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1. 发明授权

US5841473A Image sequence compression and decompression 失效
标题翻译：图像序列压缩和解压缩
公开(公告)号：US5841473A
公开(公告)日：1998-11-24
申请号：US732491
申请日：1996-10-31
申请人： Charles K. Chui , Jianrong Wang
发明人： Charles K. Chui , Jianrong Wang
IPC分类号： G06T9/00 , H04N7/26 , H04N7/50
CPC分类号： H04N19/635 , H04N19/61 , H04N19/63 , H04N19/115 , H04N19/146
摘要： A method and system for compressing and decompressing a sequence of image frames is disclosed. According to the disclosed embodiments of the invention, the compression process includes an intraframe decomposition process (24, 24') performed upon each frame in both the row and column directions, including an m.sup.th order averaging and differencing operation (56, 62). Each frame is then combined with others in an adjacent pair or group of four by way of an interframe decomposition (28). Quantization (30) is then performed, preferably by division of each coefficient by a quantizer (.rho.) associated with the one of the frequency component subbands containing the coefficient. Reconstruction of the compressed frames is accomplished by performing the inverse of the compression process. According to the disclosed embodiments, either the compression or decompression processes and systems performs Cholesky filtering (60, 66; 170, 172), preferably in a recursive manner by way of forward and backward filtering. In this way, one or the other of the compression system (CS) or decompression system (DS) is relieved from a significant amount of computing burden.
摘要翻译： PCT No.PCT / US96 / 12326 Sec。 371日期：1996年10月31日 102（e）日期1996年10月31日PCT PCT 1996年7月26日PCT公布。公开号WO97 / 06642 1997年2月20日公开了一种用于压缩和解压缩一系列图像帧的方法和系统。根据本发明公开的实施例，压缩过程包括在行和列方向上的每个帧上执行的帧内分解处理（24,24'），包括第m阶平均和差分操作（56,62）。然后通过帧间分解（28）将每个帧与相邻的一对或四组中的其他帧组合。然后，优选地通过与包含系数的频率分量子带之一相关联的量化器（rho）对每个系数进行除法来执行量化（30）。压缩帧的重建是通过执行压缩过程的逆来完成的。根据所公开的实施例，压缩或解压缩过程和系统优选地通过前向和后向过滤以递归方式执行Cholesky过滤（60,66; 170,172）。以这种方式，压缩系统（CS）或解压缩系统（DS）中的一个或另一个减轻了大量的计算负担。

2. 发明授权

US07174020B2 System and method for real-time secure communication based on multi-level transform and encryption 有权
标题翻译：基于多级变换和加密的实时安全通信系统和方法
公开(公告)号：US07174020B2
公开(公告)日：2007-02-06
申请号：US10278162
申请日：2002-10-21
申请人： Charles K. Chui
发明人： Charles K. Chui
IPC分类号： H04K1/04
CPC分类号： H04L9/088 , H04K1/00 , H04N19/635
摘要： A stream of data is encoded by applying a multilevel transform to the stream of data, each level of the transform producing one or more transform coefficients for each block of a sequence of blocks in the stream of data. Encryption is applied to at least a subset of the transform coefficients produced by a least one level of the multilevel transform. Furthermore, at least one level of the multilevel transform is applied to the encrypted transform coefficients. The multilevel transform and encryption operations generate a result set of transform coefficients. The result set of transform coefficients may be encrypted, using a symmetric key encryption, to generate an output data stream that is then transmitted from a sending device to a receiving device. The encoding method may be performed in real time, producing the output data stream at a same rate as the stream of data is presented for encoding.
摘要翻译：通过对数据流应用多级变换来对数据流进行编码，转换的每个级别为数据流中的块序列的每个块产生一个或多个变换系数。加密被应用于由多级变换的至少一个级别产生的变换系数的至少一个子集。此外，将多级变换的至少一个级别应用于加密的变换系数。多级变换和加密操作生成变换系数的结果集。可以使用对称密钥加密来加密变换系数的结果集，以生成随后从发送设备发送到接收设备的输出数据流。可以实时地执行编码方法，以与呈现编码的数据流相同的速率产生输出数据流。

