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ortho_dmr

FGDC XML
Identification Information
Citation Information
Originator J.W. Sewall Co., Maine Department of Marine Resources (MeDMR), Maine Office of Geographic Information Systems (MEGIS)(comp.)
Publication Date 200610
Title ortho_dmr
Geospatial Data Presentation Form SDE raster digital data
Series Name Maine Coastal Low Tide Ortho-rectified Digital Images (ODI)
Issue Identification 2003-2005
Publication Place Augusta ME
Publisher Maine Office of Geographic Information Systems (MEGIS)
Other Citation Details (MEGIS) ORTHO_DMR consists of 24-bit color aerial photography taken at low tide. These Sewall digital images have a pixel resolution (or ground sample distance) of 0.5 meters, are precision geo-referenced and ortho-rectified and can be used with 1"=200' mapping applications. These photographs were aquired betewwen 2003 and 2005. Please refer to the polygon file DMR_Photograhy_Dates for specific dates..
Online Linkage http://www.maine.gov/geolib/wms.htm
[smcilnkh]  true
Abstract ORTHO_DMR contains high resolution 24-bit color Ortho-rectified Digital Images (ODIs) collected and processed by J. W. Sewall Co. These digital images result from ortho-rectification and mosaicking of digital color aerial photographs. Digital file features include high quality ground-level georeferencing, derived from accurate positioning and geometric corrections, and provide a digital photographic map suitable for applications requiring a 1:2400 National Map Accuracy Standard (NMAS).
Purpose This photography was aquired for eelgrass, oil spill response planning, and other intertidal and shallow subtidal mapping applications.
Time Period of Content
Beginning Date 2003
Ending Date 2005
Currentness Reference ground condition
Status
Progress Complete
Maintenance and Update Frequency Unknown
Bounding Coordinates
West Bounding Coordinate -69.888915
East Bounding Coordinate -68.747333
North Bounding Coordinate 44.625274
South Bounding Coordinate 43.685901
Keywords
Theme aerial photograph, ortho-rectified digital image, ground sample distance 0.5 meters, OTHER SCALES, IMAGERY AND REMOTE SENSING (Maine GIS Thesaurus-Theme)
Place Maine (Maine GIS Thesaurus-Place)
Stratum land surface (GCMD Parameter Keyword)
Access Constraints The seamless presentation is available to Maine GIS users through direct connection to the MEGIS Oracle/ArcSDE database.
Use Constraints There are no licensing limitations.
Contact Organization (MEDMR) Maine Department of Marine Resources
Contact Person Seth Barker
Contact Position GIS Specialist
Address Type mailing address
Address PO Box 8
City West Boothbay Harbor
State or Province ME
Postal Code 04575
Country USA
Contact Voice Telephone (207) 633-9507
Contact Facsimile Telephone (207) 633-9579
Contact Electronic Mail Address seth.barker@maine.gov
Hours of Service Monday through Friday 0800 - 1700 EST
Data Set Credit Credit should always be given to the data source and/or originator when the data is transferred or printed.
Native Data Set Environment Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722
Logical Consistency Report The Coastal Maine Low Water Ortho-rectified Digital Images (ODIs)presented in ORTHO_DMR cover a portion of the Maine coast from Small Point to Eastern Penobscot Bay. The aerial photography was flown beteew 2003 and 2005. The orthoimages produced from the photography have a pixel resolution (or ground sample distance) of 0.5 meters.ORTHO_DMR is available at Maine GIS in a seamless mosaic of .TIFF images stored in Oracle 9i for users of ArcSDE 9.x and ArcIMS. The imagery covers a portion of the Maine coastline. The imagery consists of 3 bands - red, green, and blue.
Completeness Report The Coastal Maine Low Water Ortho-rectified Digital Images were acquired by the Maine Department of Marine Resoures to provide low tide orthophotography for eelgrass mapping, oil spill response planning, and other low tide and shallow subtidal mapping.
Horizontal Positional Accuracy Explanation Digital file features iprovide a digital photographic map suitable for applications requiring a 1:2400 National Map Accuracy Standard (NMAS).
