公开(公告)号：US08270744B2

公开(公告)日：2012-09-18

申请号：US12673186

申请日：2009-06-23

申请人： Takaaki Fuchie ,  Kyohei Koyabu ,  Shojiro Shibata ,  Kashu Takahashi ,  Yuya Horiuchi

发明人： Takaaki Fuchie ,  Kyohei Koyabu ,  Shojiro Shibata ,  Kashu Takahashi ,  Yuya Horiuchi

IPC分类号： G06K9/36 ,  G06K9/46 ,  G06K9/38 ,  H04B1/66

CPC分类号： H04N19/436 ,  H04N19/103 ,  H04N19/126 ,  H04N19/13 ,  H04N19/14 ,  H04N19/149 ,  H04N19/15 ,  H04N19/176 ,  H04N19/18 ,  H04N19/192 ,  H04N19/197 ,  H04N19/50 ,  H04N19/61 ,  H04N19/89 ,  H04N19/91

摘要： The present invention enables a reduction in circuit scale.In an image coding apparatus (100), as for DCT coefficients as simple coded data obtained by coding an input image (91) by simple processing, the input image (91) is coded by at least quantizing the input image (91) as an input image on the basis of selected quantization parameters (QPl) discretely selected from quantization parameters (QP) as quantization factors, thereby computing generated code sizes of the input image (91) upon coding. The image coding apparatus (100) corrects an error in the generated code sizes of the input image upon coding which occurs in accordance with the simple processing, thereby computing low-precision generated code sizes. The image coding apparatus (100) computes low-precision generated code sizes when the input image (91) is coded on the basis of quantization parameters (QP) other than the selected quantization parameters (QPl), by an interpolation process with respect to the low-precision generated code sizes when the input image (91) is coded on the basis of the selected quantization parameters (QPl).

摘要翻译： 本发明能够减小电路规模。 在图像编码装置（100）中，对于作为通过简单处理对输入图像（91）进行编码而获得的简单编码数据的DCT系数，输入图像（91）通过至少将输入图像（91）量化为 基于从量化参数（QP）离散地选择的量化参数（QP1）作为量化因子的输入图像，从而计算编码时输入图像（91）的生成代码大小。 图像编码装置（100）根据简单处理对编码后的输出图像的生成码量进行校正，从而计算出低精度生成码量。 当根据所选择的量化参数（QP1）以外的量化参数（QP）对输入图像（91）进行编码时，图像编码装置（100）通过相对于所选择的量化参数 基于选择的量化参数（QP1）对输入图像（91）进行编码时的低精度生成码量。

公开(公告)号：US20110182524A1

公开(公告)日：2011-07-28

申请号：US12673216

申请日：2009-06-23

申请人： Shojiro Shibata ,  Yakaaki Fuchie ,  Kashu Takahashi ,  Yuya Horiuchi

发明人： Shojiro Shibata ,  Yakaaki Fuchie ,  Kashu Takahashi ,  Yuya Horiuchi

IPC分类号： G06K9/00

CPC分类号： H04N19/146 ,  H04N19/13 ,  H04N19/176 ,  H04N19/196

摘要： The present invention enables a circuit configuration to be simplified. An image encoding device (100) receives an input image (91) that is line-scanned in units of MBs as scan blocks, each constituted by a plurality of 4×4 blocks, while being scanned in units of 4×4 blocks as encoding blocks, each constituted by a plurality of pixels. The image encoding device (100) selects a VLC (variable length) table corresponding to a table selection index nC, which is an average value of the numbers nB and nA of nonzero coefficients as encoding values on which variable-length encoding is performed in upper-adjoining and left-adjoining 4×4 blocks of a 4×4 block as an encoding target in quantization coefficients as encoding target data based on the input image (91). At this time, in a case where the 4×4 block as an encoding target is at an upper end of an MB, the image encoding device (100) equates the number nB of nonzero coefficients of the upper-adjoining 4×4 block with the number nA of nonzero coefficients of the left-adjoining 4×4 block. The image encoding device (100) performs variable-length encoding on the number of nonzero coefficients of a 4×4 block as an encoding target in quantization coefficients using the selected VLC table.

