USGS High Resolution Orthoimage, Boston, MA

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2003
Title: USGS High Resolution Orthoimage, Boston, MA
Geospatial_Data_Presentation_Form: remote-sensing image
Publication_Information:
Publication_Place: Sioux Falls, SD
Publisher: U.S. Geological Survey
Description:
Abstract:
USGS High Resolution Orthoimage. Ortho images consist of a tiff file format, one file for each 1500 x 1500 meter block on the ground. Pixel size represents 0.3 meters on the ground, images are 73 Mb per color tif image. No attributes available. These tif images are a subset of orthorectified aerial images (orthoimages). An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map. For this dataset, the natural color orthoimages were produced at 0.3-meter pixel resolution (approximately 1-foot). The design accuracy is estimated not to exceed 3-meter diagonal RMSE (2.12m RMSE in X or Y). The projected coordinate system is UTM, with a NAD83 datum. There is no image overlap between adjacent tif image files. The naming convention is based on the U.S. National Grid (USNG), taking the coordinates of the SW corner of the orthoimage.
Purpose:
These data have been created as a result of the need for having geospatial data immediately available and easily accessible in order to enhance the capability of Federal, State, and local emergency responders, as well as plan for homeland security efforts.
Supplemental_Information:
Spatial-specific information not available
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 200104
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate:-71.1268257
East_Bounding_Coordinate:-71.11159144
North_Bounding_Coordinate:42.38079812
South_Bounding_Coordinate:42.36659586
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: 0.3 meter orthoimage
Theme_Keyword: rectified photograph
Theme_Keyword: rectified image
Theme_Keyword: natural color orthoimage
Theme_Keyword: orthoimage
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 5-2, Washington, D.C., National Institute of Standards and Technology
Place_Keyword: MA
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Boston
Access_Constraints: none
Use_Constraints:
None. Acknowledgment of the U.S. Geological Survey would be appreciated for products derived from these data.
Native_Data_Set_Environment: ERDAS Imagine 8.5, Windows 2000
Data_Quality_Information:
Logical_Consistency_Report:
This orthoimage was subset from a mosaic of the tiles provided by the State of Massachusetts MassGIS. Seamlines were not 100% visually inspected, but those inspected had no missing data along the edges.
Completeness_Report:
All data delivered from MassGIS are incorporated into the new 1500 x 1500 meter images. Source imagery is cloud free. Photography was flown during leaf-off in deciduous vegetation regions. 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 zero (black).
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The orthophotos for this project were produced within the horizontal accuracy of the National Map Accuracy Standards and is less than +/- 5 feet.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Boston Area, Mass
Publication_Date: 200204
Title: 2702
Geospatial_Data_Presentation_Form: remote sensing image
Source_Scale_Denominator: 9114
Type_of_Source_Media: stable-base material
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 200203
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Photo1
Source_Contribution: Source imagery for tile production.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Boston Area, Mass
Publication_Date: 200204
Title: 2703
Geospatial_Data_Presentation_Form: remote sensing image
Source_Scale_Denominator: 9114
Type_of_Source_Media: stable-base material
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 200203
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Photo2
Source_Contribution: Source imagery for tile production.
Process_Step:
Process_Description:
The processing of the photos was conducted by two firms. Intermap Technologies of Englewood, Colorado and Ottawa and Calgary, Canada processed the mainland portion of the Commonwealth east of the 165000-meter line (in MA State Plane coordinates) and Chas. H. Sells, Inc. of Charlton, MA processed the remaining area west of this line (approximately 72 degrees longitude). These vendors provided scanning, softcopy aerial triangulation, orthorectification, image mosaicking and quality control.
Process_Date: 2001
Process_Step:
Process_Description:
This image is a subset from a mosaicked image of Boston, Mass. The mosaic was created by mosaicking 8000 x 8000 pixel images together, which were provided by MassGIS. The original state plane projection was reprojected to UTM Zone 18.
Process_Date: 200307
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: raster
Raster_Object_Information:
Raster_Object_Type: pixel
Row_Count: 5000
Column_Count: 5000
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 18
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -75.0000
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 0.3
Ordinate_Resolution: 0.3
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
For natural color orthoimagery from file, a digital number from 0 to 255 is assigned to each pixel in each display band in a three-band image represented by red, green, and blue (RGB). Areas where the rectification process is incomplete because of incomplete data (that is, lack of elevation data, gaps) 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.
Metadata_Reference_Information:
Metadata_Date: 20030730
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USGS
Contact_Address:
Address_Type: mailing
Address: EROS Data Center
City: Sioux Falls
State_or_Province: SD
Postal_Code: 57198-0001
Country: US
Contact_Voice_Telephone: 1-605-594-6151
Contact_TDD/TTY_Telephone: 1-605-594-6933
Contact_Facsimile_Telephone: 1-605-594-6589
Contact_Electronic_Mail_Address: custserv@usgs.gov
Hours_of_Service: Monday through Friday 8:00 AM to 4:00 PM (Central Time)
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Generated by mp version 2.8.6 on Tue Aug 09 07:47:17 2005