公开(公告)号：WO1997015888A1

公开(公告)日：1997-05-01

申请号：PCT/US1996014144

申请日：1996-08-27

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  LEVINE, Stephen, N. ,  BRAILEAN, James, C. ,  BANHAM, Mark, R.

IPC: G06F17/00

CPC classification number: H04N19/00 ,  H04N19/61 ,  H04N19/70 ,  H04N19/89

Abstract: The present invention provides a method (200) and device (300) for error control of a video compressed sequence in which error protection for both random and burst channel errors is provided. The error control syntax (100) applies a fixed length packet synchronization system to variable length coded compressed video data, which provides the capability to limit error propagation within the decoded video bit stream. The fixed length packet control information provides information to decode compressed video data in both forward and reverse directions to allow for the recovery of correctly decoded video data within a decoded frame after long bursts of channel errors while reducing the overhead for error control. The error control method also provides video error detection which may be used for error concealment.

Abstract translation: 本发明提供了一种视频压缩序列的误差控制方法（200）和装置（300），其中提供了随机和突发信道错误的错误保护。 错误控制语法（100）将固定长度分组同步系统应用于可变长度编码压缩视频数据，其提供限制解码视频比特流内的错误传播的能力。 固定长度分组控制信息提供用于在前向和反向两个方向解码压缩视频数据的信息，以允许在长时间的信道错误突发之后在解码帧内恢复正确解码的视频数据，同时减少错误控制的开销。 错误控制方法还提供可用于错误隐藏的视频错误检测。

公开(公告)号：WO1997015887A1

公开(公告)日：1997-05-01

申请号：PCT/US1996014124

申请日：1996-08-27

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  BANHAM, Mark, R. ,  BRAILEAN, James, C. ,  LEVINE, Stephen, N. ,  KATSAGGELOS, Aggelos, K. ,  SCHUSTER, Guido, M.

IPC: G06F17/00

CPC classification number: G06T9/00

Abstract: A method (100, 200), device (300) and microprocessor (400) are provided for selectively compressing video frames of a motion compensated prediction-based viedo codec based on a predetermined set of compression techniques. An energy estimate of the currrent displaced frame difference, DFD, is used to compute a ratio between the estimate and a historical mean of energy estimates. The ratio is iteratively compared to a predetermined set of thresholds which are associated with the predetermined set of compression techniques. The comparisons are used to choose a technique based on teh thresholds, and a technique is selected to be used for encoding the current DFD.

Abstract translation: 提供方法（100,200），设备（300）和微处理器（400），用于基于预定的一组压缩技术选择性地压缩基于运动补偿的基于预测的viedo编解码器的视频帧。 使用流量偏移帧差的能量估计DFD来计算估计值与能量估计的历史平均值之间的比率。 该比率被迭代地与与预定的压缩技术集合相关联的预定阈值集进行比较。 比较用于选择基于阈值的技术，并且选择用于编码当前DFD的技术。

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：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。

公开(公告)号：EP0800677B1

公开(公告)日：2003-10-01

申请号：EP96929880.1

申请日：1996-08-27

Applicant: MOTOROLA, INC.

Inventor： BANHAM, Mark, R. ,  BRAILEAN, James, C. ,  LEVINE, Stephen, N. ,  KATSAGGELOS, Aggelos, K. ,  SCHUSTER, Guido, M.

IPC: G06T9/00

CPC classification number: G06T9/00

Abstract: A method (100, 200), device (300) and microprocessor (400) are provided for selectively compressing video frames of a motion compensated prediction-based viedo codec based on a predetermined set of compression techniques. An energy estimate of the currrent displaced frame difference, DFD, is used to compute a ratio between the estimate and a historical mean of energy estimates. The ratio is iteratively compared to a predetermined set of thresholds which are associated with the predetermined set of compression techniques. The comparisons are used to choose a technique based on teh thresholds, and a technique is selected to be used for encoding the current DFD.

公开(公告)号：EP0800677A1

公开(公告)日：1997-10-15

申请号：EP96929880.0

申请日：1996-08-27

Applicant: MOTOROLA, INC.

Inventor： BANHAM, Mark, R. ,  BRAILEAN, James, C. ,  LEVINE, Stephen, N. ,  KATSAGGELOS, Aggelos, K. ,  SCHUSTER, Guido, M.

IPC: G06T9

CPC classification number: G06T9/00

Abstract: A method (100, 200), device (300) and microprocessor (400) are provided for selectively compressing video frames of a motion compensated prediction-based viedo codec based on a predetermined set of compression techniques. An energy estimate of the currrent displaced frame difference, DFD, is used to compute a ratio between the estimate and a historical mean of energy estimates. The ratio is iteratively compared to a predetermined set of thresholds which are associated with the predetermined set of compression techniques. The comparisons are used to choose a technique based on teh thresholds, and a technique is selected to be used for encoding the current DFD.

公开(公告)号：EP0800678B1

公开(公告)日：2004-05-06

申请号：EP96930682.8

申请日：1996-08-27

Applicant: MOTOROLA, INC.

Inventor： LEVINE, Stephen, N. ,  BRAILEAN, James, C. ,  BANHAM, Mark, R.

IPC: H04N7/64

CPC classification number: H04N19/00 ,  H04N19/61 ,  H04N19/70 ,  H04N19/89

公开(公告)号：EP0800678A1

公开(公告)日：1997-10-15

申请号：EP96930682.0

申请日：1996-08-27

Applicant: MOTOROLA, INC.

Inventor： LEVINE, Stephen, N. ,  BRAILEAN, James, C. ,  BANHAM, Mark, R.

IPC: H04N7

CPC classification number: H04N19/00 ,  H04N19/61 ,  H04N19/70 ,  H04N19/89

Abstract: The present invention provides a method (200) and device (300) for error control of a video compressed sequence in which error protection for both random and burst channel errors is provided. The error control syntax (100) applies a fixed length packet synchronization system to variable length coded compressed video data, which provides the capability to limit error propagation within the decoded video bit stream. The fixed length packet control information provides information to decode compressed video data in both forward and reverse directions to allow for the recovery of correctly decoded video data within a decoded frame after long bursts of channel errors while reducing the overhead for error control. The error control method also provides video error detection which may be used for error concealment.