2015 Western Washington Regional Orthophotography - 4-band (RGBIr) with 2 Foot Pixel Resolution

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Bret Hazell, GeoTerra, Inc., President
Publication_Date: 20160601
Title:
2015 Western Washington Regional Orthophotography - 4-band (RGBIr) with 2 Foot Pixel Resolution
Geospatial_Data_Presentation_Form: raster digital data
Description:
Abstract:
This data set contains 2 Foot, 4-band (RGBIr), 16-bit/band color orthophotography that covers a large and mostly contiguous urban area in the Puget Sound area of western Washington. An orthophotograph is an aerial photograph that is geometrically corrected using a 3D terrain surface so that the scale is uniform and the image lacks distortion, allowing for highly accurate horizontal measurement of most ground-level features.Over 1,200 square miles of digital aerial imagery suitable for 2 foot orthophotography was acquired by GeoTerra, Inc. in the spring of 2015 for the purpose of updating regional base mapping data. The regional project was a collaborative effort between multiple agencies primarily within the Puget Sound region. King County oversaw the project and acted as lead manager for the effort on behalf of 88 participants. The aerial imagery was acquired using multiple, large-format digital mapping cameras. Overlapping stereo imagery was aerially-triangulated into large block adjustments using new and existing surveyed control. Existing terrain data was updated, or in some areas newly acquired, and used for rectifying the aerial imagery into digital orthophoto mosaics. These ortho image files are in a 3000' x 3000' contiguous, non-overlapping tile structure and are available in uncompressed GeoTIFF format. Each are projected to NAD 83/91(HARN), Western Washington State Plane North Zone, US Feet.
Purpose:
This data set was produced to provide (2 ft) pixel resolution, 16-bit depth, RGBIr orthophotography for the 2015 Western Washington Regional Aerial update, a multi-agency collaborative project.
Supplemental_Information:
<http://www5.kingcounty.gov/sdc/addl_doc/2015AerialsProjectReports.htm>
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20150326
Ending_Date: 20150607
Currentness_Reference:
2 foot (2') pixel resolution orthoimagery for Western Washington, including all or parts of King, Snohomish, Kitsap, and Pierce Counties
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -122.564288
East_Bounding_Coordinate: -121.542320
North_Bounding_Coordinate: 47.800065
South_Bounding_Coordinate: 47.110619
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: 4-band orthophotography
Theme_Keyword: orthos
Theme_Keyword: orthophotography
Theme_Keyword: aerial imagery
Theme_Keyword: RGBIr orthos
Theme_Keyword: 16-bit
Theme_Keyword: Color infrared
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: imageryBaseMapsEarthCover
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: King County
Place_Keyword: Washington
Place_Keyword: WA
Place_Keyword: Pierce County
Place_Keyword: Snohomish County
Place_Keyword: US
Place_Keyword: Kitsap County
Place_Keyword: Skagit County
Stratum:
Stratum_Keyword_Thesaurus: None
Stratum_Keyword: land
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: Spring
Temporal_Keyword: leaf-off
Temporal_Keyword: 2015
Access_Constraints:
Access Constraints: Access to the digital files for the data from this project is limited to those participants who are listed in the contract between the county and GeoTerra, Inc. These participants signed a funding agreement with the county and paid a fee for the data they received. All participants are allowed to provide the data on public-facing websites to meet their internal business requirements. However, these public-facing sites cannot allow for download of the original data.
Use_Constraints:
Use Constraints: This orthophotographic data was acquired and produced by GeoTerra, Inc for the 2015 Washington Regional Aerials Update per contract agreement with King County, Washington for aerial image acquisition, orthophotographic processing and delivery. Data is only to be used by the county and participants specified in the 2015 contract which states in the Licensing Terms that the County and participants: 1) may distribute the data to all parties with whom they are currently contracted, and 2) may distribute the data to private individuals for non-commercial purposes only, Exceptions to this Licensing Term may exclude those 2015 participants that purchased full ownership of their respective data areas. Full ownership of all data acquired and produced for the 2015 contract is retained by GeoTerra.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GeoTerra, Inc.
Contact_Person: Bruce Bergman
Contact_Position: Flight Coordinator
Contact_Address:
Address_Type: physical
Address: 7816 SE 13th Ave.
City: Portland
State_or_Province: OR
Postal_Code: 97202
Country: US
Contact_Voice_Telephone: 503-239-6010
Contact_Electronic_Mail_Address: bbergman@geoterra.us
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GeoTerra, Inc.
Contact_Person: Bret Hazell
Contact_Position: President / Senior Project Manager
Contact_Address:
Address_Type: physical
Address: 3410 West 11th Ave.
City: Eugene
State_or_Province: OR
Postal_Code: 97402
Country: US
Contact_Voice_Telephone: 541-343-8877
Contact_Electronic_Mail_Address: bhazell@geoterra.us
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GeoTerra, Inc
Contact_Person: Leanne Mitchell
Contact_Position: Project Coordinator
Contact_Address:
Address_Type: physical
Address: 7816 SE 13th Ave
City: Portland
State_or_Province: OR
Postal_Code: 97202
Country: US
Contact_Voice_Telephone: 503-239-6010
Contact_Electronic_Mail_Address: lmitchell@Geoterra.us
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GeoTerra, Inc.
Contact_Person: Amy Perdue
Contact_Position: Orthophoto Department Manager
Contact_Address:
Address_Type: physical
Address: 3410 West 11th. Ave.
City: Eugene
State_or_Province: Oregon
Postal_Code: 97402
Country: US
Contact_Voice_Telephone: 541-343-8877
Contact_Electronic_Mail_Address: aperdue@geoterra.us
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GeoTerra, Inc.
Contact_Person: Leanne Mitchell
Contact_Position: Project Coordinator
Contact_Address:
Address_Type: physical
Address: 3410 West 11th Avenue
City: Eugene
State_or_Province: OR
Postal_Code: 97402
Country: US
Contact_Voice_Telephone: 541-343-8877
Contact_Electronic_Mail_Address: lmitchell@geoterra.us
Data_Set_Credit: GeoTerra, Inc
Native_Data_Set_Environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.0.4322

