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31. 发明授权

US06560365B1 Decoding apparatus and method 失效
标题翻译：解码装置和方法
公开(公告)号：US06560365B1
公开(公告)日：2003-05-06
申请号：US09413022
申请日：1999-10-06
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： H04N1/41 , H04N19/423 , H04N19/593 , H04N19/90 , H04N19/91
摘要： It is one objective of the present invention to provide an arrangement for employing peripheral pixels to perform fast decoding, and in particular to perform fast decoding while taking into account the timing whereat the values of peripheral pixels are obtained. To achieve this objective, a decoding apparatus, which decodes each pixel based on a plurality of peripheral pixels, comprises: a plurality of memories, each of which corresponds to a set of first and second statuses that are obtained from a specific pixel and which is used to store a predetermined parameter that is required for decoding; determination means for determining read addresses in the plurality of memories based on a third status obtained from peripheral pixels other than the predetermined peripheral pixel; and selection means for receiving the first and the second statuses obtained from the predetermined pixel and for selecting one of the plurality of memories in accordance with the first and second statuses that are received.
摘要翻译：本发明的一个目的是提供一种采用周边像素执行快速解码的装置，特别是在考虑获得周边像素的值的定时的同时进行快速解码。为了实现这一目标，基于多个周边像素解码每个像素的解码装置包括：多个存储器，每个存储器对应于从特定像素获得的一组第一和第二状态，用于存储解码所需的预定参数; 确定装置，用于基于从除了所述预定周边像素之外的周边像素获得的第三状态来确定所述多个存储器中的读取地址; 以及选择装置，用于接收从预定像素获得的第一和第二状态，并根据接收的第一和第二状态来选择多个存储器中的一个。

32. 发明授权

US08260072B2 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：US08260072B2
公开(公告)日：2012-09-04
申请号：US12533157
申请日：2009-07-31
申请人： Hiroshi Kajiwara , Takeshi Yamazaki
发明人： Hiroshi Kajiwara , Takeshi Yamazaki
IPC分类号： G06K9/36
CPC分类号： H04N19/194 , H04N19/124 , H04N19/13 , H04N19/152 , H04N19/176 , H04N19/18
摘要： This invention provides a technique of easily encoding image data to generate encoded data having high image quality within a target code amount using a small memory capacity by image encoding processing of performing frequency transform and quantization of each pixel block. A frequency transform unit separates image data into low frequency band data and high frequency band data. A coefficient quantizing unit, coefficient encoder, and code amount controller operate to encode the high frequency band data within a predetermined amount. When the encoding processing of the high frequency band data has ended, the quantization parameter of the low frequency band data is set based on the generated code amount of the high frequency band data. A coefficient quantizing unit, coefficient encoder, code amount detector, and quantization parameter updating unit operate to encode the low frequency band data into codes within a low frequency band target code amount.
摘要翻译：本发明提供一种技术，通过对每个像素块执行频率变换和量化的图像编码处理，通过使用小的存储容量来容易地编码图像数据以产生具有目标代码量内的高图像质量的编码数据。频率变换单元将图像数据分离成低频带数据和高频带数据。系数量化单元，系数编码器和代码量控制器操作以在预定量内对高频带数据进行编码。当高频带数据的编码处理结束时，基于高频带数据的生成代码量来设定低频带数据的量化参数。系数量化单元，系数编码器，代码量检测器和量化参数更新单元用于将低频带数据编码成低频带目标代码量内的代码。

33. 发明授权

US07822282B2 Moving image coding apparatus, moving image decoding apparatus, control method therefor, computer program, and computer-readable storage medium 有权
标题翻译：运动图像编码装置，运动图像解码装置，其控制方法，计算机程序和计算机可读存储介质
公开(公告)号：US07822282B2
公开(公告)日：2010-10-26
申请号：US10587900
申请日：2005-03-11
申请人： Hiroshi Kajiwara , Mitsuru Maeda , Masaki Suzuki , Hiroki Kishi
发明人： Hiroshi Kajiwara , Mitsuru Maeda , Masaki Suzuki , Hiroki Kishi
IPC分类号： G06K9/46
CPC分类号： H04N19/64 , H04N19/169 , H04N19/17 , H04N19/184 , H04N19/46 , H04N19/61 , H04N19/63
摘要： This technique prevents errors from being gradually accumulated on the decoding side, while maintaining high scalability, even when transformation to subbands as a plurality of frequency components is used for moving image coding. The image data of one input frame is decomposed into a plurality of subbands having different frequency components by a discrete wavelet transformation unit. A lower bitplane coding unit codes, for each bitplane, predetermined lower bits of each coefficient data of a subband LL and the coefficient data of subbands other than the subband LL. The data of the upper bits of the subband LL is stored in a frame memory. A motion vector detection unit detects a predicted value and motion vector on the basis of the decoded data of the subband LL in a preceding frame. A subtracter obtains the difference between the detected predicted value and the current frame.
摘要翻译：即使在将多个频率成分的子带变换为运动图像编码的情况下，也能够在维持高的可扩展性的同时，防止错误逐渐积累在解码侧。一个输入帧的图像数据通过离散小波变换单元被分解成具有不同频率分量的多个子带。低位平面编码单元针对每个位平面编码子带LL的每个系数数据的预定低位和子带LL以外的子带的系数数据。子带LL的高位的数据被存储在帧存储器中。运动矢量检测单元基于前一帧中的子带LL的解码数据来检测预测值和运动矢量。减法器获得检测到的预测值与当前帧之间的差值。

