What is Anisotropic Diffusion

In image processing and computer vision, anisotropic diffusion, also called Perona-Malik diffusion, is a technique aiming at reducing image noise without removing significant parts of the image content, typically edges, lines or other details that are important for the interpretation of the image. Anisotropic diffusion resembles the process that creates a scale space, where an image generates a parameterized family of successively more and more blurred images based on a diffusion process. Each of the resulting images in this family are given as a convolution between the image and a 2D isotropic Gaussian filter, where the width of the filter increases with the parameter. This diffusion process is a linear and space-invariant transformation of the original image. Anisotropic diffusion is a generalization of this diffusion process: it produces a family of parameterized images, but each resulting image is a combination between the original image and a filter that depends on the local content of the original image. As a consequence, anisotropic diffusion is a non-linear and space-variant transformation of the original image.

How you will benefit

(I) Insights, and validations about the following topics:

Chapter 1: Anisotropic diffusion

Chapter 2: Fick's laws of diffusion

Chapter 3: Diffusion equation

Chapter 4: Heat equation

Chapter 5: Navier-Stokes equations

Chapter 6: Total variation

Chapter 7: Divergence

Chapter 8: Laplace operator

Chapter 9: Curl (mathematics)

Chapter 10: Divergence theorem

(II) Answering the public top questions about anisotropic diffusion.

(III) Real world examples for the usage of anisotropic diffusion in many fields.

Who this book is for

Professionals, undergraduate and graduate students, enthusiasts, hobbyists, and those who want to go beyond basic knowledge or information for any kind of Anisotropic Diffusion.

Image Processing