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    • 1. 发明授权
    • Image data compression apparatus, decompression apparatus, compressing method, decompressing method, and storage medium
    • 图像数据压缩装置,解压缩装置,压缩方法,解压缩方法和存储介质
    • US08411976B2
    • 2013-04-02
    • US12887014
    • 2010-09-21
    • Junichi Odagiri
    • Junichi Odagiri
    • G06K9/46G06K9/36
    • H04N19/42H04N19/105H04N19/182H04N19/593
    • An image compression apparatus includes: a line memory unit for holding pixel values for at least one immediately previous line in the lines to be processed of an image to be compressed; a division unit for dividing pixels of the line to be processed into 2n-pixel blocks; a first estimation value calculation unit for extrapolation-estimating the 2n-1-th pixel and the 2n-th pixel in the blocks divided, and obtaining an estimated value in processing for the first hierarchical level; a second estimation value calculation unit for interpolation-estimating certain pixels and obtaining an estimated value in the processing for the second hierarchical level through the processing for the n-th hierarchical level; and an estimation coding unit for obtaining an estimation error from the estimated value, converting the estimation error into a quantization number, converting the quantization number into a variable length code, and obtaining a compression code.
    • 一种图像压缩装置包括:行存储单元,用于保持要压缩的图像的要处理的行中的至少一个紧接的前一行的像素值; 划分单元,用于将要处理的行的像素划分成2n像素块; 第一估计值计算单元,用于外推估计被划分的块中的第2n-1个像素和第2n个像素,并且获得用于第一层级的处理中的估计值; 第二估计值计算单元,用于内插估计某些像素,并通过第n层级的处理获得用于第二层级的处理中的估计值; 以及估计编码单元,用于从估计值获得估计误差,将估计误差转换为量化数,将量化数转换成可变长度码,并获得压缩码。
    • 2. 发明申请
    • Method of converting structured data
    • 转换结构化数据的方法
    • US20080091699A1
    • 2008-04-17
    • US11905304
    • 2007-09-28
    • Satoshi NakashimaJunichi OdagiriShigeru YoshidaTakuroh Yamaguchi
    • Satoshi NakashimaJunichi OdagiriShigeru YoshidaTakuroh Yamaguchi
    • G06F17/30
    • G06F17/227G06F17/2247
    • A structured data conversion device is designed to convert a set of first structured data into a set of second structured data that is described in a language different from that of the first structured data, and comprises: an inverse conversion information creation unit extracting data as inverse conversion information from the first structured data, the data that is extracted being deleted when the first structured data is converted into the second structured data and being necessary when the second structured data is inversely converted into the first structured data; and an inverse conversion information storing unit embedding in the second structured data the inverse conversion information when the first structured data is converted into the second structured data.
    • 结构化数据转换装置被设计成将一组第一结构化数据转换成以与第一结构化数据不同的语言描述的一组第二结构化数据,并且包括:反转换信息创建单元,将数据提取为反向 来自第一结构化数据的转换信息,当第一结构化数据被转换成第二结构化数据时被提取的数据被删除,并且当第二结构化数据被反向转换成第一结构化数据时是需要的; 以及逆变换信息存储单元,当所述第一结构化数据被转换为所述第二结构化数据时,将所述第二结构化数据嵌入所述逆变换信息。
    • 3. 发明授权
    • Image data compression apparatus and decoding apparatus
    • 图像数据压缩装置和解码装置
    • US08306341B2
    • 2012-11-06
    • US12568099
    • 2009-09-28
    • Junichi OdagiriShigeru Yoshida
    • Junichi OdagiriShigeru Yoshida
    • G06K9/36H04N11/02
    • H04N19/635H04N19/122H04N19/132H04N19/61H04N19/63
    • An image data compression apparatus includes: a filter coefficient calculation unit to perform a filter process to separate pixels extracted in accordance with a one-dimensional subband coding into low- and high-frequency components, and to calculate coefficient values of respective filter coefficients; prediction units to perform different predictions respectively for the calculated coefficient values; a predicted coefficient value calculation unit to calculate predicted coefficient values to be used for posterior predictions by calculating each from at least one of predicted values and from corresponding at least one of the calculated coefficient values; a memory unit to hold the predicted coefficient values calculated by the predicted coefficient value calculation unit; and a compression coding unit to calculate a difference between each predicted value and corresponding each coefficient value, and to perform coding after quantizing the difference, or to perform coding on the basis of the difference.
