MRCOG 2020 Digital Orthophotography Mosaic

Metadata from the RGIS Metadata Repository

Identification Information

Citation
Citation Information
Originator Bohannan Huston, Inc.
Publication Date 2021-03-05
Publication Time 13:03:01
Title MRCOG 2020 Digital Orthophotography Mosaic
Geospatial Data Presentation Form raster digital data
Publication Information
Publication Place Mid-Region Council of Governments Jursidiction
Publisher MRCOG
Other Citation Details This dataset was created as a joint effort between MRCOG and Bohannan Huston, Inc. in support of the several user’s and agency missions. The data is owned by MRCOG and member agencies.
Online Linkage https://gstore.unm.edu/apps/rgis/datasets/a2f27db4-ed08-4ec9-b5b3-5b12e6f1bb89/services/ogc/wms?SERVICE=wms&REQUEST=GetCapabilities&VERSION=1.1.1
Online Linkage https://gstore.unm.edu/apps/rgis/datasets/a2f27db4-ed08-4ec9-b5b3-5b12e6f1bb89/services/ogc/wcs?SERVICE=wcs&REQUEST=GetCapabilities&VERSION=1.1.2
Online Linkage https://gstore.unm.edu/apps/rgis/datasets/a2f27db4-ed08-4ec9-b5b3-5b12e6f1bb89/MRCOG_2020_ECW.original.ecw
Online Linkage https://gstore.unm.edu/apps/rgis/datasets/a2f27db4-ed08-4ec9-b5b3-5b12e6f1bb89/metadata/FGDC-STD-001-1998.xml
Online Linkage https://gstore.unm.edu/apps/rgis/datasets/a2f27db4-ed08-4ec9-b5b3-5b12e6f1bb89/metadata/FGDC-STD-001-1998.html
Online Linkage https://gstore.unm.edu/apps/rgis/datasets/a2f27db4-ed08-4ec9-b5b3-5b12e6f1bb89/metadata/ISO-19115:2003.xml
Online Linkage https://gstore.unm.edu/apps/rgis/datasets/a2f27db4-ed08-4ec9-b5b3-5b12e6f1bb89/metadata/ISO-19115:2003.html
Larger Work Citation
Description
Abstract This digital orthophotography dataset consists of tiled orthophotos covering approximately 3,607 square miles as part the MRCOG 2020 digital orthophotography project. The 16,033 tiles of orthophotography depict four-band color (Red, Green, Blue, and Infrared (RGBI)) digital aerial photographs acquired in the spring of 2020. The project tiling scheme of one-quarter square mile tiles is organized according to PLSS second division and City of Albuquerque grid scheme. Lens and terrain distortion have been removed through orthorectification and tonal differences between adjacent images have been minimized to form a color-balanced mosaic of the entire project area. Orthorectified imagery corrects for geometric distortion and creates an image-based map with features represented appropriately at ground level. Above-ground features such as buildings and bridges may show some distortion or lean due to elevation. Bridges and elevated roads have been checked for warping due to elevation modeling and corrected. Each orthorectified pixel is exactly 0.5 ft. square. This orthophoto product conforms to American Society for Photogrammetry and Remote Sensing (ASPRS) Class I Standards for 1"=100' horizontal mapping or current ASPRS Positional Accuracy Standards for Digital Geospatial Data for Standard Mapping product where Horizontal Accuracy at the 95% Confidence Level is less than or equal to 3 pixels. Project coordinate systems were established on the New Mexico State Plane North Central Zone HARN projection (EPSG:2903), with horizontal datum referenced to the North American Datum of 1983 (NAD83), and vertical datum to the North American Vertical Datum of 1988 with units of U.S. Survey Feet.
