<?xml version="1.0"?>
<metadata>
  <idinfo>
    <citation>
      <citeinfo>
        <origin>State of Ohio Office of Information Technology, Ohio Geographically Referenced Information Program</origin>
        <pubdate>20170921</pubdate>
        <pubtime>Unknown</pubtime>
        <title>BS861683.tif</title>
        <geoform>raster digital file</geoform>
        <pubinfo>
          <pubplace>Columbus, OH</pubplace>
          <publish>OGRIP</publish>
        </pubinfo>
      </citeinfo>
    </citation>
    <descript>
      <abstract>The City of Columbus, OH Orthoimagery Project consists of the following:
	New project-wide 1”=50’ scale 8-bit, 4-band (R,G,B,NIR) stacked orthoimagery with a 3-inch pixel resolution
The project was performed in 2017 for the City of Columbus is a project-wide orthoimagery update project.  Existing ground control and LiDAR will be utilized.

2017 City of Columbus Digital Orthoimagery Project – In the spring of 2017 City of Columbus obtained new orthoimagery covering the entire city service area. Products produced 4-band, 8-bit orthophotos with a 0.25-foot ground sample distance (GSD). The aerial imagery was collected during leaf-off conditions at a minimum resolution of 3-inch. Imagery was collected with Leica ADS100 digital cameras and rectified using LiDAR data. Adjacent flight lines overlap by an average of 60 percent. The orthos are delivered as a citywide dataset, consisting of 1,250' x 1,250' uncompressed 8-bit, 4-band color geotiff files. Horizontal accuracy is based upon NSSDA Standards for 7cm orthoimagery. All ortho tiles are full image tiles. The file naming convention is as follows: bsxxxyyy (Ohio South Zone); Please note that xxx and yyy represent the easting and northing coordinates (respectively) in state plane feet. Each geotiff ortho file is approximately 100 megabytes in size. Ownership of the data products resides with the City of Columbus and the state of Ohio. Orthoimagery and ancillary data products produced through this contract are public domain data.</abstract>
      <purpose>The City of Columbus, OH has a goal to develop and/or update their existing orthoimagery geospatial dataset for use by city agencies, other levels of government, academia, and the general public, and to provide these datasets for inclusion to OGRIP.  OGRIP is a State of Ohio resource for geographic information technology users.</purpose>
    </descript>
    <timeperd>
      <timeinfo>
        <sngdate>
          <caldate>20170402</caldate>
        </sngdate>
      </timeinfo>
      <current>ground condition</current>
    </timeperd>
    <status>
      <progress>Complete</progress>
      <update>As needed</update>
    </status>
    <spdom>
      <bounding>
        <westbc>-82.882157</westbc>
        <eastbc>-82.877684</eastbc>
        <northbc>39.880106</northbc>
        <southbc>39.876660</southbc>
      </bounding>
    </spdom>
    <keywords>
      <theme>
        <themekt>None</themekt>
        <themekey>Raster</themekey>
        <themekey>Orthophoto</themekey>
      </theme>
      <place>
        <placekt>none</placekt>
        <placekey>United States</placekey>
        <placekey>Ohio</placekey>
        <placekey>City of Columbus, OH</placekey>
      </place>
    </keywords>
    <accconst>None</accconst>
    <useconst>None</useconst>
    <ptcontac>
      <cntinfo>
        <cntorgp>
          <cntorg>OGRIP</cntorg>
        </cntorgp>
        <cntpos>GIS Manager</cntpos>
        <cntaddr>
          <addrtype>mailing and physical address</addrtype>
          <address>77 S. High St. - Rm 1990</address>
          <city>Columbus</city>
          <state>OH</state>
          <postal>43215</postal>
          <country>USA</country>
        </cntaddr>
        <cntvoice>(614) 466-4747</cntvoice>
        <cntfax>(614) 728-5297</cntfax>
      </cntinfo>
    </ptcontac>
    <secinfo>
      <secsys>Unclassified</secsys>
      <secclass>Unclassified</secclass>
      <sechandl>Unclassified</sechandl>
    </secinfo>
    <native>Microsoft Windows 7 Version 6.1 (Build 7600)</native>
  </idinfo>
  <dataqual>
    <logic>This orthophoto imagery follows the boundary of City of Columbus.</logic>
    <complete>The dataset is complete</complete>
    <posacc>
      <horizpa>
        <horizpar>The ground control will support orthoimagery meeting the new American Positional Accuracy Standards for Digital Geospatial Data (Edition 1, Version 1.0 – November 2014).  Accuracy will be reported and tested as per the Federal Geographic Data Committee (FGDC) Geospatial Positioning Accuracy Standards, Part 3:  National Standard for Spatial Data Accuracy (NSSDA) (1998).</horizpar>
      </horizpa>
    </posacc>
    <lineage>
      <procstep>
