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    • 83. 发明授权
    • Image processing apparatus and method, recording medium, and program
    • 图像处理装置和方法,记录介质和程序
    • US07116835B2
    • 2006-10-03
    • US10196259
    • 2002-07-17
    • Kuniaki TakahashiKazushi SatoYoichi Yagasaki
    • Kuniaki TakahashiKazushi SatoYoichi Yagasaki
    • G06K9/36G06K9/46H04N7/12
    • H04N19/59H04N19/124H04N19/132H04N19/15H04N19/152H04N19/172H04N19/176H04N19/18H04N19/186H04N19/40H04N19/523H04N19/56H04N19/61
    • 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.
    • 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。
    • 84. 发明申请
    • Image processing apparatus, encoding device, and methods of same
    • 图像处理装置,编码装置及其方法
    • US20060146183A1
    • 2006-07-06
    • US11300317
    • 2005-12-15
    • Ohji NakagamiKazushi SatoYoichi Yagasaki
    • Ohji NakagamiKazushi SatoYoichi Yagasaki
    • H04N11/02H04N11/04H04N7/12
    • H04N19/124H04N19/186H04N19/523H04N19/57H04N19/61
    • An image processing apparatus and an encoding device able to raise an encoding efficiency and a quality of a decoded image in comparison with a conventional apparatus and methods of the same, specifically image processing apparatus for processing a plurality of blocks defined in a two-dimensional image region in units of blocks, comprising a difference detecting unit for detecting the difference between a color difference enhancement block enhancing a color difference component with respect to a luminance component of a block to be processed in a picture to be processed or a block used for processing that block to be processed and the luminance block of the luminance component obtained from that block and a processing unit for performing processing strongly reflecting an influence of the color difference component of the block to be processed or processing not causing loss of information of the color difference component even when the difference detected by the difference detecting unit exceeds a predetermined threshold value compared with a case where the difference does not exceed the predetermined threshold value.
    • 与常规装置及其方法相比,能够提高编码效率和解码图像质量的图像处理装置和编码装置,具体地说,用于处理在二维图像中定义的多个块的图像处理装置 区域,包括差异检测单元,用于检测在待处理图像中要处理的块的亮度分量和用于处理的块之间的色差分量增强的色差增强块之间的差异 要处理的块和从该块获得的亮度分量的亮度块和用于执行强烈反映要处理的块的色差分量的影响的处理或不导致色差的信息丢失的处理的处理单元 分量即使当差异检测单位检测到差异时 与差不超过预定阈值的情况相比,t超过预定阈值。
    • 85. 发明授权
    • Motion vector conversion method and conversion apparatus
    • 运动矢量转换方法及转换装置
    • US07061981B2
    • 2006-06-13
    • US09970306
    • 2001-10-04
    • Kuniaki TakahashiKazushi SatoTeruhiko Suzuki
    • Kuniaki TakahashiKazushi SatoTeruhiko Suzuki
    • H04N7/12
    • H04N19/40H04N19/51
    • The invention provides a motion vector conversion method by which the coding efficiency in image coding of MPEG4 in an image information conversion method can be augmented. In the motion vector conversion method for an image information conversion method wherein a bit stream representative of interlaced scanned image compression information of MPEG2 is inputted and a bit stream representative of progressively scanned image compression information of MPEG4 is outputted, 16×16 motion vectors of MPEG2 of the inputted bit stream representative of image compression information of MPEG2 are accepted successively, and 8×8 motion vectors of MPEG4 and 16×16 motion vectors of MPEG4 are produced successively based on the 16×16 motion vectors of MPEG2. Every other one of I frames and P frames of the bit stream of MPEG2 is dropped to produce a bit stream of MPEG4 of a reduced frame rate and a low bit rate.