Purpose The purpose of this project is to support activities throughout the MRCOG MPO, including but not limited to Geographic Information Systems data maintenance, urban, community and regional planning; project and infrastructure planning; project reporting; floodplain mapping; stormwater management; vegetation analysis; change detection; and initial project reviews.
Time Period of Content
Range of Dates/Times
Beginning Date 2020-03-19
Ending Date 2020-05-18
Currentness Reference ground condition
Status
Progress Complete
Maintenance and Update Frequency As needed
Spatial Domain
Bounding Coordinates
West Bounding Coordinate -107.223801
East Bounding Coordinate -106.12346
North Bounding Coordinate 35.700282
South Bounding Coordinate 33.857082
Keywords
Theme
Thesaurus ISO 19115 Topic Category
Keyword biota
Place
Thesaurus http://www.getty.edu/research/tools/vocabularies/tgn/
Keyword Mid-Region Council of Governments
Keyword Bernalillo County
Keyword Sandoval County
Keyword New Mexico
Keyword United States of America
Access Constraints Access to this data set is provided by the MRCOG.
Use Constraints Neither the Mid-Region Council of Governments (MRCOG), nor Bohannan Huston, Inc. (BHI) assumes liability for misuse of the data. Data should be used at the scale for which they were intended. No warranty, expressed, or implied, is made by MRCOG nor BHI regarding the utility of the data on any other system, nor shall the act of distribution constitute such warranty. THIS PUBLICATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. THE MRCOG SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RELATED TO THE USE OF THIS PUBLICATION, WHETHER OR NOT MRCOG IS ADVISED OF SUCH DAMAGE.
Point of Contact
Contact Information
Contact Person Primary
Contact Person
Contact Organization
Contact Organization Primary
Contact Organization Mid-Region Council of Governments (MRCOG)
Contact Person Forest Replogle
Contact Position Transportation Planner
Contact Address
Address Type mailing address
Address 809 Copper Avenue NW
City Albuquerque
State or Province NM
Postal Code 87102
Country USA
Contact Voice Telephone 505-247-1750
Contact Facsimile Telephone
Contact Electronic Mail Address info@mrcog-nm.gov
Hours of Service
Contact Instructions
Browse Graphic
File Name MRCOG_2020_ECW.ecw
File Type
Description MRCOG 2020 Digital Orthophotography
Data Set Credit Acknowledgement of the MRCOG and Bohannan Huston, Inc. would be appreciated for products derived from these data. Data is owned by the MRCOG.
Native Data Set Environment ESRI ArcGIS; ArcMap; GeoTIFF; MrSID, ECW
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Data Quality Information

