公开(公告)号：WO2003026316A1

公开(公告)日：2003-03-27

申请号：PCT/IB2002/003627

申请日：2002-09-04

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.

Inventor： KALLURI, Rama

IPC: H04N7/46

CPC classification number: H04N21/6377 ,  H04N19/107 ,  H04N19/164 ,  H04N19/172 ,  H04N19/40 ,  H04N19/577 ,  H04N19/61 ,  H04N19/89 ,  H04N21/2343 ,  H04N21/43637 ,  H04N21/44008 ,  H04N21/44209 ,  H04N21/6131 ,  H04N21/6582

Abstract: A recovery system and method for a video communication system. The video communication system comprises: a transmitter for transmitting encoded video data to a device; a receiver for receiving a return signal from the device; a signal analysis system for analyzing the return signal to determine if a degraded signal condition exists between the transmitter and the device; and a recovery system that converts a predictive video frame in the encoded video data into an intra-coded video frame if the degraded signal condition exists.

Abstract translation: 一种用于视频通信系统的恢复系统和方法。 视频通信系统包括：发射机，用于将编码的视频数据发射到设备; 用于从所述设备接收返回信号的接收器; 信号分析系统，用于分析所述返回信号以确定所述发射机和所述设备之间是否存在劣化的信号条件; 以及恢复系统，如果存在劣化信号条件，则将编码视频数据中的预测视频帧转换为帧内编码视频帧。

公开(公告)号：WO2003017674A1

公开(公告)日：2003-02-27

申请号：PCT/JP2002/008035

申请日：2002-08-06

Applicant: ソニー株式会社 ,  森貞 英彦 ,  山田 誠

Inventor： 森貞 英彦 ,  山田 誠

IPC: H04N7/26

CPC classification number: H04N19/198 ,  H04N19/115 ,  H04N19/126 ,  H04N19/139 ,  H04N19/14 ,  H04N19/149 ,  H04N19/152 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/196 ,  H04N19/577 ,  H04N19/61

Abstract: An image encoding apparatus capable of improving quality of an image. A quantization index calculator (42) calculates a weighted mean of motion vector residuals according to motion vector residuals of macro blocks output from a motion vector residual buffer unit (72) and a total of them. The quantization index calculator (42) calculates a weighted mean of activities according to activity values of macro blocks output from an activity buffer unit (73) and a total of them. The quantization index calculator (42) calculates a quantization index according to the weighted mean of the vector residuals or the weighted mean of the activities. The present invention can be applied to an image encoding apparatus of the MPEG method.

Abstract translation: 一种能够提高图像质量的图像编码装置。 量化索引计算器（42）根据从运动矢量残差缓冲器单元（72）输出的宏块的运动矢量残差和它们的总和，计算运动矢量残差的加权平均值。 量化索引计算器（42）根据从活动缓冲器单元（73）输出的宏块的活动值和它们的总和来计算活动的加权平均值。 量化指标计算器（42）根据矢量残差的加权平均值或活动的加权平均值来计算量化指标。 本发明可以应用于MPEG方法的图像编码装置。

公开(公告)号：WO2003015293A2

公开(公告)日：2003-02-20

申请号：PCT/US2002/025356

申请日：2002-08-07

Applicant: JPS INTERNATIONAL, INC.

Inventor： CALLACI, John, W.

IPC: H04B

CPC classification number: H04N19/503 ,  H04N7/12 ,  H04N19/537 ,  H04N19/577 ,  H04N19/58

Abstract: A method and apparatus for creating intermediate image frames based on two or more successive captured image frames for transmission over a limited bandwidth medium, such as a telephone line. The intermediate image frames are constructed based on pixel information of portions that did change between two consecutive frames. The intermediate frames are constructed without the necessity of creating portions of the successive image frames that did not move or change. The created intermediate frames may be combined with originally captured frames to convey live video information to a user.

