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21. 发明授权

US06768819B2 Image processing apparatus and method, and storage medium used therewith 失效
标题翻译：图像处理装置和方法以及与其一起使用的存储介质
公开(公告)号：US06768819B2
公开(公告)日：2004-07-27
申请号：US09797885
申请日：2001-03-05
申请人： Takeshi Yamazaki , Makoto Sato , Hiroshi Kajiwara
发明人： Takeshi Yamazaki , Makoto Sato , Hiroshi Kajiwara
IPC分类号： G06K946
CPC分类号： H04N19/1883 , H04N19/12 , H04N19/172 , H04N19/63
摘要： An image processing apparatus and method perform an efficient wavelet transform to provide sub-bands having a unit size for being encoded in an encoding device in a post-stage. In accordance with one embodiment of the present invention, the image processing apparatus includes a transform unit for performing a two-dimensional discrete wavelet transform on an input image to generate a plurality of frequency components, and an entropy encoding unit for performing entropy encoding on each of the frequency components in M×N-sized units. In a first encoding mode, the transform unit performs the two-dimensional discrete wavelet transform on the image either a predetermined number of times or for a number of times which allows a lowest frequency component (LL) to have a size of M×N, and in a second encoding mode, the transform unit performs the two-dimensional discrete wavelet transform on the image the predetermined number of times.
摘要翻译：图像处理装置和方法执行有效的小波变换以提供具有在后级中的编码装置中编码的单位大小的子带。根据本发明的一个实施例，图像处理装置包括：变换单元，用于对输入图像执行二维离散小波变换以产生多个频率分量;以及熵编码单元，用于对每个频率分量执行熵编码的MxN尺寸单元中的频率分量。在第一编码模式中，变换单元对图像进行二维离散小波变换，预定次数或次数允许最低频率分量（LL）具有M×N的大小，并且在第二编码模式，变换单元对图像执行预定次数的二维离散小波变换。

22. 发明授权

US06310980B1 Encoding apparatus and method and storage medium 有权
标题翻译：编码装置及方法及存储介质
公开(公告)号：US06310980B1
公开(公告)日：2001-10-30
申请号：US09666302
申请日：2000-09-21
申请人： Hiroshi Kajiwara
发明人： Hiroshi Kajiwara
IPC分类号： G06K936
CPC分类号： G06T9/004
摘要： An encoding apparatus for encoding each of target pixels composing one screen, comprising a predictor for generating a prediction value by predicting a target pixel value representing a target pixel on the basis of pixels around the target pixel, and a difference generator for generating a difference between the prediction value generated by the predictor and the target pixel value. A quantizer generates a quantized value by quantizing the difference generated by the difference generator, an entropy encoder generates encoded data by entropy-encoding the quantized value generated by the quantizer, and a quantization controller selects one of k quantization methods, which is to be used by the quantizer for every part image composing the one screen. Each of the k quantization methods is a quantization method which makes an error between the difference generated by the difference generator and a quantized value obtained by quantizing the difference using the quantizer fall within a range of −Nm to +Nm, wherein m=1 to k.
摘要翻译：一种用于编码构成一个屏幕的每个目标像素的编码装置，包括：用于通过基于目标像素周围的像素预测表示目标像素的目标像素值来生成预测值的预测器;以及差分发生器，由预测器生成的预测值和目标像素值。量化器通过量化差分发生器产生的差异来产生量化值，熵编码器通过对由量化器产生的量化值进行熵编码来生成编码数据，并且量化控制器选择要使用的k个量化方法中的一个通过量化器对构成一个屏幕的每个部分图像。 k量化方法中的每一个是使差分发生器产生的差与通过使用量化器量化差异而获得的量化值落在-Nm至+ Nm的范围内的误差的量化方法，其中m = 1至 k。

