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1. 发明授权

US10360046B2 Using contextual and spatial awareness to improve remote desktop imaging fidelity 有权
公开(公告)号：US10360046B2
公开(公告)日：2019-07-23
申请号：US15436097
申请日：2017-02-17
申请人： VMware, Inc.
发明人： Lawrence Spracklen , Banit Agrawal , Rishi Bidarkar
IPC分类号： G06F3/14 , G06K9/34 , G06T3/40 , G06F9/451 , H04N1/411 , H04N1/415
摘要： Image data representing a desktop image for a client device that is accessing the desktop remotely is compressed according to a method that preserves image fidelity in selected non-text regions. The method, which is carried out in a remote server, includes the steps of generating image data for the remote desktop image and analyzing different regions of the remote desktop image, identifying those regions of the remote desktop image that are text regions, selecting non-text regions of the remote desktop image for lossless compression based on a spatial relationship between the non-text regions and the text regions, compressing the image data using a lossless compression protocol for a portion of the image data corresponding to the selected non-text regions, and transmitting the compressed image data to the client device.

2. 发明申请

US20050123206A1 Image compression method, image restoration method, program and apparatus 失效
标题翻译：图像压缩方法，图像恢复方法，程序和装置
公开(公告)号：US20050123206A1
公开(公告)日：2005-06-09
申请号：US11038603
申请日：2005-01-21
申请人： Kenichiro Sakai , Tsugio Noda
发明人： Kenichiro Sakai , Tsugio Noda
IPC分类号： G06K9/36 , H04N1/41 , H04N1/415 , H04N7/26 , H04N7/34
CPC分类号： H04N1/4105 , H04N19/105 , H04N19/136 , H04N19/137 , H04N19/176 , H04N19/46 , H04N19/593
摘要： An image compression divides an input image into blocks having the predetermined number of horizontal and longitudinal pixels, and scans the divided blocks in a main scan direction and a sub scan direction so as to select them in order as a processing block, and selects as a reference block a block in which positional relation with the selected block and a relation of a pixel value satisfies a predetermined condition. Subsequently, the pixel values of the processing block and the reference block are subjected to an exclusive-OR (XOR) so as to generate a differential image, and in case the differential image satisfies the predetermined condition, the processing block is replaced with the differential image. Further, the image including the differential image obtained by executing the block replacement in the processing block is encoded, and the code data obtained by executing this image encoding, the presence or absence of replacement with the differential image of each processing block obtained by executing the block replacement, and positional information of the reference block are combined and outputted. The image decoding is executed in such way that the image including the differential image from the code data is decoded, and this decoded image is decoded into the original image by an exclusive-OR with the processing block which is divided into blocks and the reference block.
摘要翻译：图像压缩将输入图像分割为具有预定数量的水平和纵向像素的块，并且在主扫描方向和副扫描方向上扫描分割块以便按顺序选择它们作为处理块，并选择为参考块，其中与所选块的位置关系和像素值的关系满足预定条件的块。随后，对处理块和参考块的像素值进行异或（XOR）以产生差分图像，并且在差分图像满足预定条件的情况下，将处理块替换为差分图片。此外，对包含通过在处理块中执行块替换而获得的差分图像的图像进行编码，并且通过执行该图像编码获得的代码数据，通过执行该图像编码而获得的每个处理块的差分图像是否存在块替换和参考块的位置信息被组合并输出。执行图像解码，使得包括来自代码数据的差分图像的图像被解码，并且该解码图像通过与分割成块的处理块进行异或而被解码为原始图像，并且参考块。

