PAMAP Program - County Mosaics 2007

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:PAMAP Program, PA Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey

Publication_Date:2007

Title:

PAMAP Program - County Mosaics 2007

Geospatial_Data_Presentation_Form:remote-sensing image

Series_Information:

Series_Name:PAMAP Program

Publication_Information:

Publication_Place:Middletown, PA

Publisher:PAMAP Program, PA Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey

Online_Linkage: http://www.pasda.psu.edu/

Description:

Abstract:

County Mosaics JPEG 2000 format -  This dataset, produced by the PAMAP Program, consists of an orthorectified digital raster image (i.e. orthoimage) with a horizontal ground resolution of 1 foot. An orthoimage is a remotely sensed image 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. Source images were captured in natural color at a negative scale of 1:19200. PAMAP data are organized into blocks, which do not have gaps or overlaps, that represent 10,000 feet by 10,000 feet on the ground. The coordinate system for blocks in the northern half of the state is Pennsylvania State Plane North (datum:NAD83, units: feet); blocks in the southern half of the state are in Pennsylvania State Plane South. A block name is formed by concatenating the first four digits of the State Plane northing and easting defining the block's northwest corner, the State identifier "PA", and the State Plane zone designator "N" or "S" (e.g. 45001210PAS).

Purpose:

Aerial survey of the Commonwealth of Pennsylvania. Orthophotos serve a variety of purposes, from interim maps to field references for earth science investigations and analysis. 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.

Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date:2007

Single_Date/Time:

Calendar_Date:20050409

Single_Date/Time:

Calendar_Date:20050410

Currentness_Reference:

publication date

Status:

Progress:Complete

Maintenance_and_Update_Frequency:Unknown

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate:

East_Bounding_Coordinate:

North_Bounding_Coordinate:

South_Bounding_Coordinate:

Keywords:

Theme:

Theme_Keyword_Thesaurus:ISO 19115 Topic Categories

Theme_Keyword:digital orthophoto

Theme_Keyword:digital image map

Theme_Keyword:aerial photograph

Theme_Keyword:rectified photograph

Theme_Keyword:rectified image

Theme_Keyword:orthophoto

Theme_Keyword:DTM/DEM

Theme_Keyword:imageryBaseMapsEarthCover

Place:

Place_Keyword_Thesaurus:None

Place_Keyword:Pennsylvania

Access_Constraints:None

Use_Constraints:

Please review and agree to this disclaimer before continuing...
 
TERMS OF USE AND DISCLAIMER 
PLEASE READ THE FOLLOWING TERMS OF USE AND DISCLAIMER CAREFULLY BEFORE DOWNLOADING PAMAP Imagery and Elevation Data. YOU MUST AGREE TO THE DISCLAIMER AND ALL OTHER TERMS PROVIDED BELOW PRIOR TO DOWNLOADING PAMAP GIS DATA. IF YOU DO NOT AGREE, YOU MAY NOT DOWNLOAD PAMAP DATA FROM THIS WEB SITE. 
The Originator, Publisher and Distributor exclude any and all implied warranties and make no warranty or representation with respect to the data files or accompanying documentation, including quality, performance, merchantability or fitness for a particular purpose. These data files and documentation are provided 'as is' and the User assumes the entire risk as to their quality and performance. 
Commonwealth of Pennsylvania
Governor's Office of Administration
Geospatial Technologies Office
Health and Welfare Building, 7th Floor
Forster and 7th Streets
Harrisburg, PA 17120

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person:

Contact_Organization:PAMAP Program, PA Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey

Contact_Position:Director

Contact_Address:

Address_Type:mailing and physical address

Address:

Bureau of Topographic and Geologic Survey

Address:

3240 Schoolhouse Road

City:Middletown

State_or_Province:PA

Postal_Code:17057

Country:USA

Contact_Voice_Telephone:(717) 702-2053

Contact_Electronic_Mail_Address:

Hours_of_Service:0800-1630

Data_Set_Credit:

PAMAP Program, Bureau of Topographic and Geologic Survey, PA Department of Conservation and Natural Resources

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The accuracy of the ground control is confirmed by the evaluation of the results of the analytical bundle adjustment.  The residuals of the final adjustment ensured compliance with NSSDA standards.  The Pre Adjustment Gross Error Detection Statistical Test (Data Snooping, with a confidence level of 99.9%) have been applied to all observations included in the aerial triangulations. To detect small gross errors, during Adjustment Robust Estimators were used with the same confidence level and a power of the test of 1-beta=0.2. Systematic errors were eliminated through self calibration and through Additional Parameters. Their numerical stability, statistical significance, internal and external reliability were checked using Student-t test with the same confidence level and Variance/Co-variance analysis. Finally, the arrived variance factor C was submitted to a Chi-square test against the pre-adjustment variance factor using a confidence level 99.9%.

