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Digital Image Stabilization презентация
Содержание
- 1. Digital Image Stabilization
- 2. Outline Introduction Basic architecture of DIS MVI method for DIS Future work
- 3. Introduction An image stabilization system manages to
- 4. Basic architecture of DIS Pre-processing Stabilization Video Encoder Video Decoder Input Output Stabilized Input
- 5. Basic architecture of DIS stabilization-aided encoder Stabilization Video Encoder Video Decoder Input Output
- 6. Basic architecture of DIS stabilization-aided decoder Stabilization Video Encoder Video Decoder Input Output
- 7. MVI Method for DIS MVI : Motion
- 8. New Algorithm and Architecture of Digital Image
- 9. New Algorithm and Architecture of Digital Image
- 10. A general structure of DIS system with
- 11. Pre-Processing Pre-processing Motion Estimation Frame Register Motion Decision Motion Compensation Frame Memory Stabilized images
- 12. Pre-Processing Block Matching over Bit-Planes
- 14. Pre-Processing Block Matching over Gray-Code Bit-Planes
- 16. Motion Estimation Pre-processing Motion Estimation Frame Register Motion Decision Motion Compensation Frame Memory Stabilized images
- 17. Motion Estimation
- 18. Motion Estimation
- 19. Motion Decision Pre-processing Motion Estimation Frame Register Motion Decision Motion Compensation Frame Memory Stabilized images
- 20. Motion Decision (Lack-of-Feature Condition)
- 21. Motion Decision (Lack-of-Feature Condition)
- 22. Motion Decision (Lack-of-Feature Condition)
- 23. Motion Decision (Existence of Moving Objects) Random-like motion temporally correlated motion
- 24. Motion Decision (Existence of Moving Objects)
- 25. Motion Decision (Intentional Panning Condition) If 80%
- 26. Motion Decision (Optical Zooming Condition)
- 27. Motion Decision (Spatial Noise Checking of Noise Level)
- 28. Procedure of Motion Decision
- 29. Procedure of Motion Decision
- 30. Motion Compensation Frame Motion Vector (FMV) Accumulated Motion Vector (AMV) Motion Compensation
- 31. Simulation Result
- 32. Future work Understanding mpeg4 framework in order
Outline Introduction Basic architecture of DIS MVI method for DIS Future work
Слайд 3Introduction
An image stabilization system manages to remove unwanted movement form an
image sequence
Previous image stabilization system
accelerometers, gyros, mechanical dampers ,
angular velocity sensors…………..
We prefer to use DIS
Previous image stabilization system
accelerometers, gyros, mechanical dampers ,
angular velocity sensors…………..
We prefer to use DIS
Слайд 4Basic architecture of DIS
Pre-processing
Stabilization
Video Encoder
Video Decoder
Input
Output
Stabilized Input
Слайд 5Basic architecture of DIS
stabilization-aided encoder
Stabilization
Video Encoder
Video Decoder
Input
Output
Слайд 6Basic architecture of DIS
stabilization-aided decoder
Stabilization
Video Encoder
Video Decoder
Input
Output
Слайд 7MVI Method for DIS
MVI : Motion Vector Integration
Basic idea :
Using
some propose method to find reliable local motion vector(LMV)
Calculate the global motion vector(GMV) form LMV.
Integrating the previous frame GMV and current frame GMV to calculate AMV.
Using AMV to compensate current frame to be stabilized frame.
Reference paper [1-4]
Calculate the global motion vector(GMV) form LMV.
Integrating the previous frame GMV and current frame GMV to calculate AMV.
Using AMV to compensate current frame to be stabilized frame.
Reference paper [1-4]
Слайд 8New Algorithm and Architecture of Digital Image stabilization System
CCD
A/D
DIS for FM
Video
Encoder
Block
diagram of a digital video camera with DIS system.
Слайд 9New Algorithm and Architecture of Digital Image stabilization System
Lack of features
Existence
of moving objects
Intentional panning
Existence of repeated patterns
Intentional zooming
Low signal-to-noise ratio
Large movement out of the searching range of block matching
Complicated Motion (e.g. rotatory motion)
Intentional panning
Existence of repeated patterns
Intentional zooming
Low signal-to-noise ratio
Large movement out of the searching range of block matching
Complicated Motion (e.g. rotatory motion)
Слайд 10A general structure of DIS system with frame memory
Pre-processing
Motion Estimation
Frame Register
Motion
Decision
Motion Compensation
Frame Memory
Stabilized images
Слайд 11Pre-Processing
Pre-processing
Motion Estimation
Frame Register
Motion Decision
Motion Compensation
Frame Memory
Stabilized images
Слайд 16Motion Estimation
Pre-processing
Motion Estimation
Frame Register
Motion Decision
Motion Compensation
Frame Memory
Stabilized images
Слайд 19Motion Decision
Pre-processing
Motion Estimation
Frame Register
Motion Decision
Motion Compensation
Frame Memory
Stabilized images
Слайд 25Motion Decision
(Intentional Panning Condition)
If 80% of the VALID_LMV are detected as
temporally correlated motion, we consider that the camera is under a panning condition and no motion compensation is needed Otherwise, we assume that these temporally correlated motion vectors are caused by some moving objects in the image.
Слайд 30Motion Compensation
Frame Motion Vector (FMV)
Accumulated Motion Vector (AMV)
Motion Compensation
Слайд 32Future work
Understanding mpeg4 framework in order to write my propose method
program in it.
stabilization-aided encoder
stabilization-aided encoder
Stabilization
Video Encoder
Video Decoder
Input
Output