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: Raster data has no attribute table
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Explanation: NA
Logical_Consistency_Report:
Tests for logical consistency indicate that image positions are consistent with earth coordinates covering the same area
Completeness_Report:
The data is complete and without gaps or zero pixel data for 100% of the required project area of 3-inch orthophotography.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Measurement of the horizontal (X and Y) accuracy of the rectified ortho imagery. Accuracy reports as well as other reports for the 2015 Aerials Project can be found at:

<http://www5.kingcounty.gov/sdc/addl_doc/2015AerialsProjectReports.htm>

Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Explanation:
Horziontal accuracy of photo-identifiable features in the 3-inch orthophotography were measured and then compared with actual surveyed ground coordinates (QC checkpoints) to calculate statistical accuracy of the project. A 3rd party QC DAT Vendor (Miller Creek Aerial Mapping) peformed the QC analysis and determined that the 2015 project orthophotography meets or exceeds the horizontal acceptance criteria of RMSEr < 0.707 ft with a 95% confidence interval of < 1.224 ft.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Publication_Date: 20150101
Title: aoieaa.shp
Type_of_Source_Media: None
Source_Citation_Abbreviation: aoieaa.shp
Source_Contribution:
Enhanced Aquisition Areas (EAA) were provided by King County and participants in shp format to assist in the identification of areas with excessive building height and density. These areas were used by GeoTerra duringflight planning and acquisition to enhance the number and density of photos as well as to capture these areas during maximum sun angles windows to help ensure minimal buidling lean and shadows exist in the final imagery.
Source_Information:
Source_Citation:
Citation_Information:
Publication_Date: 20150101
Title: idxp3000.shp
Type_of_Source_Media: None
Source_Citation_Abbreviation: idxp3000.shp
Source_Contribution:
3000' x 3000' tiling scheme in shp file format as provided by the King County technical manager to utilize for final ortho tile delivery.
Source_Information:
Source_Citation:
Citation_Information:
Publication_Date: 20150101
Title: Various
Type_of_Source_Media: None
Source_Citation_Abbreviation: Various
Source_Contribution:
New Survey Control was acquired by GeoTerra as needed to supplement the existing project ground control. All control, new and existing, was utilized to ensure the Aerial Triangulation block adjustment meets required accuracy standards.
Source_Information:
Source_Citation:
Citation_Information:
Publication_Date: 20150101
Title: Various names
Type_of_Source_Media: None
Source_Citation_Abbreviation: Various names
Source_Contribution:
Multiple sources of existing DTM and DEM data as provided by King County and various participants. A large portion of the data was created for the 2012 regional ortho project and was provided to the 2015 contract vendor (GeoTerra) in DWG or DEM LAS format. More recent LiDAR data as acquired for various regional projects was also utilized. All DTM and DEM data was updated in a stereo environment using 2015 stereo imagery. Breaklines were added to bridges and some areas of change where applicable to help "hold the ground" in place during image rectification. Several existing datasets were identified by GeoTerra as not having the accuracy required to meet the 2015 project's 3-inch ortho specifications and were flown by GeoTerra for new LiDAR data in late 2015.
Source_Information:
Source_Citation:
Citation_Information:
Publication_Date: 20150101
Title: Various names
Type_of_Source_Media: None
Source_Citation_Abbreviation: Various names
Source_Contribution:
Existing Survey Control data (in Excel and text format) as used for previous projects that fall within the 2015 procent extent. Control data was utilized in the Aerial Triangulation if still in existance or valid to ensure the resulting imagery was spatially accurate.
Process_Step:
Process_Description:
1. Flight Planning for image acquistion occured in March of 2015 prior to flight. Multiple aerial flight vendors were subcontracted by GeoTerra to help ensure imagery was captured in a timely manner given seasonal weather and sun angle constraints. The project was broken into multiple blocks suitable for concurrent and multi-flight acquistion. All flights were planned and flown to acquire photos with a minimum 60% forward overlap and 30% sidelap. Several areas of the project identifid as Enhanced Aquisition Areas (EAA) were incorporated into the flight plan which were based on the client's requirements for minimal shadows and reduction of lean of elevated strutures. These areas were flown during a two hour window of highest sun angle. EAA with tall buildings were specifically flown so that all photos were acquired with 80% froward overlap and 60% sidelap of imagery to help reduce lean of elevated buildings and structures.
Process_Date: 20150318
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GeoTerra, Inc.
Contact_Person: Bruce Bergman
Contact_Position: Flight Coordinator
Contact_Address:
Address_Type: physical
Address: 7816 SE 13th Ave.
City: Portland
State_or_Province: OR
Postal_Code: 97202
