Efficient encoding/decoding in the decomposition and recomposition of a high resolution image utilizing its low resolution replica.,申请号EP19890308258-传众专利搜索

Efficient encoding/decoding in the decomposition and recomposition of a high resolution image utilizing its low resolution replica.

申请公布号：EP0400240(A2)

申请号：EP19890308258

申请日期：1989.08.15

申请公布日期：1990.12.05

申请人：

AMERICAN TELEPHONE AND TELEGRAPH COMPANY

发明人：CHAMZAS, CHRISTODOULOS;DUTTWEILER, DONALD L.

分类号：H04N7/26;G06T3/40;G06T9/00;H04N1/41;H04N1/411;H04N1/417;H04N7/00;H04N7/015;H04N19/00

主分类号：H04N7/26

摘要：<p>More efficient encoding/decoding in decomposing and recomposing a high resolution image is obtained by employing a unique prediction arrangement. The prediction arrangement determines whether high resolution pixels to be recomposed from low resolution pixels from a low resolution replica of the high resolution are so-called typically predictable or non-typically predictable by using general prediction rules. The general prediction rules are also employed to determine if any of the typically predictable high resolution pixels would be improperly recomposed. Such high resolution pixels which would be improperly recomposed are identified as exceptions. If is noted that so-called supplemental information is required to properly recompose non-typically predictable pixels and typically predictable pixels which are identified as exceptions. To this end, exceptions accompany the low resolution pixel for which the corresponding high resolution pixels would otherwise be improperly recomposed.</p>