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Motion

  • Bernd Jähne

Abstract

In this chapter we extend our considerations from single images to image sequences. We may compare this step with the transition from still photography to motion pictures. Only in image sequences can we recognize and analyze dynamic processes. Thus the analysis of image sequences opens up far-reaching possibilities in science and engineering. A few examples serve as illustration:
  • Flow visualization is an old tool in fluid dynamics but has been used for a long time mainly for qualitative description, because manual quantitative evaluation has been prohibitively laborious. Digital image sequence analysis allows area-extended velocity data to be extracted automatically. In section 2.2.8 we discussed an example of flow visualization by particle tracking. Some results are shown in plate 4.

  • Satellite image sequences of the sea surface temperature (see section 1.2.1 and plate 1) can be used to determine near-surface ocean currents [Wahl and Simpson, 1990].

  • In the industrial environment, motion sensors based on image sequence analysis are beginning to play an important role. Their usage covers a wide spectrum starting with remote velocity measurements in industrial processes [Massen et al., 1987] to the control of autonomous vehicles and robots [Dickmanns, 1987].

Keywords

Velocity Field Image Plane Image Sequence Volume Element Surface Element 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • Bernd Jähne
    • 1
  1. 1.Scripps Institution of OceanographyUniversity of California, San DiegoLa JollaUSA

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