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1. 发明申请

WO1997034422A1 METHOD AND APPARATUS FOR BLOCKING EFFECT REDUCTION IN IMAGES 审中-公开
标题翻译：阻塞影像减少效果的方法与装置
公开(公告)号：WO1997034422A1
公开(公告)日：1997-09-18
申请号：PCT/US1997000737
申请日：1997-01-10
申请人： SONY CORPORATION , SONY ELECTRONICS, INC.
发明人： SONY CORPORATION , SONY ELECTRONICS, INC. , CHANG, Ching-Fang , LEE, Chuen-Chien
IPC分类号： H04N07/30
CPC分类号： H04N19/14 , H04N19/182 , H04N19/86
摘要： An apparatus and method for post processing image data which previously was encoded using a discrete cosine transform in order to remove resulting blocking effects. Possible blocking points are examined to determine whether blocking points exist. If blocking points are determined, an adjustment value for each blocking point is computed and proportionately utilized to adjust the adjacent and neighboring pixels.
摘要翻译：用于后处理图像数据的装置和方法，其先前使用离散余弦变换进行编码，以便去除所产生的阻塞效应。检查可能的阻塞点以确定是否存在阻塞点。如果确定了阻塞点，则计算每个阻塞点的调整值并成比例地用于调整相邻和相邻像素。

2. 发明申请

WO1996038006A1 VIDEO ENCODER EMPLOYING MOTION ESTIMATION WITH ADAPTIVE THRESHOLD TERMINATION 审中-公开
标题翻译：视频编码器采用自适应阈值终止运动估计
公开(公告)号：WO1996038006A1
公开(公告)日：1996-11-28
申请号：PCT/US1996004065
申请日：1996-03-26
申请人： MOTOROLA INC.
发明人： MOTOROLA INC. , ZHU, Qin, Fan
IPC分类号： H04N07/30
CPC分类号： H04N19/152 , H04N19/115 , H04N19/124 , H04N19/146 , H04N19/176 , H04N19/51 , H04N19/61 , H04N19/63
摘要： A complexity scalable device (100), method (300, 400) and digital video encoder (200) estimate a frame-to-frame motion vector of an image block of pixels to be encoded with adaptive threshold termination utilizing a novel dynamic threshold value determination. A dynamic threshold selector dynamically determines a threshold value in accordance with a predetermined scheme based on the quantization stepzise QP, and an adaptive motion vector determiner utilizes an original block, a reference frame, and the threshold value for adaptively estimating the frame-to-frame motion vector.
摘要翻译：复杂性可伸缩设备（100），方法（300,400）和数字视频编码器（200）使用新的动态阈值确定来估计要用自适应阈值终止编码的像素的图像块的帧到帧运动矢量。动态阈值选择器根据基于量化梯度QP的预定方案来动态地确定阈值，并且自适应运动矢量确定器利用原始块，参考帧和阈值来自适应地估计帧到帧运动矢量。

3. 发明申请

WO1996034496A2 DEVICE AND METHOD FOR CODING VIDEO PICTURES 审中-公开
标题翻译：用于编码视频图像的设备和方法
公开(公告)号：WO1996034496A2
公开(公告)日：1996-10-31
申请号：PCT/IB1996000349
申请日：1996-04-18
申请人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB
发明人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB , KEESMAN, Gerrit, Johan
IPC分类号： H04N07/30
CPC分类号： H04N19/19 , H04N19/126 , H04N19/146 , H04N19/147 , H04N19/149 , H04N19/152 , H04N19/176 , H04N19/60
摘要： The picture quality of an MPEG-encoded video signal is improved considerably by reducing the coefficients after quantization in such a way that the "Lagrangian cost" D+ lambda R (D is distortion, R is bitrate) is minimal for a given value of the "Lagrange multiplier" lambda . The distortion decreases because the step size is reduced while the bitrate remains equal.
摘要翻译： MPEG编码视频信号的图像质量通过减小量化后的系数而显着改善，使得“拉格朗日代价”D + lambda R（D为失真，R为比特率）对于给定的“ 拉格朗日乘数“lambda。由于在比特率保持相等的同时降低了步长，所以失真减小。

