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Andrews, H. C.

Publications and source records attributed to Andrews, H. C..

Performance measures for transform data coding.

This paper develops performance criteria for evaluating transform data coding schemes under computational constraints. Computational constraints that conform with the proposed basis-restricted model give rise to suboptimal coding efficiency characterized by a rate-distortion relation R(D) similar in form to the theoretical rate-distortion function. Numerical examples of this performance measure are presented for Fourier, Walsh, Haar, and Karhunen-Loeve transforms.

Pearl, J.

Hadamard transform image coding.

Fourier transform algorithm introduction leading to image coding technique with image transformed by Hadamard matrix operator

Andrews, H. C.

Fourier coding of images

Fourier transform coding and transmission of two dimensional images from far ranging space probes

Andrews, H. C.