I am reading the Digital Image Processing book by Gonzalez and i can't seem to understand Bottom-hat transformation. Can anyone explain it to me in easy terms?
The explanation in Wikipedia for Top-hat transform - Properties seems pretty simple, for the bottom-hat, another name for the black top-hat.
The black top-hat returns an image, containing the "objects" or "elements" that:
- are "smaller" than the structuring element,
- are darker than their surroundings.