Hilbert transform in image processing
Abdus Salam · 2003
Generally, the Hilbert transform plays an important role in dealing with analytical functions. Its main contribution to the signal processing era is to change electrical signals to be of low-pass style instead of band-pass. Image signals are commonly considered as of electrical nature and thus committed to this concept. The Fourier spectrum of images can be contributed to the Hilbert transform to yield /spl plusmn/90/spl deg/-phase shift in both sides of the spectrum. One dimensional Hilbert transform can be utilized to handle image signals in TVs and videos transmissions, while on the other hand, two dimensional Hilbert transform should be adopted in digitized and off-line imaging applications. The prime concern of this paper is to bring focus on these concepts by using simulations.