State of Arkansas

Digital

Tags
Ortho, Arkansas, Arkansas GIS Office, Photography, Orthophotography, Imagery


Summary

Rectified orthoimagery for the Arkansas GIS Office may serve as a basemap for GIS applications.

Description

This metadata record describes the 30cm pixel resolution digital orthoimagery produced for the Arkansas GIS Office by the Sanborn Map Company. The orthoimagery provided is 4-band (R, G, B, NIR), 8-bit per pixel and delivered in section tiles in uncompressed TIFF/TFW, compressed SID/SDW (40:1) and compressed county wide SID mosaics (40:1) formats. The data was collected between January 23, 2017 and February 25, 2017 at an altitude range between 19089 and 20300 feet using an UltraCam Eagle camera. This orthoimagery is published in Universal Transverse Mercator Zone 15N, NAD 83, meters.

Credits

Use limitations

            

This data is meant for use by requested parties. This data cannot be used without express consent.

Extent

Scale Range
Maximum (zoomed in)  1:5,000
Minimum (zoomed out)  1:150,000,000

ArcGIS Metadata 

Topics and Keywords 

Themes or categories of the resource  imageryBaseMapsEarthCover


Content type  Downloadable Data


Place keywords  Arkansas, Arkansas GIS Office

Theme keywords  Ortho, Photography, Orthophotography, Imagery

Citation 

Title State of Arkansas
Publication date 2018-01-09


Edition Final


Presentation formats  digital map
FGDC geospatial presentation format  remote-sensing image


Citation Contacts 

Responsible party
Organization's name Arkansas GIS Office
Contact's role  originator


Resource Details 

Dataset languages  English


Status  completed


Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.1.3549


ArcGIS item properties

Extents 

Extent
Geographic extent
Bounding rectangle
West longitude -94.625
East longitude -89.625
South latitude 33
North latitude 36.5

Extent
Description
State of Arkansas

Temporal extent
Beginning date 2017-01-23
Ending date 2018-01-09

Resource Points of Contact 

Point of contact
Individual's name Shawn Benham
Organization's name Sanborn Map Co., Inc.
Contact's position Project Manager
Contact's role  point of contact


Contact information
Phone
Voice 719-502-1296

Address
Type postal
Delivery point 1935 Jamboree Drive, Suite 100
City Colorado Springs
Administrative area Colorado
Postal code 80920-5358
e-mail addresssbenham@sanborn.com



Resource Maintenance 

Resource maintenance
Update frequency  not planned


Resource Constraints 

Legal constraints
Limitations of use
None

Other constraints
This data may be used by the requested party for stated purposes and should not be re-distributed.

Constraints
Limitations of use
                  

This data is meant for use by requested parties. This data cannot be used without express consent.


Spatial Data Properties 

Georectified Grid
Number of dimensions 2


Axis dimensions properties
Dimension type  row (y-axis)
Dimension size 10000

Axis dimensions properties
Dimension type  column (x-axis)
Dimension size 10000

Cell geometry  area




Spatial Data Content 

Image Description
Percent cloud cover 5


Data Quality 

Scope of quality information
Resource level  dataset




Data quality report - Conceptual consistency
Measure description
Since the ortho images are raster products, the logical consistency is based on how well the images fit between image tiles and between individual photo frames used to produce the ortho mosaics. The images match within four pixels of each other through out the project area.





Data quality report - Completeness omission
Measure description
The ortho image tiles are checked for missing pixels, gaps, overlaps and other anomalies generally associated with digital orthophoto products. Any discrepencies in the ortho tiles are resolved through the use of proprietary and industry editing tools. Once the images are copied to the deliverable media they are further checked for naming, image completeness, and ability to be loaded in ArcMap.





Data quality report - Quantitative attribute accuracy
Measure description
N/A



Quantitative test results
Value N/A


Evaluation method
Attribute accuracy does not apply to orthoimagery.





Data quality report - Absolute external positional accuracy
Dimension horizontal


Measure description
This orthoimagery meets ASPRS Class 1 Accuracy Standards



Quantitative test results
Value 30cm RMSE


Evaluation method
Specification requires that data meet a 120 cm ' RMSE requirement. Points were surveyed and compared to location within the orthophoto and found meet this specification.





Data quality report - Absolute external positional accuracy
Dimension vertical


Measure description
N/A



Quantitative test results
Value 0.0


Evaluation method
Orthoimagery does not have inherent vertical accuracy.





