公开(公告)号：EP0800743A1

公开(公告)日：1997-10-15

申请号：EP96929878.0

申请日：1996-08-27

Applicant: MOTOROLA, INC.

Inventor： BRAILEAN, James, C. ,  O'CONNELL, Kevin, J. ,  BANHAM, Mark, R. ,  LEVINE, Stephen, N.

IPC: H04N7

CPC classification number: H04N19/507 ,  H04N19/51 ,  H04N19/895

Abstract: A method (100, 200) and device (300, 400, 600) for containing and concealing errors occurring in a transmitted video bitstream is disclosed. Using a plurality of predetermined scanning patterns (500), particular macroblocks are chosen per frame to be transmitted as intra-macroblocks. Degradation of visual quality that is due to an extended error burst is efficiently limited (110). Concealment of areas within a video sequence that are affected by short error bursts and/or random errors is achieved by estimating lost macroblock information using remaining uncorrupted macroblocks (112, 200). For each such lost macroblock, predictions of the intensity information are generated using candidate motion vectors from selected uncorrupted neighboring macroblocks (208), and the candidate motion vector that produces the least mean-squared difference between luminance values at the boundary between the predicted macroblock and the neighboring macroblocks is selected for the concealment (210).

公开(公告)号：EP0800684A1

公开(公告)日：1997-10-15

申请号：EP96929873.0

申请日：1996-08-27

Applicant: MOTOROLA, INC.

Inventor： BANHAM, Mark, R. ,  BRAILEAN, James, C. ,  LEVINE, Stephen, N. ,  O'CONNELL, Kevin, J. ,  KATSAGGELOS, Aggelos, K.

IPC: G06T9 ,  H04N7 ,  H04N11

CPC classification number: H04N11/042 ,  H04N19/503

Abstract: The present invention provides a method (100, 700), device (400, 800) and microprocessor (500) for performing a computationally efficient iterative expansion of a displaced frame difference, DFD, image over a predetermined dictionary of modulated Gaussian functions for the purposes of video compression. The iterative expansion described in this invention decomposes the DFD image into a set of coefficients which represent the perceptually important areas of a video frame in a compact way. The resulting method, device and microprocessor serve to provide a means for very low bit rate coding/decoding of a video sequence.

公开(公告)号：WO2009042340A3

公开(公告)日：2009-04-02

申请号：PCT/US2008/074602

申请日：2008-08-28

Applicant: MOTOROLA, INC. ,  GANDHI, Bhavan, R. ,  METCALF, Crysta, J. ,  O'CONNELL, Kevin, J. ,  TASKIRAN, Cuneyt, M.

Inventor： GANDHI, Bhavan, R. ,  METCALF, Crysta, J. ,  O'CONNELL, Kevin, J. ,  TASKIRAN, Cuneyt, M.

IPC: H04N7/24 ,  H04N7/26

Abstract: A method, apparatus, and electronic device for processing video data are disclosed. A video capture mechanism (202) may capture the video data. A key frame extractor (204) may extract a key frame from the video data automatically based on a set of criteria. A video encoder (206) may encode the video data with a key frame identifier.

公开(公告)号：WO1997016016A1

公开(公告)日：1997-05-01

申请号：PCT/US1996014122

申请日：1996-08-27

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  BRAILEAN, James, C. ,  O'CONNELL, Kevin, J. ,  BANHAM, Mark, R. ,  LEVINE, Stephen, N.

IPC: H04N01/417

CPC classification number: H04N19/507 ,  H04N19/51 ,  H04N19/895

Abstract: A method (100, 200) and device (300, 400, 600) for containing and concealing errors occurring in a transmitted video bitstream is disclosed. Using a plurality of predetermined scanning patterns (500), particular macroblocks are chosen per frame to be transmitted as intra-macroblocks. Degradation of visual quality that is due to an extended error burst is efficiently limited (110). Concealment of areas within a video sequence that are affected by short error bursts and/or random errors is achieved by estimating lost macroblock information using remaining uncorrupted macroblocks (112, 200). For each such lost macroblock, predictions of the intensity information are generated using candidate motion vectors from selected uncorrupted neighboring macroblocks (208), and the candidate motion vector that produces the least mean-squared difference between luminance values at the boundary between the predicted macroblock and the neighboring macroblocks is selected for the concealment (210).

Abstract translation: 公开了一种用于包含和隐藏发送的视频比特流中出现的错误的方法（100,200）和装置（300,400,600）。 使用多个预定扫描图案（500），每帧要选择特定的宏块作为宏块间传输。 由于扩展错误突发造成的视觉质量下降有效地受到限制（110）。 通过使用剩余的未破坏的宏块（112,200）来估计丢失的宏块信息来实现视频序列内受到短错误突发和/或随机错误影响的区域的隐藏。 对于每个这样的丢失的宏块，使用来自所选未破坏的相邻宏块（208）的候选运动矢量生成强度信息的预测，并且产生候选运动矢量，其产生预测宏块之间的边界处的亮度值之间的最小均方差 为隐藏（210）选择相邻宏块。

公开(公告)号：WO1997015897A1

公开(公告)日：1997-05-01

申请号：PCT/US1996014115

申请日：1996-08-27

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  BANHAM, Mark, R. ,  BRAILEAN, James, C. ,  LEVINE, Stephen, N. ,  O'CONNELL, Kevin, J. ,  KATSAGGELOS, Aggelos, K.

IPC: G06K09/36

CPC classification number: H04N11/042 ,  H04N19/503

Abstract: The present invention provides a method (100, 700), device (400, 800) and microprocessor (500) for performing a computationally efficient iterative expansion of a displaced frame difference, DFD, image over a predetermined dictionary of modulated Gaussian functions for the purposes of video compression. The iterative expansion described in this invention decomposes the DFD image into a set of coefficients which represent the perceptually important areas of a video frame in a compact way. The resulting method, device and microprocessor serve to provide a means for very low bit rate coding/decoding of a video sequence.

Abstract translation: 本发明提供了一种方法（100,700），装置（400,800）和微处理器（500），用于为了目的而在调制高斯函数的预定字典上执行移位帧差DFD图像的计算上有效的迭代扩展 的视频压缩。 在本发明中描述的迭代展开将DFD图像分解成一组系数，这些系数以紧凑的方式表示视频帧的感知重要区域。 所得到的方法，设备和微处理器用于提供用于视频序列的非常低比特率编码/解码的手段。