NatcolorXX.img - Ikonos Natural Color Satellite Imagery

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: King County
Publication_Date: 20010430
Title: NatcolorXX.img - Ikonos Natural Color Satellite Imagery
Edition: One
Geospatial_Data_Presentation_Form: Raster Image
Publication_Information:
Publication_Place: King County, WA
Publisher: King County
Other_Citation_Details:
This dataset was collected/created as part of a larger data acquisition effort contracted through Pacific Meridian Corporation, a subsidiary of Space Imaging, Inc. The Ikonos component is one of Space Imaging's Caterra products. Licensing and use restrictions are part of this acquisition contract. Please contact the Point of Contact for licensing restrictions. This data is derived from the 4-band, 11-bit multispectral data that was collected for the same area of interest.
Online_Linkage:
Larger_Work_Citation:
Citation_Information:
Originator: King County
Publication_Date: 2000
Title: ESA/SAO Multispectral Image Acquisition Project
Publication_Information:
Publication_Place: King County, WA
Publisher: King County
Online_Linkage:
Description:
Abstract:
Medium resolution (i.e., 4 meter GSD (ground surface distance)) 3-band natural color satellite imagery collected from August through October 2000. Area of interest is the eastern 'half' of King County, WA. The data is a composite of the blue, green and red bands of the original dataset. The area of coverage is approximately 1253 sq. miles. The imagery has less than 10% cloud cover. The data exhibits some tonal and contrast variation due to spectral and illumination differences as result of the protracted acquisition campaign.
Purpose:
The dataset comprises 30 tiles (files) in IMG format that can be displayed as a seamless mosaic that covers the entire area of interest. The dataset serves primarily as an relatively up-to-date (at time of publication) digital backdrop for GIS and cartographic display. The absolute and horizontal accuracy should be carefully considered when either determining coordinate positions or when applying the data relative to other spatial datasets. The data serves as a compliment to the Emerge dataset and DAIS dataset which cover the 'western' portion of the county and Vashon Island area, respectively. These three datasets provide medium to high resolution imagery for the entire county current to late 2000.
Supplemental_Information:
The images were created combining only the three visible spectrum bands of the original dataset. Users requiring the full band depth imagery are referred to the metadata for the multispectral version of the data, ms11XX.img. The original TIFF file format was not compatible with ArcView without the Image Analyst extension, therefore the data was converted to IMG format which is supported by ArcView with the standard Imagine Viewing extension. The imagery can be viewed as individual images per tile, or as a psuedo-mosaic by using the associated image catalog dbase file, ikonos_natimg.dbf. Each tile is approximately 57 sq. miles in size, with a file size of 66 mb with rrd support file. The overall dataset size is approximately 1.9 gb. The tiling scheme through which the data is provided is a regular grid imposed on an irregular overal image extent. Therefore in the border tiles the image extent is less, sometimes considerably so, than the tile polygon extent.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20000802
Ending_Date: 20011004
Currentness_Reference: acquisition date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -121.8652
East_Bounding_Coordinate: -121.0476
North_Bounding_Coordinate: 47.7886
South_Bounding_Coordinate: 47.0162
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Space Imaging
Theme_Keyword: Caterra
Theme_Keyword: satellite imagery
Theme_Keyword: color
Theme_Keyword: natural color
Theme_Keyword: Ikonos
Theme_Keyword: Ikonos2
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: King County
Place_Keyword: Washington
Place_Keyword: Pacific Northwest
Place_Keyword: Pacific NW
Access_Constraints:
Online access is restricted to King County authenticated users
Use_Constraints:
King County digital data may not be reproduced or redistributed in any form or by any means without the express written authorization of the King County Department of Information and Administrative Services. Specific constraints apply per the licensing agreement with Space Imaging. This dataset does not provide sufficient horizontal accuracy for parcel-level use. It is appropriate only for subwatershed and watershed- level analyses.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: King County
Contact_Person: Michael Leathers
Contact_Position: GIS Database Administrator
Contact_Address:
Address_Type: mailing and physical address
Address: 201 S Jackson St, Ste 700
City: Seattle
State_or_Province: WA
Postal_Code: 98104
Country: USA
Contact_Voice_Telephone: 206-296-3775
Contact_Facsimile_Telephone: 206-296-3749
Contact_Electronic_Mail_Address: mike.leathers@kingcounty.gov
Hours_of_Service: 8:00-4:30 PST M-F
Native_Data_Set_Environment:
ArcView 3.2a, ArcInfo 7.x \\wildfire\plibrary2\images\ikonos\nat\natcolorXX.img
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: None
Logical_Consistency_Report: None
Completeness_Report:
