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Impact Labs

Impact Labs. H.264 CODEC Presentation To DICOM Working Group Four Compression June 7, 2003. About Impact Labs. Founded in 1996 Headquartered in Columbia, MD (between Baltimore, MD and Washington, DC)

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Impact Labs

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  1. Impact Labs H.264 CODEC Presentation To DICOM Working Group Four Compression June 7, 2003

  2. About Impact Labs • Founded in 1996 • Headquartered in Columbia, MD (between Baltimore, MD and Washington, DC) • Specialists in Advanced Image/Video Compression and Encryption Technologies – Field-tested and Time-proven Technologies • Products for Business, Consumer and OEM Markets • Vertical Industries • Health Care • Financial / Insurance • Government / Military • Media / Entertainment

  3. About Impact Labs • Our Mission: • “To Make Storing, Transmitting and Viewing Digital Content Fast, Easy, Inexpensive and Safe.”

  4. H.264 Lineage • International Standards Organization (ISO) • Moving Picture Experts Group (MPEG) • Focused primarily on defining standards for coding of video sequences for delivery in high-bandwidth environments such as broadcast digital television and DVD • Joint Photographic Experts Group (JPEG) • JPEG (1992) • JPEG-2000 (2000) • Video Coding Experts Group (VCEG) • Began developing a vastly improved coding standard called H.26L in 1997

  5. H.264 Lineage • Joint Video Team (JVT) creates new international video coding standard • Collaboration between VCEG and MPEG • The result of two years of intensive collaboration and leading int’l. research institutions • Multiple names for this “Advanced Video Coding” • H.264 by ITU • MPEG 4 Part 10 by ISO

  6. Impact Labs H.264 Development • Key Industry Contributors • Dr. Iain Richardson, Professor- Robert Gordon University Aberdeen – World-renowned CODEC Authority • Geraint Davies, Creator and inventor of DirectX/DirectShow

  7. H.264 Development • H.264 New Key Features: • Variable macro block size • Integer block transform • Improved in-loop deblocking filter • Advantages for DICOM images? • Faster processing time? • Possible acceptable lossy quality???

  8. Impact Labs H.264 CODEC H.264 145:1 Compression JPEG 2000 145:1 Compression JPEG 85:1 Compression

  9. Impact Labs H.264 CODEC H.264 7:1 Compression H.264 50:1 Compression H.264 112:1 Compression

  10. H.264 Metrics 5,167

  11. H.264 Development • Variable macro block size • Previous standards constrained to 16x16 macro-block encoding. • H.264 allows for variable size macro-block encoding, 4x4 to 16x16. • Result- Greatly reduces macro-block artifacting (blockiness).

  12. H.264 Development • Integer block transform • The H.264 standard utilizes a new version of the DCT (Discrete Cosine Transform) • Constrains all the computations to whole numbers, no decimals at all. • Result- Greatly increases coding and decoding efficiency.

  13. H.264 Development • Improved in-loop deblocking filter • Optimized post-processing filter unique to H.264. • Removes any residual artifacting(blockiness). • Result- Smoother and improved fidelity.

  14. Impact Labs H.264 Development • Legacy of Standards Optimization • Active Role in H.264 Standards Development • Industry-leading Professionals • Innovative Complementary Media Transport Technologies

  15. Thank You! Visit us at booth 540 or www.impactlabs.com

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