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1.发明授权
公开(公告)号：US5402146A
公开(公告)日：1995-03-28
申请号：US965579
申请日：1992-10-23
CPC分类号： H04N19/00 , H04N19/115 , H04N19/154 , H04N19/17 , H04N19/192 , H04N19/61 , H04N19/86 , H04N5/9261 , H04N19/146 , H04N19/30 , H04N19/60
摘要： Systems and methods that enable digital video compression techniques to manage and control artifact presence in each compressed frame of the video clip. Wherein specific embodiments are applicable to interframe and intraframe video compression methods and can be used in the compression of digital images and digital video clips. Other embodiments are employable in digital video compression and are applicable to interframe compression methods. A mechanism to increase the amount of video compression, while maintaining video quality that may otherwise be sacrificed with such increases in video compression, by threshold value management to accommodate the human eye's ability to more readily discern local image features or artifacts at central image locations or focused-upon areas, while tolerating, to a greater extent, artifacts dispersed elsewhere in the image.
摘要翻译： 允许数字视频压缩技术管理和控制视频剪辑的每个压缩帧中的伪像存在的系统和方法。 其中特定的实施例可应用于帧间和帧内视频压缩方法，并可用于数字图像和数字视频剪辑的压缩。 其他实施例可用于数字视频压缩，并且可应用于帧间压缩方法。 通过阈值管理来增加视频压缩量的机制，同时保持视频质量可能会随着视频压缩的这种增加而被牺牲，以适应人眼更容易辨别中心图像位置处的局部图像特征或伪像的能力，或者 同时容忍在更大程度上分散在图像中的其他地方的文物。
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2.发明授权System and method of measuring fidelity of decompressed video signals and images 失效测量解压缩视频信号和图像保真度的系统和方法
公开(公告)号：US5329379A
公开(公告)日：1994-07-12
申请号：US965649
申请日：1992-10-22
CPC分类号： H04N17/02 , H04N19/00 , H04N19/154 , H04N19/60
摘要： A method of quantitatively measuring fidelity of a reproduced image reconstructed from a compressed data representation of an original image is disclosed. The method comprises, responsive to user selection, for establishing a global assessment mode or a local assessment mode. In the global assessment mode changes in luminance of the reproduced image from the original image and changes in color in first and second color difference values of the reproduced image from the original image are used score fidelity. Changes in luminance are measured using a dynamic range, nonlinear transform equation. In the local assessment mode, and responsive to user selection, the reproduced image and the original image are segmented and corresponding pairs of segments from the reproduced image and the original image are identified. Scoring of fidelity of the reproduced image to the original image is done by comparing corresponding pairs of segments in color, luminance, shape, displacement and texture.
摘要翻译： 公开了一种定量测量从原始图像的压缩数据表示重建的再现图像的保真度的方法。 该方法包括响应于用户选择，用于建立全局评估模式或本地评估模式。 在全局评估模式中，使用得分保真度，来自原始图像的再现图像的亮度变化和来自原始图像的再现图像的第一和第二色差值中的颜色变化。 使用动态范围，非线性变换方程测量亮度变化。 在本地评估模式中，并且响应于用户选择，再现图像和原始图像被分割，并且识别来自再现图像和原始图像的对应的一对片段。 通过比较对应的颜色，亮度，形状，位移和纹理段对来完成对原始图像的保真度的评估。
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3.发明授权Method of converting luminance-color difference video signal to a three color component video signal 失效将亮度色差视频信号转换为三色分量视频信号的方法
公开(公告)号：US5262847A
公开(公告)日：1993-11-16
申请号：US963874
申请日：1992-10-20
摘要： A method of converting a digital video signal having a luminance component for each pixel of a frame and two color difference components for contiguous groups of pixels in the frame into a video signal having three color components for each pixel is disclosed. Two color lookup tables are provided, each being indexed by a combination of the luminance level for a pixel and a color difference component for the group including the pixel. Entries in each color lookup table include a component value for one color and a subcomponent contributing to a component value for another color. The method provides combining the luminance components and color difference components for each pixel represented in the compressed digital video signal to retrieve the color component values for the three color video signal. Two colors are extracted directly from the lookup tables. The third color component is generated by combining subcomponent values extracted from the tables.
