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21.发明授权
公开(公告)号：US5751856A
公开(公告)日：1998-05-12
申请号：US326809
申请日：1994-10-19
申请人： Yasuji Hirabayashi
发明人： Yasuji Hirabayashi
CPC分类号： H03M7/3082 , G06T9/008 , H04N19/126 , H04N19/132 , H04N19/176 , H04N19/18 , H04N19/59 , H04N19/94 , H04N19/124 , H04N19/60
摘要： A quantized vector decoder, a method of making the code book therefor, a system for transferring quantized vector, an image processing apparatus utilizing the vector quantization, and a vector quantizer are disclosed, the quantized vector being arranged to decode codes, which have been formed by vector-quantizing vectors formed of collecting a plurality of data items correlating to one another into output vectors, the decoder comprising: an input device for receiving the codes; a code book for previously storing the output vectors of the vector-quantized codes, each of the output vectors in the code book being constituted by a first output-vector component portion and a second output vector component portion; a retrieval device for retrieving the output vectors in the code book depending upon the correspondence between an input code and the first output-vector component portion; and an output device for transmitting the retrieved output vectors in the form of a combination of their first and second output vector component portions.
摘要翻译： 公开了一种量化矢量解码器，其编码方法，用于传送量化矢量的系统，利用矢量量化的图像处理装置和矢量量化器，量化矢量被布置成对已经形成的码进行解码 通过将彼此相关的多个数据项收集成输出矢量形成的矢量量化矢量，所述解码器包括：用于接收代码的输入装置; 用于预先存储矢量量化码的输出矢量的码本，码本中的每个输出矢量由第一输出矢量分量部分和第二输出矢量分量部分构成; 检索装置，用于根据输入代码和第一输出向量分量部分之间的对应关系来检索代码本中的输出向量; 以及输出装置，用于以其第一和第二输出向量分量部分的组合的形式发送检索的输出向量。
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公开(公告)号：US5448654A
公开(公告)日：1995-09-05
申请号：US206212
申请日：1994-03-03
CPC分类号： H04N1/4172 , H04N1/40062 , H04N1/40068 , H04N1/409 , H04N1/4105
摘要： An image reduction apparatus includes a smoothing unit for smoothing binary image data, a binarization unit for binarizing an output from the smoothing unit, a detection unit for detecting an attribute of the binary image data smoothed by the smoothing unit, a plurality of correction units corresponding to a plurality of attributes, and a selector for selecting one of the correction units in accordance with the attribute detected by the detection unit. An output from the binarization unit is corrected by the correction unit selected by the selector.
摘要翻译： 图像缩小装置包括用于平滑二进制图像数据的平滑单元，用于对来自平滑单元的输出进行二值化的二值化单元，用于检测由平滑单元平滑化的二值图像数据的属性的检测单元，对应于多个校正单元 多个属性，以及选择器，用于根据由检测单元检测的属性来选择一个校正单元。 来自二值化单元的输出由选择器选择的校正单元校正。
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公开(公告)号：US5309524A
公开(公告)日：1994-05-03
申请号：US886945
申请日：1992-05-22
CPC分类号： G06T3/40 , H04N1/3935
摘要： An image reducing apparatus for obtaining a reduced image from an image of an original size has: a filter to execute a filtering process to the image of the original size every image block of a predetermined size; a discriminating circuit to discriminate a structure of the image block filter processed by the filter; a correcting circuit to correct an output of the filter in accordance with the discriminated structure; and a binarization unit to binarize the output of the filter. By executing the reduction suitable for the image content in consideration of the peripheral images of the object pixel to be reduced and the peripheral reduced images, a reduced image can be obtained without extinguishing the content of the image of the original size, and especially, without fading or losing the thin lines in the reduced image.
摘要翻译： 用于从原始尺寸的图像获得缩小图像的图像缩小装置具有：对于预定尺寸的每个图像块对原始大小的图像执行滤波处理的滤波器; 识别电路，用于区分由滤波器处理的图像块滤波器的结构; 校正电路，用于根据鉴别结构校正滤波器的输出; 以及二值化单元来二值化滤波器的输出。 考虑到要减少的对象像素的周边图像和周边缩小图像，通过执行适合于图像内容的缩小，可以获得缩小的图像而不消除原始尺寸的图像的内容，特别是没有 在缩小图像中衰减或丢失细线。
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公开(公告)号：US06501795B1
公开(公告)日：2002-12-31
申请号：US08907493
申请日：1997-08-08
申请人： Yasuji Hirabayashi
发明人： Yasuji Hirabayashi
IPC分类号： H04N718
CPC分类号： H04N19/18 , H04N19/107 , H04N19/132 , H04N19/152 , H04N19/593 , H04N19/61
摘要： A moving-picture encoder performs efficient encoding by selecting prescribed encoding on the basis of a decoded block of a frame which includes a block to be encoded, and performing predictive encoding of the block to be encoded by using the selected encoding.