摘要翻译： 本发明能够简化电路配置。 图像编码装置（100）接收以MB为单位进行线扫描的输入图像（91），作为扫描块，每个扫描块由多个4×4块构成，同时以4×4块为单位进行扫描，作为编码 每个块由多个像素构成。 图像编码装置（100）选择与表选择索引nC对应的VLC（可变长度）表，该表选择索引nC是非零系数的数字nB和nA的平均值，作为在上部执行可变长度编码的编码值 基于输入图像（91），作为编码对象数据的量化系数中的4×4块作为编码对象的4相邻4×4块。 此时，在作为编码对象的4×4块位于MB的上端的情况下，图像编码装置（100）将上邻接的4×4块的非零系数的数量nB等同于 左邻接4×4块的非零系数的数量nA。 图像编码装置（100）使用所选择的VLC表对量化系数中的4×4块的非零系数的数量作为编码对象进行可变长度编码。

公开(公告)号：US08369403B2

公开(公告)日：2013-02-05

申请号：US12530872

申请日：2008-09-12

申请人： Yuya Horiuchi ,  Shojiro Shibata ,  Takaaki Fuchie

发明人： Yuya Horiuchi ,  Shojiro Shibata ,  Takaaki Fuchie

IPC分类号： H04N7/12

CPC分类号： H04N19/146 ,  H04N19/11 ,  H04N19/124 ,  H04N19/134 ,  H04N19/61

摘要： The present invention can suppress the decline in video quality during encoding. The present invention generates, for each of the nine intra image prediction modes preset according to the AVC standard, a difference image data item containing a difference value from pixels surrounding a process-target pixel. Then, an encoding device (10) ranks the intra image prediction modes depending on the sum of absolute difference (SAD), which is the sum of differences that is based on the sum of absolute values of each process-target pixel of the difference image data item and a preference order of offset[n] preset for the intra image prediction mode.

摘要翻译： 本发明可以抑制编码期间视频质量的下降。 本发明为根据AVC标准预设的九个帧内图像预测模式中的每一个产生包含与处理目标像素周围的像素的差值的差分图像数据项。 然后，编码装置（10）根据作为基于差分图像的每个处理目标像素的绝对值之和的差的和的绝对差（SAD）的和来对帧内图像预测模式进行排序 数据项和对于内部图像预测模式预设的偏移量[n]的偏好顺序。

公开(公告)号：US08184711B2

公开(公告)日：2012-05-22

申请号：US12530828

申请日：2008-09-12

申请人： Yuya Horiuchi ,  Shojiro Shibata ,  Takaaki Fuchie

发明人： Yuya Horiuchi ,  Shojiro Shibata ,  Takaaki Fuchie

IPC分类号： H04N11/02

CPC分类号： H04N19/194 ,  H04N19/11 ,  H04N19/124 ,  H04N19/14 ,  H04N19/149 ,  H04N19/15 ,  H04N19/154 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/61

摘要： To stop the decline of the quality of image associated with encoding. The present invention multiplies a decoding rescaling factor (RFr) possibly used in the decoding process by only a transformation matrix (D), which is scale change, to calculate a rescaling factor (RF), which is a plurality of division factors, and then calculates, for each detection unit, the sum (ΣY) of evaluation values (Y) based on a residue (r) obtained as a result of dividing an element of a DCT coefficient by a plurality of rescaling factors (RF). Moreover, the present invention compares correlations of the sum (ΣY) of the evaluation values (Y) with a plurality of rescaling factors (RF), and detects, based on the rescaling factor (RF) whose sum (ΣY) of the evaluation values (Y) is a minimum value, a quantization factor used in the previous process of encoding the input image data.

摘要翻译： 阻止与编码相关联的图像质量的下降。 本发明将可能在解码处理中可能使用的解码重定标因子（RFr）乘以只有作为比例变化的变换矩阵（D），以计算作为多个除数因子的重定标因子（RF），然后 基于作为将DCT系数的元素除以多个重定标因子（RF）的结果获得的残差（r），针对每个检测单元计算评估值（Y）的和（＆Sgr; Y）。 此外，本发明将评价值（Y）的和（＆Sgr; Y）与多个重定标因子（RF）的相关性进行比较，并且基于归并因子（RF），其总和（＆Sgr; Y） 评估值（Y）是最小值，在前一个编码输入图像数据的处理中使用的量化因子。

公开(公告)号：US20120057784A1

公开(公告)日：2012-03-08

申请号：US13221207

申请日：2011-08-30

申请人： Yuya Horiuchi ,  Shojiro Shibata ,  Takaaki Fuchie

发明人： Yuya Horiuchi ,  Shojiro Shibata ,  Takaaki Fuchie

IPC分类号： G06K9/36

CPC分类号： H04N19/186 ,  H04N19/124 ,  H04N19/149 ,  H04N19/176 ,  H04N19/196 ,  H04N19/40 ,  H04N19/61

摘要： An image processing apparatus includes: an orthogonal transforming section which performs an orthogonal transform for image data to generate a transform coefficient; and a quantization factor detecting section which detects a quantization factor used in a previous encoding process, using the transform coefficient, wherein the quantization factor detecting section independently performs a process of detecting the quantization factor from the transform coefficient generated by orthogonally transforming a luminance component of the image data and a process of detecting the quantization factor from the transform coefficient generated by orthogonally transforming a color difference component of the image data.

