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1. 发明授权

US08351501B2 Method and apparatus for coding image information, method and apparatus for decoding image information, method and apparatus for coding and decoding image information, and system of coding and transmitting image information 有权
标题翻译：用于图像信息编码的方法和装置，用于对图像信息进行解码的方法和装置，用于对图像信息进行编码和解码的方法和装置，以及编码和发送图像信息的系统
公开(公告)号：US08351501B2
公开(公告)日：2013-01-08
申请号：US13370174
申请日：2012-02-09
申请人： Kazushi Sato , Osamu Sunohara , Teruhiko Suzuki , Peter Kuhn , Yoichi Yagasaki , Kuniaki Takahashi
发明人： Kazushi Sato , Osamu Sunohara , Teruhiko Suzuki , Peter Kuhn , Yoichi Yagasaki , Kuniaki Takahashi
IPC分类号： H04B1/66
CPC分类号： H04N19/124 , H04N7/26244 , H04N7/26335 , H04N7/26941 , H04N7/50 , H04N19/126 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/40 , H04N19/44 , H04N19/60 , H04N19/61 , H04N19/625
摘要： An image decoding method is for decoding a bit stream in an image decoding apparatus. The method includes receiving the bit stream and a weight parameter that is added to a luma quantization parameter by an addition operation. The method also includes decoding, in a decoding unit in the image decoding apparatus, the bit stream and generating a chroma component of quantized coefficients. In addition, the method includes performing, in a dequantization unit in the image decoding apparatus, dequantization on the chroma component of quantized coefficients using the chroma quantization parameter calculated on the basis of a luma quantization parameter weighted by the weight parameter.
摘要翻译：图像解码方法是对图像解码装置中的比特流进行解码。该方法包括通过加法运算来接收比特流和加权参数，该加权参数被加到亮度量化参数。该方法还包括在图像解码装置的解码单元中解码比特流并生成量化系数的色度分量。此外，该方法包括在图像解码装置的去量化单元中，使用基于由权重参数加权的亮度量化参数计算的色度量化参数，对量化系数的色度分量进行逆量化。

2. 发明授权

US07515636B2 Image information conversion apparatus and image information conversion method 失效
标题翻译：图像信息转换装置和图像信息转换方法
公开(公告)号：US07515636B2
公开(公告)日：2009-04-07
申请号：US11113299
申请日：2005-04-25
申请人： Kazushi Sato , Kuniaki Takahashi , Teruhiko Suzuki , Yoichi Yagasaki
发明人： Kazushi Sato , Kuniaki Takahashi , Teruhiko Suzuki , Yoichi Yagasaki
IPC分类号： H04B1/66
CPC分类号： H04N19/40 , H04N19/115 , H04N19/126 , H04N19/139 , H04N19/14 , H04N19/142 , H04N19/149 , H04N19/159 , H04N19/172 , H04N19/196 , H04N19/20 , H04N19/463 , H04N19/51 , H04N19/61
摘要： An image information conversion apparatus and method by which picture quality deterioration caused by conversion from inputted MPEG2 image compression information into MPEG4 image compression information to be outputted is prevented. When an I picture of an MPEG2 bit stream is to be converted into a P-VOP of an MPEG4 bit stream based on an estimated value of the complexity for each VOP, a scene change detection section detects whether or not the I picture includes a scene change. If a scene change is detected by the scene change detection section, then a GOV structure determination section determines that conversion of the I picture of the MPEG2 bit stream into a P-VOP of an MPEG4 bit stream should not be performed.
摘要翻译：防止由输入的MPEG2图像压缩信息转换成要输出的MPEG4图像压缩信息引起的图像质量劣化的图像信息转换装置和方法。当基于每个VOP的复杂度的估计值将MPEG2比特流的I图像转换为MPEG4比特流的P-VOP时，场景改变检测部分检测I图像是否包括场景更改。如果场景变化检测部检测到场景变化，则GOV构造判定部判定为不进行MPEG2比特流的P图像的MPEG图像的MPEG图像的转换。