        <procdesc>The Leica ADS100 Airborne Digital Sensor is a push-broom geometry sensor, collecting 12-bit data with 12,000 pixel swath coverage with up to a 5-centimeter spatial resolution. The sensor is capable of collecting multiple spectral bands and angles simultaneously. Leica ADS100 collects seven bands of imagery simultaneously: three panchromatic CCD lines capture information in the forward, nadir and backward views from the aircraft, while four multispectral lines capture data in the red, green, blue, and near color infrared band. The imagery for this task order was acquired using the Leica ADS100 multispectral scanner. The ADS100 utilizes the Leica IPAS20 direct positioning and orientation system that is based on airborne GPS and inertial measurement unit (IMU) technology. The IPAS20 data were reduced using Leica Inertial Explorer software package. All of the source imagery was processed using the Leica XPRO software package. This package provides the capability to perform digital image processing, aerial triangulation, and image rectification. The strips of imagery were ortho rectified to newly collected LiDAR digital elevation model (DEM) data. The individual rectified strips of ortho rectified imagery were then mosaicked together to form a seamless imagery database over the entire task order area using the OrthoVista software by Inpho GmbH. The final digital orthophoto imagery (DOI) were extracted using OrthoVista.</procdesc>
        <procdate>20170323</procdate>
        <proccont>
          <cntinfo>
            <cntorgp>
              <cntorg>Woolpert, Inc.</cntorg>
            </cntorgp>
            <cntpos>Geospatial Services</cntpos>
            <cntaddr>
              <addrtype>mailing and physical address</addrtype>
              <address>4454 Idea Center Blvd.</address>
              <city>Dayton</city>
              <state>OH</state>
              <postal>45430</postal>
              <country>USA</country>
            </cntaddr>
            <cntvoice>(937) 461-5660</cntvoice>
            <cntfax>(937) 461-0743</cntfax>
            <hours>8:00 a.m. to 5:00 p.m. Eastern Time</hours>
          </cntinfo>
        </proccont>
      </procstep>
    </lineage>
  </dataqual>
  <spdoinfo>
    <direct>Raster</direct>
    <rastinfo>
      <rasttype>Pixel</rasttype>
      <rowcount>5000</rowcount>
      <colcount>5000</colcount>
    </rastinfo>
  </spdoinfo>
  <spref>
    <horizsys>
      <planar>
        <mapproj>
          <mapprojn>NAD83 HARN Ohio South ftUS</mapprojn>
          <lambertc>
            <stdparll>40.03333333333333</stdparll>
            <stdparll>38.73333333333333</stdparll>
            <longcm>-82.5</longcm>
            <latprjo>38.0</latprjo>
            <feast>1968500.0</feast>
            <fnorth>0.0</fnorth>
          </lambertc>
        </mapproj>
        <planci>
          <plance>row and column</plance>
          <coordrep>
            <absres>0.25</absres>
            <ordres>0.25</ordres>
          </coordrep>
          <plandu>survey feet</plandu>
        </planci>
      </planar>
      <geodetic>
        <horizdn>D North American 1983 HARN</horizdn>
        <ellips>GRS 1980</ellips>
        <semiaxis>6378137.0</semiaxis>
        <denflat>298.257222101</denflat>
      </geodetic>
    </horizsys>
  </spref>
  <distinfo>
    <distrib>
      <cntinfo>
        <cntorgp>
          <cntorg>OGRIP</cntorg>
        </cntorgp>
        <cntpos>GIS Manager</cntpos>
        <cntaddr>
          <addrtype>mailing and physical address</addrtype>
          <address>77 S. High St. - Rm 1990</address>
          <city>Columbus</city>
          <state>OH</state>
          <postal>43215</postal>
          <country>USA</country>
        </cntaddr>
        <cntvoice>(614) 466-4747</cntvoice>
        <cntfax>(614) 728-5297</cntfax>
      </cntinfo>
    </distrib>
    <resdesc>Downloadable Data</resdesc>
    <distliab>The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and within the limitations of the data for which it was requested and prepared, in general, and these data in particular. The related graphics are intended to aid the data user in acquiring relevant data. It is not appropriate to use the related graphics as data. Woolpert gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from a Woolpert server, and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully upon Woolpert’s computer system, no warranty, expressed or implied, is made regarding the utility of the data on another system, or for general or scientific purposes; nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data.</distliab>
    <stdorder>
      <digform>
        <digtinfo>
          <formname>TIFF</formname>
          <transize>100.0</transize>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>http://ogrip.oit.ohio.gov/ServicesData/StatewideImagery/tabid/86/Default.aspx</networkr>
              </networka>
            </computer>
          </onlinopt>
          <offoptn>
            <offmedia>Unknown</offmedia>
            <recfmt>Digital</recfmt>
          </offoptn>
        </digtopt>
      </digform>
      <fees>Unknown</fees>
    </stdorder>
  </distinfo>
  <metainfo>
    <metd>20170921</metd>
    <metc>
      <cntinfo>
        <cntorgp>
          <cntorg>OGRIP</cntorg>
          <cntper>Jeff Smith</cntper>
        </cntorgp>
        <cntpos>GIS Manager</cntpos>
        <cntaddr>
          <addrtype>mailing and physical address</addrtype>
          <address>77 S. High St. - Rm 1990</address>
          <city>Columbus</city>
          <state>OH</state>
          <postal>43215</postal>
          <country>USA</country>
        </cntaddr>
        <cntvoice>(614) 466-4747</cntvoice>
        <cntfax>(614) 728-5297</cntfax>
      </cntinfo>
    </metc>
    <metstdn>FGDC Content Standards for Digital Geospatial Metadata</metstdn>
    <metstdv>FGDC-STD-001-1998</metstdv>
    <mettc>local time</mettc>
  </metainfo>
</metadata>