摘要翻译： 运动图像编码器通过基于包括要编码的块的帧的解码块来选择规定的编码，并且通过使用所选择的编码来执行要编码的块的预测编码来执行高效编码。
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公开(公告)号：US6038345A
公开(公告)日：2000-03-14
申请号：US927263
申请日：1997-09-11
申请人： Hidefumi Osawa , Yasuji Hirabayashi
发明人： Hidefumi Osawa , Yasuji Hirabayashi
CPC分类号： G06T9/007
摘要： An image processing apparatus includes an input unit for inputting image data having undergone orthogonal transformation, a generation unit for generating interframe difference image data, of adjacent frames with respect to the image data input by the input unit, using orthogonal transform coefficients, and an encoding unit for encoding the image data output from the generation unit. An image processing apparatus includes an input unit for inputting encoded data obtained by performing block encoding of interframe difference data using orthogonal transformation, a decoding unit for decoding the encoded data input by the input unit into orthogonal transform coefficient difference data, and an addition unit for adding the orthogonal transform coefficient data of a block different from a processed block to the difference data decoded by the decoding unit.
摘要翻译： 一种图像处理装置包括：输入单元，用于输入正交变换的图像数据;生成单元，用于生成帧间差分图像数据;相对于由输入单元输入的图像数据的相邻帧，使用正交变换系数;以及编码 用于编码从生成单元输出的图像数据的单元。 一种图像处理装置包括：输入单元，用于输入通过使用正交变换执行帧间差分数据的块编码获得的编码数据;解码单元，用于将由输入单元输入的编码数据解码为正交变换系数差数据;以及加法单元， 将与处理块不同的块的正交变换系数数据与由解码单元解码的差分数据相加。
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公开(公告)号：US6014463A
公开(公告)日：2000-01-11
申请号：US645590
申请日：1996-05-14
申请人： Yasuji Hirabayashi
发明人： Yasuji Hirabayashi
CPC分类号： H04N19/593
摘要： An image processor includes a forming unit which measures a feature of a first image and a feature of a second image for a plurality of pixels other than an encode objective pixel, thereby forming a first measurement result and a second measurement result, respectively. An encoder determines an encoding method of the encode objective pixel on the basis of a plurality of the first measurement results and a plurality of the second measurement results, and encodes by using the determined encoding method.
摘要翻译： 图像处理器包括：形成单元，其测量除了编码对象像素之外的多个像素的第一图像的特征和第二图像的特征，从而分别形成第一测量结果和第二测量结果。 编码器基于多个第一测量结果和多个第二测量结果来确定编码目标像素的编码方法，并通过使用所确定的编码方法进行编码。
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公开(公告)号：US5991450A
公开(公告)日：1999-11-23
申请号：US708628
申请日：1996-09-05
CPC分类号： H04N1/415
摘要： At the encoding side, a sum of code lengths of a block is calculated and stored in a memory for each of block lines (stripes); and at the decoding side, when decoding of one block is completed, a head address of a code in the next block is calculated utilizing a sum of an amount of codes utilized for the decoding operation and code lengths for each of the stripes. The rotation process of an image utilizing encoded data is performed in accordance with the head address. Further, at the encoding side, colors of pixels in a predetermined block is determined, and encoding operation is performed block by block for only those blocks including pixels of different colors. At the decoding side, an address of block data for sequentially constructing a rotated image is controlled to decode the pixels in the block, and finally the rotation process is performed on the pixels in the block in accordance with the color of the pixels.