Lineage 

Process step
When the process occurred 2017-02-25
Description
Image acquisition by Sanborn Map Company occurred between January 23, 2017 and February 25, 2017 using a UltraCam Eagle Camera. Imagery and GPS/IMU data is downloaded from disc on the plane to disc on the ground. GPS/IMU mission data is processed together with simultaneously collected ground-based GPS base station data in forward and reverse directions. This precisely determines the aerial camera's position and orientation in the terrain (project) coordinate system and allows for correct orientation of the imagery.



Process contact
Individual's name Shawn Benham
Organization's name Sanborn Map Co., Inc.
Contact's position Project Manager
Contact's role  processor


Contact information
Phone
Voice 719-502-1296

Address
Type both
Delivery point 1935 Jamboree Drive, Suite 100
City Colorado Springs
Administrative area CO
Postal code 80920
Country US
e-mail addresssbenham@sanborn.com

Hours of service
8:00 AM - 5:00 PM M-F





Process step
When the process occurred 2017-03-04
Description
Using the processed GPS/IMU data and correctly oriented imagery, a bundle adjustment is computed (AT).



Process contact
Individual's name Shawn Benham
Organization's name Sanborn Map Co., Inc.
Contact's position Project Manager
Contact's role  processor


Contact information
Phone
Voice 719-502-1296

Address
Type both
Delivery point 1935 Jamboree Drive, Suite 100
City Colorado Springs
Administrative area CO
Postal code 80920
Country US
e-mail addresssbenham@sanborn.com

Hours of service
8:00 AM - 5:00 PM M-F





Process step
When the process occurred 2017-04-30
Description
DEM Review/Updating. The LiDAR surface is reviewed and updated as needed to meet the final orthorectification standards set in this project.



Process contact
Individual's name Shawn Benham
Organization's name Sanborn Map Co., Inc.
Contact's position Project Manager
Contact's role  processor


Contact information
Phone
Voice 719-502-1296

Address
Type both
Delivery point 1935 Jamboree Drive, Suite 100
City Colorado Springs
Administrative area CO
Postal code 80920
Country US
e-mail addresssbenham@sanborn.com

Hours of service
8:00 AM - 5:00 PM M-F





Process step
When the process occurred 2017-10-31
Description
Orthoimagery is rectified using the AT solution and LiDAR. Once rectified, the orthoimagery is colorbalanced to the acceptable parameters established by the customer. Orthoimagery then undergoes manual quality control to check for issues as outlined in the Digital Orthoimagery Acceptance Criteria document. Issues such as warps, smears, misalignments, etc. are corrected using proprietary tools and Adobe PhotoShop. Upon completion of the QC process, the orthos are provided to the client for review in uncompressed TIFF/TFW.



Process contact
Individual's name Shawn Benham
Organization's name Sanborn Map Co., Inc.
Contact's position Project Manager
Contact's role  processor


Contact information
Phone
Voice 719-502-1296

Address
Type both
Delivery point 1935 Jamboree Drive, Suite 100
City Colorado Springs
Administrative area CO
Postal code 80920
Country US
e-mail addresssbenham@sanborn.com

Hours of service
8:00 AM - 5:00 PM M-F





Source data
Description
Geodetic ground control is used to create a digital control file and control report as well as QC check of ortho accuracy. Predefined points within the project area are targeted and photo-identifiable locations are measured. These points along with their precise coordinates are used in the AT process and to check the horizontal accuracy of the resulting orthophotos.



Source citation
Title Ground Control
Alternate titles  CONT
Publication date
Indeterminate date inapplicable


Presentation formats  digital map
FGDC geospatial presentation format  vector digital data


Responsible party
Organization's name Sanborn Map Co., Inc.
Contact's role  originator




Extent of the source data
Description
ground condition

Temporal extent
Date and time 2017-03-04



Source data
Description
Raw Aerial Imagery - UltraCam Eagle Digital Aerial Camera, Sanborn Map Company. Imagery and GPS/IMU data is downloaded from disc on the plane to disc on the ground. GPS/IMU mission data is processed together with simultaneously collected ground-based GPS base station data in forward and reverse directions. This precisely determines the aerial camera's position and orientation in the terrain (project) coordinate system and allows for correct orientation of the imagery.



