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1. 发明授权

US5168375A Image reconstruction by use of discrete cosine and related transforms 失效
标题翻译：通过使用离散余弦和相关变换的图像重建
公开(公告)号：US5168375A
公开(公告)日：1992-12-01
申请号：US761660
申请日：1991-09-18
申请人： Michael L. Reisch , Munib A. Wober
发明人： Michael L. Reisch , Munib A. Wober
IPC分类号： G06F17/14 , G06F17/17 , G06T9/00 , H04N7/26 , H04N7/30
CPC分类号： G06F17/145 , G06F17/175 , H04N19/126 , H04N19/132 , H04N19/176 , H04N19/18 , H04N19/48 , H04N19/59 , H04N19/85 , H04N19/86 , H04N19/90
摘要： A method for processing a field of image data samples to provide for one or more of the functions of decimation, interpolation, and sharpening is accomplished by use of an array transform processor such as that employed in a JPEG compression system. Blocks of data samples are transformed by the discrete even cosine transform (DECT) in both the decimation and interpolation processes, after which the number of frequency terms is altered. In the case of decimation, the number of frequency terms is reduced, this being followed by inverse transformation to produce a reduced-size matrix of sample points representing the original block of data. In the case of interpolation, additional frequency components of zero value are inserted into the array of frequency components after which inverse transformation produces an enlarged data sampling set without an increase in spectral bandwidth. In the case of sharpening, accomplished by a convolution or filtering operation involving multiplication of transforms of data and filter kernel in the frequency domain, there is provided an inverse transformation resulting in a set of blocks of processed data samples. The blocks are overlapped followed by a savings of designated samples, and a discarding of excess samples from regions of overlap. The spatial representation of the kernel is modified by reduction of the number of components, for a linear-phase filter, and zero-padded to equal the number of samples of a data block, this being followed by forming the discrete odd cosine transform (DOCT) of the padded kernel matrix.
摘要翻译：用于处理图像数据样本的领域以提供抽取，插值和锐化的一个或多个功能的方法通过使用诸如在JPEG压缩系统中采用的阵列变换处理器来实现。在抽取和插值过程中，通过离散偶数余弦变换（DECT）来转换数据样本块，之后改变频率项的数量。在抽取的情况下，频率项的数量减少，随后进行逆变换以产生表示原始数据块的采样点的缩小尺寸矩阵。在内插的情况下，将零值的附加频率分量插入到频率分量阵列中，之后逆变换产生放大的数据采样集而不增加频谱带宽。在锐化的情况下，通过卷积或滤波操作来实现，该卷积或滤波操作涉及频域中的数据变换和滤波器核的相乘，提供了一个逆变换，得到一组经处理的数据采样块。块被重叠，之后是指定样本的节省，以及从重叠区域丢弃多余的样本。内核的空间表示通过减少元件数量，对于线性相位滤波器进行修改，并且零填充以等于数据块的样本数，随后形成离散奇数余弦变换（DOCT ）的填充内核矩阵。

