Corrections to `Design of two-dimensional digital filters by using the singular value decomposition´ (Oct 1987 1191-1198)

In the above-titled paper (see ibid., vol. CAS-34, p.1191-1198, Oct. 1987) there are some errors in Tables I and II. Unfortunately, the computer outputs for the original designs were not saved, and to be able to correct the error, new designs were carried out for certain functions. The new designs are slightly different from the original ones owing to differences in the initialization of the optimization algorithms. Consequently, the data given in Table II and the 3-D plots are also revised