公开(公告)号：US09888246B2

公开(公告)日：2018-02-06

申请号：US14492726

申请日：2014-09-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yin-ji Piao

IPC: H04N19/176 ,  H04N19/96 ,  H04N19/119 ,  H04N19/146 ,  H04N19/30

CPC classification number: H04N19/176 ,  H04N19/119 ,  H04N19/146 ,  H04N19/30 ,  H04N19/96

Abstract: A scalable video encoding method includes splitting a lower-layer image into a maximum coding unit, and encoding the lower-layer image based on coding units having a tree structure obtained by hierarchically splitting the maximum coding unit; splitting a maximum coding unit of an upper-layer image corresponding to the maximum coding unit of the lower-layer image into coding units having the tree structure, based on a split structure of the maximum coding unit of the lower-layer image; determining a structure of a prediction unit included in the coding units of the upper-layer image corresponding to the coding units of the lower-layer image, based on structure information indicating a structure of the prediction unit included in the coding units of the lower-layer image; and determining whether to split the prediction unit included in the coding units of the upper-layer image by comparing a first cost to a second cost.

公开(公告)号：US20140269928A1

公开(公告)日：2014-09-18

申请号：US14355439

申请日：2012-10-31

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yin-ji Piao ,  Jung-hye Min

IPC: H04N19/60 ,  H04N19/91

CPC classification number: H04N19/60 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/91

Abstract: Provided are a method and apparatus for determining a context model for entropy encoding and decoding of a transformation coefficient. According to the method and apparatus, a context set index ctxset is obtained based on color component information of a transformation unit, a location of a current subset, and whether there is a significant transformation coefficient having a value greater than a first critical value in a previous subset, and a context offset c1 is obtained based on a length of a previous transformation coefficient having consecutive 1s. Also, a context index ctxids for entropy encoding and decoding of a first critical value flag is determined based on the obtained context set index and the context offset.

Abstract translation: 提供一种用于确定变换系数的熵编码和解码的上下文模型的方法和装置。 根据该方法和装置，基于变换单元的颜色分量信息，当前子集的位置以及是否存在具有大于第一临界值的值的显着变换系数来获得上下文集索引ctxset 前一子集，并且基于具有连续1s的先前变换系数的长度获得上下文偏移量c1。 此外，基于获得的上下文集索引和上下文偏移来确定用于第一临界值标志的熵编码和解码的上下文索引ctxid。