VTORTHO_0_15M_CLRIR_2016

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: VT Center for Geographic Information

Publication_Date: 20170308

Title: VTORTHO_0_15M_CLRIR_2016

Edition: 2016A

Geospatial_Data_Presentation_Form: raster digital data

Series_Information:

Series_Name: Vermont 2016 Orthoimagery - 15-centimeter

Issue_Identification: 2016A

Publication_Information:

Publication_Place: Montpelier VT 05620-2001

Publisher: VT Center for Geographic Information

Other_Citation_Details: Tile Structure - 900m X 900m

Description:

Abstract:

This metadata record describes the acquisition and production of natural color and color infrared digital ground orthoimagery covering a portion of Vermont State. The digital orthophotography and color infrared digital orthos are composed of 24 bit natural color digital orthos with a 0.15 meter pixel resolution. Geographic extent includes partial coverage of Rutland and Windsor Counties in central Vermont, approximately 249.6 total square miles. Dataset Description: The Vermont 2016 Imagery project called for the planning, acquisition, processing and derivative products of imagery data to be collected at an ground sample distance of 15 centimeters. Project specifications are based on the ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014). The data was developed based on a horizontal projection/datum of NAD83 (2011), State Plane Coordinate System Vermont, meters and vertical datum of NAVD1988 (Geoid 12A), meters. Raw imagery data was produced in 16-bit 4-band (RGB-IR) uncompressed format, then processed to create 24-bit 4-band (RGB-IR) orthorectified tiles. Compressed orthoimagery was produced in JPEG2000 format. A total of 798 tiles were produced with a tile size of 900 meters x 900 meters. Tile names use the following naming convention "VT_(TILENUM)_(YYYYMMDD).(FileExtension), where TILENUM = the 8-digit value of the TILENUM attribute in the master index files and YYYYMMDD = the flight acquisition date (or majority date) for that particular tile. Ground Conditions: Imagery was collected in spring of 2016 during minimal shadow conditions. In order to post process the imagery data to meet task order specifications, Quantum Spatial utilized 29 checkpoints provided by the State of Vermont. These checkpoints were established throughout the project area and used to check the accuracy of the data.

Purpose:

The acquisition, production, and delivery of natural color digital orthoimagery covering the project area was a coordinated effort between Quantum Spatial, Inc. and the Vermont Center for Geographic Information (VCGI). This data was collected as part of a 5-year project issued by the State of Vermont to collect imagery covering approximately 20% of the state over a period of five consecutive leaf-off Spring seasons. This data depicts geographic features on the surface of the earth.

Supplemental_Information:

