公开(公告)号：EP2323407A1

公开(公告)日：2011-05-18

申请号：EP09773192.1

申请日：2009-07-02

申请人： Panasonic Corporation

发明人： NARROSCHKE, Matthias ,  WITTMANN, Steffen ,  WEDI, Thomas

IPC分类号： H04N7/50

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/192 ,  H04N19/61 ,  H04N19/82 ,  H04N19/85

摘要： A video coding method according to the present invention is for coding a signal to be coded which represents a video, and includes: generating a prediction signal predictive of the signal to be coded, based on a coded signal coded prior to the coding of the signal to be coded (S16); quantizing a prediction error obtained by subtracting the prediction signal from the signal to be coded to generate quantized coefficients (S12); inversely quantizing the quantized coefficients to generate a quantized prediction error signal (S13); generating first filter information, based on statistical properties of only the prediction signal among the prediction signal and the quantized prediction error signal, and generating second filter information, based on statistical properties of only the quantized prediction error signal among the prediction signal and the quantized prediction error signal (S14); and performing entropy coding on the quantized coefficients generated in the quantizing and the first and second filter information generated in the generating of filter information so as to generate a coded signal (S15).

摘要翻译： 一种视频编码方法雅丁，本发明是一种用于编码要编码哪个darstellt一个视频信号，并且包括：产生所述信号的预测信号的预测进行编码，基于之前的信号的编码的编码的编码信号 要被编码（S16）; 量化由从信号中减去所述预测信号而得到的预测误差进行编码，以产生经量化系数（S12）; 逆量化量化的系数，以生成量化预测误差信号（S13）; 生成第一滤波器信息，仅基于所述预测信号和所述量化预测误差信号，并且生成第二滤波器信息中的预测信号的统计特性，仅基于所述预测信号和所述量化预测之间的量化预测误差信号的统计特性 误差信号（S14）; 和执行熵编码对量化和在过滤器信息产生装置产生，以便生成编码信号（S15）所述第一和第二滤波器信息生成的量化系数。

公开(公告)号：EP2157796A1

公开(公告)日：2010-02-24

申请号：EP08764069.4

申请日：2008-06-10

申请人： Panasonic Corporation

发明人： WEDI, Thomas ,  KNICKER, Florian

IPC分类号： H04N7/26

CPC分类号： G06T5/50 ,  H04N19/117 ,  H04N19/154 ,  H04N19/172 ,  H04N19/192 ,  H04N19/46 ,  H04N19/60 ,  H04N19/61 ,  H04N19/80

摘要： The present invention relates to processing an image by using a statistical property of a reference image. An image enhancing apparatus according to the present invention includes: a first image processing unit (120) and a second processing unit (130) which receive an input image, receive statistical properties of a difference image, generate a filter based on the statistical properties of the difference image which have been received by the property receiving unit, and apply the filter to the input image so as to generate a filtered image; and an adder (140) which adds the filtered image to the input image so as to generate an output image.

摘要翻译： 本发明涉及通过使用参考图像的统计特性来处理图像。 根据本发明的图像增强设备包括：第一图像处理单元（120）和第二处理单元（130），其接收输入图像，接收差分图像的统计特性，基于统计特性来生成滤波器 所述属性接收单元接收到的所述差分图像，并将所述滤波器应用于所述输入图像以生成滤波图像; 和加法器（140），将滤波图像与输入图像相加以生成输出图像。

公开(公告)号：EP2104355A1

公开(公告)日：2009-09-23

申请号：EP07860507.8

申请日：2007-12-28

申请人： Panasonic Corporation

发明人： WITTMANN, Steffen ,  WEDI, Thomas

IPC分类号： H04N7/26

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/136 ,  H04N19/14 ,  H04N19/157 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/46 ,  H04N19/61 ,  H04N19/80

摘要： The present invention provides an image coding apparatus and an image decoding apparatus capable of enhancing the image quality of decoded image data.
The image coding method according to the present invention is intended for coding an input image, and includes: coding the input image to generate a coded image; assigning each of areas in a picture included in the input image to a corresponding one of groups, and generating filter data for each of the groups; and outputting a coded stream including the coded image generated in the coding and the filter data generated in the generating.

摘要翻译： 本发明提供能够提高解码图像数据的图像质量的图像编码装置和图像解码装置。 根据本发明的图像编码方法用于编码输入图像，并且包括：编码输入图像以生成编码图像; 将输入图像中包括的图片中的每个区域分配给组中的相应一个，并且为每个组生成滤波器数据; 并输出包括在编码中产生的编码图像和在产生中产生的滤波数据的编码流。

公开(公告)号：EP2564593A1

公开(公告)日：2013-03-06

申请号：EP11717193.4

申请日：2011-04-26

申请人： Panasonic Corporation

发明人： WITTMANN, Steffen ,  DRUGEON, Virginie ,  NARROSCHKE, Matthias ,  WEDI, Thomas

IPC分类号： H04N7/26 ,  H04N7/34

CPC分类号： H04N19/50 ,  H04N19/00763 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/593 ,  H04N19/80 ,  H04N19/82

摘要： The present invention relates to intra prediction which may be performed during encoding and/or decoding of an image signal. In particular, the present invention relates to intra prediction of a current block, during which filtering is applied to the prediction signal and/or to signal used for the prediction. The filtering is applied in accordance with a decision based on characteristics of image signal included in block(s) spatially adjacent to the current block.