3. 发明授权

US07088775B2 Apparatus and method for converting image data 失效
公开(公告)号：US07088775B2
公开(公告)日：2006-08-08
申请号：US09765852
申请日：2001-01-19
申请人： Kazushi Sato , Kuniaki Takahashi , Zhu Yiwen , Teruhiko Suzuki , Yoichi Yagasaki
发明人： Kazushi Sato , Kuniaki Takahashi , Zhu Yiwen , Teruhiko Suzuki , Yoichi Yagasaki
IPC分类号： H04B1/66
CPC分类号： H04N5/4401 , H04N7/012 , H04N19/132 , H04N19/20 , H04N19/40 , H04N19/577 , H04N19/587 , H04N21/440218 , H04N21/440281
摘要： An image data converting apparatus comprising an MPEG2-image data decoding section 19, a scan-converting section 20, an MPEG4-image encoding section 21, and a picture-type determining section 18. The MPEG2-image data decoding section 19 decodes input MPEG2-image compressed data in both the vertical direction and the horizontal direction by using only lower, fourth-order coefficients. The scan-converting section 20 converts interlaced-scan pixel data to sequential-scan pixel data. The MPEG4-image encoding section 21 generates MPEG4-image compressed data from the sequential-scan pixel signals. The sections 19, 20 and 21 are connected in series. The picture-type determining section 18 is connected to the input of the MPEG2-image data decoding section 19. The section 18 determines the picture type of each frame data contained in the interlaced-scan MPEG4-picture compressed data, outputs only the frame data about I/P pictures, discards the frame data about B pictures, thereby converting the frame rate.

4. 发明申请

US20050190840A1 Image information conversion apparatus and image information conversion method 失效
公开(公告)号：US20050190840A1
公开(公告)日：2005-09-01
申请号：US11113295
申请日：2005-04-25
申请人： Kazushi Sato , Kuniaki Takahashi , Teruhiko Suzuki , Yoichi Yagasaki
发明人： Kazushi Sato , Kuniaki Takahashi , Teruhiko Suzuki , Yoichi Yagasaki
IPC分类号： H04N19/50 , G06T9/00 , H04N19/103 , H04N19/134 , H04N19/136 , H04N19/142 , H04N19/146 , H04N19/172 , H04N19/186 , H04N19/19 , H04N19/196 , H04N19/20 , H04N19/40 , H04N19/423 , H04N19/51 , H04N19/59 , H04N19/60 , H04N19/625 , H04N19/85 , H04N19/91 , H04N7/12
CPC分类号： H04N19/40 , H04N19/115 , H04N19/126 , H04N19/139 , H04N19/14 , H04N19/142 , H04N19/149 , H04N19/159 , H04N19/172 , H04N19/196 , H04N19/20 , H04N19/463 , H04N19/51 , H04N19/61
摘要： The invention provides an image information conversion apparatus and method by which picture quality deterioration caused by conversion from inputted MPEG2 image compression information into MPEG4 image compression information to be outputted is prevented. When an I picture of an MPEG2 bit stream is to be converted into a P-VOP of an MPEG4 bit stream based on an estimated value of the complexity for each VOP, a scene change detection section detects whether or not the I picture includes a scene change. If a scene change is detected by the scene change detection section, then a GOV structure determination section determines that conversion of the I picture of the MPEG2 bit stream into a P-VOP of an MPEG4 bit stream should not be performed.