34. 发明授权

US07574063B2 Image coding method and apparatus 失效
标题翻译：图像编码方法及装置
公开(公告)号：US07574063B2
公开(公告)日：2009-08-11
申请号：US10895385
申请日：2004-07-21
申请人： Hiroshi Kajiwara , Hiroki Kishi
发明人： Hiroshi Kajiwara , Hiroki Kishi
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： H04N19/192 , H04N19/115 , H04N19/132 , H04N19/146 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/63 , H04N19/647
摘要： To reduce the computation cost of rate/distortion optimization in image compression, the rate/distortion gradient of a frame of interest is classified to m categories. A category information creating unit acquires a threshold λ for a preceding frame as a predictive value λ′ for the frame of interest that is to be coded, and further finely segments a category in which the predictive value λ′ is included. A code amount is then calculated for each of n categories that include the predictive value λ′. A code sequence forming unit selects a category having a target rate, and searches for a threshold between an upper and a lower limit value of the category. A value (S) at the end of the processing is selected as the threshold λ, and a code sequence is formed by using the threshold λ.
摘要翻译：为了降低图像压缩中速率/失真优化的计算成本，将感兴趣的帧的速率/失真梯度分类为m个类别。类别信息创建单元获取用于前一帧的阈值λ作为要编码的关注帧的预测值λ'，并且进一步精细地分割其中包含预测值λ'的类别。然后为包括预测值λ'的n个类别中的每一个计算代码量。代码序列形成单元选择具有目标速率的类别，并且搜索类别的上限值和下限值之间的阈值。选择处理结束时的值（S）作为阈值λ，并且通过使用阈值λ形成代码序列。

35. 再颁专利

USRE39984E1 Image encoding based on judgement on prediction error 有权
公开(公告)号：USRE39984E1
公开(公告)日：2008-01-01
申请号：US09827925
申请日：2001-04-09
申请人： Hiroshi Kajiwara
发明人： Hiroshi Kajiwara
IPC分类号： G06K9/36 , H04N7/12 , H03M7/34
CPC分类号： H04N19/91 , H04N19/593 , H04N19/60
摘要： There is provided an image encode encoding apparatus which comprises a generation means for generating a prediction error from an encode encoding target pixel value and a prediction value of the encode encoding target pixel value, a judgment means for generating a generation frequency distribution of the prediction error to judge whether or not the generation frequency distribution is discrete and an entropy encode encoding means for changing encode encoding data corresponding to the prediction error and performing entropy encoding on the obtained encode encoding data, in accordance with a judged result by the judgment means. Therefore, the encoding can be effectively performed even on such the image data having the discrete pixel value as in a CG image, a limited-color image or the like.

36. 发明授权

US07302105B2 Moving image coding apparatus, moving image decoding apparatus, and methods therefor 失效
标题翻译：运动图像编码装置，运动图像解码装置及其方法
公开(公告)号：US07302105B2
公开(公告)日：2007-11-27
申请号：US10620604
申请日：2003-07-17
申请人： Hiroshi Kajiwara
发明人： Hiroshi Kajiwara
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： G06T9/007 , H04N19/112 , H04N19/122 , H04N19/647
摘要： There are provided a moving image coding apparatus and moving image decoding apparatus which allow efficient decoding of an interlaced image from the coded data of a progressive image, and methods for the apparatuses. Noninterlaced moving image data is input from a moving image data input unit (101). Two consecutive frames are discriminated by a switch (102). A line interleaving unit (103) then generates new image data by alternately arranging the line data of the respective frames upon changing the order. A discrete wavelet transform unit (104) performs two-dimensional discrete wavelet transform for this image data to decompose it into seven subbands. Each subband is then coded.
摘要翻译：提供了一种运动图像编码装置和运动图像解码装置，其能够对逐行图像的编码数据进行隔行扫描图像的有效解码，以及用于该装置的方法。从运动图像数据输入单元（101）输入非隔行扫描运动图像数据。两个连续的帧被开关（102）区分开。然后，行交错单元（103）通过在改变顺序时交替地布置各个帧的行数据来生成新的图像数据。离散小波变换单元（104）对该图像数据执行二维离散小波变换以将其分解成七个子带。然后对每个子带进行编码。

