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1. 发明授权

US06597739B1 Three-dimensional shape-adaptive wavelet transform for efficient object-based video coding 有权
标题翻译：用于有效的基于对象的视频编码的三维形状自适应小波变换
公开(公告)号：US06597739B1
公开(公告)日：2003-07-22
申请号：US09597976
申请日：2000-06-20
申请人： Shipeng Li , Ya-Qin Zhang
发明人： Shipeng Li , Ya-Qin Zhang
IPC分类号： H04N730
CPC分类号： H04N19/649 , H04N19/13 , H04N19/20 , H04N19/577 , H04N19/61 , H04N19/615 , H04N19/62 , H04N19/63
摘要： A three-dimensional (3D) shape-adaptive discrete wavelet transform (SA-DWT) is provided for efficient object-based video coding. In a first stage, a one-dimensional SA-DWT is performed along the temporal direction among pixels that have temporal correspondence. The correspondence can be established by motion estimation or other matching approaches. SA-DWT in the temporal direction is used to treat emerging pixels, terminating pixels or pixels that have colliding correspondence pixels. After the temporal SA-DWT transform, the resulting temporal wavelet coefficients are placed in the spatial positions corresponding to the original pixels to maintain the spatial correlation within each frame. Then, in a second stage, a two-dimensional SA-DWT is applied to the temporal SA-DWT coefficients within each frame. The 3D SA-DWT can handle arbitrarily shaped video objects while providing flexible spatial and temporal scalability as in any wavelet-based coding scheme. The 3D SA-DWT can also track the video object motion and perform the wavelet transform among corresponding pixels for that object while keeping the spatial correlation within a frame.
摘要翻译：提供三维（3D）形状自适应离散小波变换（SA-DWT），用于高效的基于对象的视频编码。在第一阶段中，沿着具有时间对应关系的像素之间的时间方向执行一维SA-DWT。通信可以通过运动估计或其他匹配方法建立。时间方向的SA-DWT用于处理新出现的像素，终止具有碰撞对应像素的像素或像素。在时间SA-DWT变换之后，将所得到的时间小波系数放置在与原始像素对应的空间位置中，以保持每帧内的空间相关性。然后，在第二阶段中，将二维SA-DWT应用于每帧内的时间SA-DWT系数。 3D SA-DWT可以处理任意形状的视频对象，同时提供灵活的空间和时间可伸缩性，如在任何基于小波的编码方案中。 3D SA-DWT还可以跟踪视频对象运动，并在该对象的相应像素之间执行小波变换，同时保持帧内的空间相关性。

2. 发明授权

US06404812B1 Method and apparatus for controlling video encoder output bit rate using progressive re-quantization 失效
标题翻译：使用逐行重新量化来控制视频编码器输出比特率的方法和装置
公开(公告)号：US06404812B1
公开(公告)日：2002-06-11
申请号：US09156571
申请日：1998-09-17
申请人： Fernando C. M. Martins , Brian R. Nickerson
发明人： Fernando C. M. Martins , Brian R. Nickerson
IPC分类号： H04N730
CPC分类号： H04N19/423 , H04N19/124 , H04N19/14 , H04N19/149 , H04N19/15 , H04N19/152 , H04N19/17 , H04N19/172 , H04N19/174 , H04N19/192 , H04N19/20 , H04N19/42 , H04N19/61
摘要： A method for processing image data includes quantizing a region in a frame with an initial quantizer level. It is determined whether an amount of bits required for encoding the region after quantizing the region with the initial quantizer level is within a bit allocation budget. The region is re-quantized if the amount of bits is not within the bit allocation budget.
摘要翻译：一种用于处理图像数据的方法包括：对具有初始量化器电平的帧中的区域进行量化。确定在量化具有初始量化器级别的区域之后对区域进行编码所需的位数是否在位分配预算内。如果位数不在位分配预算范围内，则重新量化该区域。