4. 发明申请

WO1996019080A1 DIGITAL VIDEO PROGRAMME ENCODING DEVICE 审中-公开
标题翻译：数字视频编程设备
公开(公告)号：WO1996019080A1
公开(公告)日：1996-06-20
申请号：PCT/FR1995001647
申请日：1995-12-12
申请人： MATRA COMMUNICATION , MASSON, Jean-Michel
发明人： MATRA COMMUNICATION
IPC分类号： H04N07/30
CPC分类号： H04N19/154 , H04N19/124 , H04N19/14 , H04N19/146 , H04N19/15 , H04N19/172 , H04N19/61
摘要： A device for encoding an input video stream representing a series of frames by identifying each frame using an information quantity that differs from one frame to the next. The device includes a programmable-throughput video encoder (16), as well as a memory (20) with a capacity of at least one frame positioned upstream from the programmable encoder in the video stream, a second fixed-throughput video encoder (22) receiving the input video stream, and means (26) for comparing the quality of each output image with a reference value and controlling the programmable encoder to maintain quality at a predetermined value.
摘要翻译：一种用于通过使用不同于一帧到下一帧的信息量来识别每个帧来对表示一系列帧的输入视频流进行编码的装置。该设备包括可编程吞吐量视频编码器（16）以及具有位于视频流中的可编程编码器上游的至少一个帧的容量的存储器（20），第二固定吞吐量视频编码器（22）接收输入视频流，以及用于将每个输出图像的质量与参考值进行比较的装置（26），并且控制可编程编码器将质量保持在预定值。

5. 发明申请

WO1998026600A1 DATA EFFICIENT QUANTIZATION TABLE FOR A DIGITAL VIDEO SIGNAL PROCESSOR 审中-公开
标题翻译：数字视频信号处理器的数据有效量化表
公开(公告)号：WO1998026600A1
公开(公告)日：1998-06-18
申请号：PCT/US1997021572
申请日：1997-11-25
申请人： THOMSON CONSUMER ELECTRONICS, INC.
发明人： THOMSON CONSUMER ELECTRONICS, INC. , YU, Haoping , CANFIELD, Barth, Alan , BEYERS, Billy, Wesley, Jr. , LAM, Wai-man
IPC分类号： H04N07/30
CPC分类号： H04N19/428 , H04N19/13 , H04N19/423 , H04N19/593 , H04N19/60 , H04N19/61 , H04N19/91
摘要： An MPEG coded and compressed video signal is received and decompressed for display. Prior to storing frames required for motion compensation in memory (14), pixel blocks are recompressed by quantizing (20) DPCM prediction error values (18) to reduce bandwidth and frame memory requirements. Fixed length quantization and dequantization tables (Fig. 2) have N levels (e.g., 15 levels), and each level has an associated output symbol of predominantly M bits (e.g., 4 bits), except that at least one of said N levels (e.g., level 7) is defined by a unique short symbol having less than M bits (e.g., 3 bits). One of the M bits may be reserved as a sign bit. Each time a short symbol is used to represent a data value, bandwidth and memory are reduced and/or preserved for other uses, for example, inserting overhead data into a fixed-size data stream. For large sequences of data, such as exists for video data for example, the reduction in memory and bandwidth is significant.
摘要翻译： MPEG编码和压缩视频信号被接收和解压缩以便显示。在将运动补偿所需的帧存储在存储器（14）之前，通过量化（20）DPCM预测误差值（18）来重新压缩像素块，以减少带宽和帧存储器要求。固定长度量化和反量化表（图2）具有N个级别（例如，15个级别），并且每个级别具有主要为M位（例如，4位）的相关联的输出符号，除了所述N级中的至少一个例如，级7）由具有小于M位（例如，3位）的唯一短符号定义。 M位中的一个可以被保留为符号位。每当使用短符号来表示数据值时，减少和/或保留用于其他用途的带宽和存储器，例如将开销数据插入到固定大小的数据流中。对于例如存在用于视频数据的大数据序列，存储器和带宽的减少是显着的。