37. 发明授权

US07013050B2 Image encoding apparatus and method, program code, and storage medium 有权
标题翻译：图像编码装置和方法，程序代码和存储介质
公开(公告)号：US07013050B2
公开(公告)日：2006-03-14
申请号：US10176583
申请日：2002-06-24
申请人： Hiroshi Kajiwara
发明人： Hiroshi Kajiwara
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： H04N19/59 , H04N19/126 , H04N19/127 , H04N19/132 , H04N19/162 , H04N19/17 , H04N19/176 , H04N19/18 , H04N19/63 , H04N19/647
摘要： Image data is decomposed into subbands and quantized by a discrete wavelet transformer (102) and coefficient quantizer (103). On the other hand, a high-resolution region information input unit (105) inputs region designation information H(x, y) that designates a region which requires a high resolution, and a mask generator (106) obtains, based on H(x, y), mask information M(S, x, y) indicating if coefficients of HL2, LH2, and HH2 are generated with reference to pixels of the high-resolution region. A coefficient correction unit (104) corrects the quantized coefficients of respective subbands with reference to M(S, x, y) if subband S is one of HL2, LH2, and HH2, and does not correct if subband S is other than HL2, LH2, and HH2.
摘要翻译：图像数据被分解为子带，并由离散小波变换器（102）和系数量化器（103）量化。另一方面，高分辨率区域信息输入单元（105）输入指定需要高分辨率的区域的区域指定信息H（x，y），掩模发生器（106）基于H（x ，y），表示参照高分辨率区域的像素生成HL 2，LH 2和HH 2的系数的掩码信息M（S，x，y）。如果子带S是HL 2，LH 2和HH 2之一，则系数校正单元（104）参考M（S，x，y）校正各个子带的量化系数，并且如果子带S是其他比HL 2，LH 2和HH 2。

38. 发明授权

US06917716B2 Image processing apparatus and method and storage medium 失效
标题翻译：图像处理装置及方法及存储介质
公开(公告)号：US06917716B2
公开(公告)日：2005-07-12
申请号：US09730389
申请日：2000-12-06
申请人： Hiroshi Kajiwara , Makoto Sato , Hiroki Kishi
发明人： Hiroshi Kajiwara , Makoto Sato , Hiroki Kishi
IPC分类号： H04N19/60 , H03M7/30 , H04N1/41 , H04N19/423 , H04N19/46 , H04N19/63 , H04N19/70 , H04N19/88 , H04N19/91 , G06K9/36 , G06K9/46
CPC分类号： H04N19/36 , H04N19/186 , H04N19/1883 , H04N19/63 , H04N19/64 , H04N19/70
摘要： A system which can efficiently compress any one of a multivalue image and a binary image and can preferably keep a high picture quality is provided. To accomplish this object, the system has means for generating conversion coefficients of M values by converting input image data by a first system, means for generating conversion coefficients of N values (N>M) by converting the input image data by a second system and means for outputting first information showing a position where a significant conversion coefficient exists in a block constructed by the conversion coefficients of M values or the conversion coefficients of N values and second information showing the significant conversion coefficient. Block division information which is generated by a block dividing process as an element technique of the image encoding system is efficiently entropy encoded. To accomplish it, the system has means for outputting division information showing whether each of a plurality of blocks including an encoding subject block has further been divided into a plurality of blocks or not and means for entropy encoding the division information corresponding to the encoding subject block on the basis of a presumption probability according to a division situation of a neighboring block of the encoding subject block.
摘要翻译：可以提供可以有效地压缩多值图像和二值图像中的任何一个并且可以优选地保持高图像质量的系统。为了实现该目的，该系统具有通过第一系统转换输入图像数据来产生M值的转换系数的装置，用于通过用第二系统转换输入图像数据来产生N个值（N> M）的转换系数的装置，以及用于输出表示在由M值的转换系数或N值的转换系数构成的块中存在显着转换系数的位置的第一信息的装置，以及表示显着转换系数的第二信息。通过作为图像编码系统的元素技术的块分割处理生成的块分割信息被有效地熵编码。为了完成它，系统具有输出分割信息的装置，该分割信息表示包括编码对象块的多个块中的每一个是否进一步被划分成多个块，以及用于对与编码对象块对应的划分信息进行熵编码的装置基于根据编码对象块的相邻块的分割情况的推测概率。