2. 发明授权

US06842186B2 High speed photo-printing apparatus 失效
标题翻译：高速照相打印设备
公开(公告)号：US06842186B2
公开(公告)日：2005-01-11
申请号：US10080883
申请日：2002-02-22
申请人： Alain Bouchard , Brian D. Busch , Daniel P. Bybell , Anemarie DeYoung , Sandra B. Lawrence , Michael L. Reisch , Suhail S. Saquib , Dana F. Schuh , Stephen J. Telfer , Jay E. Thornton , William T. Vetterling , Michael S. Viola
发明人： Alain Bouchard , Brian D. Busch , Daniel P. Bybell , Anemarie DeYoung , Sandra B. Lawrence , Michael L. Reisch , Suhail S. Saquib , Dana F. Schuh , Stephen J. Telfer , Jay E. Thornton , William T. Vetterling , Michael S. Viola
IPC分类号： B41J2/325 , B41J2/36 , G07F17/26 , H04N1/00 , B41J2/37
CPC分类号： B41J2/3555 , B41J2/325 , B41J2/36 , G07F17/26 , H04N1/00132 , H04N1/00167 , H04N1/00169 , H04N1/00188 , H04N1/34 , H04N2201/0065
摘要： A thermal printer is disclosed which includes a plurality of thermal print heads, each of the plurality of thermal print heads being operable to print a distinct one of a plurality of colors. The plurality of thermal print heads may print output at a plurality of spatial resolutions. The thermal printer may include dot size varying means for varying perceived levels of color printed by the thermal printer by varying sizes of dots printed by the plurality of thermal print heads. The printer may perform various image processing steps on an image to be printed, such as tone scale adjustment, thermal history control, and common mode voltage correction, to improve the perceived quality of the printed image. The thermal printer may be incorporated into a digital photo-printing vending machine for printing images provided by a customer.
摘要翻译：公开了一种热敏打印机，其包括多个热打印头，多个热打印头中的每一个可操作以打印多种颜色中的不同的一种。多个热敏打印头可以以多个空间分辨率打印输出。热敏打印机可以包括点尺寸变化装置，用于通过改变由多个热打印头打印的点的尺寸来改变由热敏打印机印刷的颜色的感知水平。打印机可以对要打印的图像执行各种图像处理步骤，例如色阶调节，热历史控制和共模电压校正，以提高打印图像的感知质量。热敏打印机可以结合到用于打印客户提供的图像的数字照片打印自动售货机中。

3. 发明授权

US5887084A Structuring a digital image into a DCT pyramid image representation 失效
标题翻译：将数字图像构建为DCT金字塔图像表示
公开(公告)号：US5887084A
公开(公告)日：1999-03-23
申请号：US966140
申请日：1997-11-07
申请人： Munib A. Wober , Yibing Yang , Ibrahim Hajjahmad , Lon E. Sunshine , Michael L. Reisch
发明人： Munib A. Wober , Yibing Yang , Ibrahim Hajjahmad , Lon E. Sunshine , Michael L. Reisch
IPC分类号： G06F17/14 , G06K9/36 , G06K9/46
CPC分类号： G06F17/141
摘要： A method or system for structuring an image which corresponds to an original array of pixels, as a forward discrete even cosine transform (DCT) pyramid having a predetermined number of levels where each level is associated with a different DCT frequency band, includes, respectively, the steps or functionality of: partitioning the original array into blocks of overlapped pixels; taking a DCT of each block of overlapped pixels to generate blocks of first level DCT coefficients forming a first level of the DCT pyramid; storing the first level of the DCT pyramid; selecting and storing at least one of the first level DCT coefficients of each block of first level DCT coefficients into a first temporary array; partitioning the first temporary array into blocks of overlapped coefficients; and taking a DCT of each block of overlapped coefficients of the first temporary array to generate blocks of second level DCT coefficients forming a second level of the DCT pyramid. Additional levels can be created by repeating the previous steps, and the processed image can be restored by reversing the above sequence of steps using inverse discrete even cosine transforms.
摘要翻译：一种用于构造与原始像素阵列相对应的图像的方法或系统，分别具有每个级别与不同的DCT频带相关联的具有预定数量的级别的前向离散偶数变换（DCT）金字塔，步骤或功能：将原始阵列分割成重叠像素块; 对每个重叠像素块进行DCT以产生形成DCT金字塔的第一级的第一级DCT系数的块; 存储DCT金字塔的第一级; 将第一级DCT系数的每个块的第一级DCT系数中的至少一个选择并存储到第一临时阵列中; 将第一临时阵列划分成重叠系数的块; 以及对所述第一临时阵列的每个重叠系数块进行DCT以产生形成所述DCT金字塔的第二级的第二级DCT系数的块。可以通过重复前面的步骤来创建附加级别，并且可以通过使用反离散偶数余弦变换来反转上述步骤序列来恢复处理后的图像。

