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21. 发明授权

US5303313A Method and apparatus for compression of images 失效
标题翻译：用于图像压缩的方法和装置
公开(公告)号：US5303313A
公开(公告)日：1994-04-12
申请号：US808539
申请日：1991-12-16
申请人： Peter B. Mark , Stuart M. Shieber
发明人： Peter B. Mark , Stuart M. Shieber
IPC分类号： G06T9/00 , H03M7/46 , H04N1/411 , G06K9/36 , G06K9/46
CPC分类号： G06T9/005 , H04N1/4115
摘要： An image compression method based on symbol matching is disclosed. Precompression of the image is performed prior to symbol matching to improve efficiency. A voting scheme is used in conjunction with a plurality of novel similarity tests to improve symbol matching accuracy. A template composition scheme achieves image enhancement. Other disclosed features provide further advantages. Apparatus for implementing the image compression method for image transmission, storage, and enhancement are included.
摘要翻译：公开了一种基于符号匹配的图像压缩方法。在符号匹配之前执行图像的预压以提高效率。结合多个新的相似性测试来使用投票方案来提高符号匹配精度。模板组合方案实现图像增强。其他公开的特征提供了进一步的优点。包括用于实现用于图像传输，存储和增强的图像压缩方法的装置。

22. 发明授权

US5262878A Method and apparatus for compressing digital still picture signals 失效
标题翻译：用于压缩数字静态图像信号的方法和装置
公开(公告)号：US5262878A
公开(公告)日：1993-11-16
申请号：US714882
申请日：1991-06-14
申请人： James N. Esserman
发明人： James N. Esserman
IPC分类号： G06T9/00 , H04N1/411 , H04N7/30 , H04N7/36 , H04N7/50 , H04N1/387
CPC分类号： H04N1/4115 , G06T9/008 , H04N19/107 , H04N19/15 , H04N19/176 , H04N19/51 , H04N19/60 , H04N19/61 , H04N19/146
摘要： Digital still picture signals are processed for compression. A picture signal is divided into successive blocks containing data corresponding to different portions of a still picture. A selected block for the still picture is compared to an area of the picture defined by a plurality of previous blocks to try to locate a set of data in the area that is similar to the selected block. An error signal is generated that indicates the difference between the selected block and the best fit block of previously received data for the picture. Both the error signal and the current block are compressed. The amount of data in the compressed error signal is compared to the amount of data in the compressed current block to determine which provides the least amount of data for communication to a data receiver. An offset vector is appended to each selected error signal to identify the portion of the previously received picture data in which the corresponding best fit block resides. A data receiver recovers the digital still picture data by applying the offset vector for each received compressed error signal to a previously received area of the still picture data to recover the best fit block required to recreate the current data set from the received error signal.
摘要翻译：处理数字静态图像信号进行压缩。图像信号被分成包含对应于静止图像的不同部分的数据的连续块。将用于静止图像的所选块与由多个先前块定义的图像的区域进行比较，以尝试在与所选块相似的区域中定位一组数据。产生指示所选块与先前接收的图像的最佳拟合块之间的差异的误差信号。错误信号和当前块均被压缩。将压缩误差信号中的数据量与压缩当前块中的数据量进行比较，以确定哪个数据提供数据到数据接收器的通信数据量最少。偏移矢量被附加到每个选择的误差信号，以识别先前接收到的相应最佳拟合块所在的图像数据的部分。数据接收器通过将每个接收到的压缩误差信号的偏移矢量应用于先前接收到的静止图像数据的区域来恢复数字静止图像数据，以恢复从接收到的误差信号重新创建当前数据集所需的最佳拟合块。

23. 发明授权

US5191438A Facsimile device with skew correction and text line direction detection 失效
标题翻译：具有钻孔校正和文字线方向检测的FACSIMILE设备
公开(公告)号：US5191438A
公开(公告)日：1993-03-02
申请号：US625055
申请日：1990-12-10
申请人： Morihiro Katsurada , Sadaaki Shimonaga
发明人： Morihiro Katsurada , Sadaaki Shimonaga
IPC分类号： G06K9/32 , H04N1/387 , H04N1/411
CPC分类号： G06K9/3283 , H04N1/3878 , H04N1/411 , G06K2209/01
摘要： Disclosed is a facsimile device enabling data transmission in high efficiency independently of the direction in which an original is drawn into the facsimile device. The facsimile device includes a scanner for reading the original, an image memory for storing a read image signal, a circuit for detecting the direction of text lines of a read pixel signal, a circuit for determining whether or not the text line direction is close to a longitudinal direction or a lateral direction of arrangement of memory cells in the image memory, a circuit for executing an operation for rotating the image signal by a predetermined angle when a determination is made that the text line direction is closer to the longitudinal direction, a compression circuit for reading the rotated image signal in the lateral direction of the arrangement of the memory cells, to compress the read image signal, and a transmission circuit for transmitting the compressed signal onto lines.