摘要翻译： 公开了一种将具有帧的每个像素的亮度分量和用于帧中的连续的像素组的两个色差分量的数字视频信号转换成具有每个像素的三个颜色分量的视频信号的方法。 提供两个颜色查找表，每个颜色查找表通过像素的亮度级和包括像素的组的色差分量的组合来索引。 每个颜色查找表中的条目包括一种颜色的组件值和对另一种颜色的组件值作出贡献的子组件。 该方法提供对压缩数字视频信号中表示的每个像素的亮度分量和色差分量组合以检索三色视频信号的颜色分量值。 直接从查找表中提取两种颜色。 通过组合从表中提取的子组件值来生成第三个颜色组件。
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4.发明授权System and method for frame-differencing video compression/decompression using perceptually-constant information and image analysis 失效使用感知常数信息和图像分析进行帧差分视频压缩/解压缩的系统和方法
公开(公告)号：US5353061A
公开(公告)日：1994-10-04
申请号：US958423
申请日：1992-10-08
CPC分类号： H04N9/8045 , H04N19/503 , H04N5/781 , H04N5/85
摘要： A frame-differencing based method for coding and decoding color video data suitable for real-time, software-only based decompression and playback in low-end personal computers wherein the computational demands required of a computer microprocessor to implement the method are readily met by microprocessors such as an Intel 80386SX microprocessor running at 16 Mhz. Frame-to-frame differences are detected in a manner analogous to human perception of luminance data, rather than by the differences in the actual numerical video data. This permits greater compression of data without added computational complexity to the decompression process. Image analysis techniques are employed to ameliorate the appearance of the video. A lossless coding method that unifies two separate compressed data entities is used to obtain a greater amount of compression and simultaneously to reduce the computational complexity of the decompression process.
摘要翻译： 一种基于帧差分的方法，用于编码和解码适合于在低端个人计算机中实时，基于软件的解压缩和重放的彩色视频数据，其中计算机微处理器实现该方法所需的计算需求容易由微处理器 例如运行在16 Mhz的Intel 80386SX微处理器。 以类似于人类对亮度数据的感知的方式而不是通过实际数字视频数据的差异来检测帧到帧的差异。 这允许更大量的数据压缩，而不会增加解压缩过程的计算复杂度。 采用图像分析技术来改善视频的外观。 使用统一两个分离的压缩数据实体的无损编码方法来获得更大量的压缩并同时降低解压缩过程的计算复杂度。
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5.发明授权System and method for frame-differencing based video compression/decompression with forward and reverse playback capability 失效用于基于帧差分的视频压缩/解压缩的前向和反向播放能力的系统和方法
公开(公告)号：US5298992A
公开(公告)日：1994-03-29
申请号：US958403
申请日：1992-10-08
CPC分类号： H04N5/9262 , H04N19/00 , H04N19/503 , H04N19/577 , H04N5/781 , H04N5/783 , H04N5/85
摘要： A process for coding a plurality of compressed video data streams in a time ordered sequence. Each compressed data stream includes coding of frame to frame differences of a video segment, which are represented as a compressed M.times.N exclusive-OR plane of pixel change values and location displacement control values for an output pointer into a decompressed video frame. By coding frame to frame differences in an exclusive-OR values, the replay process is made bidirectional, allowing for both forward and reverse playback of the video segment.
摘要翻译： 一种用于以时间有序序列对多个压缩视频数据流进行编码的过程。 每个压缩数据流包括视频片段的差分编码，其被表示为像素改变值的压缩M * N异或平面和用于输出指针到解压缩视频帧中的位置控制值。 通过对异或值的帧到帧进行编码，重播过程是双向的，允许视频段的正向和反向重放。
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6.发明授权System and method for frame differencing video compression and decompression with frame rate scalability 失效用于帧差分视频压缩和解压缩与帧率可扩展性的系统和方法
公开(公告)号：US5384598A
公开(公告)日：1995-01-24
申请号：US963791
申请日：1992-10-20
申请人： Arturo A. Rodriguez , Charles T. Rutherfoord , Steven M. Hancock , Robert F. Kantner, Jr. , Mark A. Pietras
发明人： Arturo A. Rodriguez , Charles T. Rutherfoord , Steven M. Hancock , Robert F. Kantner, Jr. , Mark A. Pietras
CPC分类号： H04N19/503 , H04N19/587
摘要： A system and method of compressing original video data expressed in a plurality of digitally coded frames which enable decompression and playback of resulting compressed video data at one of a plurality of frame rates while maintaining temporal fidelity of the frames displayed. Compression includes selecting a plurality of rate streams for the compressed video data, including a highest rate stream including all of the frames of the original video data and a lowest rate stream including a subset of regularly spaced frames of the original video data. Then the initial frame in the original video data is spatially compressed and the resulting compressed data placed in the compressed video data. The initial frame is also saved as a base frame for all rate streams for subsequent temporal compression of the original video data. As frames are retrieved from the original video data in sequence, temporal compression based on frame differencing techniques between the retrieved frame and the base is carried out, with difference frames being stored to the compressed video data. Each difference frame is placed in the resulting compressed video data for later decompression and reproduction.