摘要翻译： 一种图像处理装置包括：正交变换部，对图像数据进行正交变换，生成变换系数; 以及量化因子检测部分，其使用所述变换系数来检测在先前编码处理中使用的量化因子，其中所述量化因子检测部分独立地执行从通过正交变换亮度分量而产生的变换系数的量化因子的检测处理 所述图像数据和从通过对所述图像数据的色差分量进行正交变换而生成的变换系数检测所述量化因子的处理。

公开(公告)号：US20110188769A1

公开(公告)日：2011-08-04

申请号：US12673186

申请日：2009-06-23

申请人： Takaaki Fuchie ,  Kyohei Koyabu ,  Shojiro Shibata ,  Kashu Takahashi ,  Yuya Horiuchi

发明人： Takaaki Fuchie ,  Kyohei Koyabu ,  Shojiro Shibata ,  Kashu Takahashi ,  Yuya Horiuchi

IPC分类号： G06K9/38

CPC分类号： H04N19/436 ,  H04N19/103 ,  H04N19/126 ,  H04N19/13 ,  H04N19/14 ,  H04N19/149 ,  H04N19/15 ,  H04N19/176 ,  H04N19/18 ,  H04N19/192 ,  H04N19/197 ,  H04N19/50 ,  H04N19/61 ,  H04N19/89 ,  H04N19/91

摘要： The present invention enables a reduction in circuit scale.In an image coding apparatus (100), as for DCT coefficients as simple coded data obtained by coding an input image (91) by simple processing, the input image (91) is coded by at least quantizing the input image (91) as an input image on the basis of selected quantization parameters (QPl) discretely selected from quantization parameters (QP) as quantization factors, thereby computing generated code sizes of the input image (91) upon coding. The image coding apparatus (100) corrects an error in the generated code sizes of the input image upon coding which occurs in accordance with the simple processing, thereby computing low-precision generated code sizes. The image coding apparatus (100) computes low-precision generated code sizes when the input image (91) is coded on the basis of quantization parameters (QP) other than the selected quantization parameters (QPl), by an interpolation process with respect to the low-precision generated code sizes when the input image (91) is coded on the basis of the selected quantization parameters (QPl).

摘要翻译： 本发明能够减小电路规模。 在图像编码装置（100）中，对于作为通过简单处理对输入图像（91）进行编码而获得的简单编码数据的DCT系数，输入图像（91）通过至少将输入图像（91）量化为 基于从量化参数（QP）离散地选择的量化参数（QP1）作为量化因子的输入图像，从而计算编码时输入图像（91）的生成代码大小。 图像编码装置（100）根据简单处理对编码后的输出图像的生成码量进行校正，从而计算出低精度生成码量。 当根据所选择的量化参数（QP1）以外的量化参数（QP）对输入图像（91）进行编码时，图像编码装置（100）通过相对于所选择的量化参数 基于选择的量化参数（QP1）对输入图像（91）进行编码时的低精度生成码量。

公开(公告)号：US08374451B2

公开(公告)日：2013-02-12

申请号：US12673216

申请日：2009-06-23

申请人： Shojiro Shibata ,  Takaaki Fuchie ,  Kashu Takahashi ,  Yuya Horiuchi

发明人： Shojiro Shibata ,  Takaaki Fuchie ,  Kashu Takahashi ,  Yuya Horiuchi

IPC分类号： G06K9/36 ,  G06K9/38 ,  G06K9/46

CPC分类号： H04N19/146 ,  H04N19/13 ,  H04N19/176 ,  H04N19/196

摘要： The present invention enables a circuit configuration to be simplified. An image encoding device (100) receives an input image (91) that is line-scanned in units of MBs as scan blocks, each constituted by a plurality of 4×4 blocks, while being scanned in units of 4×4 blocks as encoding blocks, each constituted by a plurality of pixels. The image encoding device (100) selects a VLC (variable length) table corresponding to a table selection index nC, which is an average value of the numbers nB and nA of nonzero coefficients as encoding values on which variable-length encoding is performed in upper-adjoining and left-adjoining 4×4 blocks of a 4×4 block as an encoding target in quantization coefficients as encoding target data based on the input image (91). At this time, in a case where the 4×4 block as an encoding target is at an upper end of an MB, the image encoding device (100) equates the number nB of nonzero coefficients of the upper-adjoining 4×4 block with the number nA of nonzero coefficients of the left-adjoining 4×4 block. The image encoding device (100) performs variable-length encoding on the number of nonzero coefficients of a 4×4 block as an encoding target in quantization coefficients using the selected VLC table.