Source Citation Abbreviation MeDMR
Process Description The ArcSDE in Oracle version of ORTHO_DMR is a seamless mosaic of Delorme Ortho-rectified Digital Images (ODIs).Georeference for each tile is computed from accurate ortho-rectification and mosaicking processes. Each tile is given a pixel/ground transformation matrix (with zero-rotation), included in the file georeferencing parameters. UTM or State Plane Coordinate System (SPCS7), North American Datum (NAD83) or NAD27, X and Y coordinates are computed for each tile. Due to the high level of accuracy in the ortho-rectification and georeferencing processes, seam lines are often hardly visible to untrained eyes, thanks to operator-controlled, computer assisted seam line positioning on the final mosaic.
Process Date Not complete
Contact Organization (DELORME) Delorme
Address Type mailing address
Address Two DeLorme Drive, P.O. Box 298
City Yarmouth
State or Province ME
Postal Code 04096
Contact Voice Telephone (800) 561-5105
Contact Facsimile Telephone (207) 846-7051
Contact Electronic Mail Address http://www.delorme.com/companyinfo/contact.htm
Process Description A proprietary software program from Space Imaging was used to re-calculate some pixel values in the images. Pixels in which 1 or 2 of the 3 bands had values of zero were re-calculated to one. If all 3 bands equaled zero than the zero values were left untouched.Before loading into the ArcSDE database, the pixels in the .tiff images were adjusted to each other so that the pixels overlapped, allowing mosaicking. To adjust the pixels, an ESRI program name world_file_adjuster was used.
Process Date 200401
Contact Organization (MEGIS) Maine Office of Geographic Information Systems
Contact Person David Kirouac
Address Type mailing and physical address
Address MEGIS174 SHS
City Augusta
State or Province ME
Postal Code 04330
Country USA
Contact Voice Telephone (207) 215-6936
Contact Electronic Mail Address david.kirouac@maine.gov
Hours of Service 8:00 AM - 4:00 PM
Cloud Cover 0
Direct Spatial Reference Method Raster
Raster Object Type Pixel
Row Count 207930
Column Count 181126
Vertical Count 1
Grid Coordinate System Name 
UTM Zone Number 19
Scale Factor at Central Meridian 0.9996
Longitude of Central Meridian -69
Latitude of Projection Origin 0
False Easting 500000
False Northing 0
Planar Coordinate Encoding Method 
Abscissa Resolution 0.5
Ordinate Resolution 0.5
Horizontal Datum Name North American Datum of 1983
Ellipsoid Name Geodetic Reference System 80
Semi-major Axis 6378137
Denominator of Flattening Ratio 298.257
Altitude Resolution 1.000000
Altitude Encoding Method Explicit elevation coordinate included with horizontal coordinates
Contact Organization Maine Office of Geographic Information Systems
Contact Position GIS Coordinator
Address Type mailing address
Address State House Station 174
City Augusta
State or Province ME
Postal Code 04333-0174
Country USA
Contact Voice Telephone (207) 624-7700
Contact Facsimile Telephone (207) 287-3842
Hours of Service Monday through Friday 0800 - 1700 EST
Resource Description Downloadable Data
Distribution Liability Users must assume responsibility to determine the usability of this data for their purposes.
Format Name WMS
Format Version Number 1.1
Format Specification OpenGIS (OGC) Web Map Service (WMS)
Format Information Content MEGIS has created a web based application for Maine GIS data that adheres to the OpenGIS Consortium (OGC) Web Mapping Specification (WMS 1.1.1) which allows map servers to create and send standard map images over the Web.
[accinstr]  This metadata document contains embedded URLs that can be used to make OGC WMS 1.1.1 compliant map requests of the framework layers in the Maine GeoLibrary.
[smdistty]  1
Fees None
Ordering Instructions http://www.maine.gov/geolib/wms.htm
Metadata Reference Information
Metadata Date 20061205
Metadata Review Date 20100119
Metadata Future Review Date 
Metadata Contact
Contact Organization (MEGIS) Maine Office of Geographic Information Systems
Contact Person GIS Coordinator
Contact Position GIS Coordinator
Address Type mailing address
Address State House Station 174
City Augusta
State or Province ME
Postal Code 04333-0174
Country USA
Contact Voice Telephone 207 624-7700
Contact Facsimile Telephone 207 287-3842
Hours of Service Monday through Friday 0800 - 1700 EST
Metadata Standard Name FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version FGDC-STD-001-1998
Metadata Time Convention local time
Metadata Access Constraints none
Metadata Use Constraints none
Online Linkage http://www.esri.com/metadata/esriprof80.html
Profile Name ESRI Metadata Profile
[smmrexth]  0
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