Abstract translation: 一种用于基于两个或更多个连续捕获的图像帧创建中间图像帧的方法和装置，用于在诸如电话线的有限带宽介质上传输。 基于在两个连续帧之间变化的部分的像素信息来构建中间图像帧。 中间帧被构造而不需要创建不移动或改变的连续图像帧的部分。 创建的中间帧可以与原始捕获的帧组合以将实况视频信息传送给用户。

公开(公告)号：WO0137564A9

公开(公告)日：2002-11-28

申请号：PCT/US0026268

申请日：2000-10-20

Applicant: MOONLIGHT CORDLESS LTD ,  DVIR IRA ,  MEDAN YOAV ,  FRIEDMAN MARK M

Inventor： DVIR IRA ,  MEDAN YOAV

IPC: G06F3/02 ,  G06F3/153 ,  G06T9/00 ,  H03M7/30 ,  H04N7/24 ,  H04N7/26 ,  H04N7/46 ,  H04N7/50 ,  H04N7/52 ,  H04Q9/00 ,  H04N7/14

CPC classification number: H04N21/4363 ,  H04N19/12 ,  H04N19/136 ,  H04N19/149 ,  H04N19/162 ,  H04N19/172 ,  H04N19/196 ,  H04N19/42 ,  H04N19/44 ,  H04N19/57 ,  H04N19/577 ,  H04N19/61 ,  H04N21/4126 ,  H04N21/4143 ,  H04N21/4398 ,  H04N21/44008 ,  H04N21/4402 ,  H04N21/485 ,  H04N21/816 ,  Y10S707/99942

Abstract: A system and method for rapid multimedia data compression and transmission for a wireless remote monitor. The method of multimedia data compression according to the present invention adjusts the compression method according to the type of software application which generated the multimedia data, and hence according to the characteristic of the data itself. Preferably, the type and profile of multimedia data compression is selected by a profile manager (7), which detects the characteristics of the multimedia data to determine the character of the data, and then which selects the multimedia data compression method and profile (11) according to the multimedia character. The compression method and system may be used with a device for remotely displaying information from a monitor of a main computer and for remotely and fully controlling the main computer.

Abstract translation: 一种用于无线远程监控器的快速多媒体数据压缩和传输的系统和方法。 根据本发明的多媒体数据压缩的方法根据产生多媒体数据的软件应用的类型调整压缩方法，并因此根据数据本身的特性来调整。 优选地，多媒体数据压缩的类型和简档由简档管理器（7）选择，简档管理器（7）检测多媒体数据的特性以确定数据的字符，然后选择多媒体数据压缩方法和简档（11） 根据多媒体字符。 压缩方法和系统可以与用于从主计算机的监视器远程显示信息并用于远程和完全控制主计算机的设备一起使用。

公开(公告)号：WO2002080571A2

公开(公告)日：2002-10-10

申请号：PCT/IB2002/000801

申请日：2002-03-15

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.

Inventor： PENG, Shaomin ,  VAN DER SCHAAR, Maurits

IPC: H04N7/50

CPC classification number: H04N19/577 ,  H04N19/137 ,  H04N19/156 ,  H04N19/503 ,  H04N19/61 ,  H04N19/90

Abstract: A decoder system having a motion compensation system that scales the processing of B pictures in order to save computational resources. The motion compensation system has a first scaling system that comprises: a system for comparing a motion vector magnitude of each macroblock in a B picture with a predetermined threshold; a system for performing a routine decoding operation for each macroblock in which the motion vector magnitude is greater than the predetermined threshold; and a system for copying a corresponding macroblock from a previous picture for each macroblock in which the motion vector magnitude is less than or equal to the predetermined threshold. The motion compensation system has a second scaling system that comprises: a system for calculating an average motion vector magnitude for a first B picture; and a system for replacing a next contiguous B picture with the first B picture if the average motion vector magnitude is less than or equal to a predetermined threshold. The second scaling system may also comprise: a system for calculating an average motion vector magnitude for a reference picture; and a system for replacing a B picture with the reference picture if the average motion vector magnitude is less than or equal to a predetermined threshold.

