Video decoding apparatus restricting the range of intermediate decoding values
    54.
    发明公开
    Video decoding apparatus restricting the range of intermediate decoding values 审中-公开
    视频编码方法用Bittiefenanpassung定点转换,和为此的装置,以及视频编码方法及装置

    公开(公告)号:EP2905708A1

    公开(公告)日:2015-08-12

    申请号:EP15153226.4

    申请日:2012-07-02

    摘要: A video decoding apparatus for preventing overflow from occurring in output data in operations of a decoding process. The video decoding apparatus includes units for parsing and restoring quantized transformation coefficients in units of blocks of an image from a received bitstream, restoring transformation coefficients by performing inverse quantization and a first clipping on the quantized transformation coefficients, and restoring samples by performing one-dimensional (1D) inverse transformation and a second clipping on the inverse-quantized transformation coefficients, and generating residual values by performing horizontal inverse-transformation on the sample values. The first clipping is performed for restricting the inverse-quantized transformed coefficients to a range of a first bit depth and the second clipping is performed for restricting the sample values to a range of a second bitdepth.

    摘要翻译: 用于从在解码处理的操作中输出数据中出现溢出预防一种视频解码装置。 视频解码设备包括:用于解析单元和恢复从接收的比特流的图像的块为单位量化变换系数,通过执行逆量化和对量化的变换系数的第一削波,并通过执行恢复样品的一维恢复的变换系数 (1D)逆变换和逆量化的变换系数的第二限幅,并通过在样本值执行水平逆变换产生的残余值。 第一夹持执行用于限制所述逆量化变换系数的范围内的第一位元深度和第二限幅的情况下进行用于限制样值的范围内的第二位深度的。

    IMAGE PROCESSING DEVICE AND METHOD
    55.
    发明公开
    IMAGE PROCESSING DEVICE AND METHOD 审中-公开
    图像处理设备和方法

    公开(公告)号:EP2869556A1

    公开(公告)日:2015-05-06

    申请号:EP13809141.8

    申请日:2013-06-18

    申请人: Sony Corporation

    发明人: NAKAGAMI Ohji

    IPC分类号: H04N7/00

    摘要: The present disclosure relates to an image processing apparatus and a method capable of reducing an amount of codes in encoding or decoding.
    A type setting unit uses a deblocked pixel value to set a type of a filter which is common between components of Y, Cb, Cr in units of LCUs, and provides the type to a syntax write unit. An offset setting unit uses a deblocked pixel value to set an offset independent for each of components of Y, Cb, Cr in units of LCUs. An SAO control information setting unit provides the offset or a merge flag, which is set by referring to the offset given by the offset setting unit, to the syntax write unit. The present disclosure can be applied to, for example, an image processing apparatus.

    摘要翻译: 本公开涉及能够减少编码或解码中的码量的图像处理设备和方法。 类型设置单元使用解块后的像素值以LCU为单位设置在Y,Cb,Cr的分量之间公共的滤波器的类型,并将该类型提供给语法写入单元。 偏移设置单元使用去块的像素值来设置与以LCU为单位的Y,Cb,Cr的每个分量无关的偏移。 SAO控制信息设定单元将通过参考由偏移设定单元给出的偏移而设定的偏移或合并标志提供给语法写入单元。 本公开可以应用于例如图像处理装置。