Conjugate Gradient (CG)

The Conjugate Gradient (CG) is an algorithm solving linear equation systems in an iterative manner. In this notebook it used to demonstrate de-blurring of an image suffering from optical defocus.

last update: 02/05/2022

Hahne, PhD

Data preparation

At the beginning we load an picture showing the Swiss alps which crisp high frequency features. To mimic optical defocus, we convolve the ground-truth image with the Point-Spread Function (PSF), which represents the impulse response of an objective lens and is typically used to model the interferrence of propagating light waves.