公开(公告)号：WO2003039159A2

公开(公告)日：2003-05-08

申请号：PCT/IB2002/004349

申请日：2002-10-18

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.

Inventor： PENG, Shaomin ,  VAN DER SCHAAR, Mihaela

IPC: H04N7/26

CPC classification number: H04N19/34

Abstract: A system (10) and method for generating a frequency weighted (FW) matrix (22) for use in a Fine-Granularity-Scalability (FGS) video coding system. The system comprises: a system (16) for plotting the average discrete cosine transform (DCT) residuals versus the zigzag DCT scan line locations for a sample video frame encoded both at a predetermined base layer bit-rate and at approximately three times the predetermined base layer bit-rate; a system (18) for generating the difference plot of DCT residuals versus the zigzag DCT scan line locations for the video frame encoded at both the predetermined base layer bit-rate and at approximately three times the predetermined base layer bit-rate; and a system (20) for matching and normalizing a staircase curve to the average difference plot, wherein the staircase curve values can be further mapped into the weights for the FW matrix.

Abstract translation: 一种用于生成用于精细粒度可伸缩性（FGS）视频编码系统的频率加权（FW）矩阵（22）的系统（10）和方法。 该系统包括：系统（16），用于绘制平均离散余弦变换（DCT）残差相对于以预定基本层比特率编码的样本视频帧的锯齿形DCT扫描线位置，并且大约是预定基数的三倍 层比特率; 一个系统（18），用于产生DCT残差与针对预定基本层比特率和大约三倍于预定基本层比特率编码的视频帧的之字形DCT扫描线位置的差分图; 以及用于将阶梯曲线匹配和归一化为平均差分图的系统（20），其中所述阶梯曲线值可以进一步映射到所述FW矩阵的权重。

公开(公告)号：WO2002093933A1

公开(公告)日：2002-11-21

申请号：PCT/IB2002/001694

申请日：2002-05-15

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.

Inventor： PENG, Shaomin ,  VAN DER SCHAAR, Mihaela

IPC: H04N7/26

CPC classification number: H04N19/34 ,  H04N19/29 ,  H04N19/33

Abstract: The present invention provides methods and systems to determine the frequency weighting matrices that will provide the best image quality during MPEG4 FGS enhancement layer encoding, and to change this determination on a scene characteristics change basis, thereby optimizing the resulting output picture quality, especially in bandwidth-deprived applications.

Abstract translation: 本发明提供了在MPEG4FGS增强层编码期间确定将提供最佳图像质量的频率加权矩阵的方法和系统，并且基于场景特性变化来改变该确定，从而优化所得到的输出图像质量，特别是在带宽 有趣的应用程序。

公开(公告)号：WO2003034745A3

公开(公告)日：2003-04-24

申请号：PCT/IB2002/004226

申请日：2002-10-14

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.

Inventor： CHEN, Yingwei ,  PENG, Shaomin ,  LAN, Tse-Hua ,  ZHONG, Zhun

IPC: H04N7/46

Abstract: A system and method that reduces computational complexity of a decoder by identifying a skippable region in anoverlaid area. The invention provides a system for processing encoded video data, comprising: an analysis system that determines if a current video frame having an overlaid area acts as a reference for future video frames; and a system for identifying a skippable region in the overlaid area. The invention may also include a system for identifying a portion of the overlaid area as the skippable based on analysis of motion vectors or motion vector ranges.

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：WO2003039159A3

公开(公告)日：2003-05-08

申请号：PCT/IB2002/004349

申请日：2002-10-18

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.

Inventor： PENG, Shaomin ,  VAN DER SCHAAR, Mihaela

IPC: H04N7/26

Abstract: A system (10) and method for generating a frequency weighted (FW) matrix (22) for use in a Fine-Granularity-Scalability (FGS) video coding system. The system comprises: a system (16) for plotting the average discrete cosine transform (DCT) residuals versus the zigzag DCT scan line locations for a sample video frame encoded both at a predetermined base layer bit-rate and at approximately three times the predetermined base layer bit-rate; a system (18) for generating the difference plot of DCT residuals versus the zigzag DCT scan line locations for the video frame encoded at both the predetermined base layer bit-rate and at approximately three times the predetermined base layer bit-rate; and a system (20) for matching and normalizing a staircase curve to the average difference plot, wherein the staircase curve values can be further mapped into the weights for the FW matrix.