    • 图像数据压缩装置包括:滤波器系数计算单元,用于执行滤波处理,以将根据一维子带编码提取的像素分离成低频和高频分量,并计算各滤波器系数的系数值; 预测单元对所计算的系数值分别执行不同的预测; 预测系数值计算单元,通过从预测值中的至少一个和相应的所计算的系数值中的至少一个计算每一个来计算用于后验预测的预测系数值; 存储单元,用于保持由预测系数值计算单元计算出的预测系数值; 以及压缩编码单元,用于计算每个预测值和对应的每个系数值之间的差,并且在量化该差之后执行编码,或者基于该差进行编码。
    • 4. 发明申请
    • VIDEO COMPRESSION ENCODING/DECOMPRESSION DEVICE, VIDEO COMPRESSION ENCODING/DECOMPRESSION PROGRAM AND VIDEO GENERATION/OUTPUT DEVICE
    • 视频压缩编码/解码设备,视频压缩编码/解码程序和视频生成/输出设备
    • US20100195724A1
    • 2010-08-05
    • US12759509
    • 2010-04-13
    • Shigeru YoshidaJunichi Odagiri
    • Shigeru YoshidaJunichi Odagiri
    • H04N7/12H04N5/93
    • H04N19/507H04N19/85
    • When a periodic pattern is not included in image data 210, a prediction error encoding unit 204 outputs the variable-length code of a prediction error quantization value 214 generated by prediction encoding as compressed data 215. When the periodic pattern is included in the image data 210, a periodic pattern encoding unit 208 outputs only information about the periodic pattern as the compressed data 215, while the output of the prediction error encoding unit is stopped. On the decompression side, while the copy instruction of a pixel value before one cycle from the compressed data is not detected, the decompression operation in a normal prediction encoding system is executed. When the instruction is detected, the pixel value one cycle before, internally stored is copied and outputted.
    • 当图像数据210中不包括周期性图案时,预测误差编码单元204将通过预测编码生成的预测误差量化值214的可变长度码输出为压缩数据215.当周期性图案包括在图像数据中时 如图210所示,周期性图案编码单元208仅输出关于周期性图案的信息作为压缩数据215,同时预测误差编码单元的输出停止。 在解压缩侧,当没有检测到来自压缩数据的一个周期之前的像素值的复制指令时,执行正常预测编码系统中的解压缩操作。 当检测到指令时,复制并输出内部存储的一个周期的像素值。
    • 5. 发明申请
    • IMAGE DATA COMPRESSION APPARATUS AND DECODING APPARATUS
    • 图像数据压缩装置和解码装置
    • US20100080479A1
    • 2010-04-01
    • US12568099
    • 2009-09-28
    • Junichi ODAGIRIShigeru YOSHIDA
    • Junichi ODAGIRIShigeru YOSHIDA
    • G06K9/36
    • H04N19/635H04N19/122H04N19/132H04N19/61H04N19/63
    • An image data compression apparatus includes: a filter coefficient calculation unit to perform a filter process to separate pixels extracted in accordance with a one-dimensional subband coding into low- and high-frequency components, and to calculate coefficient values of respective filter coefficients; prediction units to perform different predictions respectively for the calculated coefficient values; a predicted coefficient value calculation unit to calculate predicted coefficient values to be used for posterior predictions by calculating each from at least one of predicted values and from corresponding at least one of the calculated coefficient values; a memory unit to hold the predicted coefficient values calculated by the predicted coefficient value calculation unit; and a compression coding unit to calculate a difference between each predicted value and corresponding each coefficient value, and to perform coding after quantizing the difference, or to perform coding on the basis of the difference.
    • 图像数据压缩装置包括:滤波器系数计算单元,用于执行滤波处理,以将根据一维子带编码提取的像素分离成低频和高频分量,并计算各滤波器系数的系数值; 预测单元对所计算的系数值分别执行不同的预测; 预测系数值计算单元,通过从预测值中的至少一个和相应的所计算的系数值中的至少一个计算每一个来计算用于后验预测的预测系数值; 存储单元,用于保持由预测系数值计算单元计算出的预测系数值; 以及压缩编码单元,用于计算每个预测值和对应的每个系数值之间的差,并且在量化该差之后执行编码,或者基于该差进行编码。
    • 6. 发明申请
    • IMAGE COMPRESSION DEVICE, COMPRESSING METHOD, STORAGE MEDIUM, IMAGE DECOMPRESSION DEVICE, DECOMPRESSING METHOD, AND STORAGE MEDIUM
    • 图像压缩装置,压缩方法,存储介质,图像解码装置,解压缩方法和存储介质
    • US20090052790A1
    • 2009-02-26
    • US12268057
    • 2008-11-10
    • Junichi OdagiriHironori YahagiShigeru Yoshida
    • Junichi OdagiriHironori YahagiShigeru Yoshida
    • H04N7/26
    • H04N19/90H04N19/124H04N19/126H04N19/14H04N19/182H04N19/50
    • An image compression device having a prediction unit for predicting a value of a compressing target pixel from peripheral values, and quantizing prediction error between a prediction value of the prediction unit and a value of an actual pixel in a predetermined quantizing step, comprising: a specific pixel level difference evaluation unit sequentially calculating the difference value between the level values as a sum of the prediction values corresponding to each of the compressed pixel immediately before the compressing target pixel and peripheral compressed pixels adjacent to the pixel and the quantization value of the prediction error, and evaluating the sameness of the difference value; and a quantization switching unit controlling the quantization in the quantizing step more precise than the quantizing step used when the difference value continuously indicates the same value as a result of the evaluation by the specific pixel level difference evaluation unit.
