Lecture 14 Figures from Gonzalez and Woods, Digital Image Processing, Second Edition, 2002.
Degradation Function Estimation Observation of a subimage Experimentation Mathematical Modeling
Observation of a subimage Choose strong signal area, assume noise is negligible, using gray level samples of object and background construct an unblurred image of same size and characteristics as blurred image.
Experimentation Image on an impulse… Fourier transform of impulse is constant so H(u,v)= G(u,v)/A A is the constant describing the strength of the image.
Chapter 5 Image Restoration
Modeling
Chapter 5 Image Restoration
Mathematical Model from ``basic’’ principles
Simple Motion Model
Chapter 5 Image Restoration
Inverse Filtering
Chapter 5 Image Restoration
Minimum MSE (Wiener) Filter
Chapter 5 Image Restoration
Chapter 5 Image Restoration
Constrained Least Squares Filter(1)
Constrained Least Squares Filter(2)
Constrained Least Squares Filter(3)
Chapter 5 Image Restoration
Chapter 5 Image Restoration