Abstract translation: 一种具有运动补偿系统的解码器系统，其对B图像的处理进行缩放以节省计算资源。 运动补偿系统具有第一缩放系统，其包括：用于将B图像中的每个宏块的运动矢量幅度与预定阈值进行比较的系统; 用于对运动矢量幅度大于预定阈值的每个宏块执行例程解码操作的系统; 以及用于从运动矢量幅度小于或等于预定阈值的每个宏块复制来自前一图像的对应宏块的系统。 运动补偿系统具有第二缩放系统，其包括：用于计算第一B图像的平均运动矢量幅度的系统; 以及如果平均运动矢量幅度小于或等于预定阈值，则用第一B图像替换下一连续B图像的系统。 第二缩放系统还可以包括：用于计算参考图片的平均运动矢量幅度的系统; 以及如果平均运动矢量幅度小于或等于预定阈值，则用参考图像替换B图像的系统。

公开(公告)号：WO0239750A3

公开(公告)日：2002-09-19

申请号：PCT/EP0112902

申请日：2001-11-02

Applicant: KONINKL PHILIPS ELECTRONICS NV

Inventor： PENG SHAOMIN ,  ZHONG ZHUN

IPC: G06T9/00 ,  H04N7/26 ,  H04N7/46 ,  H04N7/50

CPC classification number: H04N19/577 ,  H04N19/156 ,  H04N19/42 ,  H04N19/61 ,  H04N19/90

Abstract: A system and method for scaling an MPEG-2 video decoder subject to a resource constraint. A decoder system is provided for decoding compressed video data arranged in a group of pictures, wherein the group of pictures include I pictures, P pictures and B pictures. The system comprises a processing path for decoding an error residual associated with the group of pictures, and a filtering system for preventing the error residual associated with B pictures from being decoded by the processing path. The decoder system may further comprise a system for selectively enabling the filtering system for B pictures having a DC coefficient that is below a predetermined threshold.

Abstract translation: 用于缩放受资源约束的MPEG-2视频解码器的系统和方法。 解码器系统被提供用于解码排列在一组图像中的压缩视频数据，其中图像组包括I图像，P图像和B图像。 该系统包括用于解码与该组图像相关联的错误残差的处理路径，以及用于防止与B图像相关联的错误残差被处理路径解码的滤波系统。 解码器系统还可以包括用于选择性地使能具有低于预定阈值的DC系数的B图像的滤波系统的系统。

公开(公告)号：WO0249365A2

公开(公告)日：2002-06-20

申请号：PCT/IB0102513

申请日：2001-12-11

Applicant: KONINKL PHILIPS ELECTRONICS NV

Inventor： DANTWALA NEHAL R

IPC: H04N7/01 ,  H04N7/26 ,  H04N7/46

CPC classification number: H04N19/577 ,  H04N19/105 ,  H04N19/112 ,  H04N19/137 ,  H04N19/51 ,  H04N19/587

Abstract: For use in a video image upconversion unit of the type that uses motion compensation to generate an interpolated field using motion vectors, an improved method of motion compensation is disclosed. The method performs motion compensation on a pixel and determines whether a motion vector assigned to the pixel is correct or incorrect. If the motion vector is incorrect, the method sets the value of the pixel to a previously recorded pixel value. The previously recorded pixel value is obtained by calculating for the pixel the difference between the value of a corresponding motion compensated pixel from a previous frame and the value of a corresponding motion compensated pixel from a next field. The difference is then compared with a threshold value. If the difference is less than the threshold value, then the value of the pixel is set equal to the average of the value of the corresponding motion compensated pixel from the previous frame and the value of the corresponding motion compensated pixel from the next field.