摘要翻译： 本发明涉及可在图像信号的编码和/或解码期间执行的帧内预测。 具体而言，本发明涉及对预测信号进行滤波和/或用于预测的信号的当前块的帧内预测。 根据与当前块空间相邻的块中包括的图像信号的特性的决定，应用滤波。

公开(公告)号：EP2141931A1

公开(公告)日：2010-01-06

申请号：EP08751578.9

申请日：2008-04-18

申请人： Panasonic Corporation

发明人： WITTMANN, Steffen ,  WEDI, Thomas

IPC分类号： H04N7/32

CPC分类号： H04N19/523 ,  H04N19/117 ,  H04N19/139 ,  H04N19/147 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/82

摘要： A method for efficiently determining an appropriate filter coefficient of a two-dimensional adaptive interpolation filter with less calculation, the method including: a motion estimating step (S100) of estimating at sub-pel resolution, for each of blocks constituting a current picture, a motion of an image of the block from a reference picture as a motion vector; an identifying step (S102) of identifying at least one block having a motion vector specifying a sub-pel position (p, q) on the reference picture from among the blocks having motion vectors estimated at sub-pel resolution; and a determining step (S104) of determining a filter coefficient of the sub-pel position (p, q) based on an image of the at least one block identified in the identifying step and an image of at least one block of the reference picture specified by the motion vector of the at least one block identified in the identifying step.

摘要翻译： 用更少的计算上的二维自适应内插滤波器的适当的滤波系数高效确定性采矿的方法，该方法包括：在子像素分辨率估计的运动估计步骤（S100），对于每一个构成当前图像块的，一个 从参考图片作为运动矢量的块的图像的运动; 在识别步骤识别具有的运动矢量指定从具有估计在子像素分辨率运动矢量的块中的参考图片中的子像素位置（P，Q）的至少一个块的（S102）; 和基于在识别步骤中识别的所述至少一个块的图像上的确定性采矿步骤确定性采矿的（S104）的子像素位置的滤波器系数（P，Q）和基准画面的至少一个块的图像 通过在识别步骤中识别的所述至少一个块的运动向量所指定。

公开(公告)号：EP2088785A1

公开(公告)日：2009-08-12

申请号：EP07832547.9

申请日：2007-11-27

申请人： Panasonic Corporation

发明人： WEDI, Thomas ,  KNICKER, Florian

IPC分类号： H04N7/30

CPC分类号： H04N19/12 ,  H04N19/1883 ,  H04N19/61 ,  H04N19/619 ,  H04N19/63

摘要： The present invention has been conceived to solve the previously described problems, and provides a texture representation method without any unnatural feeling while performing data compression equivalent to a conventional data compression or more. An input signal is separated in two frequency domains. The low-frequency component is faithfully coded by a conventional image/video coding apparatus. The high-frequency component is analyzed to compute representative texture parameters. Instead of faithfully coding the high-frequency component, only the computed texture parameters are stored or transmitted to a decoding apparatus. Then, the low-frequency component is reconstructed, whereas the high-frequency component is replaced by a natural texture that has been synthesized according to the texture parameters. The reconstructed low-frequency component and the synthesized high-frequency component are merged to generate an output signal.

摘要翻译： 已经设想了本发明以解决前面提到的问题，并且提供了在执行与传统数据压缩等同的数据压缩时没有任何不自然的感觉的纹理表示方法。 输入信号在两个频域中分离。 低频分量由传统的图像/视频编码装置忠实地编码。 分析高频分量以计算代表性的纹理参数。 代替对高频分量进行忠实编码，仅将所计算的纹理参数存储或传送到解码装置。 然后，重构低频分量，而高频分量由根据纹理参数合成的自然纹理代替。 将重建的低频分量和合成的高频分量合并以产生输出信号。

公开(公告)号：EP2001239A9

公开(公告)日：2009-03-25

申请号：EP07739618.2

申请日：2007-03-26

申请人： Panasonic Corporation

发明人： WITTMANN, Steffen ,  WEDI, Thomas

IPC分类号： H04N7/32

CPC分类号： H04N19/117 ,  H04N19/14 ,  H04N19/154 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/177 ,  H04N19/46 ,  H04N19/50 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86

摘要： Provide is an image decoding apparatus which reliably prevents deterioration of the image quality of decoded images which have been previously coded. An image decoding apparatus (200) includes: an inverse quantization and inverse orthogonal transform unit (220) and an adder (230) which decode a coded image included in a coded stream (Str) to generate a decoded image (Rc); an entropy decoding unit (210) which extracts cross-correlation data (p) which indicates a cross-correlation between the decoded image (Rc) and an image which corresponds to the decoded image and has not yet been coded; and an adaptive filter (240) which computes a filter parameter (w) based on the extracted cross-correlation data (p), and performs a filtering operation on the decoded image (Rc) according to the filter parameter (w).