3. 发明授权

US06359928B1 System and method for compressing images using multi-threshold wavelet coding 失效
标题翻译：使用多阈值小波编码压缩图像的系统和方法
公开(公告)号：US06359928B1
公开(公告)日：2002-03-19
申请号：US09162091
申请日：1998-09-28
申请人： Houng-Jyh Mike Wang , Yiliang Bao , Chung-Chieh Kuo , Homer H. Chen
发明人： Houng-Jyh Mike Wang , Yiliang Bao , Chung-Chieh Kuo , Homer H. Chen
IPC分类号： H04N730
CPC分类号： H04N19/1883 , H04N19/115 , H04N19/124 , H04N19/129 , H04N19/146 , H04N19/147 , H04N19/61 , H04N19/63 , H04N19/647
摘要： A system and method for performing image compression using multi-threshold wavelet coding (MTWC) which utilizes a separate initial quantization threshold for each subband generated by the wavelet transform, which substantially reduces the number of insignificant bits generated during the initial quantization steps. Further, the MTWC system chooses the order in which the subbands are encoded according to a preferred rate-distortion tradeoff in order to enhance the image fidelity. Moreover, the MTWC system utilizes a novel quantization sequence order in order to optimize the amount of error energy reduction in significant and refinement maps generated during the quantization step. Thus, the MTWC system provides a better bit rate-distortion tradeoff and performs faster than existing state-of-the-art wavelet coders.
摘要翻译：一种使用多阈值小波编码（MTWC）执行图像压缩的系统和方法，其利用由小波变换产生的每个子带的单独的初始量化阈值，这大大减少了在初始量化步骤期间产生的无效位的数量。此外，MTWC系统根据优选的速率 - 失真折衷来选择子带被编码的顺序，以增强图像保真度。此外，MTWC系统利用新颖的量化序列顺序来优化在量化步骤期间产生的显着和细化图中的误差能量减少量。因此，MTWC系统提供了更好的比特率失真折衷，并且比现有的最先进的小波编码器执行得更快。

4. 发明授权

US06760443B2 Custom character-coding compression for encoding and watermarking media content 有权
标题翻译：用于编码和水印媒体内容的自定义字符编码压缩
公开(公告)号：US06760443B2
公开(公告)日：2004-07-06
申请号：US09863286
申请日：2001-05-24
申请人： John Blakeway Lacy , Schuyler Reynier Quackenbush , James H. Snyder
发明人： John Blakeway Lacy , Schuyler Reynier Quackenbush , James H. Snyder
IPC分类号： H04N730
CPC分类号： H04N21/8358 , G06T1/0021 , G06T2201/0053 , G11B20/00007 , G11B20/00086 , G11B20/0021 , G11B20/00884 , H04N19/00 , H04N21/23892
摘要： A method of compressing media content in which a first predetermined portion of a media content is compressed using a first data-based compression algorithm and inserted into a first portion of a data frame. A second predetermined portion of the media content is compressed using a second data-based compression algorithm and is inserted into a second portion of the data frame. The second predetermined portion of the media content is different from the first predetermined portion of the media content, and the second data-based compression algorithm is different from the first data-based compression algorithm. At least one of the first and second data-based compression algorithms is a private data-based compression algorithm. A plurality of data frames are generated and are made available for distribution, for example, by transmission over a computer network, such as the Internet.
摘要翻译：一种压缩媒体内容的方法，其中使用第一基于数据的压缩算法来压缩媒体内容的第一预定部分并将其插入数据帧的第一部分。使用第二基于数据的压缩算法来压缩媒体内容的第二预定部分，并将其插入数据帧的第二部分。媒体内容的第二预定部分与媒体内容的第一预定部分不同，第二基于数据的压缩算法与第一基于数据的压缩算法不同。第一和第二基于数据的压缩算法中的至少一个是基于私有数据的压缩算法。生成多个数据帧，并且例如通过诸如因特网之类的计算机网络的传输可用于分发。