Abstract translation: 为了在使用运动补偿的类型的视频图像上变频单元中使用以使用运动矢量产生内插场，公开了一种改进的运动补偿方法。 该方法对像素执行运动补偿并确定分配给该像素的运动矢量是正确还是不正确。 如果运动矢量不正确，则该方法将该像素的值设置为先前记录的像素值。 先前记录的像素值是通过对该像素计算来自前一帧的相应运动补偿像素的值与来自下一场的对应运动补偿像素的值之间的差来获得的。 然后将差值与阈值进行比较。 如果差值小于阈值，则将像素的值设置为等于来自前一帧的相应运动补偿像素的值的平均值和来自下一场的相应运动补偿像素的值。

公开(公告)号：WO02039750A2

公开(公告)日：2002-05-16

申请号：PCT/EP2001/012902

申请日：2001-11-02

IPC: G06T9/00 ,  H04N7/26 ,  H04N7/46 ,  H04N7/50

CPC classification number: H04N19/577 ,  H04N19/156 ,  H04N19/42 ,  H04N19/61 ,  H04N19/90

Abstract: A system and method for scaling an MPEG-2 video decoder subject to a resource constraint. A decoder system is provided for decoding compressed video data arranged in a group of pictures, wherein the group of pictures include I pictures, P pictures and B pictures. The system comprises a processing path for decoding an error residual associated with the group of pictures, and a filtering system for preventing the error residual associated with B pictures from being decoded by the processing path. The decoder system may further comprise a system for selectively enabling the filtering system for B pictures having a DC coefficient that is below a predetermined threshold.

Abstract translation: 一种用于制作受资源约束可扩展的MPEG-2视频解码器的系统和方法。 提供了一种解码器系统，用于对排列在一组图像中的压缩视频数据进行解码，该组包括I图像，P图像和B图像。该系统包括用于解码与图像相关联的差错残差的处理信道。 图像组以及用于防止通过处理通道解码与图像B相关联的错误余量的过滤系统。解码器系统还可以包括允许图像过滤系统 B具有低于预定阈值的DC系数。

公开(公告)号：WO0189223A3

公开(公告)日：2002-04-04

申请号：PCT/EP0105453

申请日：2001-05-14

Applicant: NOKIA MOBILE PHONES LTD

Inventor： HANNUKSELA MISKA ,  CAGLAR KEREM

IPC: H04N19/89 ,  G06T9/00 ,  H04N19/105 ,  H04N19/51 ,  H04N19/895 ,  H04N7/64 ,  H04N7/46 ,  H04N7/68

CPC classification number: H04N19/577 ,  H04N19/65 ,  H04N19/895

Abstract: A method of encoding a video signal representing a sequence of pictures, the method comprising receiving a current picture for encoding, forming a temporal prediction of the current picture from a default reference picture for the current picture, comparing the default reference picture with at least one further reference picture, calculating a measure of the similarity between the default reference picture and each further reference picture and, if the measure of similarity meets a pre-determined criterion, outputting an indicator identifying the further reference picture.

Abstract translation: 一种编码表示图像序列的视频信号的方法，所述方法包括接收当前图像进行编码，从当前图像的默认参考图像形成当前图像的时间预测，将默认参考图像与至少一个 计算默认参考图像和每个另外的参考图像之间的相似度的度量，并且如果相似性度量符合预定标准，则输出识别另外的参考图片的指示符。

公开(公告)号：WO01089223A2

公开(公告)日：2001-11-22

申请号：PCT/EP2001/005453

申请日：2001-05-14

IPC: H04N19/89 ,  G06T9/00 ,  H04N19/105 ,  H04N19/51 ,  H04N19/895 ,  H04N7/24

CPC classification number: H04N19/577 ,  H04N19/65 ,  H04N19/895

Abstract: A method of encoding a video signal representing a sequence of pictures, the method comprising receiving a current picture for encoding, forming a temporal prediction of the current picture from a default reference picture for the current picture, comparing the default reference picture with at least one further reference picture, calculating a measure of the similarity between the default reference picture and each further reference picture and, if the measure of similarity meets a pre-determined criterion, outputting an indicator identifying the further reference picture.

Abstract translation: 一种编码表示图像序列的视频信号的方法，所述方法包括接收当前图像进行编码，从当前图像的默认参考图像形成当前图像的时间预测，将默认参考图像与至少一个 计算默认参考图像和每个另外的参考图像之间的相似度的度量，并且如果相似性度量符合预定标准，则输出识别另外的参考图片的指示符。