4. 发明授权

US5774598A System and method for sample rate conversion of an image using discrete cosine transforms 失效
标题翻译：使用离散余弦变换的图像采样率转换的系统和方法
公开(公告)号：US5774598A
公开(公告)日：1998-06-30
申请号：US440631
申请日：1995-05-15
申请人： Lon E. Sunshine , Michael L. Reisch , Munib A. Wober
发明人： Lon E. Sunshine , Michael L. Reisch , Munib A. Wober
IPC分类号： H04N5/262 , G06F17/14 , G06T3/40 , G06T5/00 , G06T5/20 , G06T9/00 , H04N1/393 , H04N7/26 , H04N7/30 , H04N7/46 , H04N9/04 , G06K9/36 , G06K9/46
CPC分类号： G06T3/4084 , G06F17/147 , H04N19/132 , H04N19/176 , H04N19/18 , H04N19/48 , H04N19/59 , H04N19/60 , H04N19/90 , H04N9/045 , H04N2209/046
摘要： An image processing system for sample rate conversion of an image signal representing an image of pixels from a first sample rate to a second sample rate includes: an image acquisition device for acquiring the image signal from an image signal source at the first sample rate; a first memory for buffering the input signal; a second memory for storing predetermined discrete cosine transform coefficients; a dot product multiplier for multiplying the image signal retrieved from the first memory times the predetermined coefficients to produce an output signal at the second sampling rate; a third memory for buffering the output signal; control sequencer logic for controlling operation of the image processing system; and an output device for providing a resampled image at the second sampling rate from the output signal. The image processing system facilitates sample rate conversion by segmenting the image into segments of image data points wherein a separate and different offset is determined for each segment. A discrete cosine transform is performed on each segment of image data points to generate corresponding DCT coefficients. Thereafter, resampled image data points are generated by taking a modified IDCT of the DCT coefficients using a modified IDCT basis matrix which is dependent upon a sampling rate conversion ratio and/or an offset.
摘要翻译：一种图像处理系统，用于将表示从第一采样率到第二采样率的像素图像的图像信号的采样率转换包括：图像获取装置，用于以第一采样率从图像信号源获取图像信号; 用于缓冲输入信号的第一存储器; 用于存储预定的离散余弦变换系数的第二存储器; 用于将从第一存储器检索的图像信号乘以预定系数的点乘积乘法器，以产生第二采样率的输出信号; 用于缓冲输出信号的第三存储器; 用于控制图像处理系统的操作的控制定序器逻辑; 以及输出装置，用于从输出信号提供第二采样率的重采样图像。图像处理系统通过将图像分割成图像数据点的片段来促进采样率转换，其中为每个片段确定单独且不同的偏移。对图像数据点的每个段执行离散余弦变换，以产生相应的DCT系数。此后，通过使用依赖于采样率转换比和/或偏移量的修改的IDCT基矩阵来获取DCT系数的修改的IDCT来生成重新采样的图像数据点。

5. 发明授权

US5729631A Image noise reduction system using a wiener variant filter in a pyramid image representation 失效
标题翻译：图像降噪系统在金字塔图像表示中使用维纳变体滤镜
公开(公告)号：US5729631A
公开(公告)日：1998-03-17
申请号：US440639
申请日：1995-05-15
申请人： Munib A. Wober , Yibing Yang , Ibrahim Hajjahmad , Lon E. Sunshine , Michael L. Reisch
发明人： Munib A. Wober , Yibing Yang , Ibrahim Hajjahmad , Lon E. Sunshine , Michael L. Reisch
IPC分类号： H04N5/262 , G06F17/14 , G06T3/40 , G06T5/00 , G06T5/20 , G06T9/00 , H04N1/409 , H04N7/26 , H04N7/30 , H04N7/46 , H04N9/04 , G06K9/36
CPC分类号： G06F17/147 , G06T3/4084 , G06T5/002 , G06T5/10 , G06T5/20 , H04N19/132 , H04N19/176 , H04N19/18 , H04N19/48 , H04N19/59 , H04N19/60 , H04N19/90 , H04N9/045 , G06T2207/20016 , G06T2207/20021 , G06T2207/20052 , H04N2209/046
摘要： The invention relates to a novel process and system for removing noise from an image by first noise modeling an image signal source to generate noise masks and LUT values characteristic of noise at different frequency levels for each channel, and then applying the stored noise masks and LUT values to an image signal for noise removal. The image is first captured as an electronic image signal by the image signal source, then represented by a pyramid structure whereby each successive level of the pyramid is constructed from DC values of the previous level, and each level of the pyramid corresponds to a different frequency band of the image signal. A Wiener variant filter using DCT transforms is used to filter DCT coefficients at each level. The image is restored with reduced noise by replacing DC values with next level IDCT coefficients then performing an IDCT on the results.
摘要翻译：本发明涉及一种用于通过对图像信号源进行第一噪声建模以产生噪声掩模和针对每个通道的不同频率级别的噪声特征的LUT值来从图像中去除噪声的新颖过程和系统，然后将所存储的噪声掩码和LUT 值到噪声去除的图像信号。图像首先被图像信号源捕获为电子图像信号，然后由金字塔结构表示，由此金字塔的每个连续级别由先前级别的DC值构成，并且金字塔的每个级别对应于不同的频率带的图像信号。使用DCT变换的维纳变量滤波器来滤波每个级别的DCT系数。通过用下一级IDCT系数代替DC值，然后对结果执行IDCT，从而降低图像的噪声。