摘要翻译： 本发明能够简化电路配置。 图像编码装置（100）接收以MB为单位进行线扫描的输入图像（91），作为扫描块，每个扫描块由多个4×4块构成，同时以4×4块为单位进行扫描，作为编码 每个块由多个像素构成。 图像编码装置（100）选择与表选择索引nC对应的VLC（可变长度）表，该表选择索引nC是非零系数的数字nB和nA的平均值，作为在上部执行可变长度编码的编码值 基于输入图像（91），作为编码对象数据的量化系数中的4×4块作为编码对象的4相邻4×4块。 此时，在作为编码对象的4×4块位于MB的上端的情况下，图像编码装置（100）将上邻接的4×4块的非零系数的数量nB等同于 左邻接4×4块的非零系数的数量nA。 图像编码装置（100）使用所选择的VLC表对量化系数中的4×4块的非零系数的数量作为编码对象进行可变长度编码。

公开(公告)号：US20100098173A1

公开(公告)日：2010-04-22

申请号：US12530828

申请日：2008-09-12

申请人： Yuya Horiuchi ,  Shojiro Shibata ,  Takaaki Fuchie

发明人： Yuya Horiuchi ,  Shojiro Shibata ,  Takaaki Fuchie

IPC分类号： H04N7/30

CPC分类号： H04N19/194 ,  H04N19/11 ,  H04N19/124 ,  H04N19/14 ,  H04N19/149 ,  H04N19/15 ,  H04N19/154 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/61

摘要： To stop the decline of the quality of image associated with encoding. The present invention multiplies a decoding rescaling factor (RFr) possibly used in the decoding process by only a transformation matrix (D), which is scale change, to calculate a rescaling factor (RF), which is a plurality of division factors, and then calculates, for each detection unit, the sum (ΣY) of evaluation values (Y) based on a residue (r) obtained as a result of dividing an element of a DCT coefficient by a plurality of rescaling factors (RF). Moreover, the present invention compares correlations of the sum (ΣY) of the evaluation values (Y) with a plurality of rescaling factors (RF), and detects, based on the rescaling factor (RF) whose sum (ΣY) of the evaluation values (Y) is a minimum value, a quantization factor used in the previous process of encoding the input image data.

摘要翻译： 阻止与编码相关联的图像质量的下降。 本发明将可能在解码处理中可能使用的解码重定标因子（RFr）乘以只有作为比例变化的变换矩阵（D），以计算作为多个除数因子的重定标因子（RF），然后 基于作为将DCT系数的元素除以多个重定标因子（RF）的结果获得的残差（r），针对每个检测单元计算评估值（Y）的和（＆Sgr; Y）。 此外，本发明将评价值（Y）的和（＆Sgr; Y）与多个重定标因子（RF）的相关性进行比较，并且基于归并因子（RF），其总和（＆Sgr; Y） 评估值（Y）是最小值，在前一个编码输入图像数据的处理中使用的量化因子。

公开(公告)号：US20100046621A1

公开(公告)日：2010-02-25

申请号：US12530872

申请日：2008-09-12

申请人： Yuya Horiuchi ,  Shojiro Shibata ,  Takaaki Fuchie

发明人： Yuya Horiuchi ,  Shojiro Shibata ,  Takaaki Fuchie

IPC分类号： H04N7/32

CPC分类号： H04N19/146 ,  H04N19/11 ,  H04N19/124 ,  H04N19/134 ,  H04N19/61

摘要： The present invention can suppress the decline in video quality during encoding. The present invention generates, for each of the nine intra image prediction modes preset according to the AVC standard, a difference image data item containing a difference value from pixels surrounding a process-target pixel. Then, an encoding device (10) ranks the intra image prediction modes depending on the sum of absolute difference (SAD), which is the sum of differences that is based on the sum of absolute values of each process-target pixel of the difference image data item and a preference order of offset[n] preset for the intra image prediction mode.

摘要翻译： 本发明可以抑制编码期间视频质量的下降。 本发明为根据AVC标准预设的九个帧内图像预测模式中的每一个产生包含与处理目标像素周围的像素的差值的差分图像数据项。 然后，编码装置（10）根据作为基于差分图像的每个处理目标像素的绝对值之和的差的和的绝对差（SAD）的和来对帧内图像预测模式进行排序 数据项和对于内部图像预测模式预设的偏移量[n]的偏好顺序。