5. 发明授权

US06888889B2 Image information conversion apparatus and image information conversion method 失效
标题翻译：图像信息转换装置和图像信息转换方法
公开(公告)号：US06888889B2
公开(公告)日：2005-05-03
申请号：US09986435
申请日：2001-11-08
申请人： Kazushi Sato , Kuniaki Takahashi , Teruhiko Suzuki , Yoichi Yagasaki
发明人： Kazushi Sato , Kuniaki Takahashi , Teruhiko Suzuki , Yoichi Yagasaki
IPC分类号： H04N19/50 , G06T9/00 , H04N19/103 , H04N19/134 , H04N19/136 , H04N19/142 , H04N19/146 , H04N19/172 , H04N19/186 , H04N19/19 , H04N19/196 , H04N19/20 , H04N19/40 , H04N19/423 , H04N19/51 , H04N19/59 , H04N19/60 , H04N19/625 , H04N19/85 , H04N19/91 , H04B1/66 , H04N7/12
CPC分类号： H04N19/40 , H04N19/115 , H04N19/126 , H04N19/139 , H04N19/14 , H04N19/142 , H04N19/149 , H04N19/159 , H04N19/172 , H04N19/196 , H04N19/20 , H04N19/463 , H04N19/51 , H04N19/61
摘要： The system provides an image information conversion apparatus and method by which picture quality deterioration caused by conversion from inputted MPEG2 image compression information into MPEG4 image compression information to be outputted is prevented. When an I picture of an MPEG2 bit stream is to be converted into a P-VOP of an MPEG4 bit stream based on an estimated value of the complexity for each VOP, a scene change detection section detects whether or not the I picture includes a scene change. If a scene change is detected by the scene change detection section, then a GOV structure determination section determines that conversion of the I picture of the MPEG2 bit stream into a P-VOP of an MPEG4 bit stream should not be performed.
摘要翻译：该系统提供了一种图像信息转换装置和方法，通过该图像信息转换装置和方法防止了从输入的MPEG2图像压缩信息转换成要输出的MPEG4图像压缩信息引起的图像质量恶化。当基于每个VOP的复杂度的估计值将MPEG2比特流的I图像转换为MPEG4比特流的P-VOP时，场景改变检测部分检测I图像是否包括场景更改。如果场景变化检测部检测到场景变化，则GOV构造判定部判定为不进行MPEG2比特流的P图像的MPEG图像的MPEG图像的转换。

6. 发明授权

US08144767B2 Method and apparatus for coding image information, method and apparatus for decoding image information, method and apparatus for coding and decoding image information, and system of coding and transmitting image information 有权
标题翻译：用于图像信息编码的方法和装置，用于对图像信息进行解码的方法和装置，用于对图像信息进行编码和解码的方法和装置，以及编码和发送图像信息的系统
公开(公告)号：US08144767B2
公开(公告)日：2012-03-27
申请号：US12620383
申请日：2009-11-17
申请人： Kazushi Sato , Osamu Sunohara , Teruhiko Suzuki , Peter Kuhn , Yoichi Yagasaki , Kuniaki Takahashi
发明人： Kazushi Sato , Osamu Sunohara , Teruhiko Suzuki , Peter Kuhn , Yoichi Yagasaki , Kuniaki Takahashi
IPC分类号： H04B1/66
CPC分类号： H04N19/124 , H04N7/26244 , H04N7/26335 , H04N7/26941 , H04N7/50 , H04N19/126 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/40 , H04N19/44 , H04N19/60 , H04N19/61 , H04N19/625
摘要： An image information decoding method for decoding compressed image information which has been coded via a process including dividing an input image signal into blocks, performing an orthogonal transform on the blocks on a block-by-block basis, and quantizing resultant orthogonal transform coefficients. The decoding process includes performing dequantization such that a quantization parameter is weighted by an addition operation, and the dequantization is performed on each chroma components of the quantized coefficients using said weighted quantization parameter, and performing an inverse orthogonal transform.
摘要翻译：一种图像信息解码方法，用于对通过包括将输入图像信号分割为块的处理进行了编码的压缩图像信息进行解码，对该块进行正交变换，并对所得到的正交变换系数进行量化。解码处理包括进行解量化，使得量化参数通过加法运算加权，并且使用所述加权量化参数对量化系数的每个色度分量执行去量化，并执行逆正交变换。

