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Related Experiment Videos

Generalized interframe vertex-based shape encoding scheme for video sequences.

K J Kim1, J Y Suh, M G Kang

  • 1Serome Technol. Lab., Seoul.

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
|February 12, 2008
PubMed
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This study introduces a novel boundary encoding scheme that efficiently removes temporal redundancy in video sequences. The new method achieves a lower bit-rate compared to conventional algorithms by optimizing vertex selection in directed acyclic graphs (DAGs).

Area of Science:

  • Computer Vision
  • Digital Signal Processing
  • Video Compression

Background:

  • Shape coding is crucial for image manipulation and object-based video coding.
  • Conventional boundary coding methods struggle to eliminate temporal redundancy effectively.
  • Efficiently encoding object boundaries minimizes data while preserving shape fidelity.

Purpose of the Study:

  • To develop an advanced boundary encoding scheme for video sequences.
  • To significantly reduce bit-rate by addressing temporal redundancy between frames.
  • To improve the efficiency of object-based video coding.

Main Methods:

  • Approximating object boundaries with polygons for efficient encoding.
  • Developing a new scheme to remove temporal redundancy between successive video frames.

Related Experiment Videos

  • Utilizing directed acyclic graphs (DAGs) for interframe vertex selection, including a simplified graph for reduced computation.

    • Main Results:

    • The proposed scheme effectively removes temporal redundancy between consecutive frames.
    • Achieved a lower bit-rate compared to existing conventional boundary encoding algorithms.
    • Demonstrated efficient vertex selection through minimum cost path finding in DAGs.

    Conclusions:

    • The novel boundary encoding scheme offers superior performance in video compression.
    • Efficiently encoding shape information with reduced temporal redundancy is key to lower bit-rates.
    • The DAG-based approach provides an effective solution for interframe vertex selection in video processing.