24. 发明授权

US5109438A Data compression system and method 失效
标题翻译：数据压缩系统和方法
公开(公告)号：US5109438A
公开(公告)日：1992-04-28
申请号：US514778
申请日：1990-04-25
申请人： James F. Alves , Jerry A. Burman
发明人： James F. Alves , Jerry A. Burman
IPC分类号： H04N7/30 , G06T7/60 , G06T9/00 , H03M7/30 , H04N1/41 , H04N1/411
CPC分类号： H04N1/411 , G06T9/001
摘要： Image data compression is implemented by partitioning an image into relatively small blocks of pixels, matching each block to an orthogonal icon, and extracting attributes associated with the icon. A table of these orthogonal icons and attributes represents a data compressed image. Each block is processed separately from all other blocks. Orthogonal processing is used to preserve orthogonal features while attenuating non-orthogonal features. An optimum set of orthogonal icons and an optimum set of attributes for each icon further improves data compression and fidelity. The optimal set of orthogonal icons includes a flat icon, an edge icon, a ribbon icon, a corner icon, and a spot icon. An optimal set of attributes includes average intensities, intensity transition position and separation, and angle of the principal axes.

25. 发明授权

US5031053A Efficient encoding/decoding in the decomposition and recomposition of a high resolution image utilizing pixel clusters 失效
标题翻译：在利用像素簇的高分辨率图像的分解和重组中进行有效的编码/解码
公开(公告)号：US5031053A
公开(公告)日：1991-07-09
申请号：US359910
申请日：1989-06-01
申请人： Christodoulos Chamzas , Donald L. Duttweiler
发明人： Christodoulos Chamzas , Donald L. Duttweiler
IPC分类号： H04N1/41 , G06T3/40 , H03M7/30 , H04N1/411 , H04N1/417 , H04N7/26
CPC分类号： G06T3/40 , H04N1/4172 , H04N19/63
摘要： More efficent encoding/decoding in decomposing and recomposing a high resolution image is obtained by employing a unique pixel cluster arrangement. The pixel clusters of an image are classified as one of a plurality of classifications. A unique encoding/decoding technique is assigned to each classification. In one embodiment, a cluster including at least one high resolution pixel to be recomposed from a corresponding low resolution pixel which is a so-called exception to general prediction rules is classified as a first classification. A cluster including no pixels which are exceptions is classified as a second classification. Supplemental information is encoded/decoded for all pixels in a cluster classified as the first classification. Pixels in the cluster classified as the second classification are encoded/decoded according to the general prediction rules.

26. 发明授权

US4899394A Apparatus and method for image compression 失效
标题翻译：图像压缩的装置和方法
公开(公告)号：US4899394A
公开(公告)日：1990-02-06
申请号：US861510
申请日：1986-05-09
申请人： Jeffery H. Lee
发明人： Jeffery H. Lee
IPC分类号： G06T9/00 , H04N1/40 , H04N1/411 , H04N1/413
CPC分类号： H04N1/413 , G06T9/00 , H04N1/40062 , H04N1/411
摘要： A system for compressing the digitized images of documents so that they take up less memory space. The system is comprised of discrimination logic which scans the uncompressed image vertically in a swath through the middle of the raster lines and collects data regarding the raster lines which have a number of black pixels which exceed a user defined threshold. Interrupts are generated to cause a microprocessor to collect the data and write a vertical profile of the document. The microprocessor then causes the discrimination logic to scan unsuspected text lines horizontally and collect data regarding the columns which have a number of black pixels which exceed a user defined threshold. Interrupts are generated to cause the microprocessor to collect the data and write a horizontal document profile. After the profiling stage, the microprocessor examines the profiles and determines the zones wherein the blank spaces are integer multiples of the smallest blank spaces and labels these zones as text. The microprocessor then identifies these text zones to a compression engine which deletes every other pixel on each line and deletes every other line in text zones.
摘要翻译：用于压缩文档的数字化图像以便它们占用更少的存储空间的系统。该系统由识别逻辑组成，该鉴别逻辑通过栅格线的中间沿着条带垂直扫描未压缩图像，并且收集关于具有超过用户定义阈值的黑色像素数量的光栅线的数据。生成中断以使微处理器收集数据并写入文档的垂直配置文件。然后微处理器使鉴别逻辑水平地扫描未预期的文本行并且收集关于具有超过用户定义阈值的多个黑色像素的列的数据。生成中断以使微处理器收集数据并写入一个水平的文档配置文件。在分析阶段之后，微处理器检查轮廓并确定其中空格是最小空格的整数倍的区域，并将这些区域标记为文本。然后，微处理器将这些文本区域识别到压缩引擎，该压缩引擎删除每行上的每个其他像素，并删除文本区域中的每隔一行。