Project Name: Vermont 2016 Imagery Project Location: Rutland and Windsor Counties. Please see the bounding coordinates for tile location. Ground Sample Distance: 15cm Output format: TIFs and SIDs Output media: Hard drive Spectrum: 4 separate, distinct bands (red, blue green, and near infrared) Output: Raw images are stored in strips which are processed into TIFs which are then seamed into mosaics. Final mosaics are compressed to SIDs. Contractor: Quantum Spatial, Inc. Project acquisition dates and times (also contained in the source information section of the metadata): Lift 20160414-A_N910FC_SN10547 was flown April 14, 2016 with AC90 N910FC and ADS100 Serial Number 10547 from 16:21:18 to 16:58:21 local time. Lift 20160415-A_N910FC_SN10547 was flown April 15, 2016 with AC90 N910FC and ADS100 Serial Number 10547 from 13:16:52 to 17:01:24 local time. Lift 20160416-A_N910FC_SN10547 was flown April 16, 2016 with AC90 N910FC and ADS100 Serial Number 10547 from 13:05:21 to 15:51:16 local time. Lift 20160421-A_N690LN_SN10529 was flown April 21, 2016 with AC90 N690LN and ADS100 Serial Number 10529 from 13:34:20 to 14:05:06 local time. Dector types and manufacturer: Leica ADS 100 push broom sensor Spacing between CCD detectors (in micrometers): n/a Array Size: 20,000-pixels Nominal ground swath of the detector: 3,000m Spectral sensitivity of the detector (in nanometers): Red 619-651 Green 525-585 Blue 435-495 Near Infrared 808-882 Filters used (if any): none Scene to scene edge-matching accuracy (in pixels): Offsets greater than 5 pixels were edited. Band to band registration accuracy (in pixels): Please see individual camera calibration reports included in the final report. Horizontal accuracy (in units; also contained in the Horizontal Positional Accuracy Value of the metadata): 0.079m (7.9 cm) Horizontal Datum (also contained in the Horizontal Datum Name of the metadata): North American Datum of 1983 (2011) Vertical Datum: none Imaging Processing Description (also contained in the process step of the metadata): Data processing of ADS100 imagery and metadata is a streamlined digital workflow process utilizing Quantum Spatial Inc.'s proprietary software and commercial softcopy photogrammetric software including XPro, Inertial Explorer and Orthovista. The ADS100 sensor GPS/IMU position and attitude data is directly processed through three separate but continuous steps: Inertial Explorer for data extracting, data analysis, and data measurement. The post-processed GPS data output is displayed onto the flight profile plot, which clearly shows the RMS values of the combined separation, C/A Code and Carrier Phase. The output GPS/IMU data is also verified by a PDOP plot and PDOP values are compared to an acceptable threshold range. The processing on ADS100 images is based on XPro software using ORIMA for bundle adjustment. Image tie points providing the observations for the least squares bundle adjustment were selected from the images using an autocorrelation algorithm. A least squares bundle adjustment of image pass points and the ABGPS was performed to develop an aerotriangulation solution for each block using XPro Triangulation software. Upon final bundle adjustment, the triangulated strips were ortho-rectified to the DEM. Quantum Spatial generated an elevation model by combining client-provided DEMs, in-house LiDAR data, and autocorrelated surface data. Orthorectified imagery is checked and radiometrically balanced in a parallel process that utilizes custom gradient correction software and the INPHO Orthovista Radiometrics editor. Once both processes have passed rigid AT and QC milestones, the imagery bands, red, green, blue, and near infrared are rectified to a 4-Band RGBN product. These orthos are passed to the mosaic team for QC, seam line placement and tiling using the interactive capabilities of Orthovista software. Following the application of seamline and final tonal adjustment, the orthoimagery is cut to a custom tiling index. An additional set of orthoimagery was produced in black and white. Compressed imagery was produced in JPEG format for the 4-band and black and white imagery.

Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date: 20160414

Single_Date/Time:

Calendar_Date: 20160415

Single_Date/Time:

Calendar_Date: 20160416

Single_Date/Time:

Calendar_Date: 20160421

Currentness_Reference: Ground Conditions

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Every five years

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -73.3264786017412

East_Bounding_Coordinate: -72.2765264352447

North_Bounding_Coordinate: 43.7935245830779

South_Bounding_Coordinate: 43.2426011377593

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: 15 centimeter orthoimage

Theme_Keyword: 15 cm orthoimage

Theme_Keyword: 0.15 meter orthoimage

Theme_Keyword: 0.15 m orthoimage

Theme_Keyword: rectified photograph

Theme_Keyword: rectified image

Theme_Keyword: orthophoto

Theme_Keyword: four band orthophoto

Theme_Keyword: orthoimage

Theme_Keyword: image map

Place:

Place_Keyword_Thesaurus:

U.S. Department of Commerce, 1995, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions, Federal Information Processing Standard (FIPS) 10-4): Washington, D.C., National Institute of Standards and Technology.

Place_Keyword: US

Place:

Place_Keyword_Thesaurus:

U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard (FIPS) 5-2): Washington, D.C., National Institute of Standards and Technology.

Place_Keyword: GA

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: United States

Place_Keyword: US

Place_Keyword: Vermont

Place_Keyword: VT

Place_Keyword: Rutland County

Place_Keyword: Windsor County

Access_Constraints:

VCGI and the State of VT make no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.

