NUCLEAR PHYSICS; STUDY RESULTS FROM D.G. ASATRYAN ET AL PROVIDE NEW INSIGHTS INTO NUCLEAR PHYSICS
July 22, 2008
"A new computational approach to the edge-detection problem, based
on the continuous extension of discrete cosine transform (CEDCT)
technique is proposed. This technique has some attractive properties,
and other things being equal, it has more precise results than the
usual discrete Fourier or discrete cosine transforms, especially at
the intermediate points," scientists writing in the journal Physics
of Atomic Nuclei report (see also Nuclear Physics).
"That is why this technique allows one to estimate numerically a
finite number of a derivatives of a discrete set of multidimensional
points, using some specified properties of CEDCT. Because of using
the spectrum of a given set of points, this approach is applicable
to a wide area of signal-and image-processing problems. The results
obtained by the proposed approach are compared with the well-known
and widely used Canny algorithm," wrote D.G. Asatryan and colleagues.
The researchers concluded: "Some 1D and 2D numerical examples are
Asatryan and colleagues published their study in Physics of Atomic
Nuclei (Edge-detection algorithm based on DCT continuous extension
technique. Physics of Atomic Nuclei, 2008;71(5):795-799).