This is a point operation that creates binary images from gray-level ones by turning all pixels below some threshold to zero and all pixels above that threshold to one, as shown in the following screenshot:
If g(x, y) is a thresholded version of f(x, y) at some global threshold T, then the following can be applied:
Why do we need a binary image? A few reasons are, for example, that we may be interested in separating an image into foreground and background; that the image is to be printed with a black and white printer (and all ...
