VARIABLE BLOCK SIZE LAPPED TRANSFORMS - Image Processing, 1995. Proceedings., International Conference on
نویسنده
چکیده
A structure for implementing lapped transforms with time-varying block sizes is discussed. It allows full orthogonality in the transitions based on a factorization of the transfer matrix into orthogonal factors. Such an approach can be viewed as a sequence of stages with variable-block-size transforms intermediated by sampleshuffling (delay) stages. Details for a first order system are given and a design example is presented.
منابع مشابه
Variable block size lapped transforms
A structure for implementing lapped transforms with time-varying block sizes is presented which allows full orthogonality of the transient transforms. The formulation is based on a factorization of the transfer matrix into orthogonal factors. Such an approach can be viewed as a sequence of stages with variableblock-size transforms separated by sample-shu ing (delay) stages. Details and design e...
متن کاملVariable-Block-Size Lapped Transforms [Correspondence] - Signal Processing, IEEE Transactions on
A structure for implementing lapped transforms with timevarying block sizes that allows full orthogonality of the transient transforms is presented. The formulation is based on a factorization of the transfer matrix into orthogonal factors. Such an approach can be viewed as a sequence of stages with variable-block-size transforms separated by sample-shuffling (delay) stages. Details and design ...
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The general factorization of a linear-phase paraunitary filter bank (LPPUFB) is revisited. From this new perspective, a class of lapped orthogonal transforms with extended overlap (generalized linear-phase lapped orthogonal transforms (GenLOT’s)) is developed as a subclass of the general class of LPPUFB. In this formulation, the discrete cosine transform (DCT) is the order-1 GenLOT, the lapped ...
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تاریخ انتشار 2004