Use_Constraints: None.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: VT Center for Geographic Information

Contact_Address:

Address_Type: Mailing and Physical Address

Address: 1 National Life Dr, Dewey Building, 2nd Floor

City: Montpelier

State_or_Province: VT

Postal_Code: 05620-2001

Country: USA

Contact_Voice_Telephone: (802) 585-0820

Contact_TDD/TTY_Telephone: None

Contact_Facsimile_Telephone:

Contact_Electronic_Mail_Address: vcgi@vermont.gov

Hours_of_Service: 9am - 5pm, M-F

Data_Set_Credit: Vermont Imagery Program (VIP)

Security_Information:

Security_Classification_System: N/A

Security_Classification: Unclassified

Security_Handling_Description: No Security Considerations

Native_Data_Set_Environment: ESRI ArcGIS

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Radiometry is verified by visual inspection of the digital orthophoto. Slight systematic radiometric differences may exist between adjacent orthoimage files; these are due primarily to differences in source image capture dates and sun angles along flight lines. These differences can be observed in an image's general lightness or darkness when it is compared to adjacent orthoimage file coverages. Tonal balancing may be performed over a group of images during the mosaicking process which may serve to lighten or darken adjacent images for better color tone matching.

Logical_Consistency_Report:

All GeoTIFF tagged data and image file sizes are validated using commercial GIS software to ensure proper loading before being archived. This validation procedure ensures correct physical format and field values for tagged elements. Seamlines and tile edges are visually inspected. Seamline mismatches are not corrected unless the overall displacement exceeds one foot.

Completeness_Report:

Orthoimages are visually inspected for completeness to ensure that no gaps or image misplacements exist within and between adjacent images. These images are derived by mosaicking multiple images to ensure complete coverage. Source imagery is cloud free. Photography was flown during leaf-off in deciduous vegetation regions. The data was clipped to the area of interest.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The accuracy is designed to meet or exceed American Society for Photogrammetry and Remote Sensing Accuracy's Positional Accuracy Standards for Digital Geospatial Data (2014). The computed RMSEx and RMSEy will be less than 2 pixels.

Quantitative_Horizontal_Positional_Accuracy_Assessment:

Horizontal_Positional_Accuracy_Value: 0.079

Horizontal_Positional_Accuracy_Explanation: RMSEr in meters

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Quantum Spatial

Publication_Date: 2016

Title: Aerial Imagery

Geospatial_Data_Presentation_Form: remote-sensing image

Type_of_Source_Media: hard drive

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20160414

Beginning_Time: 162118

Ending_Date: 20160414

Ending_Time: 165821

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: AIRPHOTO

Source_Contribution:

New digital, color aerial imagery of the site was acquired using Leica ADS Digital Sensor (serial number 10547). Airborne GPS/IMU data was recorded at the time of all imagery acquisition. Leica calibrated the sensors used to fly the project. This data was acquired with a Rockwell Turbo Commander 690C, twin-turboprop (Tail Number: N910FC) at approximately 1,881 meters above ground level (AGL), acquiring a pixel resolution of 15 cm and a bit depth of 12-bits. Based-upon the CCD Array configuration present in the ADS digital sensor, imagery for each flight line is 20,000-pixels in width. Red, Green, Blue, and Near-Infrared bands were collected.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Quantum Spatial

Publication_Date: 2016

Title: Aerial Imagery

Geospatial_Data_Presentation_Form: remote-sensing image

Type_of_Source_Media: hard drive

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20160415

Beginning_Time: 131652

Ending_Date: 20160415

Ending_Time: 170124

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: AIRPHOTO

Source_Contribution:

New digital, color aerial imagery of the site was acquired using Leica ADS Digital Sensor (serial number 10547). Airborne GPS/IMU data was recorded at the time of all imagery acquisition. Leica calibrated the sensors used to fly the project. This data was acquired with a Rockwell Turbo Commander 690C, twin-turboprop (Tail Number: N910FC) at approximately 1,881 meters above ground level (AGL), acquiring a pixel resolution of 15 cm and a bit depth of 12-bits. Based-upon the CCD Array configuration present in the ADS digital sensor, imagery for each flight line is 20,000-pixels in width. Red, Green, Blue, and Near-Infrared bands were collected.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Quantum Spatial

