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Reduction of Artifacts using Projections

Reduction of Artifacts using Projections. Young-Kyoo Hwang Jung-Jin Park. What is Artifacts? . Blocking Artifacts - Result in independent block process in codecs Ringing artifacts - Sharp oscillations along the edges. Blocking and Ringing Artifacts. What is projection?.

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Reduction of Artifacts using Projections

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  1. Reduction of Artifacts using Projections Young-Kyoo Hwang Jung-Jin Park

  2. What is Artifacts? • Blocking Artifacts - Result in independent block process in codecs • Ringing artifacts - Sharp oscillations along the edges

  3. Blocking and Ringing Artifacts

  4. What is projection? Projection one of methods to minimize errors

  5. Previous student’s result

  6. Previous student’s result

  7. What’s wrong? • Failed to do -45, +45 degree line processing and projection them. • Failed to find lamda parameter -> it’s nonlinear equation -> We used Newton’s method

  8. Line process

  9. Weight functions

  10. Our result

  11. Our result

  12. Further study • Required for edge enhancement against edge’s smoothing ->we tried to enhance the edges, but it resulted in enhancing artifacts • Required to simplify the algorithm

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