3. 发明授权

US6125142A Method and apparatus for encoding object information of a video object plane 失效
标题翻译：用于编码视频对象平面的对象信息的方法和装置
公开(公告)号：US6125142A
公开(公告)日：2000-09-26
申请号：US984030
申请日：1997-12-02
申请人： Seok-Won Han
发明人： Seok-Won Han
IPC分类号： G06T9/00 , H04N1/415 , H04N7/26 , H04N7/30 , H04N47/12 , H04N11/02 , H04N11/04
CPC分类号： H04N19/649 , H04N19/20 , H04N19/563
摘要： A method for encoding a video signal including a video object plane(VOP) and object information thereof, the VOP having an object therein, divides the VOP into a plurality of blocks and detecting boundary blocks and object blocks, wherein each boundary block includes therein background pixels and object pixels and each object block includes therein object pixels only, the background and the object pixels representing pixels residing outside and inside the object, respectively. Then the object information is converted into a set of object symbols and each object symbol is added to a background pixel included in a boundary block to thereby produce processing blocks, the processing blocks including the object blocks and one or more processed boundary blocks having therein the object symbols and the remaining unprocessed boundary blocks. The processing blocks are encoded to thereby generate an encoded video signal.
摘要翻译：一种用于编码包括视频对象平面（VOP）和其对象信息的视频信号的方法，其中具有对象的VOP将VOP分割成多个块并检测边界块和对象块，其中每个边界块包括背景像素和对象像素，并且每个对象块在其中仅包括对象像素，分别表示驻留在对象外部和内部的像素的背景和对象像素。然后将对象信息转换成一组对象符号，并且将每个对象符号添加到边界块中包括的背景像素中，从而产生处理块，包括对象块的处理块和其中具有对象符号和剩余的未处理的边界块。对处理块进行编码，从而生成编码视频信号。

4. 发明授权

US6055017A Adaptive scanning technique for efficient wavelet video coding 失效
标题翻译：用于高效小波视频编码的自适应扫描技术
公开(公告)号：US6055017A
公开(公告)日：2000-04-25
申请号：US820159
申请日：1997-03-19
申请人： Sheng Mei Shen , Thiow Keng Tan
发明人： Sheng Mei Shen , Thiow Keng Tan
IPC分类号： H04N19/60 , G06T9/00 , H03M7/30 , H04N1/41 , H04N19/423 , H04N19/50 , H04N19/503 , H04N19/51 , H04N19/61 , H04N19/635 , H04N19/85 , H04N19/91 , H04N19/93 , H04N1/415 , H04N7/50
CPC分类号： H04N19/61 , H04N19/129 , H04N19/63 , H04N19/115 , H04N19/146
摘要： A wavelet video coding method using adaptive scanning includes subjecting the input video signal to a horizontal and a vertical wavelet decomposition to obtain base, horizontal, vertical and diagonal bands of wavelet coefficients; recursively subjecting the resulting base band to further wavelet decomposition to obtain lower layers of base, horizontal, vertical and diagonal bands of wavelet coefficients; grouping the co-sited coefficients from the different layers of horizontal, vertical and diagonal bands into horizontal, vertical and diagonal macro-bands, respectively; adaptively quantizing the above coefficients in the horizontal, vertical and diagonal macro-bands, respectively; adaptively scanning and differentially coding the quantized coefficients in the macro-bands into one dimensional arrays, using a technique which depends on the orientation of the macro-bands and the distribution of the coefficients, and entropy coding each of the arrays.
摘要翻译：使用自适应扫描的小波视频编码方法包括对输入视频信号进行水平和垂直小波分解以获得小波系数的基，水平，垂直和对角频带; 对所得到的基带进行递归地进行小波分解以获得小波系数的基底，水平，垂直和对角带的较低层; 将来自水平，垂直和对角线频带的不同层的相关系数分别分别分别为水平，垂直和对角宏波段; 分别对水平，垂直和对角宏波段中的上述系数进行自适应量化; 使用取决于宏频带的取向和系数的分布以及对每个阵列进行熵编码的技术，将宏波段中的量化系数自适应地扫描和差分编码为一维阵列。