6. 发明申请

WO1997038533A1 SYSTEM AND METHOD FOR A MULTIRESOLUTION TRANSFORM OF DIGITAL IMAGE INFORMATION 审中-公开
标题翻译：用于数字图像信息的多分辨率变换的系统和方法
公开(公告)号：WO1997038533A1
公开(公告)日：1997-10-16
申请号：PCT/US1997005587
申请日：1997-04-03
申请人： THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
发明人： THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK , MEADOWS, Henry, E. , BONNEAU, Robert, J.
IPC分类号： H04N07/30
CPC分类号： H04N19/186 , G06K9/00221 , G06K9/00268 , G06K9/6203 , H04N19/20 , H04N19/61 , H04N19/619 , H04N19/63 , H04N19/645 , H04N19/99
摘要： Digital image data is compressed by a technique combining the advantages of both wavelet and fractal encoding. The technique produces an encoded image which can be efficiently matched to other compressed images in order to identify the image being processed. The encoding technique spatially decimates the images (201) at numerous frequency scales produced by wavelet transformations and forms blocks comprising of groups of pixels at each frequency scale (270, 272, 274). The average modulus and angle values of the data in each block are compared to the next higher scale (109). Each frequency scale is then encoded for the blocks which have corresponding matching blocks in the adjacent scale (111). The technique provides the edge retention benefits of wavelet and the compression benefits of fractal encoding and also accelerates the matching process between the scales. A decoding technique which includes a synthetic edge procedure is used to reconstruct the image.
摘要翻译：通过组合小波和分形编码的优点的技术来压缩数字图像数据。该技术产生可以有效地匹配其他压缩图像的编码图像，以便识别正在处理的图像。编码技术以多个由小波变换产生的频率空间地抽取图像（201），并且形成包括每个频率标度的像素组（270,272,274）的块。将每个块中的数据的平均模量和角度值与下一个较高比例（109）进行比较。然后对于在相邻标尺（111）中具有相应匹配块的块编码每个频率标度。该技术提供小波的边缘保留优势和分形编码的压缩优势，并且加速了尺度之间的匹配过程。使用包括合成边缘过程的解码技术来重构图像。

7. 发明申请

WO1997029594A1 METHOD AND APPARATUS FOR THE REDUCTION OF BLOCKING EFFECTS IN IMAGES 审中-公开
标题翻译：减少图像中阻塞效应的方法和装置
公开(公告)号：WO1997029594A1
公开(公告)日：1997-08-14
申请号：PCT/US1997000499
申请日：1997-01-10
申请人： SONY CORPORATION , SONY ELECTRONICS, INC.
发明人： SONY CORPORATION , SONY ELECTRONICS, INC. , CHANG, Ching-Fang , LEE, Chuen-Chien
IPC分类号： H04N07/30
CPC分类号： H04N19/527 , H04N19/86
摘要： A method and apparatus to post process decompressed image data to minimize blocking effects without affecting the sharpness of the image.
摘要翻译：一种用于过程解压缩的图像数据以最小化阻塞效果而不影响图像的清晰度的方法和装置。