Attribute Accuracy Report
Report Radiometric qualities of the imagery have been inspected and color balancing processing applied to create near seamless imagery mosaics. Slight radiometric differences may exist between adjacent orthorectified photos. Radiometric differences may be attributable to changes in time and date of source image acquisition and sun angles differences along flight lines. To minimize these variations image flight acquisition adhered to ASPRS capture standards requiring at least a 30 degree sun angle above horizon for all flights. Tonal balancing was also performed during image mosaicking to adjust and optimize color matching between adjacent photos. Slight post process image sharpening was applied to the project imagery.
Quantitative Attribute Accuracy Assessment
Attribute Accuracy Value
Attribute Accuracy Explanation
Horizontal Positional Accuracy Report
Report Tested 0.52 ft. (RMSE) and 0.91 ft. horizontal accuracy (NSSDA 95% confidence) to well-defined primary aerial photography control.
Quantitative Horizontal Positional Accuracy Assessment
Horizontal Positional Accuracy Value
Horizontal Positional Accuracy Explanation
Logical Consistency Report Orthophoto tiles have been validated for image file/pixel size and inspected visually to ensure logical relationships between expected data elements.
Completeness Report Deliverable data tiles were inspected to ensure complete image data coverage. Data tiles may be comprised of multiple flight line data sources. Sources covering the orthophoto mosaic tiles are defined by flight line photo index information. The resulting digital orthophoto image (DOI) tile is a square. Pixelation (by project design) of areas may be present in locations of tiles/mosaics to purposely obscure imagery details.
Lineage
Source Information
Source Citation
Citation Information
Originator Bohannan Huston, Inc.; Alan R. Benham, P.S.
Publication Date 2020-06-10
Publication Time
Title Survey Control Report for MRCOG Orthophotography
Geospatial Data Presentation Form raster digital data
Publication Information
Publication Place
Publisher
Other Citation Details
Source Scale Denominator 600
Type of Source Media Portable Document Format
Source Time Period of Content
Source Currentness Reference ground condition
Source Citation Abbreviation BHI MRCOG Area Control Database
Source Contribution Geodetic control were established for the project to provide a primary control network for orthophotography mapping in the project coordinate system.
Source Information
Source Citation
Citation Information
Originator Aero-Graphics Inc.
Publication Date 2020-05-21
Publication Time
Title Airborne Collection - Microsoft/Vexcel UltraCam Eagle (UCE) digital camera system with Inertial Measurement Unit (IMU) and on-board Global Positioning System (GPS).
Geospatial Data Presentation Form Image
Publication Information
Publication Place
Publisher
Other Citation Details
Source Scale Denominator 600
Type of Source Media Hard drive
Source Time Period of Content
Source Currentness Reference ground condition
Source Citation Abbreviation GC
Source Contribution Digital aerial imagery was collected at a nominal average orthometric height of 9,640 ft. above ground elevation using the Microsoft/Vexcel UltraCam Eagle (UCE) digital camera system. The UCE aerial imagery served the purpose of supporting the production of 6-inch ground sample distance (GSD) resolution digital orthoimagery.
Process Step
Process Description 1. Aerial Triangulation - Images were aerotriangulated to finalize their exterior orientation (EO). Intergraph ISAT and GeoMedia Professional were used to perform digital point matching/mensuration/block adjustments and quality control queries respectively. Final block adjustments were evaluated at sub-pixel accuracy.
Process Date 2020-06
Process Time
Process Contact
Process Step
Process Description 2. Orthorectification - Images were orthorectified to remove distortions caused by changes in the elevation of the terrain, camera orientation and lens distortion. The orthorectification process used a cubic convolution interpolation method and ground elevations created from the newly acquired digital imagery using photogrammetric point cloud processing (PPC). The PPC was then classified into bare earth for the creation of digital elevation models (DEM). Intergraph ImageStation OrthoPro® software used was for orthorectification. Delivery of 16-bit imagery was recieved and rectification was performed to an 8-bit pixel.
Process Date 2020-08
Process Time
Process Contact
Process Step
Process Description 3. Orthomosaic - Images were color balanced and color corrected individually to ensure color consistency between flight lines, time(s) of day, and date(s) of capture. Images were mosaicked into large aggregate tiles and automatic seamlines were used to combine the most nadir components of individual images. Aggregate tiles were again tonally balanced and color corrected with the entire project in view. A second global color adjustment was performed to minimize color changes across images. Project deliverable tiles were cut from the mosaic and formatted for delivery. Trimble OrthoVista® software was used to perform these steps.
Process Date 2020-09
Process Time
Process Contact
Process Step
Process Description 4. Orthophoto Quality Control (QC) and Delivery. Review processes were developed to comprehensively assess output orthophoto data tiles. This process was designed to identify any areas requiring additional effort to correct issues in automatic seam line placement and/or orthorectification (and bridge warping in particular). During this assessment, all orthophoto tiles were reviewed by analysts in GeoMedia Professional®. Issues requiring additional work were flagged using a “call” feature indicating the type of fix required. Next, specific rework sites were reprocessed with Adobe Photoshop® to remedy issues identified by call features. Final review of all fixed tiles was performed by an independent analyst to verify (Quality Assurance) that the call was corrected as required. Final QC data tiles were then processed for delivery to include production of compressed (GeoTIFF, MrSid, and ECW format) and uncompressed (GeoTIFF) tiles.
Process Date 2020-11
Process Time
Process Contact
Process Step
Process Description 5. Post QC Sensitive Area Pixelation. Area mosaics were reviewed by local agencies and Pueblos to identify areas where the orthoimagery may show sensitive features. Once reviewed directives were issued to pixelate the imagery within these areas. A record of pixelation coverage is documented in the shape file "MRCOG_2020_Blur_Areas.shp". These areas can include entire Pueblo boundaries and select locations within tiles throughout the project.
Process Date 2021-01
Process Time
Process Contact
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Spatial Data Organization Information

