Projection VQ Applied to Video Sequence Encoding

This paper proposes an video sequence encoding algorithm that adopts projection scheme on wavelet transform domain of image signal. Projection scheme is applied to the residual signals which resulted from motion estimation of consecutive image frames. Wavelet decomposed residual image is encoded by the result of projection along one direction out of eight which approximates the coefficients most closely to the originally transformed coefficients. These projection data are vector quantized using separate codebooks depending on the decomposition level and orientation of decomposed of image. Experimental result reveals that proposed scheme shows excellent performance in PSNR manner and also shows good subjective quality.

Published

1996-10

Content type

Original Research

Keywords

projection, direction, vector quantization, wavelet, motion estimation

DOI

10.5594/M001259

ISBN

978-1-61482-947-8