Novel subspace distortion measurement for efficient implementation of image vector quantiser
Lai-Man Po, Chi-Kwong Chan · Electronics Letters · 1990
An efficient distortion measure based on a novel subspace is proposed for 4 × 4 image mean residual vector quantisers (MRVQ). The dimensionality of the coder distortion measure is reduced from 16 to 4, maintaining the visual image quality. The computation complexity and memory requirements of the quantiser are significantly reduced.