    • 本发明提供一种运动矢量转换方法,通过该方法可以增强图像信息转换方法中的MPEG4的图像编码中的编码效率。 在其中输入代表MPEG2的隔行扫描图像压缩信息的比特流并且输出代表逐渐扫描的MPEG4图像压缩信息的比特流的图像信息转换方法的运动矢量转换方法中,输出MPEG2的16×16个运动矢量 输入代表MPEG2的图像压缩信息的比特流被连续地接受,并且基于MPEG2的16×16个运动矢量连续地产生MPEG4的MPEG4和16x16运动矢量的8×8个运动矢量。 MPEG2的比特流的I帧和P帧中的每一个被丢弃以产生具有降低的帧速率和低比特率的MPEG4的比特流。
    • 87. 发明授权
    • Inverse discrete-cosine transform apparatus
    • 逆离散余弦变换装置
    • US06735609B2
    • 2004-05-11
    • US09794296
    • 2001-02-27
    • Rajesh Kumar DixitTakao TeraoHiroshi SugawaraMasami GosekiKazushi Sato
    • Rajesh Kumar DixitTakao TeraoHiroshi SugawaraMasami GosekiKazushi Sato
    • G06F1714
    • G06F17/147G06T9/007
    • An inverse discrete-cosine transform apparatus that is simple in structure and can yet output pixel data items different in resolution. The apparatus comprises eight inverse discrete-cosine transform multipliers 23, ten field, compression, inverse discrete-cosine transform multipliers 22, eight selectors 24, eight selectors 25, eight buffers 26, eight sign multipliers 27, a control section, eight adders 28, and eight buffers 29. The control section controls the selectors 24, selectors 25, buffers 26 and sign multipliers 27 in accordance with whether the input discrete-cosine block has been subjected to field division and where the discrete-cosine coefficients are located in the block. One of the values input to the selectors 24, selectors 25, buffers 26 and sign multipliers 27 is thereby selected. The value selected is output after added with the plus sign or the minus sign. The adders 28 add the values output from the selectors 24, selectors 25, buffers 26 and sign multipliers 27. The buffers 29 store the values output from the adders 28.
    • 一种离散余弦变换装置,结构简单,可以输出分辨率不同的像素数据。 该装置包括八个反离散余弦变换乘法器23,十个场,压缩,反离散余弦变换乘法器22,八个选择器24,八个选择器25,八个缓冲器26,八个符号乘法器27,控制部分,八个加法器28, 和八个缓冲器29.控制部分根据输入的离散余弦块是否已经进行了场分割并且其中离散余弦系数位于块中来控制选择器24,选择器25,缓冲器26和符号乘法器27 。 由此选择输入到选择器24,选择器25,缓冲器26和符号乘法器27的值之一。 选择的值在添加加号或减号后输出。 加法器28添加从选择器24,选择器25,缓冲器26和符号乘法器27输出的值。缓冲器29存储从加法器28输出的值。
    • 90. 发明授权
    • Image processing device and method with hierarchical data structure
    • 具有分层数据结构的图像处理设备和方法
    • US09123130B2
    • 2015-09-01
    • US13977573
    • 2011-12-26
    • Kazushi Sato
    • Kazushi Sato
    • G06K9/36G06T9/20H04N19/176H04N19/70H04N19/119H04N19/162H04N19/174
    • G06T9/20H04N19/119H04N19/162H04N19/174H04N19/176H04N19/70
    • The present technology includes a setting unit that sets the position of a boundary of image data in an upper hierarchy unit to be in a lower hierarchy unit that is lower than the upper hierarchy unit when the image data is encoded in a unit of encoding with a hierarchical structure; an encoding unit that generates encoded data by encoding the image data according to the position of the boundary set by the setting unit; and an addition unit that adds information on the image data in the upper hierarchy unit before encoded data in an intermediate hierarchy unit that includes the boundary set by the setting unit, is lower than the upper hierarchy unit, and is higher than the lower hierarchy unit. The present technology can be applied to, for example, an image processing device.
    • 本技术包括设置单元,当以图像数据编码为单位对图像数据进行编码时,将上层单元中的图像数据的边界的位置设置为低于上层单元的下层单元 层次结构; 编码单元,其通过根据由设置单元设置的边界的位置对图像数据进行编码来生成编码数据; 以及附加单元,其在包括由设置单元设置的边界的中间层单元中的编码数据之前的上层单元中的图像数据的信息低于上层单元,并且高于下层单元 。 本技术可以应用于例如图像处理装置。