Method and system for blind Karhunen-Loeve transform coding

Details Method and system for blind Karhunen-Loeve transform coding Method and system for blind Karhunen-Loeve transform coding

2006-09-05

2006-09-05

Kim, Kevin (Department: 2611)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C704S203000

Reexamination Certificate

active

07103101

ABSTRACT:
A method, system, and computer program product for blind Karhunen-Loeve transform (KLT) coding is disclosed, wherein KLT coefficients and possibly additional information are transmitted without transmitting KLT basis vectors. Instead the KLT basis vectors are estimated at both the transmitter and the receiver. In particular, the KLT transform coefficients are calculated based on an original signal frame, quantized, encoded, and transmitted. The transmitted KLT coefficients are received, decoded, and transformed into a reconstructed original signal frame by the receiver. Exemplary embodiments include a KLT coder in which a search direction vector is initially set to an arbitrary vector, such as a white noise vector, a KLT coder which selects a search direction vector from a set of search direction vectors in a codebook and a KLT coder for an original signal frame with an unknown signal subspace dimension.

REFERENCES:
patent: 6152883 (2000-11-01), Blanchett et al.
patent: 6539103 (2003-03-01), Panin et al.
patent: 6539366 (2003-03-01), Doyle et al.
Vivek K. Goyal, et al., Universal Transform Coding Based On Backward Adaptation, pp. 1-5.
Vivek K. Goyal, et al., Transform Coding with Backward Adaptive Updates, IEEE Transactions on Information Theory, vol. 46, No. 4, Jul. 2000, pp. 1623-1633.
Vivek K. Goyal, et al., Transform Coding Using Adaptive Bases And Quantization, pp. 1-2.

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