PROGRESS IN THE SPECIFICATION AND ANALYSIS OF IMAGE QUALITY

In the four years since the XII Congress for Photogrammetry OTF/MTF procedures hve been successfully demonstrated for the evaluation of photographic and electro-optical sensor system performance, and "Guidelines for Measuring Camera System MTF's" have been prepared. The reliability of predicted and measured photographic system MTF's is influenced by variations in component MTF's, non-linearity of the photographic process, target fidelity, and microdensitometer parameters. Generally, however, predicted MTF's have been found to correspond to within 10 to 15 percent of measured values, and this is adequate for system evaluation purposes. Specifications of performance for the current and planned Landsat sensors are considered in terms of MTF, IFOV, and EIFOV and are compared to Skylab photographic systems. Based on these analyses, it appears that the 30 m IFOV planned for the Thermatic Mapper of the Landsat Follow-On program will result in images of comparable quality to those recorded by the Skylab S-190A MPF. Because of rapid developments in sensor system technology, the different measures of performance, and the requirement to relate image quality to photogrammetric tasks, the formation of an Image Quality Working Group is recommended.

  • Availability:
  • Supplemental Notes:
    • Paper invited at the 13th Congress for Photogrammetry, Helsinki, Finland, 1976.
  • Corporate Authors:

    American Society of Photogrammetry

    105 North Virginia Avenue
    Falls Church, VA  USA  22046
  • Authors:
    • Welch, R
  • Publication Date: 1977-6

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Filing Info

  • Accession Number: 00164050
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 9 1977 12:00AM