Illinois Project T.O. 029

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Surdex Corporation and Science Applications International Corporation (SAIC)
Publication_Date: 2006
Title: Illinois Project T.O. 029
Geospatial_Data_Presentation_Form: Remote-sensing image
Publication_Information:
Publication_Place: Sioux Falls, SD
Publisher: U.S. Geological Survey
Description:
Abstract:
A 1.5-foot resolution panchromatic (B and W) USGS Digital Orthophoto Quarter-quadrangle (DOQQ) A DOQQ is a raster image in which displacement in the image caused by sensor orientation and terrain relief has been removed. A DOQQ combines the image characteristics of a photograph with the geometric qualities of a map. The geographic extent of the DOQQ is equivalent to a quarter of a 7.5-minute map (3.75 minutes of latitude and longitude) with overedge . The overedge ranges from a minimum of 50 meters to 300 meters beyond the extremes of the primary and secondary corner ticks. DOQQs are produced with a 1-meter ground sample distance (GSD) and are cast on the Universal Transverse Mercator (UTM) projection on the North American Datum of 1983 (NAD83). Primary (solid) and secondary (dashed) corner ticks are burned into the image to indicate the geographic corners of the DOQQ. The primary ticks always show the NAD83 corners. The secondary ticks show either the NAD27 or the local horizontal datum in use in a specific area (e.g. the Puerto Rico datum, the Hawaiian datum). Each DOQQ is produced to meet a National Map Accuracy Standard (NMAS) for 1:12000 scale maps (10.16 meters radial error at a 90% probability). Each DOQQ is formatted with a variable length ASCII header followed by a series of 8- bit image data lines. The ASCII header is padded to equal the length of one image line. The header contains information on file organization, display (samples and lines), georeferencing, and production sources. The file structure for a native format DOQQ is analogous to a raw raster BIL (panchromatic) or BIP (RGB color). DOQQs are nominally produced from National Aerial Photography Program (NAPP) source imagery flown at 20,000 feet above average ground using a single source image for each DOQQ. NAPP imagery is flown leaf-off in deciduous vegetation regions.
Purpose:
This data depicts geographic features on the surface of the earth. DOQQs serve a variety of purposes, from interim base maps to field references for earth science investigations and analysis. The DOQQ is useful as a layer in a geographic information system (GIS) and as a tool for performing digital map revision. DOQQs form the medium-resolution image base for The National Map.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20050218
Ending_Date: 20050504
Currentness_Reference: Ground Condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Unknown.
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: 1.5-foot orthophoto
Theme_Keyword: IL E SPCS DOQQ
Theme_Keyword: Digital orthophoto
Theme_Keyword: Digital orthophoto quarterquad
Theme_Keyword: Orthophoto
Theme_Keyword: Rectified photograph
Theme_Keyword: Rectified image
Theme_Keyword: Quarterquadrangle orthophoto
Theme_Keyword: DOQQ
Theme_Keyword: 3.75- x 3.75-minute orthophoto
Place:
Place_Keyword_Thesaurus:
U.S. Department of Commerce, 1995, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions, Federal Information Processing Standard (FIPS) 10-4): Washington, D.C., National Institute of Standards and Technology.
Place_Keyword: US
Place:
Place_Keyword_Thesaurus:
U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard (FIPS) 5-2): Washington, D.C., National Institute of Standards and Technology.
Place_Keyword: IL
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Project Level Metadata
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: Tim Bohn
Contact_Organization: Surdex Corporation
Contact_Position: Project Manager
Contact_Address:
Address_Type: Mailing and physical address
Address: 520 Spirit of St. Louis Blvd.
City: Chesterfield
State_or_Province: MO
Postal_Code: 63005
Contact_Voice_Telephone: 1-636-532-3427
Contact_Facsimile_Telephone: 1-636-537-9638
Contact_Electronic_Mail_Address: timb@surdex.com
Hours_of_Service: Monday through Friday 8:00 AM to 5:00 PM (EasternTime)
Contact_Instructions:
The above is the contact information for Surdex in Chesterfield, MO
Data_Set_Credit:
Surdex Corporation and Science Application International Corporation (SAIC)
Native_Data_Set_Environment:
LH Systems DSW700 Film Scanners, Surdex SurDodge Software, Intergraph's ISAT v04.04.17, Surdex Snoop tool, Surdex DOQQDB Production Software, Surdex developed orthorectification software, Inpho Orthovista software v4.0, Windows 2000 and Windows XP Operating System. SAIC QVerify V0.1 Software, SAIC QSideview V0.1., SUNW Ultra-4, Solaris OS V5.9