Publication_Date: 2016

Title: Aerial Imagery

Geospatial_Data_Presentation_Form: remote-sensing image

Type_of_Source_Media: hard drive

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20160416

Beginning_Time: 130521

Ending_Date: 20160416

Ending_Time: 155116

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: AIRPHOTO

Source_Contribution:

New digital, color aerial imagery of the site was acquired using Leica ADS Digital Sensor (serial number 10547). Airborne GPS/IMU data was recorded at the time of all imagery acquisition. Leica calibrated the sensors used to fly the project. This data was acquired with a Rockwell Turbo Commander 690C, twin-turboprop (Tail Number: N910FC) at approximately 1,881 meters above ground level (AGL), acquiring a pixel resolution of 15 cm and a bit depth of 12-bits. Based-upon the CCD Array configuration present in the ADS digital sensor, imagery for each flight line is 20,000-pixels in width. Red, Green, Blue, and Near-Infrared bands were collected.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Quantum Spatial

Publication_Date: 2016

Title: Aerial Imagery

Geospatial_Data_Presentation_Form: remote-sensing image

Type_of_Source_Media: hard drive

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20160421

Beginning_Time: 133420

Ending_Date: 20160421

Ending_Time: 140509

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: AIRPHOTO

Source_Contribution:

New digital, color aerial imagery of the site was acquired using Leica ADS Digital Sensor (serial number 10547). Airborne GPS/IMU data was recorded at the time of all imagery acquisition. Leica calibrated the sensors used to fly the project. This data was acquired with a Rockwell Turbo Commander 690B, twin-turboprop (Tail Number: N690LN) at approximately 1,881 meters above ground level (AGL), acquiring a pixel resolution of 15 cm and a bit depth of 12-bits. Based-upon the CCD Array configuration present in the ADS digital sensor, imagery for each flight line is 20,000-pixels in width. Red, Green, Blue, and Near-Infrared bands were collected.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Quantum Spatial, Inc.

Publication_Date: 2016

Title: Digital Elevation Model

Geospatial_Data_Presentation_Form: raster digital data

Type_of_Source_Media: disc

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2016

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: DEM

Source_Contribution:

Quantum Spatial generated an elevation model by combining client-provided DEMs, in-house LiDAR data, and autocorrelated surface data.

Source_Information:

Source_Citation:

Citation_Information:

Originator: State of Vermont

Publication_Date: Unknown

Title: Photo Checkpoints

Geospatial_Data_Presentation_Form: Vector digital data

Type_of_Source_Media: online

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: Unknown

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: CONTROL

Source_Contribution:

The client-provided control points were used to verify the accuracy of the orthophotos.

Process_Step:

Process_Description:

Data processing of ADS100 imagery and metadata is a streamlined digital workflow process utilizing Quantum Spatial Inc.'s proprietary software and commercial softcopy photogrammetric software including XPro, Inertial Explorer and Orthovista. The ADS100 sensor GPS/IMU position and attitude data is directly processed through three separate but continuous steps: Inertial Explorer for data extracting, data analysis, and data measurement. The post-processed GPS data output is displayed onto the flight profile plot, which clearly shows the RMS values of the combined separation, C/A Code and Carrier Phase. The output GPS/IMU data is also verified by a PDOP plot and PDOP values are compared to an acceptable threshold range. The processing on ADS100 images is based on XPro software using ORIMA for bundle adjustment. Image tie points providing the observations for the least squares bundle adjustment were selected from the images using an autocorrelation algorithm. A least squares bundle adjustment of image pass points and the ABGPS was performed to develop an aerotriangulation solution for each block using XPro Triangulation software. Upon final bundle adjustment, the triangulated strips were ortho-rectified to the DEM. Quantum Spatial generated an elevation model by combining client-provided DEMs, in-house LiDAR data, and autocorrelated surface data. Orthorectified imagery is checked and radiometrically balanced in a parallel process that utilizes custom gradient correction software and the INPHO Orthovista Radiometrics editor. Once both processes have passed rigid AT and QC milestones, the imagery bands, red, green, blue, and near infrared are rectified to a 4-Band RGBN product. These orthos are passed to the mosaic team for QC, seam line placement and tiling using the interactive capabilities of Orthovista software. Following the application of seamline and final tonal adjustment, the orthoimagery is cut to a custom tiling index.

