資訊理論與視訊壓縮 mpeg 7

743 views

Published on

Published in: Technology, Business
  • Be the first to comment

  • Be the first to like this

資訊理論與視訊壓縮 mpeg 7

  1. 1. Introduction to the SpecialIssue on MPEG-7報告人 : 薛智豪
  2. 2. OutlineWhat is MPEG-7?Why MPEG-7?Overview of MPEG-7 StandardDescription toolsDescriptionsDescriptorsApplications
  3. 3. What is MPEG-7?"Multimedia Content DescriptionInterface”Providing meta-data for multimediaSupport as broad a range ofapplications as possible.Why not MPEG-5/6 ?
  4. 4. What is MPEG-7?
  5. 5. What is MPEG-7?
  6. 6. Why MPEG-7?“found, retrieved, accessed, filtered andmanaged. ”Past: poverty of the digital multimediasources-> Simplicity of the access mechanismsNow: growing amount of audiovisualinformation-> Difficult to identifying and managing.
  7. 7. DescriptionproductionStandarddescriptionDescriptionconsumptionScope of MPEG -7Normative part ofMPEG-7 standardOverview of MPEG-7 Standard
  8. 8. Description tools
  9. 9. Description tools
  10. 10. DescriptionsText Image VoiceLow leveldescriptionFontTypefaceParagraphColorGrainShapeToneTimbreHigh leveldescriptionCategoryPropertyThinkingImplicationsObjectKeywordEmotions
  11. 11. DescriptorsVisual Descriptors• Color Descriptors• Texture Descriptors• Shape Descriptors• Motion Descriptors for Video
  12. 12. DescriptorsRegion-based Descriptor
  13. 13. DescriptorsContour-Based Descriptor• It is based on Curvature Scale-Space (CSS)representation
  14. 14. DescriptorsContour-BasedDescriptor
  15. 15. DescriptorsRegion-based VS Contour-Based
  16. 16. DescriptorsCamera Motion DescriptorTrack leftTrack rightBoom upBoom downDollybackwardDollyforwardPan rightPan leftTilt upTilt downRoll
  17. 17. Applications
  18. 18. ApplicationsPull• Client Queries -> Descriptions repository ->Matched DsPush• Filter descriptions -> Programmed actions
  19. 19. Referenceshttp://www.cmlab.csie.ntu.edu.tw/mpeg4workshop/MPEG7%20Introduction.files/frame.htmhttp://mpeg.telecomitalialab.com/standards/mpeg-7/mpeg-7.htmhttp://newmodel.pixnet.net/blog/post/24882372-mpeg-7http://debut.cis.nctu.edu.tw/~ching/The_Essential_Of_My_Reading/TechnicalIssue/%5BTechniqueIssue%5D%20Matching%20Shapes%20With%20Self-Intersections.htmlhttp://en.wikipedia.org/wiki/MPEG-7

×