3. 发明授权

US06411305B1 Image magnification and selective image sharpening system and method 有权
标题翻译：图像放大和选择性图像锐化系统和方法
公开(公告)号：US06411305B1
公开(公告)日：2002-06-25
申请号：US09307548
申请日：1999-05-07
申请人： Charles K. Chui
发明人： Charles K. Chui
IPC分类号： G09G500
CPC分类号： G06T5/20 , G06T3/40 , G06T5/003 , G06T2207/20012 , G06T2207/20192
摘要： An initial magnified image is generated using a lowpass magnification filter. The resulting image will generally have smaller image data gradients than the original image. Portions of the image that the user, or an application, want to sharpen are selected, and the corresponding portions of the original image data are highpass filtered by one or more highpass filters to generate sharpening data. The initial magnified image data and the sharpening data are combined to generate a sharpened magnified image. In a preferred embodiment, two highpass filters are used, and a distinct sharpening parameter is used to scale the coefficients in each of the two highpass filters. The sharpening parameters are user selectable. This gives the user greater control over the image sharpening process than use of a single highpass filter.
摘要翻译：使用低通滤波器生成初始放大图像。所得到的图像通常具有比原始图像更小的图像数据梯度。选择用户或应用程序想要锐化的图像的部分，并且原始图像数据的相应部分被一个或多个高通滤波器高通滤波以产生锐化数据。初始放大图像数据和锐化数据被组合以产生锐化的放大图像。在优选实施例中，使用两个高通滤波器，并且使用不同的锐化参数来缩放两个高通滤波器中的每一个中的系数。锐化参数可由用户选择。这使得用户对图像锐化处理的控制比使用单个高通滤波器更大。

4. 发明授权

US06229926B1 Memory saving wavelet-like image transform system and method for digital camera and other memory conservative applications 有权
标题翻译：记忆保存小波状图像变换系统及方法，用于数码相机等内存保守应用
公开(公告)号：US06229926B1
公开(公告)日：2001-05-08
申请号：US09358876
申请日：1999-07-22
申请人： Charles K. Chui , Lefan Zhong
发明人： Charles K. Chui , Lefan Zhong
IPC分类号： G06K936
CPC分类号： H04N19/645 , G06F17/148 , H04N5/772 , H04N5/907 , H04N5/9264
摘要： A digital camera includes a data capture device and data processing circuitry for processing image data representing captured images. The data processing circuitry processes tiles of the image data in a predefined order to generated processed image data, which is then stored as a data image file. The tiles are nonoverlapping portions of the image data. Each tile of image data is processing by applying a predefined sequence of transform layers to the tile of image data so as to generate successive layers of transform coefficients. In a preferred embodiment, the transform layers are successive applications of a wavelet-like decomposition transform. While each tile is processed, a predefined set of edge transform coefficients from a plurality of the transform layers are saved in memory for use while processing neighboring tiles. Further, the step of processing each tile includes applying at least a plurality of the transform layers to both transform coefficients generated by a prior transform layer and corresponding ones of the edge transform coefficients that were previously saved in memory while processing tiles neighboring the tile being processed. However, for some tiles along the edge of the image, there will be no edge transform coefficients from previously processed tiles to be used while processing the current tile.
摘要翻译：数字照相机包括用于处理表示拍摄图像的图像数据的数据采集装置和数据处理电路。数据处理电路以预定义的顺序处理图像数据的片，以生成经处理的图像数据，然后将其作为数据图像文件存储。这些图块是图像数据的非重叠部分。图像数据的每个图块是通过将预定义的变换层序列应用于图像数据的图块来进行处理，以便生成连续的变换系数层。在优选实施例中，变换层是小波样分解变换的连续应用。当处理每个瓦片时，来自多个变换层的预定义的一组边缘变换系数被保存在存储器中用于处理相邻的瓦片。此外，处理每个瓦片的步骤包括将至少多个变换层应用于先前存储在存储器中的由先前变换层生成的变换系数和先前存储在存储器中的对应的边缘变换系数，同时处理与被处理的块相邻的片。然而，对于沿着图像边缘的一些瓦片，在处理当前瓦片期间将不存在将使用来自先前处理的瓦片的边缘变换系数。

