Image Approximation from Gray Scale ``Medial Axes''
Shyuan Wang, Angela Y. Wu, Azriel Rosenfeld · IEEE Transactions on Pattern Analysis and Machine Intelligence · 1981
Several types of gray-weighted ``medial axes'' have been defined. This paper shows that one of them, the min-max medial axis, can be used to reconstruct good approximations to the original image based on a relatively small amount of information.