Source citation
Title Aerial Imagery
Alternate titles  IMG
Publication date
Indeterminate date inapplicable


FGDC geospatial presentation format  Raster data


Responsible party
Organization's name Sanborn Map Co., Inc.
Contact's role  originator




Extent of the source data
Description
ground condition

Temporal extent
Beginning date 2017-01-23
Ending date 2017-02-25



Source data
Description
LiDAR data



Source citation
Title LiDAR
Alternate titles  DEM
Publication date
Indeterminate date inapplicable


FGDC geospatial presentation format  Vector data


Responsible party
Organization's name Sanborn Map Co., Inc.
Contact's role  originator




Extent of the source data
Description
ground condition

Temporal extent
Date and time 2017-04-30



Distribution 

Distributor
Contact information
Individual's name Matthew Delong
Organization's name Arkansas GIS Office
Contact's position Senior GIS Analyst
Contact's role  distributor


Contact information
Phone
Voice 501-682-3710

Address
Type postal
Delivery point 1 Capitol Mall Ste 6D
City Little Rock
Administrative area Arkansas
Postal code 72201
Country US



Available format
Name Digital


Ordering process
Terms and fees n/a

Transfer options
Transfer size 0.135




Fields 

Overview Description
Entity and Attribute Overview
None for Raster Information



Entity and Attribute Detail Citation
None for Raster Information





Metadata Details 

Metadata language English
Metadata character set  utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata  dataset


Last update 2018-01-09


ArcGIS metadata properties
Metadata format ArcGIS 1.0
Standard or profile used to edit metadata ISO19139


Last modified in ArcGIS for the item 2018-01-26 21:40:25



Metadata Contacts 

Metadata contact
Individual's name Shawn Benham
Organization's name Sanborn Map Co., Inc.
Contact's position Project Manager
Contact's role  point of contact


Contact information
Phone
Voice 719-502-1296

Address
Type postal
Delivery point 1935 Jamboree Drive, Suite 100
City Colorado Springs
Administrative area Colorado
Postal code 80920-5358
e-mail addresssbenham@sanborn.com



Metadata Constraints 

Constraints
Limitations of use
This data is meant for use by requested parties. This data cannot be used without express consent.

Thumbnail and Enclosures 

Enclosure
Enclosure type  File
Description of enclosure original metadata
Original metadata document, which was translated yes
Source metadata format fgdc

FGDC Metadata (read-only) 

Identification 

Citation
Citation Information
OriginatorArkansas GIS Office
Publication Date2018-01-09
Title
State of Arkansas
EditionFinal
Geospatial Data Presentation Formremote-sensing image

Description
Abstract
                            This metadata record describes the 30cm pixel resolution digital orthoimagery produced for the Arkansas GIS Office by the Sanborn Map Company. The orthoimagery provided is 4-band (R, G, B, NIR), 8-bit per pixel and delivered in section tiles in uncompressed TIFF/TFW, compressed SID/SDW (40:1) and compressed county wide SID mosaics (40:1) formats. The data was collected between January 23, 2017 and February 25, 2017 at an altitude range between 19089 and 20300 feet using an UltraCam Eagle camera. This orthoimagery is published in Universal Transverse Mercator Zone 15N, NAD 83, meters.
                          
Purpose
                            Rectified orthoimagery for the Arkansas GIS Office may serve as a basemap for GIS applications.
                          
Time Period of Content
Time Period Information
Range of Dates/Times
Beginning Date2017-01-23
Ending Date2018-01-09
Currentness Reference
                            State of Arkansas
                          
Status
ProgressComplete
Maintenance and Update FrequencyNone planned

Spatial Domain
Bounding Coordinates
West Bounding Coordinate-94.625
East Bounding Coordinate-89.625
North Bounding Coordinate36.5
South Bounding Coordinate33.0

Keywords
Theme
Theme KeywordOrtho
Theme KeywordPhotography
Theme KeywordOrthophotography
Theme KeywordImagery

Place
Place Keyword ThesaurusNone
Place KeywordArkansas
Place KeywordArkansas GIS Office

Access Constraints
                        This data may be used by the requested party for stated purposes and should not be re-distributed.
                      
Use Constraints
                        This data is meant for use by requested parties. This data cannot be used without express consent.
                      
Point of Contact
Contact Information
Contact Organization Primary
Contact OrganizationSanborn Map Co., Inc.
Contact PersonShawn Benham
Contact PositionProject Manager
Contact Address
Address Typemailing address
Address1935 Jamboree Drive, Suite 100
CityColorado Springs
State or ProvinceColorado
Postal Code80920-5358

Contact Voice Telephone719-502-1296
Contact Electronic Mail Addresssbenham@sanborn.com

Native Data Set Environment
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.1.3549

Data Quality 

Attribute Accuracy
Attribute Accuracy Report
                            N/A
                          
Quantitative Attribute Accuracy Assessment
Attribute Accuracy ValueN/A
Attribute Accuracy Explanation
                                Attribute accuracy does not apply to orthoimagery.
                              
Logical Consistency Report
                        Since the ortho images are raster products, the logical consistency is based on how well the images fit between image tiles and between individual photo frames used to produce the ortho mosaics. The images match within four pixels of each other through out the project area.
                      