27. 发明授权

US4894713A Method of coding video signals 失效
标题翻译：视频信号编码方法
公开(公告)号：US4894713A
公开(公告)日：1990-01-16
申请号：US200933
申请日：1988-06-01
申请人： Paul Delogne , Benoit Macq , Luc Vandendorpe
发明人： Paul Delogne , Benoit Macq , Luc Vandendorpe
IPC分类号： H04N1/411 , G06T9/00 , H04N1/415 , H04N19/126 , H04N19/61
CPC分类号： H04N19/126 , H04N19/619 , H04N19/124 , H04N19/60
摘要： In a method in which the data related to the image are read in successive blocks, then subjected to orthogonal transformation, the coefficients of the transform obtained being quantized and analyzed according to a certain order and applied in the form of binary signals to a redundancy reducing coder, the signals representing the coefficients of the transform are stored in a memory organized in several blocks, and the contents of said memory are analyzed such that the signals applied to the redundancy reducing coder comprise sets of signals of coefficients taken from a group of blocks, the signals of each coefficient in each set being taken from a separate block belonging to said group of blocks.
摘要翻译：在与图像相关的数据在连续的块中读取的方法中，进行正交变换，获得的变换的系数按照一定的顺序进行量化和分析，并以二进制信号的形式被应用于冗余减少表示变换系数的信号被存储在组织在几个块中的存储器中，并且分析所述存储器的内容，使得施加到冗余度减少编码器的信号包括从一组块取得的系数信号集合每组中的每个系数的信号取自属于所述组块的单独块。

28. 发明授权

US4873577A Edge decomposition for the transmission of high resolution facsimile images 失效
标题翻译：用于传输高分辨率传真图像的边缘分解
公开(公告)号：US4873577A
公开(公告)日：1989-10-10
申请号：US146917
申请日：1988-01-22
申请人： Christodoulos Chamzas
发明人： Christodoulos Chamzas
IPC分类号： H04N1/387 , H04N1/411 , H04N1/415
CPC分类号： H04N1/415
摘要： A high resolution image is decomposed into a low resolution replica and into corresponding supplemental information for facsimile transmission to a remote location. The low resolution replica is generated by replacing a super pixel (picture element) including a plurality of high resolution image pixels with a single low resolution pixel and corresponding supplemental information, if any is required. The pixels of the low resolution replica are chosen such that all supplemental information required to convert the low resolution replica back to the original high resolution image is located at the "edges " of the low resolution replica. Thus, if a low resolution pixel is at an edge in the low resolution pixel is at an edge in the low resolution replica, supplemental information is generated in accordance with prescribed criteria. In a remote receiver, the decomposition is reversed and the original high resolution image is recomposed by substituting the transmitted supplemental information, if any, for the corresponding low resolution pixels located at the edges of the low resolution replica.

29. 发明授权

US4829385A Data communication apparatus 失效
标题翻译：数据通信装置
公开(公告)号：US4829385A
公开(公告)日：1989-05-09
申请号：US914652
申请日：1986-10-02
申请人： Katsuhito Takezawa
发明人： Katsuhito Takezawa
IPC分类号： H04N1/411 , H03M7/46 , H04N1/413 , H04N1/415
CPC分类号： H04N1/413 , H03M7/46
摘要： A data communication apparatus transmits data in divided blocks, and attaches a particular code to an overlapping data block, thereby reducing the time required for transmission.
摘要翻译：数据通信装置在分割块中发送数据，并将特定码附加到重叠数据块，从而减少发送所需的时间。

30. 发明授权

US4747104A Data transmission system employing a combination of block encoding and convolution encoding for error protection 失效
标题翻译：数据传输系统采用块编码和卷积编码的组合来进行错误保护
公开(公告)号：US4747104A
公开(公告)日：1988-05-24
申请号：US871013
申请日：1986-06-05
申请人： Philippe M. O. A. Piret
发明人： Philippe M. O. A. Piret
IPC分类号： H04N1/40 , H03M13/23 , H03M13/35 , H04L1/00 , H04N1/41 , H04N1/411 , G06F11/10
CPC分类号： H03M13/35 , H03M13/23
摘要： A data transmission system for providing error protection of transmitted data words. The less significant bits of a data word are, by means of matrix multiplication, encoded into a first redundant proto-code word and the more significant bits are, by means of further matrix multiplication and delay by different word recurrence intervals encoded in a set of further redundant proto-code words. A composite of the proto-code word is formed by means of a modulo-2-addition of code words, so that for the less significant data bits a block code is realized, while for the more significant data bits a convolutional encoding is realized. In the decoding, the more significant bits of the composite code word are decoded by means of Viterbi decoding, the Viterbi metric being determined from the deviation between the reconstructed contribution of the less significant bits to such code word and the actually received contribution of such bits to such code word.
摘要翻译：一种用于提供传输数据字的错误保护的数据传输系统。数据字的较低有效位通过矩阵乘法被编码为第一冗余原码字，并且更高有效位通过进一步的矩阵乘法和延迟由不同的字重复间隔编码在一组进一步冗余的原码字。原码字的组合通过码字的模2加法形成，使得对于较不重要的数据位，实现块码，而对于更重要的数据位，实现卷积编码。在解码中，通过维特比解码对复合码字的更高有效比特进行解码，维特比度量是根据较低有效位与这种码字的重构贡献与实际接收到的这些位的贡献之间的偏差来确定的到这样的代码字。

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