Indirect Spatial Reference Method GeoTIFF
Direct Spatial Reference Method Raster
Raster Object Information
Raster Object Type Pixel
Row Count 5500
Column Count 5500
Vertical Count
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Spatial Reference Information

Spatial Reference
Name NAD83(HARN) New Mexico Central (ftUS)
Code EPSG:4269
URL http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4269
Spatial Reference
Name GRS 1980
Code EPSG:7019
URL http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:ellipsoid:EPSG::7019
Spatial Reference
Name State Plane Coordinate System 1983, 2826
Code ESRI:
URL http://spatialreference.org/ref/esri//
Spatial Reference
Name North American Vertical Datum of 1988
Code EPSG:5103
URL http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:datum:EPSG::5103
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Entity and Attribute Information

Detailed Description
Entity Type
Entity Type Labelvalue
Entity Type Definition 4-band true color and near infrared orthoimagery is organized in four bands or channels which represent the red, green, blue, and near infrared (R,G,B,IR) portions of the electromagnetic spectrum. Each image pixel is assigned a triplet of numeric values, one for each band stored as 8-bit image data with 256 gray levels ranging from 0 to 255 for each band
Entity Type Definition Source U.S. Department of the Interior, U.S. Geological Survey, 1996, Standards for Digital Orthophotos: Reston, Va.
Attribute
Attribute Label value
Attribute Definition gray-scale
Attribute Definition Source Radiometric image brightness values generated during orthophoto processing.
Attribute Domain Values
Unrepresentable Domain gray scale
Overview Description
Entity and Attribute Overview For color-infrared and natural color image composites, a digital number from 0 to 255 will also be assigned to each pixel and for each band in a three-band image represented by red, green, and blue, (natural color composite - RGB) or infrared, red and green (as RGB for a false color-infrared (CIR) composite). Areas where the rectification process is incomplete because of incomplete data (that is, lack of image data) are represented as white or 255 in all three bands.
Entity and Attribute Detail Citation http://nationalmap.gov/standards/pdf/6META997.PDF National Mapping Program Technical Instructions U.S. Department of the Interior U.S. Geological Survey National Mapping Division Part 6 Digital Orthophoto Quadrangles Standards for the Preparation of Digital Geospatial Metadata
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Distribution Information

Distributor
Resource Description Downloadable Data
Distribution Liability The material on this site is made available as a public service. Maps and data are to be used for reference purposes only and the Earth Data Analysis Center (EDAC), Resource Geographic Information System (RGIS) and The University of New Mexico are not responsible for any inaccuracies herein contained. No responsibility is assumed for damages or other liabilities due to the accuracy, availability, use or misuse of the information herein provided. Unless otherwise indicated in the documentation (metadata) for individual data sets, information on this site is public domain and may be copied without permission; citation of the source is appreciated.
Standard Order Process
Digital Form
Digital Transfer Information
Format Name ERDAS Compressed Wavelets (ecw)
Transfer Size 31105
Digital Transfer Option
Online Option
Computer Contact Information
Network Address
Network Resource Name https://gstore.unm.edu/apps/rgis/datasets/a2f27db4-ed08-4ec9-b5b3-5b12e6f1bb89/MRCOG_2020_ECW.original.ecw
Access Instructions Download from Resource Geographic Information System (RGIS) at http://rgis.unm.edu.
Fees None. The files are available to download from Resource Geographic Information System (RGIS) (http://rgis.unm.edu).
Ordering Instructions Contact Earth Data Analysis Center at clearinghouse@edac.unm.edu
Custom Order Process Contact Earth Data Analysis Center at clearinghouse@edac.unm.edu
Technical Prerequisites Adequate computer capability is the only technical prerequisite for viewing data in digital form.
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Metadata Reference Information

Metadata Date 2024-09-09
Metadata Review Date
Metadata Future Review Date
Metadata Contact
Contact Information
Contact Person Primary
Contact Person
Contact Organization
Contact Organization Primary
Contact Organization Earth Data Analysis Center
Contact Person
Contact Position Clearinghouse Manager
Contact Address
Address Type mailing and physical address
Address MSC01 1110
Address 1 University of New Mexico
City Albuquerque
State or Province NM
Postal Code 87131-0001
Country USA
Contact Voice Telephone 505-277-3622 ext. 230
Contact Facsimile Telephone 505-277-3614
Contact Electronic Mail Address clearinghouse@edac.unm.edu
Hours of Service 0800 - 1700 MT, M-F -7 hours GMT
Contact Instructions
Metadata Standard Name FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version FGDC-STD-001-1998
Metadata Time Convention
Metadata Access Constraints
Metadata Use Constraints
Metadata Security Information
Security Classification System
Security Classification
Security Handling Description
Metadata Extensions
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