5. 发明授权

US5604824A Method and apparatus for compression and decompression of documents and the like using splines and spline-wavelets 失效
标题翻译：使用样条和样条小波对文件等进行压缩和解压缩的方法和装置
公开(公告)号：US5604824A
公开(公告)日：1997-02-18
申请号：US310731
申请日：1994-09-22
申请人： Charles K. Chui , Pak-Kay Yuen
发明人： Charles K. Chui , Pak-Kay Yuen
IPC分类号： G06T9/00 , H04N1/41 , H04N7/26 , G06K9/36
CPC分类号： H04N19/90 , H04N19/186 , H04N19/593 , H04N19/63 , H04N19/635 , H04N19/10 , H04N19/102 , H04N19/42
摘要： An apparatus and a corresponding method for performing compression and reconstruction of documents are disclosed. Compression of the document is performed by applying a scaling function and a wavelet function first in one direction (e.g., rows) and then in another direction (e.g., columns) to digital data representing the document. The scaling and wavelet functions correspond to spline and wavelet functions that are compactly supported over a convolution interval, and which can also be implemented by way of integer operations. Byte-packing may also be applied to the image data, without regard to pixel boundaries, allowing not only binary (two-color) documents to be compressed but also enabling the compression of more complex color documents. The spline-wavelet compression and reconstruction may be performed according to alternative methods, including dual-base wavelets, interpolatory wavelets, and wavelet packets.
摘要翻译：公开了一种用于执行文件的压缩和重构的装置和相应的方法。通过在一个方向（例如，行）上首先应用缩放函数和小波函数，然后在另一个方向（例如，列）上应用代表文档的数字数据来执行文档的压缩。缩放和小波函数对应于在卷积间隔上紧凑支持的样条和小波函数，并且还可以通过整数运算来实现。字节打包也可以应用于图像数据，而不考虑像素边界，不仅允许二进制（双色）文档被压缩，而且能够压缩更复杂的彩色文档。可以根据替代方法进行样条小波压缩和重建，包括双基小波，内插小波和小波包。

6. 发明授权

US08270469B2 Encoding video at multiple resolution levels 失效
标题翻译：以多个分辨率级别编码视频
公开(公告)号：US08270469B2
公开(公告)日：2012-09-18
申请号：US11639780
申请日：2006-12-15
申请人： Charles K. Chui , Haishan Wang
发明人： Charles K. Chui , Haishan Wang
IPC分类号： H04N7/12
CPC分类号： H04N19/59 , H04N19/107 , H04N19/159 , H04N19/169 , H04N19/172 , H04N19/176 , H04N19/30 , H04N19/31 , H04N19/40 , H04N19/46 , H04N19/61 , H04N19/70
摘要： A method and related system of encoding or re-encoding video is disclosed. In the method, video data comprising a sequence of frames is received. For a respective frame in the sequence of frames, a multi-level frame is generated comprising the respective frame and a plurality of copies of the respective frame. Each copy has an associated video resolution level that is a member of a predefined range of video resolution levels, ranging from a highest video resolution level to a lowest video resolution level. The multi-level frame is encoded.
摘要翻译：公开了编码或重新编码视频的方法和相关系统。在该方法中，接收包括帧序列的视频数据。对于帧序列中的相应帧，生成包括相应帧和相应帧的多个副本的多级帧。每个副本具有相关联的视频分辨率级别，其是预定范围的视频分辨率级别的成员，范围从最高视频分辨率级别到最低视频分辨率级别。多级帧被编码。

