Digital Image Processing - Chapter 3: Image Enhancement - Nguyen Viet Dung

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Objective of Image Enhancement: to process an image so that the processed image is more suitable than the original image for a specific application.

• Relation of Enhancement and Restoration : in image restoration, an original image

has been degraded and the objective is to make the processed image resemble the

original image as much as possible.

Classification of Enhancement Techniques Point Operations : on each pixel, the input gray level is mapped into a new one. Sapatial Operations : spatial filtering Transform Operations : manipulation in transform domain