NOVEL INTERPOLATIVE VECTOR QUANTIZATION TECHNIQUE FOR IMAGE-CODING

An innovative technique for the interpolative vector quantisation (IVQ ) of an image is developed. The technique employs a new split-and-merg e algorithm which selects a near-to-optimal set of sampling points for the IVQ. Experimental results show that, under the same bit rate, ove r 0.5 dB improvement is achieved by the proposed method when compared with the results obtained by the traditional fixed sampling point inte rpolation in terms of peak signal-to-noise ratio (PSNR).