7. 发明授权

US07409098B2 Image processing apparatus and method for coding with complexity-based quantization 失效
标题翻译：用于基于复杂度量化的编码的图像处理装置和方法
公开(公告)号：US07409098B2
公开(公告)日：2008-08-05
申请号：US10733255
申请日：2003-12-12
申请人： Kazushi Sato , Osamu Sunohara , Kuniaki Takahashi , Teruhiko Suzuki , Yoichi Yagasaki
发明人： Kazushi Sato , Osamu Sunohara , Kuniaki Takahashi , Teruhiko Suzuki , Yoichi Yagasaki
IPC分类号： G06K9/00 , G06K9/36 , G06K9/38 , G06K9/46 , H04B1/66 , H04N1/00 , H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： H04N19/42 , H04N19/115 , H04N19/126 , H04N19/14 , H04N19/149 , H04N19/152 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/177 , H04N19/61
摘要： An image processing apparatus is provided that can define the change amount of a quantizing parameter by suitably reflecting the complexity of image data in the case, when the quantizing parameter is increased a predetermined unit amount, the coarseness the image data of motion picture is quantized becomes r times. An activity computing circuit generates an activity Nactj serving as a complexity of the image data. A ΔQ computing circuit defines a corresponding relationship between activity Nactj and change amount data ΔQ such that the change amount data ΔQ of quantizing parameter increases 1 as the activity Nactj becomes 1.12 times, to thereby acquire change amount data ΔQ corresponding to the activity Nactj generated by the activity computing circuit.
摘要翻译：提供一种图像处理装置，其可以通过在量化参数增加预定单位量的情况下适当地反映图像数据的复杂度来定义量化参数的变化量，使运动图像的图像数据量化的粗糙度变为 r次。活动计算电路产生用作图像数据的复杂度的活动Nact。 DeltaQ计算电路定义活动Nact和改变量数据DeltaQ之间的对应关系，使得量化参数的变化量数据DeltaQ随着活动Nact 增加1，变为1.12 从而获取与由活动计算电路生成的活动Nact相关的变化量数据DeltaQ。

8. 发明申请

US20070286501A1 METHOD AND APPARATUS FOR CODING IMAGE INFORMATION, METHOD AND APPARATUS FOR DECODING IMAGE INFORMATION, METHOD AND APPARATUS FOR CODING AND DECODING IMAGE INFORMATION, AND SYSTEM OF CODING AND TRANSMITTING IMAGE INFORMATION 有权
标题翻译：用于编码图像信息的方法和装置，用于解码图像信息的方法和装置，用于编码和解码图像信息的方法和装置，以及编码和传输图像信息的系统
公开(公告)号：US20070286501A1
公开(公告)日：2007-12-13
申请号：US11836467
申请日：2007-08-09
申请人： Kazushi Sato , Osamu Sunohara , Teruhiko Suzuki , Peter Kuhn , Yoichi Yagasaki , Kuniaki Takahashi
发明人： Kazushi Sato , Osamu Sunohara , Teruhiko Suzuki , Peter Kuhn , Yoichi Yagasaki , Kuniaki Takahashi
IPC分类号： G06K9/36
CPC分类号： H04N19/124 , H04N7/26244 , H04N7/26335 , H04N7/26941 , H04N7/50 , H04N19/126 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/40 , H04N19/44 , H04N19/60 , H04N19/61 , H04N19/625
摘要： An image information decoding method for decoding compressed image information which has been coded via a process including dividing an input image signal into blocks, performing an orthogonal transform on the blocks on a block-by-block basis, and quantizing resultant orthogonal transform coefficients. The decoding process includes performing dequantization such that a quantization parameter is weighted by an addition operation, and the dequantization is performed on each chroma components of the quantized coefficients using said weighted quantization parameter, and performing an inverse orthogonal transform.
摘要翻译：一种图像信息解码方法，用于对通过包括将输入图像信号分割为块的处理进行了编码的压缩图像信息进行解码，对该块进行正交变换，并对所得到的正交变换系数进行量化。解码处理包括进行解量化，使得量化参数通过加法运算加权，并且使用所述加权量化参数对量化系数的每个色度分量执行去量化，并执行逆正交变换。

