Lecture 14 Figures from Gonzalez and Woods, Digital Image Processing, Second Edition, 2002.

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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