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 examples for a rst order system are presented.

• Type: Conference
• Year: 1995
• Where: ICIP
• Authors: Ricardo L. de Queiroz, K. Raghunath Rao
• Keywords: ICIP 1995, Image Processing, Lapped Transforms, Transient Transforms, Variableblock-size Transforms