A vector quantization scheme specifically designed for super high definition images is proposed. This coding scheme is organized in two phases. In the first phase, multistage vector quantization takes place in the subband domain. In the second phase, threshold block selective vector quantization is done to reduce the visible blockiness distortion. The input image has a resolution of 2048 by 2048 pixels and is first divided into four bands and decimated using vertical and horizontal filtering. In each band, the decimated image signal is quantized using multistage vector quantization. In each vector quantization stage, either a self-learning address dictionary method or a threshold block selective method is utilized. High quality and definition decoded images are obtained through this method. Its quality is examined using a super high definition image display system.
|ジャーナル||Proceedings - IEEE International Symposium on Circuits and Systems|
|出版ステータス||Published - 1990 12月 1|
|イベント||1990 IEEE International Symposium on Circuits and Systems Part 4 (of 4) - New Orleans, LA, USA|
継続期間: 1990 5月 1 → 1990 5月 3
ASJC Scopus subject areas