Completeness Report
                        The ortho image tiles are checked for missing pixels, gaps, overlaps and other anomalies generally associated with digital orthophoto products. Any discrepencies in the ortho tiles are resolved through the use of proprietary and industry editing tools. Once the images are copied to the deliverable media they are further checked for naming, image completeness, and ability to be loaded in ArcMap.
                      
Positional Accuracy
Horizontal Positional Accuracy
Horizontal Positional Accuracy Report
                                This orthoimagery meets ASPRS Class 1 Accuracy Standards
                              
Quantitative Horizontal Positional Accuracy Assessment
Horizontal Positional Accuracy Value30cm RMSE
Horizontal Positional Accuracy Explanation
                                    Specification requires that data meet a 120 cm ' RMSE requirement.  Points were surveyed and compared to location within the orthophoto and found meet this specification.
                                  
Vertical Positional Accuracy
Vertical Positional Accuracy Report
                                N/A
                              
Quantitative Vertical Positional Accuracy Assessment
Vertical Positional Accuracy Value0.0
Vertical Positional Accuracy Explanation
                                    Orthoimagery does not have inherent vertical accuracy.
                                  
Lineage
Source Information
Source Citation
Citation Information
OriginatorSanborn Map Co., Inc.
Publication DateUnpublished Material
Title
Aerial Imagery
Geospatial Data Presentation FormRaster data

Type of Source MediaUnknown
Source Time Period of Content
Time Period Information
Range of Dates/Times
Beginning Date2017-01-23
Ending Date2017-02-25
Source Currentness Reference
ground condition
Source Citation Abbreviation
IMG
Source Contribution
                                Raw Aerial Imagery - UltraCam Eagle Digital Aerial Camera, Sanborn Map Company.  Imagery and GPS/IMU data is downloaded from disc on the plane to disc on the ground. GPS/IMU mission data is processed together with simultaneously collected ground-based GPS base station data in forward and reverse directions. This precisely determines the aerial camera's position and orientation in the terrain (project) coordinate system and allows for correct orientation of the imagery.
                              
Source Information
Source Citation
Citation Information
OriginatorSanborn Map Co., Inc.
Publication DateUnpublished Material
Title
LiDAR
Geospatial Data Presentation FormVector data

Type of Source MediaUnknown
Source Time Period of Content
Time Period Information
Single Date/Time
Calendar Date2017-04-30
Source Currentness Reference
ground condition
Source Citation Abbreviation
DEM
Source Contribution
                                LiDAR data
                              
Source Information
Source Citation
Citation Information
OriginatorSanborn Map Co., Inc.
Publication DateUnpublished Material
Title
Ground Control
Geospatial Data Presentation Formvector digital data

Type of Source MediaUnknown
Source Time Period of Content
Time Period Information
Single Date/Time
Calendar Date2017-03-04
Source Currentness Reference
ground condition
Source Citation Abbreviation
CONT
Source Contribution
                                Geodetic ground control is used to create a digital control file and control report as well as QC check of ortho accuracy. Predefined points within the project area are targeted and photo-identifiable locations are measured. These points along with their precise coordinates are used in the AT process and to check the horizontal accuracy of the resulting orthophotos.
                              
Process Step
Process Description
                                Image acquisition by Sanborn Map Company occurred between January 23, 2017 and February 25, 2017 using a UltraCam Eagle Camera.  Imagery and GPS/IMU data is downloaded from disc on the plane to disc on the ground. GPS/IMU mission data is processed together with simultaneously collected ground-based GPS base station data in forward and reverse directions. This precisely determines the aerial camera's position and orientation in the terrain (project) coordinate system and allows for correct orientation of the imagery.
                              
Process Date2017-02-25


Process Contact
Contact Information
Contact Organization Primary
Contact OrganizationSanborn Map Co., Inc.
Contact PersonShawn Benham
Contact PositionProject Manager
Contact Address
Address Typemailing and physical address
Address1935 Jamboree Drive, Suite 100
CityColorado Springs
State or ProvinceCO
Postal Code80920
CountryUNITED STATES

Contact Voice Telephone719-502-1296
Contact Electronic Mail Addresssbenham@sanborn.com
Hours of Service8:00 AM - 5:00 PM M-F

Process Step
Process Description
                                DEM Review/Updating. The LiDAR surface is reviewed and updated as needed to meet the final orthorectification standards set in this project.
                              