39. 发明申请

US20050100226A1 Image coding method and apparatus 失效
标题翻译：图像编码方法及装置
公开(公告)号：US20050100226A1
公开(公告)日：2005-05-12
申请号：US10895385
申请日：2004-07-21
申请人： Hiroshi Kajiwara , Hiroki Kishi
发明人： Hiroshi Kajiwara , Hiroki Kishi
IPC分类号： G06K9/36 , H04N7/26
CPC分类号： H04N19/192 , H04N19/115 , H04N19/132 , H04N19/146 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/63 , H04N19/647
摘要： There are provided an image coding method and apparatus which can properly reduce the computation cost required for rate/distortion optimization processing in image coding at the time of image compression. First of all, the rate/distortion gradient of a frame of interest is classified to m categories. A category information creating unit (101) acquires a threshold λ for a preceding frame from a predictive value storage unit (104) as a predictive value λ′ for the frame of interest when the frame of interest is to be coded, and further finely segments a category in which the predictive value λ′ is included. A code amount is then calculated for each of n categories in which the predictive value λ′ is included. A code sequence forming unit (103) selects a category having a target rate, and searches for a threshold between an upper limit value Tn(x-1) and lower limit value Tn(x) of the category. S at the end of the processing is selected as the threshold λ, and a code sequence is formed by using the threshold λ.
摘要翻译：提供了一种图像编码方法和装置，其可以在图像压缩时适当地降低图像编码中的速率/失真优化处理所需的计算成本。首先，感兴趣的帧的速率/失真梯度被分类为m个类别。类别信息创建单元（101）从预测值存储单元（104）获取用于前一帧的阈值λ，作为要被编码的关注帧的感兴趣帧的预测值λ'，并且进一步细分段包含预测值λ'的类别。然后，对于其中包括预测值λ'的n个类别中的每一个，计算代码量。代码序列形成单元（103）选择具有目标速率的类别，并且搜索类别的上限值Tn（x-1）和下限值Tn（x）之间的阈值。选择处理结束时的S作为阈值λ，并且通过使用阈值λ形成代码序列。

40. 发明授权

US06879727B2 Decoding bit-plane-encoded data using different image quality for display 失效
标题翻译：使用不同的图像质量对位平面编码的数据进行解码以进行显示
公开(公告)号：US06879727B2
公开(公告)日：2005-04-12
申请号：US09818560
申请日：2001-03-28
申请人： Makoto Sato , Hiroshi Kajiwara , Hiroki Kishi
发明人： Makoto Sato , Hiroshi Kajiwara , Hiroki Kishi
IPC分类号： G06T9/00 , H03M7/30 , H03M7/40 , H04N1/41 , H04N19/34 , H04N19/60 , H04N19/63 , H04N19/85 , H04N19/91 , G06K9/36
CPC分类号： H04N19/1883 , H04N19/136 , H04N19/162 , H04N19/17 , H04N19/63
摘要： An image processing apparatus includes an encoding section and a decoding section. The encoding section includes means for encoding an input image to generate encoded data, means for receiving a designation of an image quality for display of the input image, and means for outputting, of the encoded data, encoded data necessary to display the input image at an image quality equal to or higher than the designated image quality. The decoding section includes means for decoding the encoded data output from the encoding section to generate image data, and means for, when an image based on the image data has an image quality higher than the designated image quality, converting the image data into image data having the designated image quality.
摘要翻译：图像处理装置包括编码部分和解码部分。编码部分包括用于编码输入图像以产生编码数据的装置，用于接收用于显示输入图像的图像质量的指定的装置，以及用于将编码数据输出到显示输入图像所需的编码数据的装置等于或高于指定图像质量的图像质量。解码部分包括用于解码从编码部分输出的编码数据以产生图像数据的装置，以及用于当基于图像数据的图像具有高于指定图像质量的图像质量时，将图像数据转换成图像数据的装置具有指定的图像质量。

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