公开(公告)号：WO2003034745A2

公开(公告)日：2003-04-24

申请号：PCT/IB2002/004226

申请日：2002-10-14

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.

Inventor： CHEN, Yingwei ,  PENG, Shaomin ,  LAN, Tse-Hua ,  ZHONG, Zhun

IPC: H04N7/46

CPC classification number: H04N19/577 ,  H04N19/132 ,  H04N19/139 ,  H04N19/157 ,  H04N19/159 ,  H04N19/17 ,  H04N19/172 ,  H04N19/23 ,  H04N19/46 ,  H04N19/587

Abstract: A system and method that reduces computational complexity of a decoder by identifying a skippable region in anoverlaid area. The invention provides a system for processing encoded video data, comprising: an analysis system that determines if a current video frame having an overlaid area acts as a reference for future video frames; and a system for identifying a skippable region in the overlaid area. The invention may also include a system for identifying a portion of the overlaid area as the skippable based on analysis of motion vectors or motion vector ranges.

Abstract translation: 通过识别重叠区域中的可跳过区域来降低解码器的计算复杂度的系统和方法。 本发明提供了一种用于处理编码视频数据的系统，包括：分析系统，其确定具有覆盖区域的当前视频帧是否充当未来视频帧的参考; 以及用于识别重叠区域中的可跳过区域的系统。 本发明还可以包括用于基于运动矢量或运动矢量范围的分析来识别重叠区域的一部分为可跳过的系统。

公开(公告)号：WO2003005729A1

公开(公告)日：2003-01-16

申请号：PCT/IB2002/002583

申请日：2002-06-28

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.

Inventor： PENG, Shaomin ,  VAN ZON, Cornelis, C., A., M. ,  ZHONG, Zhun

IPC: H04N7/26

CPC classification number: H04N21/454 ,  H04N19/127 ,  H04N19/156 ,  H04N19/42 ,  H04N19/423 ,  H04N19/61 ,  H04N19/90 ,  H04N21/25808 ,  H04N21/2662 ,  H04N21/4402 ,  H04N21/4424 ,  H04N21/4516

Abstract: A complexity scalable decoder system and method. The system comprises: a decoder having a plurality of functional blocks for decoding compressed video data, the decoder further includes a plurality of scalable functions for selectively reducing a complexity of at least one of the functional blocks; and a local resource controller for generating a scaling strategy for the decoder, wherein the scaling strategy is selected in response to a complexity requirement received from a system resource manager, and wherein the scaling strategy is selected from a plurality of predetermined scaling strategies available to the local resource controller. Each of the predetermined scaling strategies may be selected from a look-up table designed off-line.

Abstract translation: 一种复杂度可扩展的解码系统和方法。 该系统包括：具有用于解码压缩视频数据的多个功能块的解码器，解码器还包括多个可缩放功能，用于选择性地降低至少一个功能块的复杂度; 以及本地资源控制器，用于为解码器生成缩放策略，其中响应于从系统资源管理器接收的复杂度要求来选择缩放策略，并且其中缩放策略是从多个可用于 本地资源控制器。 可以从离线设计的查找表中选择每个预定的缩放策略。

公开(公告)号：WO2003001816A1

公开(公告)日：2003-01-03

申请号：PCT/IB2001/002547

申请日：2001-12-12

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.

Inventor： PENG, Shaomin

IPC: H04N7/50

CPC classification number: H04N19/59 ,  H04N19/126 ,  H04N19/132 ,  H04N19/156 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61 ,  H04N19/90

Abstract: A video decoder system having a scalable IDCT system. Included is a system for determining a complexity level based on a complexity budget inputted from a local resource controller; and an IDCT system that selects a scaling algorithm from a plurality of scaling algorithms, wherein the selected scaling algorithm corresponds to the determined complexity level. Each of the plurality of scaling algorithms provides a unique data-pruning pattern for processing DCT data.

Abstract translation: 一种具有可扩展IDCT系统的视频解码器系统。 包括用于基于从本地资源控制器输入的复杂度预算来确定复杂度级别的系统; 以及IDCT系统，其从多个缩放算法中选择缩放算法，其中所选择的缩放算法对应于所确定的复杂度级别。 多个缩放算法中的每一个提供用于处理DCT数据的唯一的数据修剪模式。