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Rational approximation of three-dimensional digital filters

✍ Scribed by Takao Hinamoto; Takashi Hamanaka; Sadao Maekawa

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
511 KB
Volume
323
Category
Article
ISSN
0016-0032

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✦ Synopsis

Two techniques are developed for approximating a given three-dimensional (3-D) digitalhher by a 3-D rational function. The one is by a general 3-D rational function and the other by a 3-D rationalfunction which is separable in the denominator. Each technique relies on the use of mixedjrst and second information, in the form of a finite portion of the impulse response and its autocorrelation sequence. The approximation is performed by solving a set of linear equations. The separable-denominator approximation is more advantageous due to the guaranteed stability and reduced amount of calculations.

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