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The digital dodging software developed by Surdex is used to counter the effects of haze and sun angle illumination on the film photography. This procedure has been proven to provide a distinct advantage in minimizing the need for extensive radiometric balancing and improves automatic pass/tie point collection during the aerotriangulation phase. The net affect of this program is to drive the source image closer to a histogram with a nearly Gaussian distribution. The output of this program will always produce an image with full dynamic range, nearly regardless of the source image. Minimal radiometric balancing was achieved using Inpho's Ortho Vista software.
Logical_Consistency_Report:
All DOQQ header data and image file sizes are validated using USGS software before being archived. This validation process ensures correct physical format and field values for header elements. Logical relationships between header elements are tested. Overlap regions between individual DOQQs are visually inspected for excessive horizontal displacement.
Completeness_Report:
DOQQ images are visually inspected for completeness to ensure that no gaps or image misplacements exist within the 3.75-minute image area or the overedge coverage. DOQQs can be derived by mosaicking multiple images to ensure complete coverage. and between adjacent images. DOQQs are nominally produced from National Aerial Photography Program (NAPP) source imagery flown at 20,000 feet above average ground using a single source image for each DOQQ. NAPP imagery is flown leaf-off in deciduous vegetation regions. Source imagery is nominally cloud free. Coastal areas and international boundary regions may have areas without images (void areas) in parts of the coverage. These void areas have a radiometric value of either zero (black) or 128 (uniform gray). DOQQs nominally are produced with overedge coverage. This coverage is variable and may range from a minimum of 50 meters to a maximum of 300 meters beyond the extremes of the primary or secondary corners. The resulting DOQQ is a rectangle whose size may vary in relation to adjoining DOQQs.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Random selection of 5% of the DOQQ tiles for excessive edge match offset.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value:
Horizontal accuracy meets National Map Accuracy Standards for 1:12,000-scale maps
Horizontal_Positional_Accuracy_Explanation:
Various checks of Digital Elevation Models and Digital Orthophotos from a variety of other existing sources, including but not limited to previous projects done by Surdex.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Surdex Corporation
Publication_Date: 2005
Title: NAPP
Geospatial_Data_Presentation_Form: Remote-sensing image
Source_Scale_Denominator: 40000
Type_of_Source_Media: Stable-base material
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20050218
Ending_Date: 20050504
Source_Currentness_Reference: Ground Condition
Source_Citation_Abbreviation: PHOTO
Source_Contribution:
Stable-base aerial photography acquired at 1:40,000 scale using only metric aerial cameras with USGS calibration certificates. Provides the imagery for the digital orthoimage. Film is panchromatic.
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2003
Title: USGS 1-arcsec NED
Type_of_Source_Media: Hard Drive
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1929
Ending_Date: 1998
Source_Currentness_Reference: Ground condition
Source_Citation_Abbreviation: DEM
Source_Contribution:
USGS 1-arcsec National Elevation Dataset for the entire United States that was broken down into 1 degree cells.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Surdex Corporation
Publication_Date: 2005
Title: Project Photo Control
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20050218
Ending_Date: 20050504
Source_Currentness_Reference: Ground condition
Source_Citation_Abbreviation: CONTROL
Source_Contribution:
Horizontal and vertical control used to establish positions and elevations for reference and correlation purposes and as input to the aerotriangulation process. Control consists of both Airborne GPS to provide camera station positions and photoidentifiable surveyed ground control for groundreference.
Process_Step:
Process_Description:
Source imagery was collected using four cameras (two Wild RC-30 and two Jena LMK), all have 6" focal lengths and a current calibration by USGS. The imagery was processed by HAS Images Inc. in Dayton, OH. Airbone GPS data was processed by Surdex Corporation. Image negatives were scanned at 10-micrometer resolution on Leica DSW Image Scanners and dodge using SurDodge software by Surdex. The scanned images were then used as input, along with Airborne GPS data and camera calibration data in Intergraph's ImageStation Automatic Triangulation (ISAT) for point mensuration. An assessment of the USGS National Elevation Dataset (NED) revealed several areas of insufficient data, at which other DEM sources obtained by Surdex was used. The aero triangulation parameter data, used with the scanned and dodged imagery were orthorectified using the modified elevation models and Surdex orthorectification software. Some orthorectified images were then mosaicked, if necessary, to reduce minor image defects. Radiometric balancing achieved using Inpho's OrthoVista, as necessary, to produce a consistent image tone for DOQQs. Product tiles were then extracted and converted to GeoTIFF format written to hard drive for delivery.
Process_Date: range 20060210 - 20060728

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 1201
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.99997500
Longitude_of_Central_Meridian: -88.333333333
Latitude_of_Projection_Origin: 36.66666667
False_Easting: 300000
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Row and column
Coordinate_Representation:
Abscissa_Resolution: 1.5
Ordinate_Resolution: 1.5
Planar_Distance_Units: U.S. Survey Feet
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.5722210

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
Panchromatic orthoimagery is organized in a single channel. Each pixel is assigned a gray-scale value from 0-255 with 0 representing black and 255 representing white. Areas where data is incomplete due to lack of full image coverage are represented with the numeric value of 0 or 128.
Entity_and_Attribute_Detail_Citation:
U.S. Department of the Interior, U.S. Geological Survey, 1996, Standards for Digital Orthophotos: Reston, VA.

Metadata_Reference_Information:
Metadata_Date: 20060822
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: John Zuzek
Contact_Organization: Science Applications International Corporation (SAIC)
Contact_Position: Site Manager - SAIC Melbourne Office
Contact_Address:
Address_Type: Mailing and physical address
Address: 100 Rialto Place, Suite 200
City: Melbourne
State_or_Province: FL
Postal_Code: 32901
Country: US
Contact_Voice_Telephone: 1-321-751-3235
Contact_Facsimile_Telephone: 1-321-757-7870
Contact_Electronic_Mail_Address: zuzekj@saic.com
Hours_of_Service: Monday through Friday 8:00 AM to 5:00 PM (EasternTime)
Contact_Instructions: The above is the contact information for SAIC in Melbourne, FL
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

Illinois Natural Resources Geospatial Data Clearinghouse

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