Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of...
-
Upload
ashlynn-fields -
Category
Documents
-
view
228 -
download
0
Transcript of Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of...
![Page 1: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/1.jpg)
Chapter 7
Case Study 1: Image Deconvolution
![Page 2: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/2.jpg)
Different Types of Image Blur• Defocus blur --- Depth of field effects• Scene motion --- Objects in the scene moving• Camera shake --- User moving hands
![Page 3: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/3.jpg)
Image formation model: Convolution
![Page 4: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/4.jpg)
Blind vs. non-blind deconvolution
![Page 5: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/5.jpg)
Image deconvolution is ill-posed
![Page 6: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/6.jpg)
Why is this hard?
![Page 7: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/7.jpg)
Case study 1: Deblurring with Blind Deconvolution
![Page 8: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/8.jpg)
Probabilistic Model of Image Formation
![Page 9: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/9.jpg)
Deconvolution with prior
![Page 10: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/10.jpg)
Likelihood P(Y | K, X)
![Page 11: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/11.jpg)
Image prior P(X): Use parametric model (mixture of Gaussians) of sharp image statistics
Blurry images have different statistics
![Page 12: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/12.jpg)
Blur prior P(K): Positive and Sparse
![Page 13: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/13.jpg)
The obvious thing to do: a MAP Solver
No success!
![Page 14: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/14.jpg)
Deconvolution with prior using Variational Bayesian approach
![Page 15: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/15.jpg)
Deconvolution with prior using Variational Bayesian approach
![Page 16: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/16.jpg)
Preprocessing
![Page 17: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/17.jpg)
Initialization
![Page 18: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/18.jpg)
Inferring the kernel: multiscale method
![Page 19: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/19.jpg)
Image Reconstruction
![Page 20: Chapter 7 Case Study 1: Image Deconvolution. Different Types of Image Blur Defocus blur --- Depth of field effects Scene motion --- Objects in the scene.](https://reader030.fdocuments.in/reader030/viewer/2022013115/56649e995503460f94b9c84c/html5/thumbnails/20.jpg)
Case study 2: Motion deblurringfrom a single image