Country: US
Contact_Voice_Telephone: 503-239-6010
Contact_Electronic_Mail_Address: bbergman@geoterra.us
Process_Step:
Process_Description: 2. Airborne GPS processing.
Process_Date: 20150601
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GeoTerra, Inc.
Contact_Person: Shelby Griggs, PLS
Contact_Address:
Address_Type: physical
Address: 3410 West 11th Avenue
City: Eugene
State_or_Province: OR
Postal_Code: 97402
Country: US
Contact_Voice_Telephone: 541-914-1582
Contact_Electronic_Mail_Address: bgriggs@geoterra.us
Process_Step:
Process_Description:
3. Acquisition of 4-band, 16 bit/band, digital aerial imagery at less than 0.225 ft pixel resolution using multiple Vexcel UltraCam aerial mapping cameras (Hawk, X, Xp and Eagle) during leaf-off and high sun-angle conditions. Each flight occured with AGPS and IMU. Enhanced areas of acquisition were acquired at higher image overlap and during a high sun-angle window to minimize buidling lean and shadows in identified dense urban areas. Post-flight, raw images were processed using propietary UltraMap software into full-histogram (unclipped) images in a final *.TIF format.
Process_Date: 20150615
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GeoTerra, Inc.
Contact_Person: Bruce Bergman
Contact_Position: Flight Coordinator
Contact_Address:
Address_Type: physical
Address: 7816 SE 13th Ave.
City: Portland
State_or_Province: OR
Postal_Code: 97202
Country: US
Contact_Voice_Telephone: 503-239-6010
Contact_Electronic_Mail_Address: bbergman@geoterra.us
Process_Step:
Process_Description:
4. Update of the existing Digital Terrain Model (DTM) to use for rectifying the images. Stereo photography, as a product of the aerial triangulation, was used to update the breakline and point data in a 3D stereo environment.
Process_Date: 20160224
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GeoTerra, Inc.
Contact_Person: Leanne Mitchell
Contact_Position: Project Coordinator
Contact_Address:
Address_Type: physical
Address: 3410 West 11th Avenue
City: Eugene
State_or_Province: OR
Postal_Code: 97402
Country: US
Contact_Voice_Telephone: 541-343-8877
Contact_Electronic_Mail_Address: lmitchell@geoterra.us
Process_Step:
Process_Description:
5. The most nadir portion of every photo was identified by creating "seamlines" used to stitch the rectified images together. Seamlines were created using a combination of automatic and manual methods. Inpho's Ortho Master software was utilized to collect or manually adjust the seamlines polygons.
Process_Date: 20160331
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GeoTerra, Inc.
Contact_Person: Amy Perdue
Contact_Position: Orthophoto Department Manager
Contact_Address:
Address_Type: physical
Address: 3410 West 11th. Ave.
City: Eugene
State_or_Province: Oregon
Postal_Code: 97402
Country: US
Contact_Voice_Telephone: 541-343-8877
Contact_Electronic_Mail_Address: aperdue@geoterra.us
Process_Step:
Process_Description:
8. After initial Quality Assessment (QA) of the tiles by GeoTerra, additional QA was performed by Miller Creek Aerials Mapping (MCA). This evaluation was both quantitative and qualitative and was performed for a high percentage of tiles in each production zone, usually 50-75%,or greater, of the tiles. Calls were defined geographically and attributed as to type of issue and signficance. The RGB tiles were also evaluated by affected participants via a ArcGIS Online data portal maintained by GeoTerra. Combined calls, those from MCA and from the participants, were assembled. Review by GeoTerra and MCA, and when needed, by a working group of participants resulted in a final call list of issues that required repair. Upon completion of all fixes, the tiles went through final approval by GeoTerra and MCA prior to being delivered to King County. The county then distributed the data to each participant for their defined area of interest.
Process_Date: 20160401
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Miller Creek Aerials Mapping
Contact_Person: Jimmy Shultz
Contact_Address:
Address_Type: physical
Address: 19550 International Blvd, Ste 203
City: SeaTac
State_or_Province: WA
Postal_Code: 98188
Contact_Voice_Telephone: 26-402-6052
Process_Step:
Process_Description:
6. Rectification and mosaicing of all aerial photos using Inpho OrthoVista software, with the combined input of AT, updated DTM and seamlines.
Process_Date: 20160430
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GeoTerra, Inc.
Contact_Person: Amy Perdue
Contact_Position: Orthophoto Department Manager
Contact_Address:
Address_Type: physical
Address: 3410 West 11th. Ave.
City: Eugene
State_or_Province: Oregon
Postal_Code: 97402
Country: US
Contact_Voice_Telephone: 541-343-8877
Contact_Electronic_Mail_Address: aperdue@geoterra.us
Process_Step:
Process_Description:
7. Aerial Triagulation (AT) of all imagery acquired for 3-inch (0.25') pixel resolution orthos using processed Airborn GPS photo centers and new and existing surveyed ground control.
Process_Date: 20161231
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GeoTerra, Inc.
Contact_Person: Gordon Peet
Contact_Position: Senior Photogrammetrist
Contact_Address:
Address_Type: physical
Address: 3410 West 11th Ave
City: Eugene
State_or_Province: Oregon
Postal_Code: 97402
Country: US
Contact_Voice_Telephone: 541-343-8877
Contact_Electronic_Mail_Address: gpeet@geoterra.us

