2012 West Metro, Oregon 4-Band 8 Bit Imagery

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Oregon Lidar Consortium
Publication_Date: 20171004
Title: 2012 West Metro, Oregon 4-Band 8 Bit Imagery
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Charleston, SC
Publisher: NOAA's Ocean Service, Office for Coastal Management (OCM)
Online_Linkage: https://coast.noaa.gov/dataregistry
Online_Linkage:
https://coast.noaa.gov/htdata/raster3/imagery/WestMetroOR_2012_8394
Online_Linkage:
https://coast.noaa.gov/dataviewer/#/imagery/search/where:ID=8394
Description:
Abstract:
These data are LiDAR orthorectified aerial photographs (8-bit GeoTIFF format) within the Oregon Lidar Consortium West Metro project area. The imagery coverage is extended a minimum of beyond the project AOI. A GSD (Ground Sample Distance) resolution of 3 inch was used for each four-band color pixel. QSI recommends viewing the orthoimagery in ESRI ArcMap software using a raster catalog. For best results, stretch type should be set to 'None' and Gamma Stretch should not be applied (Layer Properties -> Symbology Tab). The circuit is projected in OGIC. Units are in International feet.
Purpose:
This dataset provides high resolution orthoimagery for the Oregon Lidar Consortium West Metro study area.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20130102
Ending_Date: 20130103
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -123.209
East_Bounding_Coordinate: -122.689
North_Bounding_Coordinate: 45.605
South_Bounding_Coordinate: 45.376
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: imageryBaseMapsEarthCover
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Ortho
Theme_Keyword: Digital Orthophoto
Theme_Keyword: Imagery
Theme_Keyword: Color Infrared
Theme_Keyword: NIR
Theme_Keyword: CIR
Theme_Keyword: aerial photographs
Place:
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: United States
Place_Keyword: Oregon
Place_Keyword: OR
Place_Keyword: Washington County
Place_Keyword: Multnomah County
Place_Keyword: Clackamas County
Place_Keyword: West Metro
Place_Keyword: Beaverton
Place_Keyword: Forest Grove
Place_Keyword: Hillsboro
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: January
Temporal_Keyword: 2013
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Oregon Lidar Consortium
Contact_Position: Data Production Manager
Contact_Address:
Address_Type: mailing and physical
Address: 800 NE Oregon St., Suite 965
City: Portland
State_or_Province: OR
Postal_Code: 97232
Country: US
Contact_Voice_Telephone: 971-673-1557
Contact_Electronic_Mail_Address: jacob.edwards@dogami.state.or.us
Hours_of_Service: 8 am - 5 pm Monday through Friday
Native_Data_Set_Environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.0.3035
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: These data are not attributed.
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: None
Attribute_Accuracy_Explanation: These data are not attributed.
Logical_Consistency_Report:
The data represented were acquired under a contract with Oregon Lidar Consortium. Information regarding the use of this dataset should be directed to the owner.
Completeness_Report:
This data set covers the spatial extent of true color imagery data obtained during this survey.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
To assess the spatial accuracy of the orthophotographs, they were compared against check points identified from the LiDAR intensity images. The checkpoints were distributed evenly across the total acquired area, and were measured on surface features such as painted road lines and fixed high-contrast objects on the ground surface. Horizontal accuracy applies only to the portion of the swath that was orthorectified to the LiDAR-derived DEM. Outside of that, accuracy and radiometry at ortho seams are not guaranteed. The accuracy of the final mosaic was calculated in relation to the LiDAR-derived control points. The orthophoto horizontal accuracy is reported as the root-mean-square error (RMSE). For this data set, the RMSE is 50 cm.
Lineage:
Process_Step:
Process_Description:
All orthophotographs for the West Metro study area have been processed and reviewed for contracted accuracy and completeness. Ortho mosaics were reviewed at a scale of 1:2000 and reviewed against the LiDAR intensities to ensure of no seam artifacts or offsets. Orthophoto data acquisition took place from January 2nd - 3rd, 2013. The survey utilized an UltraCam Eagle digital camera system mounted in a Cessna Caravan. Frames were captured with 70% forward overlap and 50% sidelap to reduce the extent of non-nadir portions of the imagery in an effort to cut down on the presence of building lean. Ground level GPS and aircraft IMU were collected during the flight. Orthophoto Data Processing: 1. Acquired frames were reviewed to ensure complete coverage of the study area and absence of any obscuring features within the frames such as clouds or fog. 2. Image frame radiometry was edited to create the most homogeneous tone/coloration possible across the entire study area, and image frames were exported as 8 bit tiffs. 3. Photo exterior orientations (EO) were computed using POS processing software, based on independent data from the LiDAR system, IMU, and aircraft. 4. Computed exterior orientations were applied to the radiometrically corrected tiffs, and aerial triangulation was performed to align photos to each other as well as to ground control RTK points. 5. Adjusted image frames were draped upon a DEM generated from the LiDAR grounds and orthorectified, generating 8 bit GeoTiffs for each acquired frame. 6. Individually orthorectified GeoTiffs were mosaicked together to form a single seamless image and to correct for any remaining radiometric inconsistencies, and then output as GeoTiffs according to the specified tiling scheme in order to yield manageable file sizes. 7. The output mosaic GeoTiff tiles were compared to the LiDAR intensities in order to assess their accuracy.
Process_Date: 20130212
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 6668
Column_Count: 6667
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: NAD 1983 Oregon Statewide Lambert Feet International
Albers_Conical_Equal_Area:
Standard_Parallel: 43.0
Standard_Parallel: 45.5
Longitude_of_Central_Meridian: -120.5
Latitude_of_Projection_Origin: 41.75
False_Easting: 1312335
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: .25
Ordinate_Resolution: .25
Planar_Distance_Units: international 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
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Office for Coastal Management
Contact_Address:
Address_Type: mailing and physical
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: SC
Postal_Code: 29405-2413
Contact_Voice_Telephone: 843-740-1202
Contact_Electronic_Mail_Address: coastal.info@noaa.gov
Distribution_Liability:
The data represented were acquired under a contract with Oregon Lidar Consortium. Information regarding the use of this dataset should be directed to the owner.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Erdas Imagine (.img) and TIFF / BigTIFF / GeoTIFF (.tif)
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://coast.noaa.gov/dataregistry/
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20171004
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Office for Coastal Management
Contact_Address:
Address_Type: mailing and physical
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: SC
Postal_Code: 29405-2413
Contact_Voice_Telephone: 843-740-1202
Contact_Electronic_Mail_Address: coastal.info@noaa.gov
Metadata_Standard_Name: FGDC CSDGM
Metadata_Standard_Version: FGDC-STD-001-1998
Generated by mp version 2.9.32 on Wed Oct 4 10:08:28 2017