Process Date2017-04-30


Process Contact
Contact Information
Contact Organization Primary
Contact OrganizationSanborn Map Co., Inc.
Contact PersonShawn Benham
Contact PositionProject Manager
Contact Address
Address Typemailing and physical address
Address1935 Jamboree Drive, Suite 100
CityColorado Springs
State or ProvinceCO
Postal Code80920
CountryUNITED STATES

Contact Voice Telephone719-502-1296
Contact Electronic Mail Addresssbenham@sanborn.com
Hours of Service8:00 AM - 5:00 PM M-F

Process Step
Process Description
                                Using the processed GPS/IMU data and correctly oriented imagery, a bundle adjustment is computed (AT).
                              
Process Date2017-03-04


Process Contact
Contact Information
Contact Organization Primary
Contact OrganizationSanborn Map Co., Inc.
Contact PersonShawn Benham
Contact PositionProject Manager
Contact Address
Address Typemailing and physical address
Address1935 Jamboree Drive, Suite 100
CityColorado Springs
State or ProvinceCO
Postal Code80920
CountryUNITED STATES

Contact Voice Telephone719-502-1296
Contact Electronic Mail Addresssbenham@sanborn.com
Hours of Service8:00 AM - 5:00 PM M-F

Process Step
Process Description
                                Orthoimagery is rectified using the AT solution and LiDAR. Once rectified, the orthoimagery is colorbalanced to the acceptable parameters established by the customer. Orthoimagery then undergoes manual quality control to check for issues as outlined in the Digital Orthoimagery Acceptance Criteria document. Issues such as warps, smears, misalignments, etc. are corrected using proprietary tools and Adobe PhotoShop. Upon completion of the QC process, the orthos are provided to the client for review in uncompressed TIFF/TFW.
                              
Process Date2017-10-31


Process Contact
Contact Information
Contact Organization Primary
Contact OrganizationSanborn Map Co., Inc.
Contact PersonShawn Benham
Contact PositionProject Manager
Contact Address
Address Typemailing and physical address
Address1935 Jamboree Drive, Suite 100
CityColorado Springs
State or ProvinceCO
Postal Code80920
CountryUNITED STATES

Contact Voice Telephone719-502-1296
Contact Electronic Mail Addresssbenham@sanborn.com
Hours of Service8:00 AM - 5:00 PM M-F

Cloud Cover5


Spatial Data Organization 

Direct Spatial Reference MethodRaster


Raster Object Information
Raster Object TypePixel
Row Count10000
Column Count10000

Spatial Reference 

Horizontal Coordinate System Definition
Planar
Map Projection
Map Projection NameTransverse Mercator
Transverse Mercator
Scale Factor at Central Meridian0.9996
Longitude of Central Meridian-93
Latitude of Projection Origin0.0
False Easting500000
False Northing0.0

Planar Coordinate Information
Planar Coordinate Encoding Methodcoordinate pair
Coordinate Representation
Abscissa Resolution30cm
Ordinate Resolution30cm
Planar Distance Unitsmeters

Geodetic Model
Horizontal Datum NameD North American 1983
Ellipsoid NameGRS 1980
Semi-major Axis6378137.0
Denominator of Flattening Ratio298.257222101

Entities and Attributes 

Distribution Information 

Distributor
Contact Information
Contact Organization Primary
Contact OrganizationArkansas GIS Office
Contact PersonMatthew Delong
Contact PositionSenior GIS Analyst
Contact Address
Address Typemailing address
Address1 Capitol Mall Ste 6D
CityLittle Rock
State or ProvinceArkansas
Postal Code72201
CountryUNITED STATES

Contact Voice Telephone501-682-3710

Resource DescriptionDownloadable Data
Distribution Liability
                        None
                      
Standard Order Process
Digital Form
Digital Transfer Information
Format NameDigital
Transfer Size.135

Digital Transfer Option
Offline Option
Offline MediaFTP or Digital disk
Recording FormatFTP or Copy

Feesn/a


Metadata Reference 

Metadata Date2018-01-09
Metadata Contact
Contact Information
Contact Organization Primary
Contact OrganizationSanborn Map Co., Inc.
Contact PersonShawn Benham
Contact PositionProject Manager
Contact Address
Address Typemailing address
Address1935 Jamboree Drive, Suite 100
CityColorado Springs
State or ProvinceColorado
Postal Code80920-5358

Contact Voice Telephone719-502-1296
Contact Electronic Mail Addresssbenham@sanborn.com

Metadata Standard NameFGDC Content Standard for Digital Geospatial Metadata
Metadata Standard VersionFGDC-STD-001-1998
Metadata Time Conventionlocal time


Metadata Use Constraints
This data is meant for use by requested parties. This data cannot be used without express consent.