5. 发明授权

US5995171A Coding and/or decoding apparatus for decoding variable-length coded image information 失效
标题翻译：用于解码可变长度编码图像信息的编码和/或解码装置
公开(公告)号：US5995171A
公开(公告)日：1999-11-30
申请号：US478677
申请日：1995-06-07
申请人： Masahiko Enari , Ikuo Watanabe
发明人： Masahiko Enari , Ikuo Watanabe
IPC分类号： H04N1/415 , G06T9/00 , H04N19/102 , H04N19/132 , H04N19/134 , H04N19/166 , H04N19/172 , H04N19/196 , H04N19/423 , H04N19/46 , H04N19/59 , H04N19/60 , H04N19/625 , H04N19/65 , H04N19/67 , H04N19/70 , H04N19/85 , H04N19/89 , H04N19/895 , H04N19/91 , H04N19/93 , H04N21/438 , H04N7/32
CPC分类号： H04N19/98 , H04N19/60 , H04N19/13 , H04N19/91
摘要： In an apparatus for decoding image information which has been variable-length coded on a block unit basis of a plurality of pixels, the image information is decoded on the block unit basis, the number of blocks decoded in a predetermined period of time is counted, and the decoded image information is corrected by using the result of the counting.
摘要翻译：在用于解码以多个像素为单位的块单位可变长度编码的图像信息的装置中，以块为单位对图像信息进行解码，计数在预定时间段内解码的块数，并且通过使用计数的结果来校正解码图像信息。

6. 发明授权

US5991452A Image and code data compression apparatus 失效
标题翻译：图像和码数据压缩装置
公开(公告)号：US5991452A
公开(公告)日：1999-11-23
申请号：US889047
申请日：1997-07-07
申请人： Masayoshi Shimizu , Takashi Morihara , Tsugio Noda
发明人： Masayoshi Shimizu , Takashi Morihara , Tsugio Noda
IPC分类号： H04N1/41 , H04N1/415 , G06K9/36
CPC分类号： H04N19/18 , H04N19/132 , H04N19/14 , H04N19/149 , H04N19/176 , H04N19/60 , H04N19/13 , H04N19/146 , H04N19/91
摘要： In an image and code data compression apparatus for compressing the image data and further compressing the code data which are compressed from the image data, the apparatus includes: a dividing unit for receiving the image data and dividing them into a plurality of image data blocks; a transformation unit operatively connected to the dividing unit for performing an orthogonal transformation to the image data block and calculating transformation coefficients for every frequency component; a quantizing unit operatively connected to the transformation unit for quantizing the transformation coefficients which are calculated by the transformation unit by using a quantized threshold value which is set commonly to all image data, and calculating the quantized orthogonal transformation coefficients; a coding unit operatively connected to the quantizing unit for performing the variable length coding process for the quantized transformation coefficients which are calculated by the quantizing unit and outputting the code data which are compressed from the image data; a detecting unit operatively connected to at least one of above units for detecting the complexity of the image data block; and a deleting unit operatively connected to at least one of above units and the detecting unit for deleting the block image data having high complexity detected by the detecting unit.
摘要翻译：在用于压缩图像数据并进一步压缩从图像数据压缩的代码数据的图像和代码数据压缩装置中，该装置包括：分割单元，用于接收图像数据并将其分割成多个图像数据块; 变换单元，可操作地连接到分割单元，用于对图像数据块执行正交变换，并计算每个频率分量的变换系数; 量化单元，可操作地连接到所述变换单元，用于通过使用对所有图像数据共同设置的量化阈值来量化由所述变换单元计算的变换系数，以及计算所述量化的正交变换系数; 编码单元，可操作地连接到量化单元，用于对由量化单元计算的量化变换系数执行可变长度编码处理，并输出从图像数据压缩的代码数据; 检测单元，可操作地连接到上述单元中的至少一个，用于检测图像数据块的复杂度; 以及删除单元，其可操作地连接到上述单元中的至少一个单元，并且所述检测单元用于删除由所述检测单元检测到的具有高复杂度的块图像数据。

