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    • 21. 发明申请
    • IMAGE CODING APPARATUS AND IMAGE CODING METHOD
    • 图像编码装置和图像编码方法
    • US20070211803A1
    • 2007-09-13
    • US11682859
    • 2007-03-06
    • Akihiro Oishi
    • Akihiro Oishi
    • H04N11/04H04N7/12
    • H04N19/136H04N19/103H04N19/107
    • At least one exemplary embodiment is directed to an image coding apparatus configured to encode moving image data including: a coding unit configured to encode each picture in the moving image data in a unit of a first block; a luminance change detection unit configured to divide the moving image data into a plurality of second blocks and to detect a luminance change block in which a luminance change occurred from the plurality of the second blocks in one picture; and a code amount adjustment unit configured to increase an amount of code allocated to the first block if the first block corresponds to the luminance change block detected by the luminance change detection unit.
    • 至少一个示例性实施例涉及被配置为对运动图像数据进行编码的图像编码装置,包括:编码单元,被配置为以第一块为单位对运动图像数据中的每个图像进行编码; 亮度变化检测单元,被配置为将运动图像数据划分成多个第二块,并且检测在一个图像中从多个第二块发生亮度变化的亮度变化块; 以及代码量调整单元,被配置为如果第一块对应于由亮度变化检测单元检测的亮度变化块,则增加分配给第一块的代码量。
    • 23. 发明授权
    • Moving image encoding apparatus, method of controlling the same, and computer readable storage medium
    • 运动图像编码装置,其控制方法和计算机可读存储介质
    • US09055292B2
    • 2015-06-09
    • US13080107
    • 2011-04-05
    • Akihiro Oishi
    • Akihiro Oishi
    • H04N7/32H04N19/14H04N19/176H04N19/122H04N19/61H04N19/11
    • H04N19/14H04N19/11H04N19/122H04N19/176H04N19/61
    • A moving image encoding apparatus for dividing an image into image blocks and performing intra-prediction encoding of a target image block using pixel values of an image block adjacent to the target image block, comprises a prediction unit for performing intra-prediction in accordance with one of intra-prediction modes corresponding to divided block sizes and outputting intra-predicted image data for the target image block, a determination unit for, when the target image block is a low frequency band image, determining by detecting a change in the pixel value in the image block whether the target image block includes a gradation image, and a decision unit for, when it is determined that the target image block includes the gradation image, deciding a block size of the intra-prediction so as to cause the prediction unit to preferentially select a minimum block size of the divided block sizes.
    • 一种用于将图像分割成图像块并使用与目标图像块相邻的图像块的像素值执行目标图像块的帧内预测编码的运动图像编码装置,包括:预测单元,用于根据一个 对应于分割块大小的帧内预测模式,并输出用于目标图像块的帧内预测图像数据;确定单元,用于当目标图像块是低频带图像时,通过检测目标图像块中的像素值的变化来确定 所述图像块是否包括灰度图像,以及判定单元,用于当确定所述目标图像块包括所述灰度图像时,确定所述帧内预测的块大小,以使所述预测单元 优先选择分割块大小的最小块大小。
    • 24. 发明授权
    • Image coding apparatus and image coding method
    • 图像编码装置和图像编码方法
    • US08270481B2
    • 2012-09-18
    • US11682859
    • 2007-03-06
    • Akihiro Oishi
    • Akihiro Oishi
    • H04N11/04H04N7/12
    • H04N19/136H04N19/103H04N19/107
    • At least one exemplary embodiment is directed to an image coding apparatus configured to encode moving image data including: a coding unit configured to encode each picture in the moving image data in a unit of a first block; a luminance change detection unit configured to divide the moving image data into a plurality of second blocks and to detect a luminance change block in which a luminance change occurred from the plurality of the second blocks in one picture; and a code amount adjustment unit configured to increase an amount of code allocated to the first block if the first block corresponds to the luminance change block detected by the luminance change detection unit.