23. 发明授权

US6061474A Image processing apparatus and method 失效
标题翻译：图像处理装置及方法
公开(公告)号：US6061474A
公开(公告)日：2000-05-09
申请号：US668635
申请日：1996-06-21
申请人： Hiroshi Kajiwara , Tadashi Yoshida , Yasuji Hirabayashi
发明人： Hiroshi Kajiwara , Tadashi Yoshida , Yasuji Hirabayashi
IPC分类号： G06T9/00 , H04N1/41 , H04N7/26 , H04N7/30 , H04N7/32 , G06K9/36 , H04N7/12
CPC分类号： H04N19/50 , H04N19/13 , H04N19/60 , H04N19/91
摘要： An encoding error by the encoding and the decoding of an image is controlled within a predetermined range by an image processing apparatus which includes an input unit for inputting image data, a prediction unit for predicting pixel values indicated by the image data, a generation unit for generating pixel values derived by converting the pixel values of the image data within a range of .+-.e based on the prediction result by said prediction unit and an encoding unit for encoding parameters relating to the pixel values generated by said generation unit based on the prediction result by said prediction unit. An image having a gradient in the values of block pixels is encoded at a high efficiency by an image processing apparatus which includes a division unit for dividing an image into block pixels to be encoded, a generation unit for generating parameters defining a plane based on values of first block pixels and values indicating positions of the block pixels to be encoded and a plane encoding unit for encoding difference values between the values of the block pixels indicated by the plane defined by the parameters and the values of the encoded block pixels.
摘要翻译：通过图像处理装置将图像的编码和解码的编码误差控制在预定范围内，图像处理装置包括用于输入图像数据的输入单元，用于预测由图像数据指示的像素值的预测单元，用于生成通过基于所述预测单元的预测结果将图像数据的像素值转换为+/- e的范围而得到的像素值，以及编码单元，用于对与所述生成单元生成的像素值进行编码的参数基于所述预测单元的预测结果。具有块像素值的梯度的图像由包括用于将图像划分为待编码的块像素的分割单元的图像处理装置以高效率编码，用于基于值生成定义平面的参数的生成单元第一块像素和表示要编码的块像素的位置的值以及用于编码由参数所定义的平面所指示的块像素的值与编码块像素的值之间的差值的平面编码单元。

24. 发明授权

US5960116A Image processing apparatus and method for performing prediction data encoding 失效
标题翻译：用于执行预测数据编码的图像处理装置和方法
公开(公告)号：US5960116A
公开(公告)日：1999-09-28
申请号：US742213
申请日：1996-10-31
申请人： Hiroshi Kajiwara
发明人： Hiroshi Kajiwara
IPC分类号： G06T9/00 , H04N7/26 , H04N7/30 , H04N7/34 , H03M7/40
CPC分类号： H04N19/593 , H04N19/13 , H04N19/60 , H04N19/91
摘要： A prediction error is effectively encoded in case of prediction encoding data by an information processor. A predictor predicts an objective pixel value, and a prediction error generation unit obtains a prediction error from the predictor. A statistics unit calculates, on the basis of a value of the prediction error, a statistical quantity of generation frequency in a plurality of cases corresponding to the value. A convertor converts the value of the prediction error on the basis of the statistical quantity, and an entropy encoder entropy encodes the converted prediction error.
摘要翻译：在由信息处理器预测编码数据的情况下，预测误差被有效地编码。预测器预测目标像素值，并且预测误差生成单元从预测器获得预测误差。统计单元基于预测误差的值，计算与该值对应的多个情况下的生成频率的统计量。转换器基于统计量转换预测误差的值，并且熵编码器熵对转换的预测误差进行编码。

25. 发明授权

US5945930A Data processing apparatus 失效
标题翻译：数据处理装置
公开(公告)号：US5945930A
公开(公告)日：1999-08-31
申请号：US549070
申请日：1995-10-27
申请人： Hiroshi Kajiwara
发明人： Hiroshi Kajiwara
IPC分类号： G06T9/00 , H03M7/30 , H03M7/40 , H03M7/42 , H04N1/41 , H04N5/926 , H04N19/423 , H04N19/60 , H04N19/625 , H04N19/85 , H04N19/91 , H04N19/93 , H04N5/00
CPC分类号： H04N5/9264 , H03M7/42 , H04N19/126 , H04N19/60 , H04N19/124
摘要： A data processing apparatus has a decoder for decoding coded data subjected to first entropy coding into a DCT (discrete cosine transform) coefficient in discrete cosine transform coding, and an encoder for conducting second entropy coding on the DCT coefficient obtained by the decoder.
摘要翻译：数据处理装置具有用于将经过第一熵编码的编码数据解码为离散余弦变换编码中的DCT（离散余弦变换）系数的解码器和用于对由解码器获得的DCT系数进行第二熵编码的编码器。