Process_Date: 2016

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Quantum Spatial

Contact_Person: Sarah Zibart

Contact_Address:

Address_Type: mailing and physical

Address: 523 Wellington Way

City: Lexington

State_or_Province: KY

Postal_Code: 40503

Country: USA

Contact_Voice_Telephone: 859-277-8700

Contact_Facsimile_Telephone: 859-277-8901

Contact_Electronic_Mail_Address: szibart@quantumspatial.com

Hours_of_Service: Monday through Friday 8:00 AM to 5:00 PM (Eastern Time)

Contact_Instructions:

If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours.

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: pixel

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: State Plane Coordinate System 1983

State_Plane_Coordinate_System:

SPCS_Zone_Identifier: 4400

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999964285714286

Longitude_of_Central_Meridian: -72.5

Latitude_of_Projection_Origin: 42.5

False_Easting: 500000.0

False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column

Coordinate_Representation:

Abscissa_Resolution: 0.15

Ordinate_Resolution: 0.15

Planar_Distance_Units: meter

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983 (2011)

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.0

Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: VT Center for Geographic Information

Contact_Address:

Address_Type: Mailing and Physical Address

Address: 1 National Life Dr, Dewey Building, 2nd Floor

City: Montpelier

State_or_Province: VT

Postal_Code: 05620-2001

Country: USA

Contact_Voice_Telephone: (802) 585-0820

Contact_TDD/TTY_Telephone: None

Contact_Facsimile_Telephone:

Contact_Electronic_Mail_Address: vcgi@vermont.gov

Hours_of_Service: 9am - 5pm, M-F

Resource_Description: VTORTHO_0_15M_CLRIR_2016

Distribution_Liability:

VCGI and the State of Vermont make no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: JPEG2000 and GeoTIFF

Format_Specification: JPEG2000 (20x compression) and GeoTIFF

Format_Information_Content: geospatial data

File_Decompression_Technique: Image viewer

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://maps.vcgi.vermont.gov/gisdata/vcgi/imagery/VTORTHO/0_15M/CLRIR/2016/COMP/

Access_Instructions:

Download compressed (JPEG2000) from web site. Uncompressed GeoTIFF available on offline media.

Offline_Option:

Offline_Media: USB drive

Fees:

No charge when downloading compressed (JPEG2000) from the internet, and when no custom processing is required. Charge for offline media options (uncompressed GeoTIFF).

Ordering_Instructions: Send an email describing data request to vcgi@vermont.gov

Turnaround: About 5 days.

Custom_Order_Process: Send an email describing data request to vcgi@vermont.gov

Technical_Prerequisites: GIS Software

Available_Time_Period:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20170308

Metadata_Reference_Information:

Metadata_Date: 20170308

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: VT Center for Geographic Information

Contact_Person: GIS Database Administrator

Contact_Address:

Address_Type: Mailing and Physical Address

Address: 1 National Life Dr, Dewey Building, 2nd Floor

City: Montpelier

State_or_Province: VT

Postal_Code: 05620-2001

Country: USA

Contact_Voice_Telephone: (802) 585-0820

Contact_TDD/TTY_Telephone: None

Contact_Facsimile_Telephone:

Metadata_Standard_Name: FGDC Content Standards for Digital Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: Local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None

Metadata_Security_Information:

Metadata_Security_Classification_System: N/A

Metadata_Security_Classification: Unclassified

Metadata_Security_Handling_Description: No security considerations