The imagery covers the eastern 'half' of King County, approximately the area east of the Range 07/08 border to the eastern King County county line. The exception is an approximate 32 sq. mile area in the far northeast portion of the county that abuts the eastern county line and the northern county line. This irregular area is approximately 14 miles long by 3.5 miles wide. Imagery was captured for this area in November 2000 after a fairly significant snowfall, thus the ground is largely snow covered. On the west the imagery abuts the Emerge component of the image acquisition project and overlaps the Emerge data along its match line by a minimum of 0.3 miles to a maximum of 0.6 miles. In the area of the cities of North Bend and Snoqualamie, this imagery is coincident with the Emerge imagery in an overlap area of approximately 77 sq. miles. Along the southern, eastern and northern county line boundaries, the imagery extends beyond the county line in variable amounts. At minimum it extends approximately 0.4 miles, at maximum - 3.5 miles with an average overshoot of approximately 0.6 miles.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The raw imagery was georectified by the vendor using available 10 m DEM supplemented with limited GPS ground control. After delivery of the images, in-house horizontal accuracy analysis indicated that the data met the contract specification for Space Imaging's MAP product - NMAS 1:24000 (CE90 of 12.2 m (40 ft)). Review of the horizontal accuracy comparing 13 known GCP indicates that the error budget ranges from approximately 4 meters to slightly over 12 meters. For these 13 points this produces a RMSE of 8.2 meters. The error appears to be skewed in that the imagery is generally shifted east of the control point. The amount of error does not seem to trend much though it appears slightly larger in the southwest portion of the project area. However the number and distribution of control points does not provide sufficient nor equably distributed coverage to make a definative determination. The accuracy analysis was done using the 1 meter panchromatic data that was acquired simultaneously with the chromatic bands. The ground control targets are visible on the 1 meter data whereas they are not sufficiently recognizable on the 4 meter (color) data. Within the limits of the resolution of the 4 meter data, the registration between the panchromatic and the color data appears coincident. See <http://www5.kingcounty.gov/sdc/horiz_accuracy.htm>
Vertical_Positional_Accuracy:
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Publication_Date:
Edition:
Geospatial_Data_Presentation_Form: image
Publication_Information:
Publication_Place:
Publisher:
Other_Citation_Details:
Online_Linkage:
Larger_Work_Citation:
Citation_Information:
Originator:
Publication_Date:
Title:
Publication_Information:
Publication_Place:
Publisher:
Online_Linkage:
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Process_Step:
Process_Description:
The images were received from the vendor on CD-ROM as 4 separate chromatic files/image panel in 11 bit TIFF format. Files were named by product order number, source image number and tile position, e.g. po_PPPPP_bnd_SSSXXYY.tif where PPPPP is the order number, bnd is the three letter band abbreviation (red,blu,grn,nir), SSS is the source image number, and XXYY is the x,y tile position of the image (i.e., po_60094_red_0000001.tif). The images exhibited strong tonal and spectral variation between the satellite swath panels. To accomodate for this, the images were read into ERDAS where a histogram matching routine was applied. The rebalanced images were then converted to ArcInfo grids to allow for reprojection.
Source_Used_Citation_Abbreviation: po_600094_red_0000001.tif
Process_Date: 20010315
Source_Produced_Citation_Abbreviation: green94_1
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ken Rauscher
Contact_Organization: King County Department of Natural Resources
Contact_Position: GIS Analyst, Water and Lands Resources Division
Contact_Address:
Address_Type: mailing and physical address
Address: 201 S. Jackson St, Ste 700
City: Seattle
State_or_Province: WA
Postal_Code: 98104
Country: USA
Contact_Voice_Telephone: 206-2961922
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: ken.rauscher@kingcounty.gov
Hours_of_Service: 8:00-4:00 PST M-F
Process_Step:
Process_Description:
The images were received in UTM Zone 10 NAD 83 projection. King County's standard projection is WA State Plane North, HPGN Datum. The grids from the previous step were processed to convert (remove) the zero values within the grid. This was done to remove the areas of zero values around the edges of each panel which would mask areas of adjacent panels during a merge operation. All the edited panels of each respective band were merged in ArcInfo and then the merged grid was reprojected to the King County standard.
Source_Used_Citation_Abbreviation: po_600094_red_0000001.tif
Process_Date: 20010315
Source_Produced_Citation_Abbreviation: merge_grn
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ken Rauscher
Contact_Organization: King County Department of Natural Resources
Contact_Position: GIS Analyst, Water and Lands Resources Division
Contact_Address:
Address_Type: mailing and physical address
Address: 201 S. Jackson St, Ste 700
City: Seattle
State_or_Province: WA
Postal_Code: 98104
Country: USA
Contact_Voice_Telephone: 206-2961922
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: ken.rauscher@kingcounty.gov
Hours_of_Service: 8:00-4:00 PST M-F
Process_Step:
Process_Description:
To provide the data as a seamless mosaic in equal-sized tiles, a new tile scheme was created in ArcInfo using the generate command with the fishnet option. The merged grids of each band were clipped to the polygons of the tiling scheme using the gridclip command in ArcInfo. A 250 foot buffer was applied during the clipping command so that any tile has marginal overlap with its neighbor. The clipping process resulted in three separate files (one for each band for each tile). For each tile the three bands were stacked and converted to Imagine format in ArcInfo.