7. 发明申请

US20090320081A1 Providing and Displaying Video at Multiple Resolution and Quality Levels 审中-公开
标题翻译：以多重分辨率和质量水平提供和显示视频
公开(公告)号：US20090320081A1
公开(公告)日：2009-12-24
申请号：US12173768
申请日：2008-07-15
申请人： Charles K. Chui , Haishan Wang , Dongfang Shi
发明人： Charles K. Chui , Haishan Wang , Dongfang Shi
IPC分类号： H04N7/173 , H04B1/66
CPC分类号： H04N21/6377 , H04N7/17318 , H04N21/23439 , H04N21/4728 , H04N21/658 , H04N21/6587 , H04N21/845
摘要： A method provides video from a video data source comprising a sequence of multi-level frames. Each multi-level frame comprises multiple copies of a respective frame. Each copy has an associated video resolution or quality level that is a member of a predefined range of levels that range from a highest level to a lowest level. First video data corresponding to a first portion of a first copy of a respective frame and second video data corresponding to a second portion of a second copy of the respective frame are extracted from the video data source. The video resolution or quality level of the second copy is distinct from that of the first copy. The first and second video data are transmitted to a client device for display. The extracting and transmitting are repeated with respect to successive multi-level frames of the video data source.
摘要翻译：一种方法从包括多级帧序列的视频数据源提供视频。每个多级帧包括相应帧的多个副本。每个副本具有相关联的视频分辨率或质量级别，其是从最高级别到最低级别的预定义级别范围的成员。从视频数据源中提取对应于相应帧的第一副本的第一部分的第一视频数据和对应于相应帧的第二副本的第二部分的第二视频数据。第二个副本的视频分辨率或质量水平与第一个副本的视频分辨率或质量水平不同。将第一和第二视频数据发送到客户端设备进行显示。相对于视频数据源的连续多级帧重复提取和发送。

8. 发明授权

US06807308B2 Multi-resolution image data management system and method based on tiled wavelet-like transform and sparse data coding 失效
标题翻译：基于平铺小波变换和稀疏数据编码的多分辨率图像数据管理系统和方法
公开(公告)号：US06807308B2
公开(公告)日：2004-10-19
申请号：US10347422
申请日：2003-01-17
申请人： Charles K. Chui , Hong-Ye Gao , Lefan Zhong
发明人： Charles K. Chui , Hong-Ye Gao , Lefan Zhong
IPC分类号： G06K936
CPC分类号： G06F17/148 , G06F3/0481 , G06F2203/04806 , G06T3/403 , G06T3/4084 , G09G2340/0407 , H04N19/122 , H04N19/124 , H04N19/132 , H04N19/136 , H04N19/176 , H04N19/18 , H04N19/1883 , H04N19/36 , H04N19/46 , H04N19/59 , H04N19/63 , H04N19/635 , H04N19/64 , H04N19/645 , H04N19/647 , H04N19/80 , H04N21/234327 , H04N21/235 , H04N21/25825 , H04N21/2662 , H04N21/435 , H04N21/443 , H04N21/4621 , H04N21/4728
摘要： An image is divided into nonoverlapping tiles, and the tiles are processed in a predefined order. Each tile is processed by applying a predefined family of transform layers to the tile so as to generate successive sets of transform coefficients. The sets of transform coefficients correspond to spatial frequency subbands of the image. The subbands are grouped in accordance with the transform layer that generated them. For one or more respective groups of subbands one or more parameters are generated whose value is indicative of the density of image features in the tile. The tile is classified in accordance with the values of the one or more parameters. Based on the classification, a set of quantization factors for the tile are selected, and then the transform coefficients of the tile are scaled by the selected set of quantization factors to as to generate a set of quantized transform coefficients.
摘要翻译：图像被划分为不重叠的图块，并且以预定义的顺序处理图块。通过将预定义的变换层系列应用于瓦片来处理每个瓦片，以便生成连续的变换系数集合。变换系数集合对应于图像的空间频率子带。子带根据产生它们的变换层进行分组。对于一个或多个相应的子带组，生成一个或多个参数，其值表示瓦片中的图像特征的密度。瓦片根据一个或多个参数的值进行分类。基于分类，选择一组用于瓦片的量化因子，然后通过所选择的量化因子集来缩放瓦片的变换系数，以生成一组量化的变换系数。

