Maine Imagery Regional Midcoast 2009

Identification Information:
Citation Information:
Publication Date: 20181022
Title: Maine Imagery Regional Midcoast 2009
Online Linkage:
Abstract: This data set consists of 0.3-meter pixel resolution (approximately 1-foot), natural color orthoimages covering the urban area footprint. 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. The design accuracy is estimated not to exceed 3-meter diagonal RMSE (2.12m RMSE in X or Y). Each orthoimage provides imagery over a 1500-meter by 1500-meter block on the ground. There is no image overlap between adjacent files. The projected coordinate system is UTM with a NAD83 datum. The naming convention is based on the U. S. National Grid (USNG), taking the coordinates of the SW corner of the orthoimage. Task Order Number G09PD01896. USGS Contract Number 07CRCN0014. Nominal Acquisition Altitude (AGL) was 9600'. The geoid used to reduce satellite derived elevations to orthometric heights was Geoid 03. GPS coordinates are referenced to NAD83 Universal Transverse Mercator Zone 19. The maximum differential baseline length is 69373.00 meters. The mean baseline length is 25668.18 meters. Camera sensors calibration reports are included in the project report. Calibration flights are flown regularly. Natural color orthoimagery is organized in three color bands or channels which represent the red, green, and blue (RGB) 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.
Purpose: Natural Color orthoimagery for Casco Bay Region of southern Maine, including portions of Cumberland, York, Androscoggin and Sagadahoc Counties, 2009
Progress: Complete
Maintenance and Update Frequency: None planned
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -70.5723
East Bounding Coordinate: -69.9791
North Bounding Coordinate: 44.0375
South Bounding Coordinate: 43.4163
Theme Keyword Thesaurus: ISO 19115 Topic Categories
Theme Keyword: imageryBaseMapsEarthCover
Place Keyword Thesaurus: None
Place Keyword: Maine
Temporal Keyword Thesaurus: None
Temporal Keyword: 2009
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 Organization Primary:
Contact Organization: Maine GeoLibrary
Contact Position: GIS Coordinaotr
Contact Address:
Address Type: unknown
Address: 51 Commerce Dr 3rd floor
City: Augusta
State or Province: ME
Postal Code: 04330u
Country: US
Contact Voice Telephone: 207-624-7700
Contact Electronic Mail Address:
Data Set Credit: Maine GeoLibrary
Metadata Reference Information:
Metadata Date: 20181022
Metadata Contact:
Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time