5. 发明授权

US06504872B1 Down-conversion decoder for interlaced video 有权
标题翻译：用于隔行视频的下变频解码器
公开(公告)号：US06504872B1
公开(公告)日：2003-01-07
申请号：US09627916
申请日：2000-07-28
申请人： Mark Fimoff , Jin H. Kim , Scott M. LoPresto
发明人： Mark Fimoff , Jin H. Kim , Scott M. LoPresto
IPC分类号： H04N730
CPC分类号： H04N19/198 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/147 , H04N19/157 , H04N19/16 , H04N19/176 , H04N19/44 , H04N19/59 , H04N19/80 , H04N19/90
摘要： A downsampling apparatus converts a received DCT coefficient macroblock to a reconstructed pixel block and includes an IDCT module that performs an inverse DCT on the received DCT coefficient macroblock to produce a first intermediate block. A horizontal downsampler horizontally downsamples the first intermediate block to produce a second intermediate block. A calculation module calculates first and second errors. The first and second errors are calculated based upon a difference between the first intermediate block and first and second downsampled/upsampled versions of the first intermediate block derived from corresponding first and second vertical downsampling filters. A filtering module vertically downsamples the second intermediate block using the first or second vertical downsampling filter depending upon whether the first or second error is smaller. A motion compensator adds prediction reference pixels to the horizontally and vertically downsampled block, as appropriate, to form reconstructed pixels.
摘要翻译：下采样装置将接收的DCT系数宏块转换为重构的像素块，并且包括对所接收的DCT系数宏块执行逆DCT以产生第一中间块的IDCT模块。水平下采样器水平向下采样第一中间块以产生第二中间块。计算模块计算第一和第二个错误。基于从对应的第一和第二垂直下采样滤波器导出的第一中间块的第一中间块和第一和第二下采样/上采样版本之间的差计算第一误差和第二误差。滤波模块使用第一或第二垂直下采样滤波器垂直地下采样第二中间块，取决于第一或第二误差是否较小。运动补偿器适当地将预测参考像素添加到水平和垂直下采样块，以形成重建像素。

6. 发明授权

US06304606B1 Image data coding and restoring method and apparatus for coding and restoring the same 失效
标题翻译：用于对其进行编码和恢复的图像数据编码和恢复方法和装置
公开(公告)号：US06304606B1
公开(公告)日：2001-10-16
申请号：US09179857
申请日：1998-10-28
申请人： Kimitaka Murashita , Tsugio Noda
发明人： Kimitaka Murashita , Tsugio Noda
IPC分类号： H04N730
CPC分类号： H04N9/8047 , H04N9/8042 , H04N19/107 , H04N19/124 , H04N19/126 , H04N19/132 , H04N19/503 , H04N19/507 , H04N19/587 , H04N19/60 , H04N19/61 , H04N19/70
摘要： When encoding the continuous image by dividing the respective frames into a plurality of blocks, the image in the block in the present frame is compared with a corresponding image in the block in the same position of the reference frame and the amount of the changes of the predetermined image element within respective blocks is calculated. Only when the amount of change exceeds the predetermined threshold value, the image data of respective blocks is coded. A plurality of threshold values can be adapted and appropriately changed by considering a spatially changing pattern of the amount of the change of the image from the reference frame or a refreshing operation.
摘要翻译：当通过将各个帧划分为多个块来对连续图像进行编码时，将当前帧中的块中的图像与参考帧的相同位置中的块中的相应图像进行比较，计算相应块内的预定图像元素。仅当变化量超过预定阈值时，对各个块的图像数据进行编码。可以通过考虑来自参考帧的图像变化量的空间变化模式或刷新操作来适应和适当地改变多个阈值。

7. 发明授权

US06768518B1 Method and apparatus for removing a checkerboard-like noise artifact from a captured composite NTSC video frame 失效
标题翻译：从捕获的复合NTSC视频帧中去除棋盘样噪声伪像的方法和装置
公开(公告)号：US06768518B1
公开(公告)日：2004-07-27
申请号：US09213649
申请日：1998-12-16
申请人： Gozde Bozdagi
发明人： Gozde Bozdagi
IPC分类号： H04N730
CPC分类号： H04N5/4448 , G06T5/002 , G06T5/10 , G06T2207/10016 , G06T2207/20064 , G06T2207/20192 , H04N5/21
摘要： A wavelet domain filtering technique is disclosed that removes or at least minimizes checkerboard-like noise artifacts that result from capturing a composite NTSC video signal. A Haar basis filter bank is used to obtain a two-level wavelet decomposition. Low-pass filtering is performed on the high-high (HH) and the high-low (HL) bands of the wavelet decomposition since the checkerboard-like noise artifact is primarily visible on the vertical and the diagonal edges of the captured composite NTSC video frame.
摘要翻译：公开了一种小波域滤波技术，其移除或至少最小化捕获复合NTSC视频信号所产生的棋盘样噪声伪像。哈尔基滤波器组用于获得两级小波分解。在小波分解的高高（HH）和高 - 低（HL）频带上执行低通滤波，因为棋盘样噪声伪影主要在捕获的复合NTSC视频的垂直和对角线边缘上可见帧。