8. 发明申请

WO1996026612A2 DEVICE AND METHOD FOR CODING VIDEO PICTURES 审中-公开
标题翻译：用于编码视频图像的设备和方法
公开(公告)号：WO1996026612A2
公开(公告)日：1996-08-29
申请号：PCT/IB1996000129
申请日：1996-02-15
申请人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB
发明人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB , BREEUWER, Marcel , KLEIN GUNNEWIEK, Reinier, Bernardus, Maria
IPC分类号： H04N07/30
CPC分类号： H04N19/18 , H04N19/115 , H04N19/126 , H04N19/146 , H04N19/149 , H04N19/172 , H04N19/176 , H04N19/60
摘要： The bitrate control of known video encoders is based on a control of the quantization step size per picture block. In transform coding of relatively large picture blocks, the video picture comprises a too small number of picture blocks to obtain a desired number of bits per picture. In conformity with the invention, the target value for the number of bits per picture block is divided into N sub-targets (Rt(k,n)). The series of coefficients of a picture block is divided into N segments (L(n)) with reference to an estimation for the cumulative distribution (20) of the bit cost per picture block. The quantization step size is subsequently adapted per segment to the corresponding sub-target. Since the number of segments is N times larger than the number of picture blocks, an accurate bitrate control is possible. If desired, the estimation for the cumulative distribution is adapted from picture to picture.
摘要翻译：已知视频编码器的比特率控制基于每个图像块的量化步长的控制。在相对大的图像块的变换编码中，视频图像包括太少数量的图像块以获得每图像所需的位数。根据本发明，每个图像块的位数目标值被划分为N个子目标（Rt（k，n））。参考每个图像块的比特成本的累积分布（20）的估计，将图像块的一系列系数分为N个段（L（n））。随后，每个段将量化步长适应于相应的子目标。由于段的数量比图像块的数量大N倍，因此可以进行精确的比特率控制。如果需要，累积分布的估计是从图片到图片进行的。

9. 发明申请

WO1996025823A2 METHOD AND DEVICE FOR TRANSCODING VIDEO SIGNALS 审中-公开
标题翻译：用于传输视频信号的方法和装置
公开(公告)号：WO1996025823A2
公开(公告)日：1996-08-22
申请号：PCT/IB1996000057
申请日：1996-01-25
申请人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB
发明人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB , KEESMAN, Gerrit, Johan , VAN OTTERLOO, Petrus, Johannes
IPC分类号： H04N07/30
CPC分类号： H04N19/40 , H04N19/115 , H04N19/124 , H04N19/14 , H04N19/146 , H04N19/152 , H04N19/159 , H04N19/176 , H04N19/61
摘要： A method of transcoding coded video signals and a corresponding device for implementing this method are described. The device comprises a decoding and encoding sub-assemblies (201, 202) and, within said encoding sub-assembly, quantizing means (23) and bitrate control means. This bitrate control means comprises, before said quantizing means (23), means for computing a local target value for encoding each sub-picture of the images to which video signals correspond and means for controlling the step size during the quantizing step.
摘要翻译：描述了对编码的视频信号进行代码转换的方法和用于实现该方法的相应装置。该装置包括解码和编码子组件（201,202），并且在所述编码子组件内，量化装置（23）和比特率控制装置。该比特率控制装置在所述量化装置（23）之前包括用于计算用于编码视频信号对应的图像的每个子图像的局部目标值的装置和用于在量化步骤期间控制步长的装置的装置。

10. 发明申请

WO1999018735A1 PICTURE MASKING AND COMPOSITING IN THE FREQUENCY DOMAIN 审中-公开
标题翻译：在频域中的图像掩蔽和组合
公开(公告)号：WO1999018735A1
公开(公告)日：1999-04-15
申请号：PCT/US1998020783
申请日：1998-10-02
申请人： THOMSON CONSUMER ELECTRONICS
发明人： THOMSON CONSUMER ELECTRONICS , JONSSON, Ragnar, H.
IPC分类号： H04N07/30
CPC分类号： H04N5/265 , H04N19/48 , H04N19/60 , H04N19/90
摘要： Processing image signals. At least one image signal and a mask signal are received, wherein the image signal and mask signal are in the discrete cosine transform (DCT) domain. Masking of the image signal is performed in the DCT domain, in accordance with the mask signal, by representing the masking in terms of the DCT basis functions, to provide an output image signal.
摘要翻译：处理图像信号。接收至少一个图像信号和掩码信号，其中图像信号和掩模信号处于离散余弦变换（DCT）域中。通过根据DCT基函数表示掩码，根据掩码信号在DCT域中执行图像信号的掩蔽，以提供输出图像信号。

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