201110
Boone County 6 Inch Orthophotography
raster digital data
\\cos-svr-7\vol1\Proj_Management\312010195JeffersonCity\Metadata\Boone_6Inch.shp
Virginia Geographic Information Network (VGIN)
Unknown
Virginia Base Map Program
Boone County, Missouri contracted with the Sanborn Map Company to provide aerial data acquisition, ground control, aerial triangulation and digital orthophotography. Aerial imagery for this project was collected in the spring of 2011 to produce orthophotography at a 6-inch resolution.
The collection of aerial photographyand production of orthophotography was executed to capture the existing ground conditions at a specific point in time for the purpose of GIS analysis. Orthophotography along with DTM data typically provides an accurate base for digitally representing geographic features upon which a GIS is built.
20110323
20110413
ground condition
Irregular
-92.579967
-92.085778
39.261695
38.629776
None
orthophotography
imagery
raster
None
Missouri
Boone County
USA
For information about local datasets, contact the appropriate locality.
For information about local datasets, contact the appropriate locality.
Boone County
Jason Warzinik
GIS Manager
mailing and physical address
801 E. Walnut, Room 221
Columbia
MO
65201
(573) 886-4325
(573) 886-4325
JWarzinik@boonecountymo.org
Microsoft Windows Vista Version 6.0 (Build 6002) Service Pack 2; ESRI ArcCatalog 9.3.1.1850
This data has been produced to be fully compliant with NSSDA Standards.
Compliance with the accuracy standard was ensured by the placement of GPS ground control prior to the acquisition of aerial photography. The following checks were performed. 1. The ground control and airborne GPS data stream were validated through a fully analytical bundle aerotriangulation adjustment. The residuals of the adjustment met the required standards for accuracy.2. The DTM data was checked against the project control. The technician visited and confirmed the accuracy of the project mass points during initial compilation. 3. Digital orthophotography was validated through an inspection of edge matching and visual inspection for image quality.
The following software was used: 1. Digital Orthophoto processing - APS. 2. Aerotriangulation - ISAT 3. DTM data - Z/I Imaging SSK, APS
The horizontal rootmeansquare error (RMSE) of the airborne GPS control data does note exceed 20cm. All orthoimagery meats a 95% (NSSDA Confidnce Interval.
The vertical rootmeansquare error (RMSE) of the airborne GPS control data does note exceed30cm
Sanborn Map Company
Survey Ground Control
600
computer program
20110415
20110416
ground condition
Survey Ground Control
Photo Identifiable ground control points were selected for use in the Aerial Triangulation.
Aerial Imagery Acquisition
600
disc
20101103
ground condition
Aerial Imagery Acquisition
Sanborn utilized a Z/I DMC digital sensor to acquire color leaf off imagery over the project area.
Jefferson City
Unknown
Unknown
Digital Elevation Model
600
disc
ground condition
DEM
Client supplied raster LiDAR DEM
The digital aerial imagery for the 6-inch resolution orthophotography was collected at an average flying height of 5700 feet above sea level with a DMC camera. The Ground control used to support the orthophotographic mapping was collected by either paneling of permanent monuments or photographic identification of strategic points. The coordinates were collected via ground survey techniques. Z/I ISAT software was utilized for the aerial triangulation phase, using high accuracy softcopy stereo plotters. A photogrammetric project was created, adding camera data, photo data, ground control point data and exterior orientation data. An interior orientation was performed for the project photos, automatic pass and tie measurements were executed and finalized with manual measurement of surveyed ground control. The final bundle adjustment was executed using Photo Triangulation (PhotoT) software. The 6-inch resolution or 1"=100' map data was segmented into 2500' X 2500' tiles. Utilizing the raw images from DMC camera, client supplied DTM data, and digital aerial triangulation resulted in the creation of 4-band (RGB,CIR) digital orthoimagery. The digital aerial imagery was rectified using the best algorithm, radiometrically balanced to produce digital imagery of nominally consistent tone and contrast and mosaiced to create a seamless orthophotography of the entire project area. The data was tiled and complete tiles were delivered as GeoTIFF with supplementary TFW files.
201102
Sanborn
Raquel Charrois
Project Manager
mailing and physical address
1935 Jamoboree Dr, Suite 100
Colorado Springs
CO
80920
USA
719.264.5504
719.528.5093
0-1
Raster
G-polygon
1
Pixel
2500
2500
0.000000
0.000000
degree
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257224
Boone_6Inch
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
ESRI
Coordinates defining the features.
Id
Downloadable Data
0.003
20111006
Boone County
Jason Warzinik
GIS Manager
mailing and physical address
801 E. Walnut, Room 221
Columbia
MO
65201
(573) 886-4325
(573) 886-4322
jwarzinik@boonecountymo.org
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
http://www.esri.com/metadata/esriprof80.html
ESRI Metadata Profile