Two-dimensional signal and image processing
Two-dimensional signal and image processing
Multidimensional Digital Signal Processing
Multidimensional Digital Signal Processing
An order-recursive algorithm to solve the 3-D Yule-Walker equationsof causal 3-D AR models
IEEE Transactions on Signal Processing
A recursive algorithm for solving the normal equations of bilateralAR models
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
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There exists a causal 3-D AR process on the nonsymmetric half-space having the same autocorrelations as a noncausal 3-D AR process. A formula is presented to relate the AR coefficients of the noncausal 3-D AR process with those of the causal 3-D AR process on the nonsymmetric half-space. The 3-D Yule-Walker equations are derived for causal 3-D AR models on the nonsymmetric half-space, and a computationally efficient order-recursive algorithm is proposed to solve the 3-D Yule-Walker equations. We can easily specify a noncausal 3-D AR process from its autocorrelations using the autocorrelation equivalence relation, the formula of the AR coefficients and the order-recursive algorithm.