USGS High Resolution Orthoimage Lehigh / Northampton County, PA


Identification_Information:
Citation:
Citation_Information:
Originator:Lehigh Valley Planning Commission, U.S. Geological Survey
Publication_Date:2010
Title:
USGS High Resolution Orthoimage Lehigh / Northampton County, PA
Geospatial_Data_Presentation_Form:remote-sensing image
Publication_Information:
Publication_Place:Sioux Falls, SD
Publisher:U.S. Geological Survey
Description:
Abstract:
Digital orthophoto covering Lehigh and Northampton County, Pennsylvania that was flown in spring 2010. An orthoimage is remotely sensed image data that has been positionally corrected for camera lens distortion, vertical displacement and variations in aircraft altitude and orientation. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map.

Flown during leaf off conditions between March 27, 2010 and April 22, 2010.

Digital imagery at 1''= 200' design scale natural color aerial photography at 1' pixel resolution.

Image tile dimensions are 5000' by 5000' and 1000 tiles cover the entirety of Lehigh and Northampton Counties.
Purpose:
Educational, Demonstrational - The digital orthophoto is useful as a layer of a geographic information system and as a tool for revision of digital line graphs and topographic maps.
Supplemental_Information:
The imagery was paid for from federal funds through PennDOT and was a co-operative partnering agreement between PennDOT, LVPC, the Delaware Valley Regional Planning Commission (DVRPC) and the U.S. Geological Survey (USGS). 
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date:201003
Ending_Time:201004
Currentness_Reference:
ground condition
Status:
Progress:Complete
Maintenance_and_Update_Frequency:Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate:-75.92
East_Bounding_Coordinate:-75.03
North_Bounding_Coordinate:40.98
South_Bounding_Coordinate:40.40
Keywords:
Theme:
Theme_Keyword_Thesaurus:ISO 19115 Topic Categories
Theme_Keyword:1.0 foot orthoimage
Theme_Keyword:rectified photograph
Theme_Keyword:rectified image
Theme_Keyword:orthophoto
Theme_Keyword:natural color orthophoto
Theme_Keyword:orthoimage
Theme_Keyword:image map
Theme_Keyword:imageryBaseMapsEarthCover
Place:
Place_Keyword:Lehigh County
Place_Keyword:Northampton County
Place_Keyword:Pennsylvania
Access_Constraints:none
Use_Constraints:
None.   However, users should be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer represent actual surface conditions.  Users should not use this data for critical applications without a full awareness of it's limitations.
Acknowledgment of the U.S. Geological Survey would be appreciated for products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person:Thomas K. Edinger
Contact_Organization:Lehigh Valley Planning Commission
Contact_Position:GIS Manager
Contact_Address:
Address_Type:mailing and physical address
Address:
961 Marcon Boulevard - Suite 310
City:Allentown
State_or_Province:Pennsylvania
Postal_Code:18109
Country:United States
Contact_Voice_Telephone:(610) 264-4544
Contact_Facsimile_Telephone:(610) 264-2616
Contact_Electronic_Mail_Address:lvpc@lvpc.org
Data_Set_Credit:
Aero-Metric, Inc.
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
        Radiometry is verified by visual inspection of the digital orthophoto.  Slight systematic radiometric differences may exist between adjacent orthoimage files; these are due primarily to differences in source image capture dates and sun angles along flight lines. These differences can be observed in an image's general lightness or darkness when it is compared to adjacent orthoimage file coverages. Tonal balancing may be performed over a group of images during the mosaicking process which may serve to lighten or darken adjacent images for better color tone matching.
      
Logical_Consistency_Report:
GeoTIFFs conform to the specifications set forth by the USGS for production of orthophotos in the Task Order Number G10PD00660.
Completeness_Report:
      Orthoimages are visually inspected for completeness to ensure that no gaps or image misplacements exist within and between adjacent images. These images are derived by mosaicking multiple images to ensure complete coverage. Source imagery is cloud free.
		
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
          Ortho image horizontal positional accuracy shall not exceed 4.9 feet at the 95% confidence level as defined and tested using NSSDA standards.
        
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 2.10
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:Aero-Metric, Inc.
Publication_Date:2010
Title:
027134
Geospatial_Data_Presentation_Form:remote-sensing image
Source_Scale_Denominator:25,404
Type_of_Source_Media:digital tape media
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20100327
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
Image
Source_Contribution:
					
          Source imagery for orthophoto production.
        
Source_Information:
Source_Citation:
Citation_Information:
Originator:Aero-Metric, Inc.
Publication_Date:2010
Title:
027135
Geospatial_Data_Presentation_Form:remote-sensing image
Source_Scale_Denominator:25,404
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20100327
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
Image
Source_Contribution:
					
          Source imagery for orthophoto production.
        
