitive mapping or surveying replacement. If there is a need for authoritative mapping products, additional work is required by licensed individuals in order to certify Pictometry's orthogonal imagery. Alternatively, a separate, authoritative orthogonal image capture can be done and those orthogonal images used inside of Pictometry. Our oblique images are unique to Pictometry and are intended to provide data not available elsewhere and lateral views with more visual information, such as building stock analysis. In Pictometry the orthogonal and oblique images are linked for your convenience and additional study. With a few clicks you can find the revealing lateral views, height measurements, and other information afforded by the oblique images while using the coordinate accuracy afforded by the orthogonal images.N/AAerial Photography of Washington, D.C.Pictometry2007-04-06Pictometry Inc.remote-sensing imagehttp://www.pictometry.comground condition2005-04-04Sensor Size Pixels: 4008 x 2672 (or 3208 x 2672 for some Community level imagery) in a Landscape orientation. Image Format Industry-standard image format with proprietary image trailer, including JFIF (JPEG), TIFF, and BMP. Image Quality Images will have an unobstructed view of the ground. In controlled airspace around airports, etc., and in areas of rapid elevation changes, the image footprint sizes and resolutions may vary. There may be varying degrees of ground illumination and color variations due to lighting and cloud shadows. Measurement Accuracy 0.5% measurement error, excluding user pixel selection error Pixel Placement Accuracy Pictometry provides a visualization system and therefore does not certify image accuracy. However, some Pictometry customers have done their own certification on the Pictometry data after delivery and have shared their results. On average, customers have been seeing better than 1.0-meter RMS error at a 95% confidence level (NMAS 1:1200) for orthogonal imagery over relatively flat terrain or in areas with accurate elevation data, and 2.0-meter RMS error at a 95% confidence level (NMAS 1:2400) for more varied terrain or in areas with poor elevation data. However, Pictometry does not guarantee these accuracies and your results may vary. Sensor Orientation Pictometry utilizes an IMU (Inertial Measurement Unit), ground station post-corrected differential GPS, and Kalman filtering to achieve a high degree of positional and directional accuracy. Sensor Positional Accuracy mean 15cm absolute Sensor Directional Accuracy 0.015 degrees absolute (roll/pitch) 0.035 degrees absolute (heading) Ortho-Rectification The images are ortho-rectified to back out the optical deviations of the capture system and the variations due to elevation changes (utilizing the best DEM data available, including customer provided DEM data), resulting in geographically square pixels aligned to a rectilinear grid. This grid can be one of any number of coordinate systems, including Latitude/Longitude, State Plane, UTM, and more. The desired coordinate system should be specified in the contract, or a default coordinate system will be used. Image Export J FIF (JPEG), TIFF, BMP EFS software can be utilized to export the images into any of the above industry-standard formats. The orthogonal images can optionally be re-projected during this export process, and an associated geography file can be created as well for use in importing the images into GIS mapping software. Image Tiling Individual orthogonal images are edge-feathered and mosaiced to produce orthogonal image tiles with tile sizes selected to balance single image coverage as well as manageability of open images. These orthogonal tiles provide continuous coverage across the area of interest. While some color balancing is done, these orthogonal tiles are not fully radiometrically balanced or edge-matched.2007-04-06Pictometry Inc888-771-9714585-486-0098100 Town Centre Drive, Suite ARochesterNY14623-4260USinfo@pictometry.com8:30 Am - 5:00 p,Analytical AerotriangulationdatasetEPSG4.5(3.0.1)20261014210389481.534155 124899.060167389481.534155 149037.744475408923.545864 149037.744475408923.545864 124899.060167399202.540009 136968.402321637860.304801791950.304801Band_18Band_28Band_38