8. 发明授权

US06763070B1 Methods and apparatus for selecting a cut-off index 有权
标题翻译：用于选择截止指数的方法和装置
公开(公告)号：US06763070B1
公开(公告)日：2004-07-13
申请号：US09870177
申请日：2001-05-29
申请人： Yuen-Wen Lee
发明人： Yuen-Wen Lee
IPC分类号： H04N730
CPC分类号： H04N19/40 , H04N19/132 , H04N19/146 , H04N19/164 , H04N19/18 , H04N19/61
摘要： Methods and apparatus are provided for selecting a cut-off index to filter transform coefficients associated with an input bitstream to provide filtered transform coefficients associated with a rescaled output bitstream. An arrangement of transform coefficients associated with an input data sequence (e.g. an audio segment or a video image block) is filtered using a cut-off index to provide modified transform coefficients associated with a modified output data sequence. Information including information about the input data sequence and the modified output data sequence can be used to update the filter cut-off index for reduction of future data sequences.
摘要翻译：提供了用于选择截止指数以滤除与输入比特流相关联的变换系数的方法和装置，以提供与重新缩放的输出比特流相关联的滤波变换系数。使用截止指数来过滤与输入数据序列（例如音频段或视频图像块）相关联的变换系数的布置，以提供与修改的输出数据序列相关联的修改的变换系数。可以使用包括关于输入数据序列和修改的输出数据序列的信息的信息来更新滤波器截止指数以减少将来的数据序列。

9. 发明授权

US06665343B1 Methods and arrangements for a converting a high definition image to a lower definition image using wavelet transforms 失效
标题翻译：使用小波变换将高清晰度图像转换为较低清晰度图像的方法和布置
公开(公告)号：US06665343B1
公开(公告)日：2003-12-16
申请号：US09151428
申请日：1998-09-11
申请人： Musa Jahanghir , Jack Chaney , Michael A. Kaufman
发明人： Musa Jahanghir , Jack Chaney , Michael A. Kaufman
IPC分类号： H04N730
CPC分类号： H04N7/0125 , G06T3/4084 , H04N19/63
摘要： Systems are provided for converting high definition pictures or data to lower definition images using wavelet transforms. In the preferred embodiments, the wavelet transforms are be used in either the transmission/coding or reception/decoding phase for enabling a more efficient conversion of the signal and providing a more robust and accurate output. The wavelet transforms may be applied to conventional systems to enhance performance or entire transmission and reception systems may be designed where the wavelet transforms are applied to the data for coding, decoding and decimation operations.
摘要翻译：提供系统用于使用小波变换将高清晰度图像或数据转换为较低清晰度图像。在优选实施例中，小波变换可用于发射/编码或接收/解码阶段，以便能够更有效地转换信号并提供更鲁棒和准确的输出。小波变换可以应用于常规系统以增强性能，或者可以设计整个发射和接收系统，其中将小波变换应用于用于编码，解码和抽取操作的数据。

10. 发明授权

US06466620B1 Method and apparatus for adaptively coding video signals 有权
标题翻译：用于对视频信号进行自适应编码的方法和装置
公开(公告)号：US06466620B1
公开(公告)日：2002-10-15
申请号：US09186334
申请日：1998-11-05
申请人： Sang-Hoon Lee
发明人： Sang-Hoon Lee
IPC分类号： H04N730
CPC分类号： H04N19/60 , H04N19/61 , H04N19/63
摘要： The method and apparatus capable of adaptively coding intra-video signals by separately predicting intra DC and AC coefficients is provided. The method comprises the steps of finding a DC reference block among the previously coded blocks based on a correlation of the DC coefficients of the previously coded blocks; setting a DC coefficient of the DC reference block as a DC reference coefficient; determining one of the previously coded blocks as an AC reference block based on a correlation of selected AC coefficients of the previously coded blocks; generating AC reference coefficients based on AC coefficients of the AC reference block; and encoding coefficients of the current block based on the DC and the AC reference coefficients. The apparatus includes a transform block, a quantization block, a memory, a prediction block, and an entropy coding block.
摘要翻译：提供了能够通过单独预测内部DC和AC系数自适应地对视频内信号进行编码的方法和装置。该方法包括以下步骤：基于先前编码的块的DC系数的相关性，在先前编码的块中找到DC参考块; 将DC参考块的DC系数设置为DC参考系数; 基于先前编码的块的所选AC系数的相关性，将先前编码的块中的一个确定为AC参考块; 基于AC参考块的AC系数产生AC参考系数; 以及基于DC和AC参考系数对当前块的系数进行编码。该装置包括变换块，量化块，存储器，预测块和熵编码块。

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