Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Trellis-based R-D optimal quantization in H.263+.

J Wen, M Luttrell, J Villasenor

    IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
    |February 12, 2008
    PubMed
    Summary
    This summary is machine-generated.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Estimate renal cell carcinoma recurrence rates using electronic health records.

    ESMO real world data and digital oncology·2026
    Same author

    [Biocompatibility and anti-encrustation effect of IDP<sub>FUS</sub> coating-modified ureteral stent materials in SD rat bladder stent retention model].

    Zhonghua yi xue za zhi·2026
    Same author

    Adipose-Derived Stem Cells Pretreated With Phototherapy Promote HUVECs Migration and Angiogenesis by Mediating EYA1 Activation.

    Physiological research·2025
    Same author

    Evaluation of Recyclable Multilayer Packaging Designs Utilising Controlled Interlayer Adhesion.

    Experimental mechanics·2025
    Same author

    Epicardial adipose tissue associated with right cardiac chamber remodelling in patients with connective tissue disease evaluated by cardiac magnetic resonance: a cross-sectional study.

    Clinical radiology·2025
    Same author

    Risk factors for infection in patients undergoing hip replacement: a systematic review and meta-analysis.

    The Journal of hospital infection·2025
    Same journal

    Hyperbolic Cycle Alignment for Infrared-Visible Image Fusion.

    IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2026
    Same journal

    Learning Gaze Synthesizer via 3D-eye Controlled Diffusion and Cross-domain Feature Alignment.

    IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2026
    Same journal

    Underlying Semantic Diffusion for Effective and Efficient In-Context Learning.

    IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2026
    Same journal

    DiffRES: Unleashing Text-to-Image Diffusion Models for Generative Referring Expression Segmentation without Information Leakage.

    IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2026
    Same journal

    Location Matters: Frequency-Spatial Dual Space Adaptation for Cross-Domain Few-Shot Segmentation.

    IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2026
    Same journal

    BayeTopo: Bayesian-based Topology-guided Learning for Vascular Imaging Segmentation.

    IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2026
    See all related articles

    A new trellis-based algorithm optimizes quantization decisions in H.263+ video coding. This approach improves bitrate efficiency by 3.5% compared to standard methods.

    Area of Science:

    • Digital video compression
    • Image and video processing
    • Information theory

    Background:

    • The H.263+ video coding standard relies on quantization for compression efficiency.
    • Current implementations often make suboptimal, independent quantization decisions for coefficients within a block.
    • Rate-distortion (R-D) optimization is crucial for balancing video quality and bitrate.

    Discussion:

    • A novel trellis-based algorithm is presented for joint R-D optimum quantization in H.263+.
    • This algorithm considers all coefficients within a block simultaneously for decision-making.
    • Experimental results demonstrate significant bitrate savings.

    Key Insights:

    • The trellis-based algorithm achieves an average bitrate improvement of 3.5% at 40-50 kbps.

    Related Experiment Videos

  • Joint quantization decisions lead to superior compression performance compared to the International Telecommunications Union (ITU) Test Model.
  • This method enhances the efficiency of H.263+ video coding.

    • Outlook:

    • Potential for integration into future video coding standards.
    • Further research into adaptive trellis search strategies.
    • Application to other transform coding schemes.