摘要翻译： 一种压缩以多个数字编码的帧表示的原始视频数据的系统和方法，其能够以多个帧速率之一解压缩和重放所生成的压缩视频数据，同时保持显示的帧的时间保真度。 压缩包括为压缩视频数据选择多个速率流，包括包括原始视频数据的所有帧的最高速率流和包括原始视频数据的规则间隔帧的子集的最低速率流。 然后原始视频数据中的初始帧被空间压缩，并将得到的压缩数据放置在压缩视频数据中。 初始帧也被保存为用于所有速率流的基本帧，用于原始视频数据的后续时间压缩。 由于依次从原始视频数据中检索帧，所以执行基于检索到的帧和基站之间的帧差分技术的时间压缩，其中差分帧被存储到压缩视频数据。 每个差分帧被放置在所得到的压缩视频数据中，用于随后的解压缩和再现。
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7.发明授权System and method for pattern-matching with error control for image and video compression 失效用于图像和视频压缩的错误控制的模式匹配的系统和方法
公开(公告)号：US5463701A
公开(公告)日：1995-10-31
申请号：US183109
申请日：1994-01-18
申请人： Robert F. Kantner, Jr. , Vaughn S. Iverson , Kenneth Morse , Mark A. Pietras , Arturo A. Rodriguez
发明人： Robert F. Kantner, Jr. , Vaughn S. Iverson , Kenneth Morse , Mark A. Pietras , Arturo A. Rodriguez
摘要： Disclosed is a system and a method for compressing digitized color video data by generating codes into a pattern of tables for regions in frames of the video data exhibiting certain patterns. An image frame in a video data stream has a plurality of pixels assigned digitized color and luminance data. The image frame is divided into a plurality of non-overlapping elementary units, with each elementary unit comprising a plurality of pixels. For elementary units exhibiting change from the prior frame in time, elementary units having pixels with differing digitized color and luminance data are selected for pattern matching. Each pixel of an elementary unit selected for pattern matching is mapped to a pattern value. A pattern value is the same for all pixels sharing the same color and luminance data in an elementary unit. The pattern values are then grouped based on relative position in the elementary unit into offsets into associated sets of pattern match tables and error condition tables. The pattern match tables and error condition tables all relate to a single table of patterns. Entries from the offsets into each associated set of pattern match and error condition tables are then accumulated to generate indicia of pattern matches. The indicia are then compared to select a pattern which best matches the elementary unit within a preselected error tolerance. An offset into a table of patterns for the matched pattern is then generated to provide the desired code.
摘要翻译： 公开了一种系统和方法，用于通过将视频数据的帧中的区域的码型生成代码来压缩数字化的彩色视频数据，该数据表示某些模式。 视频数据流中的图像帧具有分配数字化的彩色和亮度数据的多个像素。 图像帧被分成多个不重叠的基本单元，其中每个基本单元包括多个像素。 对于表现出从先前帧的变化的基本单元，选择具有不同数字化颜色和亮度数据的像素的基本单元用于模式匹配。 为模式匹配选择的基本单元的每个像素被映射到模式值。 对于在基本单元中共享相同颜色和亮度数据的所有像素，图案值是相同的。 然后将模式值基于基本单元中的相对位置分组为偏移到相关联的模式匹配表和错误条件表中。 模式匹配表和错误条件表都与单个模式表相关。 然后累积从偏移到每个相关联的模式匹配集合和错误条件表的条目以产生模式匹配的标记。 然后将标记进行比较以选择在预先选择的误差容限内与基本单元最匹配的图案。 然后生成用于匹配模式的图形的偏移量以提供所需的代码。
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8.发明授权Data processing method and apparatus for converting color image data to non-linear palette 失效用于将彩色图像数据转换成非线性调色板的数据处理方法和装置
公开(公告)号：US5412766A
公开(公告)日：1995-05-02
申请号：US964236
申请日：1992-10-21
摘要： A personal computer system has source of input video data containing digitized pixel color values, and a display operated with palette quantized colors including non-linear palette quantized colors. A conversion table is stored in the system for converting blocks of pixel color values into palette colors, the conversion table comprising a plurality of error diffusion arrays covering the color range of pixel color values. Each array in the conversion table corresponds to a different color value, each array being accessed using said corresponding color value as an index into said table. Each array in the table has "n" fields respectively containing palette color values ordered in accordance with an order matrix by sorted luminance values.
