Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Help
Clear All

Query Builder

Query box

Help
Clear All

For additional assistance using the Custom Query please check out our Help Page

i

Rapid orthophoto development system.

Filetype[PDF-4.80 MB]


  • English
    • Details You May Also Like

    Details:

    • Creators:
    • Corporate Creators:
      Ohio State University. Center for Mapping
    • Corporate Contributors:
      United States. Federal Highway Administration
    • Subject/TRT Terms:
    • Publication/ Report Number:
      FHWA/OH-2013/6
    • Resource Type:
      Tech Report
    • Geographical Coverage:
      Ohio
    • Corporate Publisher:
      Ohio. Dept. of Transportation. Research Section
    • Abstract:
      The DMC system procured in the project represented state-of-the-art, large-format digital aerial camera systems at the start of

      project. DMC is based on the frame camera model, and to achieve large ground coverage with high spatial resolution, the

      output image is formed from four independent images acquired by four cameras. DMC procured for OCMS was carefully

      tested to assess its performance level. From test flights by ODOT, three different blocks were selected, representing different

      flying condition and flight geometry. Five methods were used for the performance evaluation, including two methods where

      self-calibration was also introduced. The analysis of the results confirmed that the DMC meets the manufacturer’s

      specification. To maintain consistent performance in normal operations, periodical calibration flights and the use of ground

      controls as check points is highly recommended. In addition to further support QA/QC, the use of automated aerial

      triangulation is also suggested.

      The main product of the ODOT Office of Mapping and CADD Services is orthophoto, which is widely used in many

      applications at ODOT and other State offices. Since ODOT primarily acquires data over the transportation network, the

      orthophoto production has some specific needs, such as dealing with bridges and occlusions, besides the general tasks of

      the orthoimage workflow. In this project, an innovative method was developed to support the orthoimage generation at

      bridges. The concept is built around the development of a precise bridge model, which is formed from the DMC imagery and

      LiDAR data. In addition, a true orthophoto generation process was implemented. The initial versions of both software tools

      installed at Office of CADD and Mapping Services for testing provided valuable feedback for algorithmic refinements.

    • Format:
      PDF
    • Funding:
      SJN 134414
    • Collection(s):
    • Main Document Checksum:
    • Download URL:
    • File Type:

    Supporting Files

    • No Additional Files

    More +

    You May Also Like

    Checkout today's featured content at rosap.ntl.bts.gov

    Version 3.26