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公开(公告)号：WO1997004599A1
公开(公告)日：1997-02-06
申请号：PCT/US1996007566
申请日：1996-05-24
Applicant: MOTOROLA INC.
Inventor： MOTOROLA INC. , OZCELIK, Taner , BRAILEAN, James, C. , KATSAGGELOS, Aggelos, K.
IPC: H04N07/36
CPC classification number: G06T7/20 , H04N5/145 , H04N19/503 , H04N19/553
Abstract: The present invention provides a method and apparatus for detecting occluded areas in a video frame. A previous displacement vector field, DVF, is motion compensated (402) and used to provide an occlusion test parameter (404) which is compared to an optimal threshold (408) to detect occluded areas. The optimal threshold is calculated based on the previous DVF and a predetermined threshold (406).
Abstract translation: 本发明提供一种用于检测视频帧中的遮挡区域的方法和装置。 先前的位移矢量场DVF是运动补偿（402）并且用于提供与最佳阈值（408）进行比较以检测遮挡区域的遮挡测试参数（404）。 基于先前的DVF和预定阈值来计算最佳阈值（406）。
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公开(公告)号：EP0784904A1
公开(公告)日：1997-07-23
申请号：EP96914768.0
申请日：1996-05-24
Applicant: MOTOROLA, INC.
CPC classification number: G06T7/20 , H04N5/145 , H04N19/503 , H04N19/553
Abstract: The present invention provides a method and apparatus for detecting occluded areas in a video frame. A previous displacement vector field, DVF, is motion compensated (402) and used to provide an occlusion test parameter (404) which is compared to an optimal threshold (408) to detect occluded areas. The optimal threshold is calculated based on the previous DVF and a predetermined threshold (406).
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公开(公告)号：EP0783821A1
公开(公告)日：1997-07-16
申请号：EP96921552.0
申请日：1996-06-12
Applicant: MOTOROLA, INC.
Inventor： BRAILEAN, James, C. , OZCELICK, Taner , KATSAGGELOS, Aggelos, K.
CPC classification number: H04N19/543 , G06T7/20
Abstract: The present invention provides a method and system for estimating the motion within a video sequence. The invention provides very accurate estimates of both the displacement vector field, as well as, the boundaries of moving objects. The system comprises a preprocessor (102), a spatially adaptive pixel motion estimator (104), a motion boundary estimator (106), and a motion analyzer (108). The preprocessor (102) provides a first estimate of the displacement vector field, and the spatially adaptive pixel motion estimator (104) provides a first estimate of object boundaries. The motion boundary estimator (106) and the motion analyzer (108) improve the accuracy of the first estimates.
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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。
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公开(公告)号：WO1997004402A1
公开(公告)日：1997-02-06
申请号：PCT/US1996007604
申请日：1996-05-24
Applicant: MOTOROLA INC.
Inventor： MOTOROLA INC. , OZCELIK, Taner , BRAILEAN, James, C. , KATSAGGELOS, Aggelos, K.
IPC: G06F17/00
CPC classification number: H04N19/543
Abstract: The present invention provides a method (300) and apparatus (100) for regenerating a dense motion vector field, which describes the motion between two temporally adjacent frames of a video sequence, utilizing a previous dense motion vector field. In this method, a spatial DVF and a temporal DVF are determined (302 and 304) and summed to provide a DVF prediction (306). This method and apparatus enables a dense motion vector field to be used in the encoding and decoding process of a video sequence. This is very important since a dense motion vector field provides a much higher quality prediction of the current frame as compared to the standard block matching motion estimation techniques. The problem to date with utilizing a dense motion vector field is that the information contained in a dense motion field is too large to transmit. The present invention eliminates the need to transmit any motion information.
Abstract translation: 本发明提供一种用于再现密集运动矢量场的方法（300）和装置（100），其利用先前的密集运动矢量场来描述视频序列的两个时间上相邻的帧之间的运动。 在该方法中，确定空间DVF和时间DVF（302和304）并相加以提供DVF预测（306）。 该方法和装置使得能够在视频序列的编码和解码处理中使用密集运动矢量场。 这是非常重要的，因为与标准块匹配运动估计技术相比，密集运动矢量场提供了当前帧的更高质量的预测。 迄今使用密集运动矢量场的问题是包含在密集运动场中的信息太大而不能传输。 本发明消除了传送任何运动信息的需要。
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Patent Agency Ranking
公开(公告)号：WO2010042650A3
公开(公告)日：2010-04-15
申请号：PCT/US2009/059889
申请日：2009-10-07
Applicant: MOTOROLA, INC. , NORTHWESTERN UNIVERSITY , ISHTIAQ, Faisal , HSIANG, Shih-Ta , KATSAGGELOS, Aggelos, K. , MAANI, Ehsan , USLUBAS, Serhan
Inventor： ISHTIAQ, Faisal , HSIANG, Shih-Ta , KATSAGGELOS, Aggelos, K. , MAANI, Ehsan , USLUBAS, Serhan
IPC: H04N7/24
Abstract: A device for use with a frame generating portion that is arranged to receive picture data corresponding to a plurality of pictures and to generate encoded video data for transmission across a transmission channel having an available bandwidth. The frame generating portion can generate a frame for each of the plurality of pictures to create a plurality of frames. The encoded video data is based on the received picture data. The device includes a distortion estimating portion and inclusion determining portion and an extracting portion. The distortion estimating portion can estimate a distortion. The inclusion determining portion can establish an inclusion boundary based on the estimated distortion. The extracting portion can extract a frame from the plurality of frames based on the inclusion boundary.