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 2
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 1
Column_Count: 1

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: NAD 1983 HARN StatePlane Washington North FIPS 4601 Feet
Lambert_Conformal_Conic:
Standard_Parallel: 47.5
Standard_Parallel: 48.73333333333333
Longitude_of_Central_Meridian: -120.8333333333333
Latitude_of_Projection_Origin: 47.0
False_Easting: 1640416.666666667
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.0003280833333333334
Ordinate_Resolution: 0.0003280833333333334
Planar_Distance_Units: foot_us
Geodetic_Model:
Horizontal_Datum_Name: D North American 1983 HARN
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: x_15c200
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: MosaicID
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Overview_Description:
Entity_and_Attribute_Overview: Raster data has no attributes
Entity_and_Attribute_Detail_Citation: GeoTerra, Inc

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GeoTerra, Inc
Contact_Person: Bret Hazell
Contact_Address:
Address_Type: physical
Address: 3410 West 11th Ave
City: Eugene
State_or_Province: OR
Postal_Code: 97402
Country: US
Contact_Voice_Telephone: 541-343-8877
Distribution_Liability:
Distribution Liability: This data was produced under a contract between GeoTerra, Inc and King County. Data may be distributed by the county and the other participants only as specified in the 2015 contract which states the Licensing Terms for the county and the other participants. Licensed participants may distribute the data only to other parties to who they are currently contracted and to private individuals for non-commercial purposes only. Certain participants are exceptions to the licensing terms (i.e., full ownership) and are not restricted in the data's distribution.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: reg_15c200.gdb\reg_15c200

Metadata_Reference_Information:
Metadata_Date: 20160711
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: GeoTerra, Inc.
Contact_Person: Leanne Mitchell
Contact_Position: Project Coordinator
Contact_Address:
Address_Type: physical
Address: 3410 West 11th Avenue
City: Eugene
State_or_Province: OR
Postal_Code: 97402
Country: US
Contact_Voice_Telephone: 541-343-8877
Contact_Electronic_Mail_Address: lmitchell@geoterra.us
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time

Generated by mp version 2.7.17 on Thu Nov 21 08:43:49 2019