公开(公告)号：EP2754295A1

公开(公告)日：2014-07-16

申请号：EP12769971.8

申请日：2012-09-06

申请人： Panasonic Corporation

发明人： NARROSCHKE, Matthias ,  ESENLIK, Semih ,  WEDI, Thomas

IPC分类号： H04N7/26

CPC分类号： H04N19/865 ,  H04N19/117 ,  H04N19/124 ,  H04N19/13 ,  H04N19/136 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/82 ,  H04N19/86

摘要： The present invention relates to deblocking filtering, which may be advantageously applied for block-wise encoding and decoding of images or video signals. In particular, the present invention relates to an improved memory management in an automated decision on whether to apply or skip deblocking filtering for a block and to selection of the deblocking filter. The decision is performed on the basis of a segmentation of blocks in such a manner that memory usage is optimized. Preferably, the selection of appropriate deblocking filters is improved so as to reduce computational expense.

摘要翻译： 本公开涉及去块滤波，其可以有利地应用于图像或视频信号的块式编码和解码。 特别地，本公开涉及在对块应用或跳过去块滤波以及去块滤波器的选择的自动决定中的改进的存储器管理。 基于块的分割来执行该决定，使得存储器使用被优化。 优选地，改进适当的去块滤波器的选择，以便减少计算费用。

公开(公告)号：EP2299715A1

公开(公告)日：2011-03-23

申请号：EP09794174.4

申请日：2009-07-07

申请人： Panasonic Corporation

发明人： NARROSCHKE, Matthias ,  WEDI, Thomas

IPC分类号： H04N7/26

CPC分类号： H04N1/646 ,  H04N19/186 ,  H04N19/46 ,  H04N19/59

摘要： An image coding method includes transforming a color space of a color image from a first color space to a second color space to generate a color space transformed color image (S12), removing part of samples included in the color space transformed color image to generate a subsampled color image (S13), coding the subsampled color image to generate a coded color image (S14), determining an upsampling coefficient used for upsampling (S16), determining a color space inverse transform coefficient for inversely transforming the color space from the second color space to the first color space (S17), and outputting the coded color image, the upsampling coefficient, and the color space inverse transform coefficient (S19).

摘要翻译： 图像编码方法包括将彩色图像的颜色空间从第一颜色空间变换为第二颜色空间以生成色空间变换彩色图像（S12），去除包含在色空间变换色图像中的部分样本，以生成 对采样的彩色图像进行编码以生成编码的彩色图像（S14），确定用于上采样的上采样系数（S16），确定用于从第二颜色逆变换颜色空间的色空间逆变换系数 空间到第一颜色空间（S17），并输出编码的彩色图像，上采样系数和色空间逆变换系数（S19）。

公开(公告)号：EP2230851A1

公开(公告)日：2010-09-22

申请号：EP09702704.9

申请日：2009-01-16

申请人： Panasonic Corporation

发明人： DRUGEON, Virginie ,  WEDI, Thomas ,  PALFNER, Thorsten ,  SASAI, Hisao

IPC分类号： H04N7/32

CPC分类号： H04N19/176 ,  H04N19/11 ,  H04N19/14 ,  H04N19/51 ,  H04N19/593

摘要： Provided is an image coding method for performing intra prediction achieving higher coding efficiency. The method for coding image data on a block-by-block basis includes: generating a predicted block by predicting a current block; computing a difference between the current block and the predicted block; coding the difference computed in the computing; decoding the difference coded in the coding; and adding the difference decoded in the decoding to the predicted block to generate a decoded block, wherein the generating includes: detecting an edge in a previously decoded block corresponding to a block adjacent to the current block; and extrapolating or interpolating previously decoded image data corresponding to a pixel included in the block adjacent to the current block, along a direction of the edge detected in the detecting to generate the predicted block.

摘要翻译： 提供一种用于执行实现更高编码效率的帧内预测的图像编码方法。 在逐块的基础上编码图像数据的方法包括：通过预测当前块来产生预测块; 计算当前块和预测块之间的差; 编码计算中计算的差值; 对在编码中编码的差分进行解码; 并将解码中解码的差分加到所述预测块以产生解码块，其中所述生成包括：检测对应于与所述当前块相邻的块的先前解码块中的边缘; 并且沿着在检测中检测到的边缘的方向外插或内插与包括在与当前块相邻的块中的像素对应的先前解码图像数据，以生成预测块。