    • 至少一个示例性实施例涉及被配置为对运动图像数据进行编码的图像编码装置,包括:编码单元,被配置为以第一块为单位对运动图像数据中的每个图像进行编码; 亮度变化检测单元,被配置为将运动图像数据划分成多个第二块,并且检测在一个图像中从多个第二块发生亮度变化的亮度变化块; 以及代码量调整单元,被配置为如果第一块对应于由亮度变化检测单元检测的亮度变化块,则增加分配给第一块的代码量。
    • 26. 发明申请
    • IMAGE ENCODING APPARATUS, METHOD OF CONTROLLING THE SAME, AND COMPUTER PROGRAM
    • 图像编码装置,控制方法和计算机程序
    • US20090116555A1
    • 2009-05-07
    • US12262850
    • 2008-10-31
    • Akihiro Oishi
    • Akihiro Oishi
    • H04N11/02
    • H04N19/527H04N19/124H04N19/139H04N19/147H04N19/15H04N19/152H04N19/172H04N19/61
    • An image encoding apparatus which encodes picture data is provided. The apparatus comprises an encoding unit configured to encode a picture to be encoded; a decoding unit configured to decode the encoded picture; an SN ratio calculation unit configured to calculate an SN ratio using the picture to be encoded and a decoding result of the decoding unit; a setting unit configured to set a target SN ratio serving as an index of the SN ratio; a bitrate control unit configured to control a bitrate of the picture to be encoded based on the target SN ratio; and a motion detection unit configured to detect motion information between the picture to be encoded and another picture, wherein the bitrate control unit controls the bitrate based on the motion information, and a difference between the SN ratio and the target SN ratio.
    • 提供编码图像数据的图像编码装置。 该装置包括:编码单元,被配置为对要编码的图像进行编码; 解码单元,被配置为对编码图像进行解码; SN比计算单元,被配置为使用要编码的图像和解码单元的解码结果来计算SN比; 设置单元,被配置为设置用作所述SN比的索引的目标SN比; 比特率控制单元,被配置为基于所述目标SN比控制要编码的图像的比特率; 以及运动检测单元,被配置为检测要编码的图像与另一图像之间的运动信息,其中所述比特率控制单元基于所述运动信息来控制所述比特率,以及所述SN比和所述目标SN比之间的差异。
    • 27. 发明申请
    • ENCODING CONTROL APPARATUS, ENCODING CONTROL METHOD, AND STORAGE MEDIUM
    • 编码控制装置,编码控制方法和存储介质
    • US20080298465A1
    • 2008-12-04
    • US12129581
    • 2008-05-29
    • Akihiro Oishi
    • Akihiro Oishi
    • H04N7/26
    • H04N19/14H04N19/132H04N19/176H04N19/51
    • An encoding control apparatus is disclosed that includes a variance calculation unit configured to calculate a variance of an encoding target macroblock; a sum-of-absolute-difference calculation unit configured to calculate a sum of absolute differences between the encoding target macroblock and a reference macroblock; a setting unit configured to set, based on the variance and the sum of absolute differences, a standard for determining whether to skip encoding of the encoding target macroblock; a prediction unit configured to perform motion compensation prediction on the encoding target macroblock to obtain a motion-compensated prediction value; and a determination unit configured to determine whether to skip encoding of the encoding target macroblock by comparing the motion-compensated prediction value with the standard. Related apparatuses and methods are also disclosed.
    • 公开了一种编码控制装置,包括:方差计算单元,被配置为计算编码对象宏块的方差; 绝对差差计算单元,被配置为计算编码对象宏块和参考宏块之间的绝对差的和; 设置单元,被配置为基于所述方差和绝对差之和来设置用于确定是否跳过所述编码对象宏块的编码的标准; 预测单元,被配置为对所述编码对象宏块执行运动补偿预测,以获得运动补偿预测值; 以及确定单元,被配置为通过将运动补偿预测值与标准进行比较来确定是否跳过编码对象宏块的编码。 还公开了相关的装置和方法。