    • 一种图像压缩装置,具有预测单元,用于从外围值预测压缩对象像素的值,并且在预定量化步骤中量化预测单元的预测值与实际像素的值之间的预测误差,包括: 像素电平差分评估单元,其顺序地计算电平值之间的差值,作为与压缩目标像素之前的压缩像素和与像素相邻的外围压缩像素之间的每个压缩像素的预测值的和与预测误差的量化值 ,并评估差值的相同性; 以及量化切换单元,其在与所述特定像素级差分评估单元的评估结果不同的值连续指示相同的值时,比量化步骤更精确地控制量化步长。
    • 7. 发明申请
    • Document conversion and use system
    • 文件转换和使用系统
    • US20080098299A1
    • 2008-04-24
    • US11905312
    • 2007-09-28
    • Junichi OdagiriSatoshi NakashimaShigeru YoshidaTakuroh Yamaguchi
    • Junichi OdagiriSatoshi NakashimaShigeru YoshidaTakuroh Yamaguchi
    • G06F17/00
    • G06F17/227G06F17/2247
    • A document conversion and use system which converts a first structured document into a second structured document different in structure from the first structured document, comprising: a template storage unit storing a template indicating the structure of the second structured document; a structure specification unit for reading out the template from the template storage unit and causing a user to specify an element or an element content constituting the template; a correspondence definition specification unit for causing the user to define the correspondence definition specification indicating the correspondence between the element in the first structured document and the element in the template; and an unit for analyzing the template structure to specify the element or the element content specified by the structure specification unit, searching for the element defined by the correspondence definition starting from the element or the element content, and performing conversion processing according to the search result.
    • 一种文档转换和使用系统,其将第一结构化文档转换成与第一结构化文档不同结构的第二结构化文档,包括:模板存储单元,存储指示第二结构化文档的结构的模板; 结构指定单元,用于从模板存储单元读出模板并使用户指定构成模板的元素或元素内容; 通信定义指定单元,用于使用户定义指示第一结构化文档中的元素与模板中的元素之间的对应关系的对应定义规范; 以及用于分析模板结构以指定由结构指定单元指定的元素或元素内容的单元,从元素或元素内容开始搜索由对应定义定义的元素,并且根据搜索结果执行转换处理 。
    • 10. 发明授权
    • Image compression device, compressing method, storage medium, image decompression device, decompressing method, and storage medium
    • 图像压缩装置,压缩方法,存储介质,图像解压缩装置,解压缩方法和存储介质
    • US08045814B2
    • 2011-10-25
    • US12268057
    • 2008-11-10
    • Junichi OdagiriHironori YahagiShigeru Yoshida
    • Junichi OdagiriHironori YahagiShigeru Yoshida
    • G06K9/46
    • H04N19/90H04N19/124H04N19/126H04N19/14H04N19/182H04N19/50
    • An image compression device having a prediction unit for predicting a value of a compressing target pixel from peripheral values, and quantizing prediction error between a prediction value of the prediction unit and a value of an actual pixel in a predetermined quantizing step, comprising: a specific pixel level difference evaluation unit sequentially calculating the difference value between the level values as a sum of the prediction values corresponding to each of the compressed pixel immediately before the compressing target pixel and peripheral compressed pixels adjacent to the pixel and the quantization value of the prediction error, and evaluating the sameness of the difference value; and a quantization switching unit controlling the quantization in the quantizing step more precise than the quantizing step used when the difference value continuously indicates the same value as a result of the evaluation by the specific pixel level difference evaluation unit.
    • 一种图像压缩装置,具有预测单元,用于从外围值预测压缩对象像素的值,并且在预定量化步骤中量化预测单元的预测值与实际像素的值之间的预测误差,包括: 像素电平差分评估单元,其顺序地计算电平值之间的差值,作为与压缩目标像素之前的压缩像素和与像素相邻的外围压缩像素之间的每个压缩像素的预测值的和与预测误差的量化值 ,并评估差值的相同性; 以及量化切换单元,其在与所述特定像素级差分评估单元的评估结果不同的值连续指示相同的值时,比量化步骤更精确地控制量化步长。