MRCOG 2020 Digital Orthophotography Mosaic
Metadata from the RGIS Metadata Repository
Identification Information
- Citation
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- Citation Information
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- 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
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- 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
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- 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
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- Range of Dates/Times
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- Beginning Date 2020-03-19
- Ending Date 2020-05-18
- Currentness Reference ground condition
- Status
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- Progress Complete
- Maintenance and Update Frequency As needed
- Spatial Domain
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- Bounding Coordinates
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- West Bounding Coordinate -107.223801
- East Bounding Coordinate -106.12346
- North Bounding Coordinate 35.700282
- South Bounding Coordinate 33.857082
- Keywords
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- Theme
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- Thesaurus ISO 19115 Topic Category
- Keyword biota
- Place
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- 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
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- Contact Information
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- Contact Person Primary
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- Contact Person
- Contact Organization
- Contact Organization Primary
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- Contact Organization Mid-Region Council of Governments (MRCOG)
- Contact Person Forest Replogle
- Contact Position Transportation Planner
- Contact Address
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- 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
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- 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
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- 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
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- Attribute Accuracy Value
- Attribute Accuracy Explanation
- Horizontal Positional Accuracy Report
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- 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
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- 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
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- Source Information
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- Source Citation
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- Citation Information
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- 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
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- Publication Place
- Publisher
- Other Citation Details
- Source Scale Denominator 600
- Type of Source Media Portable Document Format
- Source Time Period of Content
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- 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
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- Source Citation
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- Citation Information
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- 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
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- Publication Place
- Publisher
- Other Citation Details
- Source Scale Denominator 600
- Type of Source Media Hard drive
- Source Time Period of Content
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- Raster Object Type Pixel
- Row Count 5500
- Column Count 5500
- Vertical Count
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Spatial Reference Information
- Spatial Reference
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- 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
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- Name GRS 1980
- Code EPSG:7019
- URL http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:ellipsoid:EPSG::7019
- Spatial Reference
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- Name State Plane Coordinate System 1983, 2826
- Code ESRI:
- URL http://spatialreference.org/ref/esri//
- Spatial Reference
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- 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
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- Entity Type
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- 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
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- Attribute Label value
- Attribute Definition gray-scale
- Attribute Definition Source Radiometric image brightness values generated during orthophoto processing.
- Attribute Domain Values
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- Unrepresentable Domain gray scale
- Overview Description
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- 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
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- Digital Form
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- Digital Transfer Information
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- Format Name ERDAS Compressed Wavelets (ecw)
- Transfer Size 31105
- Digital Transfer Option
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- Online Option
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- Computer Contact Information
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- Network Address
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- 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
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- Contact Information
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- Contact Person Primary
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- Contact Person
- Contact Organization
- Contact Organization Primary
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- Contact Organization Earth Data Analysis Center
- Contact Person
- Contact Position Clearinghouse Manager
- Contact Address
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- 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
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- Security Classification System
- Security Classification
- Security Handling Description
- Metadata Extensions
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