公开(公告)号：US20150036747A1

公开(公告)日：2015-02-05

申请号：US14444374

申请日：2014-07-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Taewoo OH ,  Kibom KIM

IPC: H04N19/51 ,  H04N19/89

CPC classification number: H04N19/52 ,  H04N19/46 ,  H04N19/521 ,  H04N19/895

Abstract: An encoding apparatus and method for concealing an error in a video frame are provided. The encoding apparatus for concealing an error in a video frame includes a vector computation unit, a difference computation unit, and an information insertion unit. The vector computation unit computes a predicted motion vector (pMV) and a real motion vector (rMV) using a target macro block of a current frame and a motion-compensated block of a previous frame. The difference computation unit calculates a motion vector difference (MVD) using a difference between the pMV and the rMV. The information insertion unit inserts an information bit, including the MVD, into quantized discrete cosine transform (QDCT) coefficients of the video frame.

Abstract translation: 提供了一种用于隐藏视频帧中的错误的编码装置和方法。 用于隐藏视频帧中的错误的编码装置包括矢量计算单元，差分计算单元和信息插入单元。 矢量计算单元使用当前帧的目标宏块和前一帧的运动补偿块来计算预测运动矢量（pMV）和实际运动矢量（rMV）。 差分计算单元使用pMV和rMV之间的差计算运动矢量差（MVD）。 信息插入单元将包括MVD的信息位插入到视频帧的量化离散余弦变换（QDCT）系数中。