9. 发明授权

US07116835B2 Image processing apparatus and method, recording medium, and program 失效
标题翻译：图像处理装置和方法，记录介质和程序
公开(公告)号：US07116835B2
公开(公告)日：2006-10-03
申请号：US10196259
申请日：2002-07-17
申请人： Kuniaki Takahashi , Kazushi Sato , Yoichi Yagasaki
发明人： Kuniaki Takahashi , Kazushi Sato , Yoichi Yagasaki
IPC分类号： G06K9/36 , G06K9/46 , H04N7/12
CPC分类号： H04N19/59 , H04N19/124 , H04N19/132 , H04N19/15 , H04N19/152 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/186 , H04N19/40 , H04N19/523 , H04N19/56 , H04N19/61
摘要： A normalized activity calculating unit calculates a normalized activity that is calculated from luminescence component pixel values of an original image on the basis of information from an information buffer, such as bit rate, an amount of bits generated in each frame, and an amount of bits generated and a quantization step size in each macroblock. The normalized activity calculating unit then outputs the normalized activity to a code amount control unit. The code amount control unit calculates a quantization scale code corresponding to a target bit rate, which quantization scale code matches visual characteristics, using the normalized activity inputted from the normalized activity calculating unit, and then outputs the quantization scale code to a quantizing unit. The quantizing unit quantizes discrete cosine transform coefficients inputted from a band limiting unit on the basis of the quantization scale code inputted to the quantizing unit.
摘要翻译：归一化活动计算单元基于来自信息缓冲器的信息，例如比特率，每帧中生成的位数和位数来计算从原始图像的发光分量像素值计算的归一化活动度生成和每个宏块中的量化步长。归一化活动计算单元然后将归一化活动输出到码量控制单元。代码量控制单元使用从归一化活动性计算单元输入的归一化活动来计算与目标比特率相对应的量化尺度代码与量化尺度代码匹配视觉特性的量化尺度代码，然后将量化尺度代码输出到量化单元。量化单元基于输入到量化单元的量化比例代码量化从频带限制单元输入的离散余弦变换系数。

10. 发明申请

US20050190841A1 Image information conversion apparatus and image information conversion method 失效
公开(公告)号：US20050190841A1
公开(公告)日：2005-09-01
申请号：US11113299
申请日：2005-04-25
申请人： Kazushi Sato , Kuniaki Takahashi , Teruhiko Suzuki , Yoichi Yagasaki
发明人： Kazushi Sato , Kuniaki Takahashi , Teruhiko Suzuki , Yoichi Yagasaki
IPC分类号： H04N19/50 , G06T9/00 , H04N19/103 , H04N19/134 , H04N19/136 , H04N19/142 , H04N19/146 , H04N19/172 , H04N19/186 , H04N19/19 , H04N19/196 , H04N19/20 , H04N19/40 , H04N19/423 , H04N19/51 , H04N19/59 , H04N19/60 , H04N19/625 , H04N19/85 , H04N19/91 , H04N7/12
CPC分类号： H04N19/40 , H04N19/115 , H04N19/126 , H04N19/139 , H04N19/14 , H04N19/142 , H04N19/149 , H04N19/159 , H04N19/172 , H04N19/196 , H04N19/20 , H04N19/463 , H04N19/51 , H04N19/61
摘要： The invention provides an image information conversion apparatus and method by which picture quality deterioration caused by conversion from inputted MPEG2 image compression information into MPEG4 image compression information to be outputted is prevented. When an I picture of an MPEG2 bit stream is to be converted into a P-VOP of an MPEG4 bit stream based on an estimated value of the complexity for each VOP, a scene change detection section detects whether or not the I picture includes a scene change. If a scene change is detected by the scene change detection section, then a GOV structure determination section determines that conversion of the I picture of the MPEG2 bit stream into a P-VOP of an MPEG4 bit stream should not be performed.

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