6. 发明授权

US4525729A Parallel LED exposure control system 失效
标题翻译：并联LED曝光控制系统
公开(公告)号：US4525729A
公开(公告)日：1985-06-25
申请号：US481830
申请日：1983-04-04
申请人： Martin A. Agulnek , Joseph M. Canter , Michael L. Reisch
发明人： Martin A. Agulnek , Joseph M. Canter , Michael L. Reisch
IPC分类号： G06K15/12 , H04N1/40 , G01D15/14 , H04N1/30
CPC分类号： G06K15/1247 , H04N1/40031
摘要： An electronic imaging system includes a linear LED array for recording on a photosensitive medium an image defined by electronic signal information in binary word format by simultaneously controlling the energization of all the LED's at a constant energy level in a series of intervals, each of which is timed differently to correspond to a different one of the data bits in the binary words which comprise the image defining electronic signal information. Each LED is energized during each interval as a direct function of the state of the data bit corresponding to that interval for that LED.
摘要翻译：电子成像系统包括：线性LED阵列，用于通过以一系列间隔同时控制所有LED以恒定能量级别的能量来以二进制字格式在电子信号信息定义的图像上在感光介质上记录图像，每个间隔是定时不同，以对应于构成定义电子信号信息的图像的二进制字中的不同的数据位。在每个间隔期间，每个LED都是通电的，作为与该LED间隔相对应的数据位的状态的直接函数。

7. 发明授权

US5748770A System and method for color recovery using discrete cosine transforms 失效
标题翻译：使用离散余弦变换进行色彩恢复的系统和方法
公开(公告)号：US5748770A
公开(公告)日：1998-05-05
申请号：US441000
申请日：1995-05-15
申请人： Ibrahim Hajjahmad , Michael L. Reisch , F. Richard Soini , Munib A. Wober
发明人： Ibrahim Hajjahmad , Michael L. Reisch , F. Richard Soini , Munib A. Wober
IPC分类号： H04N5/262 , G06F17/14 , G06T1/00 , G06T3/40 , G06T5/00 , G06T5/20 , G06T9/00 , H04N1/46 , H04N1/60 , H04N7/26 , H04N7/30 , H04N7/46 , H04N9/04 , H04N9/64 , G06K9/00 , H04N1/415
CPC分类号： G06T3/4084 , G06F17/147 , G06T3/4015 , H04N19/132 , H04N19/176 , H04N19/18 , H04N19/48 , H04N19/59 , H04N19/60 , H04N19/90 , H04N9/045 , H04N2209/046 , H04N2209/049
摘要： Full color resolution of an image is realized by reconstructing an array of image data points from an image signal representing the image into a shifted array of pseudo pixels. The particular grid type of the array will dictate whether color recovery uses only vertical resolution, only horizontal resolution, vertical resolution followed by horizontal resolution, or horizontal resolution followed by vertical resolution. For each color channel, interpolation of missing color components is accomplished by first, taking a DCT of the image data points, then taking a modified IDCT of the DCT coefficients.
摘要翻译：通过将表示图像的图像信号的图像数据点的阵列重建为移动的伪像素阵列，实现图像的全色分辨率。阵列的特定网格类型将决定色彩恢复是仅使用垂直分辨率，仅使用水平分辨率，垂直分辨率，然后是水平分辨率，还是水平分辨率，然后垂直分辨率。对于每个颜色通道，通过首先获取图像数据点的DCT，然后获取DCT系数的修改的IDCT来完成缺失颜色分量的内插。