During the scanning of the original aerial film, the image histogram for each frame is carefully examined to ensure that the image has been scanned so that the minimum and maximum brightness values are captured to eliminate any loss of detail due to saturation of dark or light areas.  

Evaluation of the DEM includes checking the terrain data for spikes and wells, omissions, and other anomalies that do not meet the project accuracy requirements.  The horizontal and vertical accuracy has been tested by comparing the coordinates of well-defined points in the dataset with coordinates of the same points from an independent source of higher accuracy.

The program ORTHOQC is able to match the original image pixels of pass/tie points, ground control points, and check points, extract the corresponding horizontal coordinates from the digital ortho and compare them with the original measured points in the field.  Values of statistics such as RMSE, Max and Min Discrepancies, etc. are then derived and analyzed.

Logical_Consistency_Report:

All files are inspected by the Production Manager to ensure that they conform to the specified file naming conventions, all files load in their correct geographic position when loaded using the ASCII file header, all files conform to the project specifications for pixel resolution, file standard, dimensions, and compression, and all files do not contain blemishes such as visible seam lines, tone differences, data dropout or artifacts; scan swathing, or warped bridges and overpasses.

Completeness_Report:

All imagery is visually inspected for completeness to ensure that no gaps or image misplacement exists in the image area.  Imagery is mosaicked to ensure complete coverage for map sheets.  The imagery has been checked to ensure that the boundary and the content has been covered in its entirety.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The horizontal accuracy standard follows the NSSDA-1998 standard.  The maximum permissible RMSE for 95% of the horizontal check points for the mapping product is 5 feet or better.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

The DEM data meets the required vertical accuracy necessary to ensure that the horizontal accuracies of the orthophotos are met.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator:RETTEW Associates, Inc.

Publication_Date:20050520

Title:

GPS Photo Control Survey

Type_of_Source_Media:CD-ROM

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date:20050520

Source_Currentness_Reference:

ground condition

Source_Citation_Abbreviation:

GPS Ground Control

Source_Contribution:

To be utilized in the analytical aerotriangulation process.  All horizontal and vertical control was prepared under the supervision of licensed Professional Land Surveyors.

Source_Information:

Source_Citation:

Citation_Information:

Originator:Keystone Aerial Surveys, Inc.

Publication_Date:20050410

Title:

Color Aerial Photography

Geospatial_Data_Presentation_Form:remote-sensing image

Source_Scale_Denominator:19200

Type_of_Source_Media:filmstrip

Source_Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date:20050406

Single_Date/Time:

Calendar_Date:20050409

Single_Date/Time:

Calendar_Date:20050410

Source_Currentness_Reference:

ground condition

Source_Citation_Abbreviation:

Aerial Photography

Source_Contribution:

Color Aerial photography to be used in the creation of digital orthophotos.

Process_Step:

Process_Description:

Horizontal and Vertical control points were acquired utilizing GPS collection techniques.  All control was prepared under the supervision of licensed Professional Land Surveyors.

Process_Date:20050520

Source_Produced_Citation_Abbreviation:

GPS Ground Control

Process_Step:

Process_Description:

Aerial photography utilizing airborne GPS techniques was acquired at an altitude of 9600' AMT producing a negative scale of 1" = 1600'.  Aerial photography was exposed on color negative aerial film.

Process_Date:20050410

Source_Produced_Citation_Abbreviation:

Aerial Photography

Process_Step:

Process_Description:

Softcopy aerotriangulation utilizes the GPS ground control, airborne GPS data, and image coordinate measurements which are run through bundle block adjustment software computing the exterior orientation parameters for each image of the photogrammetric project.  The original aerial film was scanned utilizing a Socet Set DSW700 precision photogrammetric scanner at a resolution of 12.5 microns.  Using these scans the aerotriangulation process employs a rigorous mathematical model which detects measurement errors, and corrects for systematic image distorion, film shrikage, atmospheric refraction and camera lens distortions.  The final bundle adjustment results are inspected to ensure that the RMSE meets the required 1 part in 10000.

Source_Used_Citation_Abbreviation:

GPS Ground Control

Source_Used_Citation_Abbreviation:

Aerial Photography

Process_Date:20050906

Source_Produced_Citation_Abbreviation:

Analytical Aerotriangulation

Process_Step:

Process_Description:

A combination of manual stereo compilation and auto-correlation techniques were used to generate a DTM/DEM to support the accurate generation of the orthophotos.