摘要翻译： 在编码侧，针对每个块线（条纹）计算块的码长度的总和并将其存储在存储器中。 并且在解码侧，当完成一个块的解码时，利用用于解码操作的代码量和每个条带的代码长度的和来计算下一个块中的代码的头地址。 使用编码数据的图像的旋转处理根据头地址进行。 此外，在编码侧，确定预定块中的像素的颜色，并且对于仅包括不同颜色的像素的块逐块地执行编码操作。 在解码侧，控制用于顺序构造旋转图像的块数据的地址，对块中的像素进行解码，最后根据像素的颜色对块中的像素执行旋转处理。
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公开(公告)号：US5956153A
公开(公告)日：1999-09-21
申请号：US427835
申请日：1995-04-26
申请人： Yasuji Hirabayashi
发明人： Yasuji Hirabayashi
IPC分类号： H04N19/50 , G06T9/00 , H04N19/126 , H04N19/149 , H04N19/152 , H04N19/176 , H04N19/189 , H04N19/196 , H04N19/423 , H04N19/46 , H04N19/463 , H04N19/503 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/85 , H04N19/91 , H04N1/415
CPC分类号： H04N19/115 , H04N19/10 , H04N19/126 , H04N19/154 , H04N19/176 , H04N19/60 , H04N19/61 , H04N19/124 , H04N19/146 , H04N19/152 , H04N19/20
摘要： Image coding method and apparatus for improving image quality by controlling amount of encoded image data in variable-length coding. The image encoding apparatus comprising: input unit for inputting image data for each block having a first size; encoding unit for encoding the image data for each block and generating encoded image data; and controlling unit for controlling an encoding parameter for each block in accordance with amount of the encoded image data, wherein controlling unit controls the encoding parameter further in accordance with the position of the block to be encoded.
摘要翻译： 通过控制可变长度编码中的编码图像数据的量来提高图像质量的图像编码方法和装置。 该图像编码装置包括：输入单元，用于输入具有第一尺寸的每个块的图像数据; 编码单元，用于对每个块的图像数据进行编码并生成编码图像数据; 以及控制单元，用于根据编码图像数据的量控制每个块的编码参数，其中控制单元根据要编码的块的位置进一步控制编码参数。
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公开(公告)号：US5875039A
公开(公告)日：1999-02-23
申请号：US763626
申请日：1996-12-04
CPC分类号： G06T3/4084 , G06T9/007
摘要： When image data coded by a DCT coding method in a predetermined block size is to be decoded, an image processing apparatus extracts necessary DCT coefficients of a block on the basis of an enlargement/reduction ratio determined in advance, then decodes the extracted DCT coefficients. Thereby it is possible to produce a reduced image at high speed without using a memory of high capacity.
摘要翻译： 当要对以预定块大小的DCT编码方法编码的图像数据进行解码时，图像处理装置根据预先确定的放大/缩小比提取块的必要DCT系数，然后对所提取的DCT系数进行解码。 因此，可以在不使用高容量的存储器的情况下高速地产生缩小的图像。
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公开(公告)号：US5680225A
公开(公告)日：1997-10-21
申请号：US833911
申请日：1992-02-11
CPC分类号： H04N1/3935 , G06T3/40
摘要： A binary image reducing method is so adapted that image reduction in which the occurrence of discontinuous lines is eliminated, is made possible even when there is a change in the reduction magnification of an image containing many lines of one-pixel width and characters or the like composed of line elements having a width of one to several pixels, such as an image created by a computer. First, an original image is subjected to enlargement processing by a micro-enlarging circuit, whereby the image is enlarged by 2.times.p (where, and the reduction ratio is p). Thereafter, 1/2 reduction processing, of the type which preserves fine lines, is executed by a 1/2 reducing circuit. As a result, it is possible to achieve a change in reduction at any desired magnification of 1/2-1 as well as preservation of fine lines in the reduced image obtained. In another embodiment, an original image is subjected to enlargement processing by a micro-enlarging circuit, after which reduction processing, of a type which preserves fine lines, is executed by a repetitive reducing circuit in response to a command from a decision unit. As a result, it is possible to achieve a change in reduction at any desired magnification of 0.about.1 as well as preservation of fine lines in the reduced image obtained.
摘要翻译： 二值图像减少方法适于使得消除不连续线的发生的图像缩小成为可能，即使当包含多个一个像素宽度的线的图像的字形等的缩小倍率有变化时 由具有一至几个像素的宽度的线元素组成，诸如由计算机创建的图像。 首先，通过微放大电路对原始图像进行放大处理，由此图像被放大2xp（其中，并且缩小比为p）。 此后，通过+ E，fra 1/2 + EE减少电路执行保留细线类型的+ E，fra 1/2 + EE减少处理。 结果，可以在任何所需放大倍数+ E，fra 1/2 + EE -1下实现还原的变化，以及在所获得的还原图像中保留细纹。 在另一个实施例中，通过微放大电路对原始图像进行放大处理，之后响应于来自决定单元的命令，由重复减少电路执行保留细线的类型的缩小处理。 结果，可以在0差异1的任何期望的倍率下实现还原的变化，并且可以在所获得的还原图像中保留细线。
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