8. 发明授权

US5740284A Coding method and apparatus for resampling and filtering images using discrete cosine transforms 失效
标题翻译：使用离散余弦变换重新采样和滤波图像的编码方法和装置
公开(公告)号：US5740284A
公开(公告)日：1998-04-14
申请号：US427457
申请日：1995-05-18
申请人： Munib A. Wober , Michael L. Reisch
发明人： Munib A. Wober , Michael L. Reisch
IPC分类号： H04N5/262 , G06F17/14 , G06T3/40 , G06T5/00 , G06T5/20 , G06T9/00 , H04N7/26 , H04N7/30 , H04N7/46 , H04N9/04 , G06K9/03 , H04N1/415
CPC分类号： H04N9/045 , G06F17/147 , G06T3/4084 , H04N19/132 , H04N19/176 , H04N19/18 , H04N19/48 , H04N19/59 , H04N19/60 , H04N19/90 , H04N2209/046
摘要： Image processing methods and apparatus by which images in the spatial domain can be represented in the frequency domain through the use of discrete cosine transforms, conveniently operated on to achieve scaling and filtering effects while in the frequency domain, and then retransformed to the spatial domain or stored, displayed, reproduced or transmitted to distant locations for subsequent reuse. The scaling techniques which the invention utilizes can be for image enlargement by interpolation or image reduction by decimation. In the case of decimation, a filtering operation preferably is first performed in the frequency domain to avoid artifacts in the decimation process. The filtering operation is mathematically equivalent to a linear convolution in the spatial domain as a consequence of the properties of the DCT transformation. In both interpolation and decimation procedures, use is made of a hybrid inverse discrete cosine transform in which the series of cosine terms are evaluated at values arrived at by scaling ratio considerations, rather than the usual sampling index increments. As a consequence, image data points other than original image data in the spatial domain can be created or replaced by an approximation technique which involves transforming the image data points to frequency space by a series of terms that can be considered to be continuous over the range of the sampling index corresponding to the original image data.
摘要翻译：可以通过使用离散余弦变换在频域中表示空间域中的图像的图像处理方法和装置，其方便地在频域中实现缩放和滤波效果，然后再次转换为空间域或存储，显示，再现或传输到远处，以便后续重用。本发明利用的缩放技术可以通过插值或通过抽取进行图像缩小来进行图像放大。在抽取的情况下，首先在频域中执行滤波操作以避免抽取处理中的伪影。滤波操作在数学上等同于空间域中的线性卷积，作为DCT变换的性质的结果。在插值和抽取过程中，使用混合逆离散余弦变换，其中在通过缩放比率考虑到达的值处评估一系列余弦项，而不是通常的采样指数增量。因此，可以通过近似技术创建或替换除空间域中的原始图像数据之外的图像数据点，该近似技术涉及通过可被认为在该范围上连续的一系列术语将图像数据点变换为频率空间的采样指数对应于原始图像数据。

