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== Pixel based
A simple example of this kind of segmentation is [[Thresholding (image processing)|thresholding]] a [[grayscale]] image with a fixed threshold ''t'': each pixel ''p'' is assigned to one of two classes, ''P<sub>0</sub>'' or ''P<sub>1</sub>'', depending on whether ''I(p) < t'' or ''I(p) ≥ t''. Some other segmentation algorithms are based on segmenting images into regions of similar texture according to [[Wavelet|wavelet]] or [[Fourier transform|Fourier]] transforms.
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