Source_Used_Citation_Abbreviation:

Aerial Photography

Source_Used_Citation_Abbreviation:

Analytical Aerotriangulation

Process_Date:20051101

Source_Produced_Citation_Abbreviation:

DTM/DEM

Process_Step:

Process_Description:

Digital orthorectification includes a spatial and radiometric transformation of the scanned image from line/sample space into the specified ground coordinate system.  The interior and exterior orientation parameters from the aerotriangulation process are used to project each pixel into the ground coordinate system, while the DEM is used to correct for relief displacement.  The Color orthophotos are generated by Intergraph's Base Rectifier using a cubic convolution algorithm.  Once the images are ortho-rectified, they are checked for geometric accuracy and image quality, and tone-balanced.  The individual overlapping orthophotos are mosaicked together using Automatic Image Mosaicker (AIM) software into one seamless image data set.  Final tiles are then extracted from the image set to the project tiling scheme.

Source_Used_Citation_Abbreviation:

Aerial Photography

Source_Used_Citation_Abbreviation:

Analytical Aerotriangulation

Source_Used_Citation_Abbreviation:

DTM/DEM

Process_Date:20060222

Source_Produced_Citation_Abbreviation:

Color Digital Orthophotography

Process_Step:

Process_Description:

Metadata imported.

Source_Used_Citation_Abbreviation:

D:\metadata\h6620 Lehigh Co\Base Delivery 10k South Template\metadata.xml

Process_Step:

Process_Description:

Dataset copied.

Source_Used_Citation_Abbreviation:

\\Mirror\pasdaroot\UCI_Metadata\PAMAP_CountyMosaics

Process_Date:20090421

Process_Time:09405500

Process_Step:

Process_Description:

Dataset copied.

Source_Used_Citation_Abbreviation:

D:\PAMAP\PAMAP_CountyMosaicsCycle2

Process_Date:20090421

Process_Time:09485500

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method:Raster

Raster_Object_Information:

Raster_Object_Type:Pixel

Row_Count:10000

Column_Count:10000

Vertical_Count:1

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Lambert_Conformal_Conic:

Standard_Parallel:39.933333

Standard_Parallel:40.966667

Longitude_of_Central_Meridian:-77.750000

Latitude_of_Projection_Origin:39.333333

False_Easting:1968500.000000

False_Northing:0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method:coordinate pair

Coordinate_Representation:

Abscissa_Resolution:1.000000

Ordinate_Resolution:1.000000

Planar_Distance_Units:survey feet

Geodetic_Model:

Horizontal_Datum_Name:North American Datum of 1983

Ellipsoid_Name:Geodetic Reference System 80

Semi-major_Axis:6378137.000000

Denominator_of_Flattening_Ratio:298.257222

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

A digital number from 0 to 255 will be assigned to each pixel.  For the color imagery this number refers to a color look-up table which will contain the red, green, and blue (RGB) values, each from 0 to 255, for that digital number.

Entity_and_Attribute_Detail_Citation:

Where applicable, all data conforms to the PAMAP Technical Proposal dated January 14, 2005.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Organization:Pennsylvania Spatial Data Access (PASDA)

Contact_Address:

Address_Type:mailing and physical address

Address:

Penn State Institutes for the Environment

Address:

Penn State University

Address:

117 Land & Water Research Building

City:University Park

State_or_Province:PA

Postal_Code:16802

Country:USA

Contact_Voice_Telephone:814-863-0104

Contact_Facsimile_Telephone:814-865-3378

Contact_Electronic_Mail_Address:pasda@psu.edu

Resource_Description:Downloadable Data

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.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size:0.000

Metadata_Reference_Information:

Metadata_Date:20090421

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:Pennsylvania Spatial Data Access (PASDA)

Contact_Address:

Address_Type:mailing and physical address

Address:

Penn State Institutes for the Environment

Address:

Penn State University

Address:

117 Land & Water Research Building

City:University Park

State_or_Province:PA

Postal_Code:16802

Country:USA

Contact_Voice_Telephone:814-863-0104

Contact_Facsimile_Telephone:814-865-3378

Contact_Electronic_Mail_Address:pasda@psu.edu

Metadata_Standard_Name:FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version:FGDC-STD-001-1998

Metadata_Time_Convention:local time

Metadata_Extensions:

Online_Linkage:

Profile_Name:ESRI Metadata Profile