7. 发明授权

US5850259A Predictive coding apparatus 失效
标题翻译：预测编码装置
公开(公告)号：US5850259A
公开(公告)日：1998-12-15
申请号：US857488
申请日：1997-05-16
申请人： Kenji Sugiyama
发明人： Kenji Sugiyama
IPC分类号： H04N19/50 , G06T9/00 , H04N1/415 , H04N1/417 , H04N19/102 , H04N19/126 , H04N19/134 , H04N19/137 , H04N19/14 , H04N19/176 , H04N19/189 , H04N19/196 , H04N19/423 , H04N19/503 , H04N19/577 , H04N19/60 , H04N19/61 , H04N19/625 , H04N19/86 , H04N19/91 , H04N19/93 , H04N7/50
CPC分类号： H04N19/14 , H04N19/124 , H04N19/132 , H04N19/176 , H04N19/61 , H04N19/146 , H04N19/152
摘要： A predictive coding apparatus encodes an input video signal. A prediction error signal of the input video signal is generated by at least another video signal which is coded before or after the input video signal. The prediction error signal is translated into codes of a fixed length with a predetermined quantizing step width. Activity of the prediction error signal is detected and compared with a reference value which depends on the quantizing step width. The codes of the fixed length or predetermined codes of zero values are selected per pixel block in accordance with the comparison result, the selected codes being used as the coded other video signal. The selected codes are translated into codes of variable lengths which are outputted as a coded video signal. Detected instead of the activity may be the maximum value and the number of non-zero values per pixel block of the codes of the fixed length or the maximum value per pixel block and the sum of the maximum values in pixel blocks of the codes of the fixed length which are compared with different reference values.
摘要翻译：预测编码装置对输入视频信号进行编码。输入视频信号的预测误差信号由在输入视频信号之前或之后被编码的至少另一个视频信号产生。预测误差信号被转换成具有预定量化步长的固定长度的码。检测出预测误差信号的活动并将其与取决于量化步长的参考值进行比较。根据比较结果，每像素块选择固定长度的代码或零值的预定代码，所选择的代码被用作编码的其他视频信号。所选择的代码被转换为作为编码视频信号输出的可变长度的代码。检测而不是活动可以是固定长度的代码或每个像素块的最大值的每像素块的最大值和非零值的数量以及代码的像素块中的最大值的总和固定长度与不同的参考值进行比较。

8. 发明授权

US5838823A Video image compression and decompression 失效
标题翻译：视频图像压缩和解压缩
公开(公告)号：US5838823A
公开(公告)日：1998-11-17
申请号：US609867
申请日：1996-02-29
申请人： Laurent Ancessi
发明人： Laurent Ancessi
IPC分类号： G06T9/00 , H04N7/26 , H04N7/28 , H04N7/30 , H04N7/32 , H04N7/36 , G06K9/36 , H04N1/41 , H04N1/415
CPC分类号： G06T9/008 , H04N19/12 , H04N19/137 , H04N19/154 , H04N19/172 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/51 , H04N19/93 , H04N19/94 , H04N19/60
摘要： A video image compression and decompression system and method operates on frame blocks and uses multiple compression stages to select a best compression method for use with the associated block. The best compression method is selected by performing motion compensation compression on each block and assigning a quantitative image quality rating to the compressed block. During a second compression stage, the blocks having the lowest image quality ratings are selected and compressed using a vector quantization method which improves the quality of the block representation thereby improving the overall image quality. During each compression stage, compression dictionaries are built and dynamically updated. After the compression method is selected for each block, a compressed image frame is built.
摘要翻译：视频图像压缩和解压缩系统和方法对帧块进行操作，并且使用多个压缩级来选择与相关块一起使用的最佳压缩方法。通过对每个块执行运动补偿压缩并为压缩块分配定量图像质量等级来选择最佳压缩方法。在第二压缩阶段期间，使用矢量量化方法来选择和压缩具有最低图像质量等级的块，其提高了块表示的质量，从而提高了整体图像质量。在每个压缩阶段，压缩字典被构建并动态更新。在为每个块选择压缩方法之后，构建压缩图像帧。