摘要翻译： 个人计算机系统具有包含数字化像素颜色值的输入视频数据源，以及具有调色板量化颜色的显示器，包括非线性调色板量化颜色。 转换表存储在系统中，用于将像素颜色值的块转换为调色板颜色，转换表包括覆盖像素颜色值的颜色范围的多个误差扩散阵列。 转换表中的每个数组对应于不同的颜色值，使用所述对应的颜色值作为索引访问每个数组。 表格中的每个数组都有“n”个字段，分别包含按排序亮度值按顺序矩阵排序的调色板颜色值。
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9.发明授权Method and apparatus for improved compression and recording of color video data in a personal computer using a plurality of lookup tables 失效用于使用多个查找表在个人计算机中改进压缩和记录彩色视频数据的方法和装置
公开(公告)号：US5319793A
公开(公告)日：1994-06-07
申请号：US964675
申请日：1992-10-21
IPC分类号： G06T9/00 , H04N1/41 , H04N5/781 , H04N7/26 , H04N7/36 , H04N9/804 , H04N9/808 , G06F13/00 , G06F3/00
CPC分类号： H04N9/8045 , H04N19/507 , H04N19/96 , H04N19/98 , H04N5/781
摘要： A personal computer system is operated to concurrently execute threads of multitasking operations to capture motion video data from a video source, compress such data, and record the compressed data in a file. Compression is selectively done in either one of two modes, an inter-frame compression mode and a intra-frame compression mode, both modes being block-oriented. During intra-frame compression, homogenous blocks are used to represent four pixel values with a single pixel value when the four pixels in a block are perceptually similar. During inter-frame compression, unchanged blocks are used to represent four pixel values as unchanged from the preceding frame when the four pixels are perceptually similar to the same four pixels in the preceding frame. Additionally, inter-frame compressed video frames use homogenous blocks to represent four pixel values with a single pixel when the four pixel values in a block are perceptually similar to each other but are perceptually different from the same four pixels in the previous frame.
摘要翻译： 操作个人计算机系统以同时执行多任务操作的线程以从视频源捕获运动视频数据，压缩这些数据，并将压缩数据记录在文件中。 压缩选择性地以两种模式之一，即帧间压缩模式和帧内压缩模式，这两种模式都是面向块的。 在帧内压缩期间，当块中的四个像素在感知上相似时，使用均匀块来表示具有单个像素值的四个像素值。 在帧间压缩期间，当四个像素在感知上类似于前一帧中的相同四个像素时，未使用的块用于表示与前一帧不变的四个像素值。 此外，当块中的四个像素值彼此感知相似时，帧间压缩视频帧使用同质块来表示具有单个像素的四个像素值，但在感知上不同于前一帧中的相同的四个像素。
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10.发明授权Hybrid video compression system and method capable of software-only decompression in selected multimedia systems 失效混合视频压缩系统和方法能够在选定的多媒体系统中进行软件解压缩
公开(公告)号：US5392072A
公开(公告)日：1995-02-21
申请号：US965580
申请日：1992-10-23
CPC分类号： H04N19/98 , H04N19/186 , H04N19/13 , H04N19/60 , H04N19/91
摘要： Hybrid compression processes for digital color video data that enables software only playback of the compressed digital video in low-end computers, wherein intraframe and interframe compression techniques are brought together through a sequence of procedures that analyze local frame regions, integrate unique processes with block truncation coding compression, and adopt the advantages of visual pattern image coding for color video. The process determines the appropriate encoding of each local frame region with one of various compression techniques, based upon its image properties. The compression methods retain the fidelity of the original video data to provide high quality video during decompression and reconstruction of high motion and textured video clips, while simultaneously providing sufficient compression and ease of decoding for software-only decompression thereby exhibiting properties that enable good quality video to be displayed in low-end computers.
摘要翻译： 用于数字彩色视频数据的混合压缩处理，其使得仅在低端计算机中仅软件压缩数字视频的复制，其中通过分析本地帧区域的一系列过程将帧内和帧间压缩技术汇集在一起，将特定进程与块截断集成 编码压缩，并采用彩色视频的视觉图像图像编码优点。 该过程基于其图像属性，使用各种压缩技术之一来确定每个局部帧区域的适当编码。 压缩方法保留了原始视频数据的保真度，以便在高运动和纹理视频剪辑的解压缩和重建期间提供高质量视频，同时为仅软件解压缩提供足够的压缩和易于解码，从而展现能够实现高质量视频的属性 显示在低端电脑中。
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