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Study of dynamical processes with tensor-based spatiotemporal image processing techniques

  • B. Jähne
  • H. Haußecker
  • H. Scharr
  • H. Spies
  • D. Schmundt
  • U. Schurr
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1407)

Abstract

Image sequence processing techniques are used to study exchange, growth, and transport processes and to tackle key questions in environmental physics and biology. These applications require high accuracy for the estimation of the motion field since the most interesting parameters of the dynamical processes studied are contained in first-order derivatives of the motion field or in dynamical changes of the moving objects. Therefore the performance and optimization of low-level motion estimators is discussed. A tensor method tuned with carefully optimized derivative filters yields reliable and dense displacement vector fields (DVF) with an accuracy of up to a few hundredth pixels/frame for real-world images. The accuracy of the tensor method is verified with computer-generated sequences and a calibrated image sequence. With the improvements in accuracy the motion estimation is now rather limited by imperfections in the CCD sensors, especially the spatial nonuniformity in the responsivity. With a simple two-point calibration, these effects can efficiently be suppressed. The application of the techniques to the analysis of plant growth, to ocean surface microturbulence in IR image sequences, and to sediment transport is demonstrated.

Keywords

Image Sequence Optical Flow Motion Estimation Structure Tensor Motion Field 
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 1998

Authors and Affiliations

  • B. Jähne
    • 1
    • 2
    • 4
  • H. Haußecker
    • 1
  • H. Scharr
    • 1
  • H. Spies
    • 1
  • D. Schmundt
    • 1
    • 3
  • U. Schurr
    • 3
  1. 1.Research Group Image Processing, Interdisciplinary Center for Scientific ComputingHeidelberg UniversityHeidelberg
  2. 2.Institute for Environmental PhysicsHeidelberg UniversityHeidelberg
  3. 3.Institute of BotanyHeidelberg UniversityHeidelberg
  4. 4.Scripps Institution of OceanographyUniversity of CaliforniaSan Diego La JollaUSA

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