9. 发明授权

US5832234A Encoding images using block-based macroblock-level statistics 失效
标题翻译：使用基于块的宏块级统计信息对图像进行编码
公开(公告)号：US5832234A
公开(公告)日：1998-11-03
申请号：US544468
申请日：1995-10-18
申请人： Vaughn Iverson , Thomas R. Gardos
发明人： Vaughn Iverson , Thomas R. Gardos
IPC分类号： G06T9/00 , H04N7/26 , H04N7/36 , H04N7/50 , H04N1/415
CPC分类号： H04N19/14 , H04N19/124 , H04N19/132 , H04N19/176 , H04N19/503 , H04N19/51 , H04N19/61 , H04N19/107 , H04N19/146 , H04N19/149 , H04N19/15
摘要： Block-level statistical measures are generated and then used to generate macroblock-level statistical measures, which are in turn used to determine how to encode the macroblocks of the image. In a preferred embodiment, a macroblock-level intra-SAD measure is generated by summing four block-level intra-SAD measures generated from the four blocks of the macroblock. The macroblock-level intra-SAD measure is then used to determine whether to encode the macroblock using intraframe encoding or interframe encoding. Basing macroblock-level statistics on block-level measures can provide a more accurate prediction as to how the macroblock would be encoded using intraframe encoding techniques.
摘要翻译：生成块级统计量度，然后用于生成宏块级统计量度，这些度量依次用于确定如何对图像的宏块进行编码。在优选实施例中，通过对从宏块的四个块生成的四个块级SAD测量求和来生成宏块级SAD内测量。然后使用宏块级的SAD内测量来确定是否使用帧内编码或帧间编码对宏块进行编码。关于块级测量的基于宏块级的统计信息可以提供关于如何使用帧内编码技术对宏块进行编码的更准确的预测。

10. 发明授权

US5777749A Method and device for compressing bit-map data 失效
标题翻译：用于压缩位图数据的方法和装置
公开(公告)号：US5777749A
公开(公告)日：1998-07-07
申请号：US802096
申请日：1997-02-19
申请人： Tsugio Noda , Kenichiro Sakai
发明人： Tsugio Noda , Kenichiro Sakai
IPC分类号： H04N1/411 , G06T9/00 , H03M7/46 , H04N1/415 , H04N1/419
CPC分类号： G06T9/00 , H04N1/415 , H04N1/419
摘要： The present invention relates to a bit-map compressing method and a bit-map compressing device. The bit-map data compressing method includes a main scanning step for scanning bit-map data in a main scanning direction; a first region separating step for separating a region including black pixels and a region including no black pixels in line unit; a secondary scanning step for scanning in a secondary direction perpendicular to the main scanning direction; a second region separating step for separating a region including black pixels and a region including no black pixels, in column unit; and an encoding step for encoding as an element each region obtained in the first region separating step and the second region separating step. Bit-map can be transferred by effectively performing data compression on simple algorithm, without using special hardware.
摘要翻译：位图压缩方法和位图压缩装置技术领域本发明涉及位图压缩方法和位图压缩装置。位图数据压缩方法包括：主扫描步骤，用于扫描主扫描方向的位图数据; 用于分离包括黑色像素的区域和不包括黑色像素的区域的第一区域分离步骤; 二次扫描步骤，用于沿与主扫描方向正交的次方向扫描; 用于分离包括黑色像素的区域和不包括黑色像素的区域的第二区域分离步骤; 以及编码步骤，用于编码在第一区域分离步骤和第二区域分离步骤中获得的每个区域的元素。可以通过在简单算法上有效执行数据压缩而不使用特殊硬件来传输位图。

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