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公开(公告)号：WO1997004600A1
公开(公告)日：1997-02-06
申请号：PCT/US1996010141
申请日：1996-06-12
Applicant: MOTOROLA INC.
Inventor： MOTOROLA INC. , BRAILEAN, James, C. , OZCELICK, Taner , KATSAGGELOS, Aggelos, K.
IPC: H04N07/36
CPC classification number: H04N19/543 , G06T7/20
Abstract: The present invention provides a method and system for estimating the motion within a video sequence. The invention provides very accurate estimates of both the displacement vector field, as well as, the boundaries of moving objects. The system comprises a preprocessor (102), a spatially adaptive pixel motion estimator (104), a motion boundary estimator (106), and a motion analyzer (108). The preprocessor (102) provides a first estimate of the displacement vector field, and the spatially adaptive pixel motion estimator (104) provides a first estimate of object boundaries. The motion boundary estimator (106) and the motion analyzer (108) improve the accuracy of the first estimates.
Abstract translation: 本发明提供了一种用于估计视频序列内的运动的方法和系统。 本发明提供了移动物体的位移矢量场以及边界的非常准确的估计。 该系统包括预处理器（102），空间自适应像素运动估计器（104），运动边界估计器（106）和运动分析器（108）。 预处理器（102）提供位移矢量场的第一估计，并且空间自适应像素运动估计器（104）提供物体边界的第一估计。 运动边界估计器（106）和运动分析器（108）提高了第一估计的准确性。
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8.发明申请
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。
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公开(公告)号：WO1997004589A1
公开(公告)日：1997-02-06
申请号：PCT/US1996010139
申请日：1996-06-12
Applicant: MOTOROLA, INC.
Inventor： MOTOROLA, INC. , OZCELIK, Taner , BRAILEAN, James, C. , KATSAGGELOS, Aggelos, K. , ERDOGAN, Ozan , AUYEUNG, Cheung
IPC: H04N05/21
Abstract: The present invention provides a method (200) and an apparatus (100) for spatially adaptive filtering for video encoding. The apparatus filters a video sequence prior the encoding process. The apparatus comprises a noise variance determiner (102), a local variance determiner (104), a noise visibility function determiner (106), a Gaussian kernel determiner (108), and a convolver (110). The apparatus removes noise directly from a Displaced Frame Difference, DFD, signal. This novel approach removes noise and miscellaneous high frequency components from the DFD signal without the introduction of the filtering artifacts characteristic of current techniques. By reducing the miscellaneous high frequency components, the present invention is capable of reducing the amount of information that must be encoded by the video encoder without substantially degrading the decoded video sequence.
Abstract translation: 本发明提供一种用于视频编码的空间自适应滤波的方法（200）和装置（100）。 该装置在编码处理之前对视频序列进行滤波。 该装置包括噪声方差确定器（102），局部方差确定器（104），噪声可见性功能确定器（106），高斯核确定器（108）和卷积器（110）。 该装置直接从位移帧差异DFD信号中去除噪声。 这种新颖的方法从DFD信号中消除噪声和其他高频分量，而不引入当前技术特征的滤波伪影。 通过减少各种高频分量，本发明能够减少必须由视频编码器编码的信息量，而不会使解码的视频序列基本上降级。
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公开(公告)号：WO1997004403A1
公开(公告)日：1997-02-06
申请号：PCT/US1996010129
申请日：1996-06-12
Applicant: MOTOROLA INC.
Inventor： MOTOROLA INC. , OZCELIK, Taner , BRAILEAN, James, C. , KATSAGGELOS, Aggelos, K.
IPC: G06F17/00
CPC classification number: H04N19/537 , H04N19/20 , H04N19/503
Abstract: The present invention provides a method (600) and system (100) for predicting a differential vector field. The method and system enable the detection and encoding of an area where motion compensating the past image frame to the current image frame, fails. Based on the DFD signal, the present invention detects regions where the motion compensation has failed (102). The boundaries of these regions are encoded and sent to the decoder (104). The intensity values contained in this region, by the current intensity frame, are also encoded and sent to the decoder. Based on the decoded region boundaries, the decoder decodes the intensity values and places them into the correct regions.
Abstract translation: 本发明提供一种用于预测微分矢量场的方法（600）和系统（100）。 该方法和系统使得对过去的图像帧进行运动补偿到当前图像帧的区域的检测和编码失败。 基于DFD信号，本发明检测运动补偿失败的区域（102）。 这些区域的边界被编码并发送到解码器（104）。 包含在该区域中的当前强度帧的强度值也被编码并发送到解码器。 基于解码的区域边界，解码器解码强度值并将它们放入正确的区域。
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