Patent ID: 8428143
Filing Date: 2013-04-23
Classification: H04N

Abstract:
1. A decoder for decoding an encoded precision-scalable data stream encoding a predetermined picture, the encoded precision-scalable data stream including first precision-encoded data having the predetermined picture encoded therein with a first precision by treating a predetermined portion of the predetermined picture a first one of frame-wise and field-wise, higher precision information representing second precision encoded data having the predetermined portion encoded therein with a second precision higher than the first precision by treating the predetermined portion a second one of frame-wise and field-wise, or refinement information enabling refining the first precision-encoded data to obtain the second precision-encoded data, and indication information indicating an absence or existence of a change in the frame-/field-wise treatment between the first precision-encoded data and the second precision-encoded data, the decoder comprising: a checker for checking the indication information as to whether same indicates a change in the frame-/field-wise treatment of the predetermined portion between the first precision-encoded data and the second precision-encoded data; an arranger for, if the indication information indicate the frame-/field-wise treatment change, disregarding, at least partially, the first precision-encoded data with respect to the predetermined portion and arranging, instead, the second precision-encoded data as data for decoding, or, based on the higher precision information, refining the first precision-encoded data to obtain the second precision-encoded data and arranging the obtained second precision-encoded data as data for decoding; and a decoder for decoding the arranged data for decoding by treating the predetermined portion of the predetermined picture the one of frame-wise or field-wise to reconstruct the predetermined picture with the second precision.