Dutchess County Ortho 4 bd 24in

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: NYS Office of Information Technology Services, GIS Program Office
Publication_Date: 20131007
Title:
Dutchess County Ortho 4 bd 24in
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: NYS Digital Ortho-imagery Program (NYSDOP)
Issue_Identification: 2013 imagery in Dutchess County
Publication_Information:
Publication_Place: Albany, New York
Publisher: NYS Office of Information Technology Services, GIS Program Office
Description:
Abstract:
These files contain 2013 digital Ortho-imagery of Dutchess County, New York. Image pixel size is 2' GSD. Image type is 4-band, RGB & NIR. T  Image horizontal accuracy is within 4' at the 95% confidence level (NSSDA). Each file contains an image covering 4000 ft. by 6000 ft. on the ground.
Purpose:
This digital Ortho-imagery can serve a variety of purposes, from general planning to field reference for spatial analysis to a tool for revision of vector maps. It can also serve as a reference layer for GIS.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20130506
Currentness_Reference:
ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.974554
East_Bounding_Coordinate: -73.483374
North_Bounding_Coordinate: 42.104321
South_Bounding_Coordinate: 41.519298
Keywords:
Theme:
Theme_Keyword_Thesaurus: Orthophoto, ortho
Theme_Keyword: Digital Ortho-imagery
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Dutchess County
Place_Keyword: New York
Access_Constraints: Some imagery tiles are classified as sensitive due to their content.
Use_Constraints:
Use of sensitive imagery, if granted, is only for the use specified in the request.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Tim Ruhren
Contact_Organization: NYS ITS GIS Program Office
Contact_Address:
Address_Type: mailing and physical address
Address:
tate Office Campus Building 7A, 4th Floor, 1220 Washington Avenue
City: Albany
State_or_Province: New York
Postal_Code: 12242
Country: USA
Contact_Voice_Telephone: 518-242-5029
Contact_Facsimile_Telephone: 518-322-4976
Contact_Electronic_Mail_Address: truhren@dhses.ny.gov
Hours_of_Service: 9am -4:30pm Easten time
Data_Set_Credit:
NYS ITS GIS Progam Office
Security_Information:
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850
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Data_Quality_Information:
Logical_Consistency_Report:
The dataset contains raster images or digital ortho images so the logical consistency report is not applicable. The file naming convention was supplied by New York State. When the ortho tiles were created the file names were restricted to a numeric value representing the lower left corner of the ortho tile. These tiles were then all renamed using a batch script so that they reflected the N.Y. state standard (i.e. "c_10470162_12_09600_4bd_2009.tif"). Consistency of file naming was ensured by using a batch process. The file naming convention consists of the first letter for Central, East, West or Long Island for New York State Plane Coordinate Systems (NYSPCS). The following four numeric characters represent the first four characters of the "X" coordinate value for the tile's lower left corner coordinate in NYSPCS and the next four characters represent the first four characters of the "Y" coordinate value for the tile's lower left corner coordinate in NYSPCS. The next two numeric characters represent the tile's Ground Sampling Distance (GSD) value in ft. The following five numeric characters represent the Above Mean Terrain (AMT) nominal height at which the DMC sensor recorded or collected the original imagery for the corresponding area. The next three characters are "4bd" for 4-band ortho-photos. Lastly, the last four numeric digits represent the year in which the particular ortho was created.
Completeness_Report:
The project consisted of 675 final tiles.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
+/-8 ft. at the 95% confidence level (NSSDA) for 24 inch resolution.
Lineage:
Process_Step:
Process_Description:
The Digital Natural Color aerial imagery was acquired in Spring 2013 using a DMC sensor flown at a nominal height of 19200' AMT (Above Mean Terrain). ABGPS data was also collected and processed using POSPac  (version 5.1) Mobile Mapping Suite .  The Ground Control used to support the 4-band ortho-imagery production was collected by identifying strategic points on previous aerial photography and supplemented by selecting new points or photo identifiable points (PID) in areas where needed due to a lack or minimal existence of points from previous ortho-imagery production projects and then determining the precise location coordinates of the entire ground control network by using ground survey techniques. The new Ground Control Network was also supplemented by targeting existing New York State HARN stations data. The Digital Aerial Triangulation (DAT) was performed, primarily, using softcopy workstations and Intergraph's ISAT. DAT solutions were independently reviewed and checked using independent blind control points. Digital Elevation Models (DEM) (mass-points and break-lines) used to support ortho imagery production were supplied by the state and updated using standard photogrammetric collection techniques on Intergraph soft copy workstations.  The images were then ortho-rectified using Sanborn's proprietary APS orthophoto software modules. Color balancing, seamless mosaicking was performed by automatic and manual seam line creation steps, final color balancing and final extractions were also accomplished using this software. A final tile by tile quality control was performed using Adobe PhotoShop software.  The imagery product deliverables are GeoTIFF images with embedded header information describing the required projection, pixel size, tile size and other related data and corresponding world files (.tfw).  Derivative compressed imagery is also available in JP2000 format.
Process_Date: Unknown
Source_Produced_Citation_Abbreviation:
Aerial Imagery
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Shawn Benham
Contact_Organization: Sanborn Map Company Inc.
Contact_Position: Project Manager
Contact_Address:
Address_Type: mailing address
Address:
1935 Jamboree Drive, Suite 100
City: Colorado Springs
State_or_Province: Colorado
Postal_Code: 80920
Country: USA
Contact_Voice_Telephone: 719-502-1296
Contact_Electronic_Mail_Address: sbenham@sanborn.com
Hours_of_Service: 9am - 5pm Eastern Time
Cloud_Cover: <1%
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Transverse Mercator
Transverse_Mercator:
Transverse Mercator
Scale_Factor_at_Central_Meridian: 0.999900
Longitude_of_Central_Meridian: -74.500000
Latitude_of_Projection_Origin: 38.833333
False_Easting: 492125.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000
Ordinate_Resolution: 0.000000
Planar_Distance_Units: survey feet
Geodetic_Model:
Horizontal_Datum_Name: D_North_American_1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
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Entity_and_Attribute_Information:
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Distribution_Information:
Resource_Description: Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 0.004
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Metadata_Reference_Information:
Metadata_Date: 20131007
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Tim Ruhren
Contact_Organization: NYS ITS GIS Program Office
Contact_Position: NYS GIS Clearinghouse
Contact_Address:
Address_Type: mailing and physical address
Address:
State Office Campus Building 7A, 4th Floor, 1220 Washington Avenue
City: Albany
State_or_Province: New York
Postal_Code: 12242
Country: USA
Contact_Voice_Telephone: 518-242-5029
Contact_Facsimile_Telephone: 518-322-4976
Contact_Electronic_Mail_Address: truhren@dhses.ny.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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