TU Wien:Video Analyse VO (Gelautz)/Prüfung 2023-06-07

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Block Matching[Bearbeiten | Quelltext bearbeiten]

  • Describe Block Matching algorithm with Pseudocode
  • What are the parameters of that algorithm, and what do they influence?
  • In which areas of an image does Block Matching not give the best results?

Optical Flow[Bearbeiten | Quelltext bearbeiten]

  • What is the difference between Optical Flow and 2D motion?
  • What are the differences between Lucas-Kanade and Horn-Schnuck?
  • How can Optical Flow be evaluated?

Bilateral Filter[Bearbeiten | Quelltext bearbeiten]

  • Explain how a Bilateral Filter works
  • Give an example where the two 1D filters (vertical + horizontal) produce a different result than a 2D filter.

Cost Volume[Bearbeiten | Quelltext bearbeiten]

  • What is Cost Volume?
  • How can it be used to divide an image into foreground and background based on the colors?