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    • 3. 发明授权
    • Image coding apparatus, image coding method and image coding program
    • 图像编码装置,图像编码方法以及图像编码程序
    • US08184716B2
    • 2012-05-22
    • US12234741
    • 2008-09-22
    • Tomoya KodamaAtsushi MatsumuraNoboru YamaguchiTatsuaki Iwata
    • Tomoya KodamaAtsushi MatsumuraNoboru YamaguchiTatsuaki Iwata
    • H04N11/02G06K9/46
    • H04N19/103H04N19/142H04N19/147H04N19/176H04N19/61
    • The image coding apparatus is provided to realize image coding with little calculation quantity and through rate distortion optimization thereby maintaining a favorable image quality. The image coding apparatus includes a processing unit that conducts frequency transform and quantization on a block in a predetermined manner for a plurality of coding modes, each mode having a different coding process, a cost calculating unit that calculates a predictive coded quantity and coding distortion in a coding mode using a result of the quantization conducted by the processing unit and a residue to obtain a cost regarding the coding mode, a minimum coding cost selecting unit that selects a minimum coding cost among the coding costs calculated for respective coding modes, and a coding unit that conducts coding on the blocks in a coding mode associated with the minimum coding cost selected by the minimum coding cost selecting unit.
    • 提供图像编码装置以实现少量计算量和通过速率失真优化的图像编码,从而保持良好的图像质量。 该图像编码装置包括处理单元,对于多个编码模式,以预定的方式对块进行频率变换和量化,每个模式具有不同的编码处理,计算预测编码量和编码失真的成本计算单元 使用由处理单元进行的量化结果的编码模式和残差来获得关于编码模式的成本;最小编码成本选择单元,对于针对各个编码模式计算的编码成本中选择最小编码成本,以及 编码单元,其以与由最小编码成本选择单元选择的最小编码成本相关联的编码模式对块进行编码。
    • 4. 发明授权
    • Image coding apparatus including a coded quantity prediction expression retaining unit
    • 图像编码装置,包括编码量预测表达式保持单元
    • US07502517B2
    • 2009-03-10
    • US11062625
    • 2005-02-23
    • Tomoya KodamaAtsushi MatsumuraNoboru YamaguchiTatsuaki Iwata
    • Tomoya KodamaAtsushi MatsumuraNoboru YamaguchiTatsuaki Iwata
    • G06K9/36G06K9/46
    • H04N19/103H04N19/142H04N19/147H04N19/176H04N19/61
    • The image coding apparatus is provided to realize image coding with little calculation quantity and through rate distortion optimization thereby maintaining a favorable image quality. The image coding apparatus includes a processing unit that conducts frequency transform and quantization on a block in a predetermined manner for a plurality of coding modes, each mode having a different coding process, a cost calculating unit that calculates a predictive coded quantity and coding distortion in a coding mode using a result of the quantization conducted by the processing unit and a residue to obtain a cost regarding the coding mode, a minimum coding cost selecting unit that selects a minimum coding cost among the coding costs calculated for respective coding modes, and a coding unit that conducts coding on the blocks in a coding mode associated with the minimum coding cost selected by the minimum coding cost selecting unit.
    • 提供图像编码装置以实现少量计算量和通过速率失真优化的图像编码,从而保持良好的图像质量。 该图像编码装置包括处理单元,对于多个编码模式,以预定的方式对块进行频率变换和量化,每个模式具有不同的编码处理,计算预测编码量和编码失真的成本计算单元 使用由处理单元进行的量化结果的编码模式和残差来获得关于编码模式的成本;最小编码成本选择单元,对于针对各个编码模式计算的编码成本中选择最小编码成本,以及 编码单元,其以与由最小编码成本选择单元选择的最小编码成本相关联的编码模式对块进行编码。
    • 5. 发明申请
    • IMAGE CODING APPARATUS, IMAGE CODING METHOD AND IMAGE CODING PROGRAM
    • 图像编码设备,图像编码方法和图像编码程序
    • US20090041122A1
    • 2009-02-12
    • US12234741
    • 2008-09-22
    • Tomoya KodamaAtsushi MatsumuraNoboru YamaguchiTatsuaki Iwata
    • Tomoya KodamaAtsushi MatsumuraNoboru YamaguchiTatsuaki Iwata
    • H04N7/26
    • H04N19/103H04N19/142H04N19/147H04N19/176H04N19/61
    • The image coding apparatus is provided to realize image coding with little calculation quantity and through rate distortion optimization thereby maintaining a favorable image quality. The image coding apparatus includes a processing unit that conducts frequency transform and quantization on a block in a predetermined manner for a plurality of coding modes, each mode having a different coding process, a cost calculating unit that calculates a predictive coded quantity and coding distortion in a coding mode using a result of the quantization conducted by the processing unit and a residue to obtain a cost regarding the coding mode, a minimum coding cost selecting unit that selects a minimum coding cost among the coding costs calculated for respective coding modes, and a coding unit that conducts coding on the blocks in a coding mode associated with the minimum coding cost selected by the minimum coding cost selecting unit.
    • 提供图像编码装置以实现少量计算量和通过速率失真优化的图像编码,从而保持良好的图像质量。 该图像编码装置包括处理单元,对于多个编码模式,以预定的方式对块进行频率变换和量化,每个模式具有不同的编码处理,计算预测编码量和编码失真的成本计算单元 使用由处理单元进行的量化结果的编码模式和残差来获得关于编码模式的成本;最小编码成本选择单元,对于针对各个编码模式计算的编码成本中选择最小编码成本,以及 编码单元,其以与由最小编码成本选择单元选择的最小编码成本相关联的编码模式对块进行编码。