26. 发明授权

US08213729B2 Multidimensional data encoding apparatus and decoding apparatus, and control method thereof 有权
标题翻译：多维数据编码装置及解码装置及其控制方法
公开(公告)号：US08213729B2
公开(公告)日：2012-07-03
申请号：US12062907
申请日：2008-04-04
申请人： Hiroshi Kajiwara
发明人： Hiroshi Kajiwara
IPC分类号： G06K9/36
CPC分类号： H04N1/64 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/593 , H04N19/60 , H04N19/91
摘要： The invention losslessly encodes multidimensional data such as a color lookup table in which neighboring elements in a space have high correlations, by a simple arrangement at a high compression ratio. To this end, a multidimensional data input unit inputs data of an X-Y plane in an order of Z=0, 1, 2, . . . from a lookup table expressed by three-dimensional X-, Y-, and Z-coordinates. An inter-plane difference generation unit calculates differences D between elements of two neighboring planes, and outputs the calculation result as two-dimensional inter-plane differences. A prediction error generation unit considers data Di of interest in the inter-plane differences D as an element of two-dimensional data, and outputs a difference e from a predicted value p, which is obtained with reference to already encoded data, to a prediction error encoding unit. The prediction error encoding unit generates and outputs a codeword from the inputted difference e.
摘要翻译：本发明通过在高压缩比下的简单布置无损地编码多维数据，例如颜色查找表，其中空间中的相邻元素具有高相关性。为此，多维数据输入单元以Z = 0,1,2，...的顺序输入X-Y平面的数据。。。从由三维X，Y和Z坐标表示的查找表。平面间差产生单元计算两个相邻平面的元素之间的差D，并将计算结果输出为二维平面间差。预测误差生成单元将平面间差D中的感兴趣的数据Di作为二维数据的要素，并将与参照已编码数据获得的预测值p的差E输出到预测错误编码单位。预测误差编码单元从输入的差分e生成并输出码字。

27. 发明申请

US20090208125A1 IMAGE ENCODING APPARATUS AND METHOD OF CONTROLLING THE SAME 有权
标题翻译：图像编码装置及其控制方法
公开(公告)号：US20090208125A1
公开(公告)日：2009-08-20
申请号：US12364863
申请日：2009-02-03
申请人： Hiroshi Kajiwara
发明人： Hiroshi Kajiwara
IPC分类号： G06K9/46
CPC分类号： G06K9/00456 , H04N1/3333 , H04N1/41 , H04N2201/33357
摘要： This invention provides an apparatus which re-encodes encoded image data to generate encoded data at a higher compression ratio while suppressing any increase in the load of re-encoding. A decoder decodes each block stored in a storage, stores the decoding result in a buffer, and stores, in a holding unit, block information representing the location of the encoded data of each block in the storage. A discrimination unit discriminates a text area in the decoded image data. The image in the text area undergoes binarization and then character image data encoding. A fill-up unit replaces the value of a character/line art pixel in the text area with the average of non-character/line art pixel values. A re-encoder encodes the blocks after replacement. Inside the text area, a selector selects and outputs encoded data generated by the re-encoder. Outside the text area, the selector selects and outputs encoded data in the storage.
摘要翻译：本发明提供了一种对编码图像数据进行重新编码以在更高压缩比下生成编码数据同时抑制重新编码的负载的任何增加的装置。解码器解码存储在存储器中的每个块，将解码结果存储在缓冲器中，并将表示每个块的编码数据的位置的块信息存储在存储单元中。识别单元鉴别解码图像数据中的文本区域。文本区域中的图像经过二值化，然后进行字符图像数据编码。填充单元将文本区域中的字符/线条像素的值替换为非字符/线条艺术像素值的平均值。重新编码器在更换后对块进行编码。在文本区域内，选择器选择并输出由编码器生成的编码数据。在文本区域之外，选择器选择并输出存储器中的编码数据。