9. 发明授权

US06600838B2 System and method for performing wavelet and inverse wavelet transformations of digital data using semi-orthogonal wavelets 有权
标题翻译：使用半正交小波进行数字数据的小波和逆小波变换的系统和方法
公开(公告)号：US06600838B2
公开(公告)日：2003-07-29
申请号：US09878986
申请日：2001-06-11
申请人： Charles K. Chui
发明人： Charles K. Chui
IPC分类号： G06K336
CPC分类号： G06F17/148
摘要： A wavelet transform system and an inverse wavelet transform system are disclosed that respectively implement a wavelet transform and an inverse wavelet transform. Semi-orthogonal standard wavelets are used as the basic wavelets in the wavelet transform and the inverse wavelet transform. As a result, two finite sequences of decomposition coefficients are used for decomposition in the wavelet transform. Furthermore, two finite sequences of reconstruction coefficients that are derived from the two finite sequences of decomposition coefficients are used for reconstruction in the inverse wavelet transform. The finite sequences of decomposition and reconstruction coefficients are not infinite sequences of coefficients that have been truncated. Furthermore, in one embodiment, downsampling is not used in the wavelet transform and upsampling is not used in the inverse wavelet transform.
摘要翻译：公开了分别实现小波变换和逆小波变换的小波变换系统和逆小波变换系统。半正交标准小波被用作小波变换和逆小波变换中的基本小波。结果，分解系数的两个有限序列用于小波变换中的分解。此外，从分解系数的两个有限序列导出的两个重构系数的有限序列用于逆小波变换中的重建。分解和重建系数的有限序列不是被截断的无限系数序列。此外，在一个实施例中，在小波变换中不使用下采样，并且在逆小波变换中不使用上采样。

10. 发明授权

US06407747B1 Computer screen image magnification system and method 有权
标题翻译：计算机屏幕图像放大系统和方法
公开(公告)号：US06407747B1
公开(公告)日：2002-06-18
申请号：US09307547
申请日：1999-05-07
申请人： Charles K. Chui , Haishan Wang
发明人： Charles K. Chui , Haishan Wang
IPC分类号： G09G500
CPC分类号： G06T3/0025 , G09G5/391 , G09G2340/0407 , G09G2340/045
摘要： An image magnifying method and apparatus magnifies a portion of an image displayed on a computer display device. The user of the computer selects a first region (called a magnification window) of the displayed image, for instance using a mouse or trackball pointer device. Image data from the screen buffer for the user selected magnification window is copied to a first buffer. A magnified image is generated from the copied image data and the magnified image is stored in the screen buffer so as to replace the copied image data. When the user moves the screen cursor, or otherwise selects a second magnification window that overlaps with the first, the magnification application copies image data for a combined window, covering both the first and second magnification windows, from the screen buffer to a second buffer. The image data stored in the first buffer is copied into the portion of the second buffer corresponding to the first magnification window, at which point the second buffer contains unmagnified data for the entire combined window. The application generates a magnified image for the second magnification window and stores it in a portion of the second buffer corresponding to the second magnification window. Finally, the portion of the second image buffer corresponding to the combined window is copied into the corresponding portion of the screen buffer. As a result, the magnification window moves smoothly from the first to the second window, without creating any flashing artifacts.
摘要翻译：图像放大方法和装置放大显示在计算机显示装置上的图像的一部分。计算机的用户选择显示图像的第一区域（称为放大窗口），例如使用鼠标或轨迹球指针装置。来自用户选择的放大窗口的屏幕缓冲区的图像数据被复制到第一缓冲器。从复印图像数据生成放大图像，并且将放大图像存储在屏幕缓冲器中，以便替换复制的图像数据。当用户移动屏幕光标或者另外选择与第一放大窗口重叠的第二放大窗口时，放大应用将组合窗口的图像数据复制到第一和第二放大窗口，从屏幕缓冲器到第二缓冲器。存储在第一缓冲器中的图像数据被复制到与第一放大窗口对应的第二缓冲器的部分中，此时第二缓冲器包含整个组合窗口的未放大数据。应用程序生成用于第二放大窗口的放大图像并将其存储在对应于第二放大窗口的第二缓冲器的一部分中。最后，对应于组合窗口的第二图像缓冲器的部分被复制到屏幕缓冲器的相应部分。结果，放大窗口从第一窗口平滑地移动到第二窗口，而不产生任何闪烁的伪影。

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