9. 发明授权

US5719958A System and method for image edge detection using discrete cosine transforms 失效
标题翻译：使用离散余弦变换进行图像边缘检测的系统和方法
公开(公告)号：US5719958A
公开(公告)日：1998-02-17
申请号：US440651
申请日：1995-05-15
申请人： Munib A. Wober , Yibing Yang , Michael L. Reisch
发明人： Munib A. Wober , Yibing Yang , Michael L. Reisch
IPC分类号： H04N5/262 , G06F17/14 , G06T3/40 , G06T5/00 , G06T5/20 , G06T9/00 , H04N7/26 , H04N7/30 , H04N7/46 , H04N9/04 , G06K9/48 , G06K9/36 , G06K9/40 , G06K9/46
CPC分类号： G06F17/147 , G06T3/4084 , G06T7/0083 , H04N19/132 , H04N19/176 , H04N19/18 , H04N19/48 , H04N19/59 , H04N19/60 , H04N19/90 , H04N9/045 , G06T2207/10016 , G06T2207/20052 , H04N2209/046
摘要： The image processing system of the present invention provides electronic edge detection in keeping with ISO/JPEG/MPEG international compression standards for electronic imaging. Specifically, a novel electronic image processing system for edge detection includes: an image acquisition device for acquiring and representing an image as an electronic image signal; a video memory for storing the image signal; a display for displaying the image signal; a raster to block converter for converting the image signal into block format; a DCT/IDCT processor for transforming the converted signal in accordance with predetermined basis matrices stored in a basis matrix memory; a mask multiplier for generating a mask multiplied signal in accordance with predetermined Laplacian matrices stored in an A matrix memory; a buffer for storing the mask multiplied signal; and a controller for controlling the image processing system in accordance with instructions from a central processing unit (CPU).
摘要翻译：本发明的图像处理系统提供电子边缘检测，以符合电子成像的ISO / JPEG / MPEG国际压缩标准。具体地说，一种用于边缘检测的新型电子图像处理系统包括：图像获取装置，用于获取和表示作为电子图像信号的图像; 用于存储图像信号的视频存储器; 用于显示图像信号的显示器; 用于将图像信号转换为块格式的光栅到块转换器; DCT / IDCT处理器，用于根据存储在基本矩阵存储器中的预定基矩阵来变换转换的信号; 掩模乘法器，用于根据存储在A矩阵存储器中的预定拉普拉斯矩阵产生掩模相乘信号; 用于存储掩模相乘信号的缓冲器; 以及控制器，用于根据来自中央处理单元（CPU）的指令来控制图像处理系统。

10. 发明授权

US5706216A System for data compression of an image using a JPEG compression circuit modified for filtering in the frequency domain 失效
标题翻译：使用修改为频域滤波的JPEG压缩电路对图像进行数据压缩的系统
公开(公告)号：US5706216A
公开(公告)日：1998-01-06
申请号：US508745
申请日：1995-07-28
申请人： Michael L. Reisch
发明人： Michael L. Reisch
IPC分类号： G06T9/00 , H03H17/02 , H04N1/41 , H04N7/26 , H04N7/30 , G06F17/00
CPC分类号： H03H17/0202 , H04N19/126 , H04N19/48 , H04N19/527 , H04N19/80 , H04N19/86 , H04N19/90 , H04N19/124 , H04N19/60
摘要： A system for filtering an image during data compression using a standard JPEG compression/decompression chip typically requires a separate spatial filter external to the chip. The spatial filter is composed of numerous shift registers, flip-flops, multipliers and at least one adder. In contrast, an image filtering system which filters in the frequency domain using the inventive JPEG compression chip modified for filtering in the frequency domain does not require the separate spatial filter and its many components. The modified JPEG chip includes a raster to block converter which converts an image signal into 8.times.8 blocks, a DCT processor which converts the 8.times.8 blocks into DCT coefficients, a multiplier which generates filtered DCT coefficients by multiplying predetermined filtering coefficients times the DCT coefficients, a quantizer which generates quantized blocks to a predetermined level stored in a visibility table by quantizing the filtered coefficients, a zigzag scanner which generates a vector having the same number of elements as the quantized blocks, a run-length coder for determining the appropriate run-length according to entropy encoding received from a preloaded Huffman table, and a variable length code packer/unpacker for compressing the entropy encoded vector. A block to raster converter is included to reformat decompressed data.
摘要翻译：在使用标准JPEG压缩/解压缩芯片的数据压缩期间过滤图像的系统通常需要在芯片外部的单独的空间滤波器。空间滤波器由多个移位寄存器，触发器，乘法器和至少一个加法器组成。相比之下，使用修改为频域滤波的本发明JPEG压缩芯片对频域进行滤波的图像滤波系统不需要单独的空间滤波器及其许多分量。经修改的JPEG芯片包括将图像信号转换为8×8块的光栅到块转换器，将8×8块转换为DCT系数的DCT处理器，通过将预定滤波系数乘以DCT系数产生滤波DCT系数的乘法器，量化器其通过量化滤波后的系数将量化块产生到存储在可见度表中的预定水平;生成具有与量化块相同数量的元素的向量的锯齿形扫描器，用于根据量化块确定适当游程长度的游程长度编码器对从预加载的霍夫曼表接收的熵编码以及用于压缩熵编码向量的可变长度代码封装器/解包器。包括块到光栅转换器以重新格式化解压缩数据。

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