28. 发明申请

US20080285867A1 MULTIDIMENSIONAL DATA ENCODING APPARATUS AND DECODING APPARATUS, AND CONTROL METHOD THEREOF 有权
标题翻译：多维数据编码装置及其解码装置及其控制方法
公开(公告)号：US20080285867A1
公开(公告)日：2008-11-20
申请号：US12062907
申请日：2008-04-04
申请人： Hiroshi Kajiwara
发明人： Hiroshi Kajiwara
IPC分类号： G06K9/36
CPC分类号： H04N1/64 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/593 , H04N19/60 , H04N19/91
摘要： The invention losslessly encodes multidimensional data such as a color lookup table in which neighboring elements in a space have high correlations, by a simple arrangement at a high compression ratio. To this end, a multidimensional data input unit inputs data of an X-Y plane in an order of Z=0, 1, 2, . . . from a lookup table expressed by three-dimensional X-, Y-, and Z-coordinates. An inter-plane difference generation unit calculates differences D between elements of two neighboring planes, and outputs the calculation result as two-dimensional inter-plane differences. A prediction error generation unit considers data Di of interest in the inter-plane differences D as an element of two-dimensional data, and outputs a difference e from a predicted value p, which is obtained with reference to already encoded data, to a prediction error encoding unit. The prediction error encoding unit generates and outputs a codeword from the inputted difference e.
摘要翻译：本发明通过在高压缩比下的简单布置无损地编码多维数据，例如颜色查找表，其中空间中的相邻元素具有高相关性。为此，多维数据输入单元以Z = 0,1,2，...的顺序输入X-Y平面的数据。。。从由三维X，Y和Z坐标表示的查找表。平面间差产生单元计算两个相邻平面的元素之间的差D，并将计算结果输出为二维平面间差。预测误差生成单元将平面间差D中的感兴趣的数据Di作为二维数据的要素，并将与参照已编码数据获得的预测值p的差e输出到预测错误编码单位。预测误差编码单元从输入的差分e生成并输出码字。

29. 发明授权

US06909811B1 Image processing apparatus and method and storage medium storing steps realizing such method 失效
标题翻译：图像处理装置和方法以及存储步骤实现这种方法
公开(公告)号：US06909811B1
公开(公告)日：2005-06-21
申请号：US09259252
申请日：1999-03-01
申请人： Hiroshi Kajiwara , Makoto Sato
发明人： Hiroshi Kajiwara , Makoto Sato
IPC分类号： H04N7/26 , H04N7/30 , G06K9/46
CPC分类号： H04N19/63 , H04N19/10 , H04N19/13 , H04N19/46 , H04N19/60 , H04N19/61 , H04N19/91
摘要： Hierarchical encoding techniques allowing a good compression efficiency and allowing to quickly recognize the outline of an image from a fraction of encoded data. In order to realize such techniques, an image processing apparatus has a generating unit for generating a plurality of coefficients representative of an image, a variable length encoding unit for encoding each of the plurality of coefficients generated by the generating unit, and a hierarchical output unit for distributing each bit of variable length encoded data corresponding to each coefficient and obtained through variable length encoding by the variable length encoding unit, to a plurality of bit planes each corresponding to a level of each bit, and hierarchically and sequentially outputting the plurality of bit planes.
摘要翻译：分层编码技术允许良好的压缩效率并允许从编码数据的一小部分快速识别图像的轮廓。为了实现这样的技术，图像处理装置具有用于生成表示图像的多个系数的生成单元，对由生成单元生成的多个系数中的每一个进行编码的可变长度编码单元，以及分级输出单元用于将与通过可变长度编码单元的可变长度编码相对应的每个系数的可变长度编码数据的每一位分配给分别对应于每个位的电平的多个位平面，并且分层并顺序地输出多个位飞机

30. 发明授权

US06711295B2 Encoding apparatus and method, and storage medium 失效
标题翻译：编码装置和方法以及存储介质
公开(公告)号：US06711295B2
公开(公告)日：2004-03-23
申请号：US09412431
申请日：1999-10-05
申请人： Tadayoshi Nakayama , Hiroshi Kajiwara , Takeshi Yamazaki
发明人： Tadayoshi Nakayama , Hiroshi Kajiwara , Takeshi Yamazaki
IPC分类号： G06K936
CPC分类号： H03M7/46 , H04N19/593 , H04N19/91
摘要： The primary objective of the present invention is the efficient performance of Golomb-Rice encoding. To achieve this objective, an encoding method comprises the steps of receiving image data for each predetermined unit, separately employing K types of k parameters to perform Golomb-Rice coding for the image data for each predetermined unit, and generating K types of Golomb-Rice coded data, holding the K types of Golomb-Rice coded data obtained at the generation step, based on the image data, selecting one of the k parameters for each predetermined unit, and employing the selected k parameter to select and output one of the K types of Golomb-Rice coded data that are being held.
摘要翻译：本发明的主要目的是Golomb-Rice编码的有效性能。为了实现该目的，编码方法包括以下步骤：分别使用K种k个参数来接收每个预定单元的图像数据，以对每个预定单元执行图像数据的Golomb-Rice编码，并生成K型Golomb-Rice 编码数据，保存在生成步骤中获得的K型Golomb-Rice编码数据，基于图像数据，为每个预定单元选择k个参数之一，并采用所选择的k参数来选择和输出K Golomb-Rice编码数据的类型。

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