-
1.发明授权Method for compressing digital documents with control of image quality subject to multiple compression rate constraints 有权用于压缩数字文档的方法，具有受到多个压缩率约束的图像质量的控制公开(公告)号：US06804401B2
公开(公告)日：2004-10-12
申请号：US09727733
申请日：2000-12-04
IPC分类号： G06K936
CPC分类号： G06T9/00 , H04N1/3333 , H04N1/41 , H04N2201/33357
摘要： A method for digital image compression of a raster image is disclosed which uses different compression methods for selected parts of the image and which dynamically adjusts compression and segmentation parameters to control tradeoff of image quality and compression. The image is encoded into a single data stream for efficient handling by disk, memory and I/O systems. This system provides a stable feedback loop that manages to a fine granularity (typically 8×8 pixel blocks) the compression of image data so as to be compliant with a plurality of compression constraints; the management of an incremental bias toward more aggressive compression that selectively applies the more aggressive compression methods to blocks that are the most tolerant with respect to visible artifacts; and the adjustable segmentation and compression parameters used to control the image compression.
摘要翻译： 公开了一种用于光栅图像的数字图像压缩的方法，其对图像的所选部分使用不同的压缩方法，并且其动态地调整压缩和分割参数以控制图像质量和压缩的权衡。 图像被编码成单个数据流，以便由磁盘，存储器和I / O系统进行有效的处理。 该系统提供稳定的反馈回路，其对图像数据的压缩进行精细粒度（通常为8×8像素块），以便符合多个压缩约束; 对更积极的压缩的增量偏倚的管理，其选择性地将更积极的压缩方法应用于对于可见伪像是最宽容的块; 以及用于控制图像压缩的可调分割和压缩参数。
-
公开(公告)号：US4153817A
公开(公告)日：1979-05-08
申请号：US855075
申请日：1977-11-25
申请人： Remo J. D'Ortenzio
发明人： Remo J. D'Ortenzio
摘要： A digital conference circuit provides greater stability in voice transmission by selectively inverting the signal in alternate conference channels, thereby providing cancellation of parasitic echo signals which tend to create oscillations or ringing. Selective gain control is also provided for conferences of different sizes and efficient use of conference lines is ensured by providing for selective combination of conference groups.
摘要翻译： {PG，1 A数字会议电路通过在备用会议通道中选择性地反相信号来提供语音传输的更大稳定性，从而提供倾向于产生振荡或振铃的寄生回波信号的消除。 还为不同规模的会议提供选择性增益控制，通过提供会议组的选择性组合来确保会议线路的有效使用。
-
公开(公告)号：US5825312A
公开(公告)日：1998-10-20
申请号：US758137
申请日：1996-11-25
申请人： Remo J. D'Ortenzio
发明人： Remo J. D'Ortenzio
CPC分类号： H03M7/425
摘要： A low cost, high speed, JPEG Huffman code decoder. The entire gamut of Huffman codes is partitioned into groups, with each group being associated with it's own small look up table to minimize the overall memory requirements. The current Huffman code is stored in a register. For the disclosed embodiment there are N=4 memories with sizes 128, 256, 128 and 256 elements respectively. For the specific typical Huffman code set cited, the partitioning is: The code words in the first group have 7 bits or less and are decoded in the first memory. The next group has from 5 to 7 leading ones, where the first five 1's are masked out and the remaining bits are used to address the second memory. The remaining codes have at least eight leading ones. Here, the first eight ones are masked out and the remaining bits are used to address the last memory. (In this example, one of the memories is not used). Finally, the first eight bits are used in a selector to enable the correct memory so that a single correct output data word is output. The disclosed N=4 embodiment is designed to handle any custom JPEG Huffman code set. This concept can be extended to other memory partitions (a N=6 example is cited) that might provide some desirable memory vs logic switching tradeoffs.