Source_Used_Citation_Abbreviation: merge_grn
Process_Date: 20010315
Source_Produced_Citation_Abbreviation: natcolor01.img
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ken Rauscher
Contact_Organization: King County Department of Natural Resources
Contact_Position: GIS Analyst, Water and Lands Resources Division
Contact_Address:
Address_Type: mailing and physical address
Address: 201 S. Jackson St, Ste 700
City: Seattle
State_or_Province: WA
Postal_Code: 98104
Country: USA
Contact_Voice_Telephone: 206-2961922
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: ken.rauscher@kingcounty.gov
Hours_of_Service: 8:00-4:00 PST M-F
Process_Step:
Process_Description:
The resulting natural color image tiles still exhibited tonal variation as most tiles incorporated a portion of more than one of the original satellite swath panels. ArcView Image Analyst was employed to adjust the brightness and contrast of individual tiles to produce a final natural color image product that accomodated this variation as much as possible.
Source_Used_Citation_Abbreviation: natcolor01.img
Process_Date: 20010501
Source_Produced_Citation_Abbreviation: natcolor01.img
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ken Rauscher
Contact_Organization: King County Department of Natural Resources
Contact_Position: GIS Analyst, Water and Lands Resources Division
Contact_Address:
Address_Type: mailing and physical address
Address: 201 S. Jackson St, Ste 700
City: Seattle
State_or_Province: WA
Postal_Code: 98104
Country: USA
Contact_Voice_Telephone: 206-2961922
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: ken.rauscher@kingcounty.gov
Hours_of_Service: 8:00-4:00 PST M-F
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 3088 (represetative)
Column_Count: 3087 (representative)
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: West Virginia, North
Lambert_Conformal_Conic:
Standard_Parallel: 39.000000
Standard_Parallel: 40.250000
Longitude_of_Central_Meridian: -79.500000
Latitude_of_Projection_Origin: 38.500000
False_Easting: 1968499.999800
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Row and column
Coordinate_Representation:
Planar_Distance_Units: Feet
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: GRS 80
Semi-major_Axis: 20925604.4720406
Denominator_of_Flattening_Ratio: 298.26
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The imagery are stored as raster IMG format files. They have not attribute tables. Some collection and geometry parameters specific to the original image collection is stored in the spatial index to the this original geometry, idxpikoo.shp. Attributes particular to the spectral bands and other collection parameters are not included here as this version of the dataset is primarily for natural color viewing and cartographic production. These details can be found in the metadata for the full multispectral version of this Ikonos dataset.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: King County
Contact_Person: Cheryl Wilder
Contact_Position:
Contact_Address:
Address_Type: mailing and physical address
Address: 700 5th Ave, Ste 2300
City: Seattle
State_or_Province: WA
Postal_Code: 98104
Country: USA
Contact_Voice_Telephone: 206-263-5220
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: cheryl.wilder@kingcounty.gov
Hours_of_Service: 8:00-5:00 PST M-F
Resource_Description:
natcolorXX.img where XX references a tile_id linked to a single polygon location in idxpikon.shp index scheme.
Distribution_Liability:
The King County Department of Information and Administrative Services disclaims any warranty of use of any digital product beyond that which it was designed.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: IMG imagine format with igw world file and rrd pyramid file
Digital_Transfer_Option:
Offline_Option:
Offline_Media: CD-ROM
Metadata_Reference_Information:
Metadata_Date: 20010504
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: King County Department of Natural Resources
Contact_Person: Michael Leathers
Contact_Position: GIS Database Administrator
Contact_Address:
Address_Type: Mailing and physical address
Address: 201 S. Jackson St, Ste 700
City: Seattle
State_or_Province: WA
Postal_Code: 98104
Country: USA
Contact_Voice_Telephone: 206-296-3775
Contact_Facsimile_Telephone: 206-296-3749
Contact_Electronic_Mail_Address: mike.leathers@kingcounty.gov
Hours_of_Service: 8:00-4:30 PST M-F
Metadata_Standard_Name: FGDC CSDGM
Metadata_Standard_Version: FGDC-STD-001-1998
City: Seattle
Country: US
City: Seattle
Country: US
City: Seattle
Country: US
City: Seattle
Country: US
City: Seattle
Country: US
City: Seattle
Country: US
City: Seattle
Country: US
Generated by mp version 2.9.6 on Wed Apr 10 12:31:50 2013