Source_Information:
Source_Citation:
Citation_Information:
Originator:Aero-Metric, Inc.
Publication_Date:2010
Title:
027136
Geospatial_Data_Presentation_Form:remote-sensing image
Source_Scale_Denominator:25,404
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20100327
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
Image
Source_Contribution:
					
          Source imagery for orthophoto production.
        
Source_Information:
Source_Citation:
Citation_Information:
Originator:Aero-Metric, Inc.
Publication_Date:2010
Title:
028131
Geospatial_Data_Presentation_Form:remote-sensing image
Source_Scale_Denominator:25,404
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
Image
Source_Contribution:
					
          Source imagery for orthophoto production.
        
Source_Information:
Source_Citation:
Citation_Information:
Originator:Aero-Metric, Inc.
Publication_Date:2010
Title:
028132
Geospatial_Data_Presentation_Form:remote-sensing image
Source_Scale_Denominator:25,404
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20100327
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
Image
Source_Contribution:
					
          Source imagery for orthophoto production.
        
Source_Information:
Source_Citation:
Citation_Information:
Originator:Aero-Metric, Inc.
Publication_Date:2010
Title:
028133
Geospatial_Data_Presentation_Form:remote-sensing image
Source_Scale_Denominator:25,404
Type_of_Source_Media: digital
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20100327
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
Image
Source_Contribution:
					
          Source imagery for orthophoto production.
        
Source_Information:
Source_Citation:
Citation_Information:
Originator:Lehigh Valley Planning Commission
Publication_Date:2010
Title:
LVPC Supplied Elevation Data
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2005
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
DEM
Source_Contribution:
					
          Used to provide ground elevations for orthorectification process.
        
Source_Information:
Source_Citation:
Citation_Information:
Originator:Aero-Metric, Inc.
Publication_Date:2010
Title:
LVPC Aerotriangulation
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:201007
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
AT
Source_Contribution:
					
          Used to provide photo exterior orientations for orthorectification process.
        
Process_Step:
Process_Description:
					
          The DMC images were aerotriangulated to support digital ortho image production for the Lehigh Valley Planning Commission project area.  Airborne GPS and ground check point data was provided by AERO-METRIC, Inc.  The project was referenced to the North American Datum of 1983 (NAD83), State Plane Coordinate System 1983, Pennsylvania South Zone horizontally and to the North American Vertical Datum of 1988 (NAVD88) vertically.  Units were in U.S. survey feet.

The DMC images, ABGPS data, and ground check point data were used as inputs to the Zeiss/Intergraph ImageStation Automatic Triangulation (ISAT) softcopy program.  ISAT correlated image points and aerotriangulated the block of images to create exposure station exterior orientations.  All ground points were manually measured on the imagery.  These points were included in the aerotriangulation adjustments for absolute ground location verification.
 
The scale of the aerial photos was 1:25,404.  The photography was exposed between 3/27/10 and 4/22/10.

Rectification was done using the aerotriangulation data, raw DMC images, and LVPC provided elevation data.  These rectified images were used to draw seamlines.  The images were then dodged.  The dodged rectified images were mosaicked, balanced, and cut into image tiles.  These tiles were viewed and artifacts were removed as well as other edits performed. Then the edited tiles were reprojected from UTM to PA-SPCS, mosaicked together and the final tiles were cut out. The final tiles were QC'd before generating the MrSID tiles and mosaic.
        
Process_Date: 201010
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method:Raster
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name:State Plane Coordinate System
State_Plane_Coordinate_System:
SPCS_Zone_Identifier:Pennsylvania South
Transverse_Mercator:
Scale_Factor_at_Central_Meridian:0.999975
Longitude_of_Central_Meridian:-77.75
Latitude_of_Projection_Origin:39.3333333333333334
False_Easting:1968500.000000
False_Northing:0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution:1.0
Ordinate_Resolution:1.0
Planar_Distance_Units:feet
Geodetic_Model:
Horizontal_Datum_Name:North American Datum of 1983
Ellipsoid_Name:Geodetic Reference System 80
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Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
				
        Natural color orthoimagery is organized in three color bands or channels which represent the red, green, and blue portions of the spectrum.  Each image pixel is assigned a triplet of numeric values, one for each color band.  Numeric values range from 0 to 255. Areas where data is incomplete due to lack of full image coverage are represented with the numeric value of 0.
      
Entity_and_Attribute_Detail_Citation:
        U.S. Department of the Interior, U.S. Geological Survey, 1996, Standards for Digital Orthophotos: Reston, VA.
       
			
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Organization:Pennsylvania Spatial Data Access (PASDA)
Contact_Address:
Address_Type:mailing and physical address
Address:
115 Land & Water Research 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.
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Metadata_Reference_Information:
Metadata_Date:201105
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 & Water Research 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
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