1 / 19

PDES in image processing

PDES in image processing. Talk at OU sigCAM Meijun Zhu. Gaussian filter. Lena picture with Gaussian noise. Experiment for Gaussian Filter. After three steps, it becomes better. After more steps, it becomes blur. Q-flow for denoise. Left side: Affine flow; Right side: Q-flow.

zaza
Download Presentation

PDES in image processing

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PDES in image processing Talk at OU sigCAM Meijun Zhu

  2. Gaussian filter • Lena picture with Gaussian noise.

  3. Experiment for Gaussian Filter • After three steps, it becomes better. • After more steps, it becomes blur.

  4. Q-flow for denoise • Left side: Affine flow; Right side: Q-flow. • More picture and comparison can be found at • http://www.math.ou.edu/~yni/flow.html

  5. Active Contour • The main goal here is to find the boundary of interesting area:

  6. Discussion

  7. Discussion • Psychological questions: illusions. • Experiments.

  8. Other applications • Can the flow be used to reduce illusions?

  9. Real problems • Satellite images • Medical images • Signal processing • Nonlinear expression (comparing with Wavelets, etc.)

More Related