Philadelphia Imagery 2016_3inch
Identification_Information:
Citation:
Citation_Information:
Originator:City of Philadelphia
Publication_Date:2016
Title:
Philadelphia Imagery 2016_3inch
Geospatial_Data_Presentation_Form:remote-sensing image
Online_Linkage: http://www.pasda.psu.edu/
Description:
Abstract: 
Color Citywide digital orthophotography with a ground resolution of 3 inch per pixel, georeferenced to the Pennsylvania State Plane Coordinate System, and delivered as mosaicked raster images only. The dataset consists of mosaicked orthogonal imagery produced from nadir images captured by Pictometry International during the period of March 1, 2016 through April 30, 2016. NOTE: This imagery mosaicked by way of an automated process. There was no manual correction of visible seamlines.
Purpose: 
to support the needs of the City of Philadelphia, PA. Other uses expected.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date:20160301
Ending_Date:20160430
Currentness_Reference: 
publication date
Status:
Progress:Complete
Maintenance_and_Update_Frequency:None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate:-75.232812
East_Bounding_Coordinate:-75.212820
North_Bounding_Coordinate:39.870539
South_Bounding_Coordinate:39.855211
Keywords:
Theme:
Theme_Keyword_Thesaurus:ISO 19115 Topic Categories
Theme_Keyword:imageryBaseMapsEarthCover
Access_Constraints:None
Use_Constraints: 
The City of Philadelphia reserves all rights in the City's databases and any data contained therein, and the end user’s use of the data does not constitute a transfer of, nor does the end user receive, any title or interest in the database or any other City data. The City of Philadelphia makes no representation about the accuracy of any specific information in this data and is provided “as is” and without Warranty of any kind. The user of this data will assume complete responsibility for any and all occurrences resulting from its use or display and will hold the City of Philadelphia harmless from any and all claims, demands, liabilities, obligations, damages, suits, judgments or settlements, including reasonable costs and attorneys' fees, that arise from use of this data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:City of Philadelphia, Office of Innovation and Technology
Contact_Electronic_Mail_Address:maps@phila.gov
Native_Data_Set_Environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.4.1.5686
Back to Top
Data_Quality_Information:
Lineage:
Process_Step:
Process_Description: 
Product: Neighborhood (2500 ft) Imagery
Elevation Source: 2015 LiDAR

Acquisition:
Imagery was acquired with ground free of snow cover and deciduous vegetation less than 30% of full bloom. Frames with clouds were rejected and reflown. Any planned deviation from these conditions imposed by capture window constraints was discussed with client prior to commencement of acquisition.

Ortho-Rectification:
The vendor utilized best available Digital Terrain Models including a Pictometry Produced LiDAR derived DEM, combined with the calibrated camera interior orientations and directly observed Exterior Orientations (EOs) to rectify the images. 

Standard Ortho mosaic Products: Pictometry standard ortho mosaic products are produced through automated mosaicking processes that incorporate digital elevation data with individual Pictometry ortho frames to create large-area mosaics on an extremely cost-effective basis. Because these products are produced through automated processes, rather than more expensive manual review and hand-touched corrective processes, there may be inherent artifacts in some of the resulting mosaics. While Pictometry works to minimize such artifacts, the Pictometry standard ortho mosaic products are proved on an 'AS IS' basis with respect to visible cutlines along mosaic seams resulting from the following types of artifacts:

1. Disconnects in non-elevated surfaces generally caused by inaccurate elevation data;
2. Disconnects in elevated surfaces (e.g., roadways, bridges, etc.) generally caused by elevated surfaces not being represented in the elevation data:
3. Building intersect and clipping generally caused by buildings not being represented int he elevation data:
4. Seasonal variations caused by images taken at different times during a season, or during different seasons:
5. Ground illumination variations caused by images taken under different illumination (e.g. sunny, high overcast, morning light, afternoon light. etc.) within one flight day or during different flight days;
6. Single GSD color variations caused by illumination differences or mulitiple-aircraft/camera captures;
7. Mixed GSD color variations caused by adjacent areas being flown at different ground sample distances (GSDs); and 
8. Water body color variations caused by multiple individual frames being used to create a mosaic across a body of water (e.g., lakes, ponds, rivers, etc.).
Back to Top
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method:Raster
Raster_Object_Information:
Raster_Object_Type:Pixel
Row_Count:1655
Column_Count:1664
Back to Top
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Lambert_Conformal_Conic:
Standard_Parallel:39.933333333333
Standard_Parallel:40.966666666667
Longitude_of_Central_Meridian:-77.75
Latitude_of_Projection_Origin:39.333333333333
False_Easting:1968500.0
False_Northing:0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method:coordinate pair
Coordinate_Representation:
Abscissa_Resolution:0.000000026907964745248598
Ordinate_Resolution:0.000000026907964745248598
Planar_Distance_Units:us survey foot
Geodetic_Model:
Horizontal_Datum_Name:D North American 1983
Ellipsoid_Name:GRS 1980
Semi-major_Axis:6378137.0
Denominator_of_Flattening_Ratio:298.257222101
Back to Top
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Pennsylvania Spatial Data Access (PASDA)
Contact_Address:
Address_Type:mailing and physical address
Address: 
115 Land and Water Building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:United States
Contact_Voice_Telephone:(814) 865 8792
Contact_Electronic_Mail_Address:pasda@psu.edu
Distribution_Liability: 
The USER shall indemnify, save harmless, and, if requested, defend those parties involved with the development and distribution of this data, their officers, agents, and employees from and against any suits, claims, or actions for injury, death, or property damage arising out of the use of or any defect in the FILES or any accompanying documentation. Those parties involved with the development and distribution excluded any and all implied warranties, including warranties or merchantability and fitness for a particular purpose and makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.
Back to Top
Metadata_Reference_Information:
Metadata_Date:20170425
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Pennsylvania Spatial Data Access (PASDA)
Contact_Address:
Address_Type:mailing and physical address
Address: 
115 Land and Water building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:United States
Contact_Voice_Telephone:(814) 865 8792
Contact_Electronic_Mail_Address:pasda@psu.edu
Metadata_Standard_Name:FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version:FGDC-STD-001-1998
Metadata_Time_Convention:local time
Back to Top