摘要翻译： 低成本，高速度的JPEG霍夫曼码解码器。 Huffman代码的整个区域被分成几组，每个组都与自己的小型查找表相关联，以最大限度地减少整体内存需求。 当前的霍夫曼代码存储在一个寄存器中。 对于所公开的实施例，分别具有大小128,256,128和256个元素的N = 4个存储器。 对于所引用的具体典型的霍夫曼代码集，划分是：第一组中的码字具有7位或更少，并且在第一存储器中被解码。 下一组有5到7个，其中前5个被屏蔽，其余的位用于寻址第二个存储器。 剩余的代码至少有八个主要代码。 这里，前八个被屏蔽，其余的位用于寻址最后的存储器。 （在该示例中，不使用其中一个存储器）。 最后，前8位用于选择器以启用正确的存储器，以便输出单个正确的输出数据字。 所公开的N = 4实施例被设计为处理任何定制的JPEG霍夫曼代码集。 这个概念可以扩展到可能提供一些期望的存储器与逻辑切换权衡的其他存储器分区（N = 6的例子）。
-
公开(公告)号：US4328426A
公开(公告)日：1982-05-04
申请号：US174777
申请日：1980-08-04
申请人： Remo J. D'Ortenzio
发明人： Remo J. D'Ortenzio
IPC分类号： H04N1/409 , G03G15/00 , G03G15/36 , G03G21/00 , G06K9/38 , G06T5/20 , H03H17/00 , H03H17/02 , H03H17/06 , H04N1/40 , H01J40/14
摘要： A separable two dimensional Finite Impulse Response (FIR) digital image processing filter with X-dimension filter section having a delay buffer series to which digitized image signals or pixels are first input. The buffer inputs and output are tapped and pixels tapped off are processed by preset multiplier factors and input to an adder where the processed pixels are summed. The summed pixels are fed to a line buffer series of a Y-dimension filter section, tapped off from the filter inputs and output, and processed by further preset multiplier factors. The processed pixels are input to a second adder and summed to provide filtered output pixels.In a second embodiment, the filter is symmetric and has a center point response of unity. In a third embodiment, the filter X and Y dimension filter sections are reversed.
摘要翻译： 具有X维滤波器部分的可分离二维有限脉冲响应（FIR）数字图像处理滤波器，其具有首先输入数字化图像信号或像素的延迟缓冲器系列。 缓冲器输入和输出被抽头，像素抽头被预设乘数因子处理，并输入到加法器，其中处理的像素相加。 相加的像素被馈送到Y滤波器部分的线缓冲器系列，从滤波器输入和输出分接，并通过进一步的预设乘数因子进行处理。 经处理的像素被输入到第二加法器并相加以提供滤波的输出像素。 在第二实施例中，滤波器是对称的并且具有一个中心点响应。 在第三实施例中，过滤器X和Y尺寸过滤器部分相反。
-
5.发明授权System and method for controlling compression ratio and image quality of binary images 有权控制二值图像压缩比和图像质量的系统和方法公开(公告)号：US07412099B2
公开(公告)日：2008-08-12
申请号：US10757344
申请日：2004-01-14
IPC分类号： G06K9/36
CPC分类号： H04N1/411
摘要： A method, system and computer-readable medium for achieving a target compression ratio for binary images with a minimum of image degradation. Portions of the binary image are strategically replicated and used to replace adjacent portions of the image. This process is continued until a compressed version of the image data satisfies a target compression ratio.
摘要翻译： 一种用于实现具有最小图像劣化的二进制图像的目标压缩比的方法，系统和计算机可读介质。 战略性地复制二进制图像的一部分并用于替换图像的相邻部分。 继续该过程直到图像数据的压缩版本满足目标压缩比。
-
6.发明授权公开(公告)号：US07218784B1
公开(公告)日：2007-05-15
申请号：US09562143
申请日：2000-05-01
IPC分类号： G06K9/36
CPC分类号： H04N1/41 , H04N19/12 , H04N19/126 , H04N19/14 , H04N19/176 , H04N19/60
摘要： This invention relates to a method and apparatus for controlling image quality and compression ratios in image segmentation. More particularly, the invention is directed to an image segmenting system and method that analyzes and classifies pixel blocks of an image to determine the manner in which the image block should be compressed, e.g. with a lossy or a lossless technique. This approach, which assumes no apriori knowledge of the any specific region of the image, results in effective use of the various known compression techniques and provides improved overall compression ratios and image quality.
摘要翻译： 本发明涉及一种用于控制图像分割中的图像质量和压缩比的方法和装置。 更具体地，本发明涉及一种图像分割系统和方法，其分析和分类图像的像素块以确定图像块应被压缩的方式，例如， 有损或无损技术。 这种不考虑图像的任何特定区域的先验知识的方法导致有效地利用各种已知的压缩技术，并提供改进的总体压缩比和图像质量。
-
公开(公告)号：US4520455A
公开(公告)日：1985-05-28
申请号：US613484
申请日：1984-05-24
CPC分类号： G06K15/10 , G06K15/128 , G06K2215/008
摘要： In a digital printer, method and apparatus for formatting printer control signals. According to the invention, characters to be printed are stored in ASCII format in the memory of a microprocessor system. Successive characters are formatted into an on/off bit mapping where a bit signal corresponds to a blank region and a bit signal corresponds to a darkened region. Eight bit slices of the characters are formatted until an entire print width is completed and stored in an 8 bit.times.N buffer where N varies with the desired printer resolution. In the preferred embodiment two buffers are used so that while the contents of one buffer are used to control the printer the second buffer can be bit formatted under microprocessor control.
摘要翻译： 在数字打印机中，用于格式化打印机控制信号的方法和装置。 根据本发明，要打印的字符以ASCII格式存储在微处理器系统的存储器中。 连续字符被格式化为开/关位映射，其中位信号对应于空白区域，位信号对应于较暗区域。 字符的八位片段被格式化，直到整个打印宽度完成并存储在8位x N缓冲区中，其中N随所需的打印机分辨率而变化。 在优选实施例中，使用两个缓冲器，使得当使用一个缓冲器的内容来控制打印机时，可以在微处理器控制下对第二缓冲器进行位格式化。
-
公开(公告)号：US4476542A
公开(公告)日：1984-10-09
申请号：US376884
申请日：1982-05-10
CPC分类号： G06K15/128 , G06K15/10 , G06K2215/008
摘要： In a digital printer, method and apparatus for formatting printer control signals. According to the invention, characters to be printed are stored in ASCII format in the memory of a microprocessor system. Successive characters are formatted into an on/off bit mapping where a bit signal corresponds to a blank region and a bit signal corresponds to a darkened region. Eight bit slices of the characters are formatted until an entire print width is completed and stored in an 8 bit.times.N buffer where N varies with the desired printer resolution. In the preferred embodiment two buffers are used so that while the contents of one buffer are used to control the printer the second buffer can be bit formatted under microprocessor control.
摘要翻译： 在数字打印机中，用于格式化打印机控制信号的方法和装置。 根据本发明，要打印的字符以ASCII格式存储在微处理器系统的存储器中。 连续字符被格式化为开/关位映射，其中位信号对应于空白区域，位信号对应于较暗区域。 字符的八位片段被格式化，直到整个打印宽度完成并存储在8位x N缓冲区中，其中N随所需的打印机分辨率而变化。 在优选实施例中，使用两个缓冲器，使得当使用一个缓冲器的内容来控制打印机时，可以在微处理器控制下对第二缓冲器进行位格式化。
-
9.发明授权Comparison circuit for removing possibly false signals from a digital bit stream 失效用于从数字位流中去除可能的假信号的比较电路
公开(公告)号：US4044312A
公开(公告)日：1977-08-23
申请号：US745442
申请日：1976-11-26
申请人： Remo J. D'Ortenzio
发明人： Remo J. D'Ortenzio
CPC分类号： H03K3/013
摘要： A circuit for eliminating possibly false signals such as those due to contact bounce in electromechanical devices from a stream of digital pulses that represent the instantaneous states of selected conditions at successive intervals. The circuit includes a majority logic detector, two stores, one for storing the input signals, and one for storing the output of the majority logic detector, and means for feeding the input signals and the outputs of the two stores to respective inputs of the detector for comparison.
摘要翻译： 用于消除可能的假信号的电路，例如由于在机电装置中从连续间隔的所选条件的瞬时状态的数字脉冲流中的接触反弹引起的那些信号。 电路包括多数逻辑检测器，两个存储器，一个用于存储输入信号，一个用于存储多数逻辑检测器的输出;以及用于将输入信号和两个存储器的输出馈送到检测器的相应输入端的装置 作比较。
-
-
-
-
-
-
-
-
搜索结果
9 条记录 (耗时 0.013 秒)
