Quantization method and apparatus in encoding/decoding
    65.
    发明授权
    Quantization method and apparatus in encoding/decoding 有权
    编码/解码中的量化方法和装置

    公开(公告)号:US09258568B2

    公开(公告)日:2016-02-09

    申请号:US12210890

    申请日:2008-09-15

    摘要: A method and apparatus is provided for implementing quantization in encoding/decoding. Firstly, the quantization on the picture transformed coefficient matrix is performed using a quantization parameter model, that is, the coefficient matrix is modeled as a parameter model represented by only several parameters, in which the parameter model includes two sorts of parameters, frequency band distribution parameters and frequency band weighting parameters. Thus, a quantization matrix conforming to the human vision system can be obtained by controlling the model parameters and the subjective quality of the encoded picture can be easily controlled. Secondly, the method does not need to store or transfer the quantization matrix in the bitstream which help to improve the encoding efficiency. Finally, the quantization on picture transformed coefficients using the method is well adapted to the content information of the picture to be encoded. Therefore, the present invention can improve the subjective quality of the encoded picture.

    摘要翻译: 提供了一种用于在编码/解码中实现量化的方法和装置。 首先,使用量化参数模型来执行对图像变换系数矩阵的量化,即,将系数矩阵建模为仅由几个参数表示的参数模型,其中参数模型包括两种参数,频带分布 参数和频带加权参数。 因此,可以通过控制模型参数来获得符合人类视觉系统的量化矩阵,并且可以容易地控制编码图像的主观质量。 其次,该方法不需要存储或传送比特流中的量化矩阵,这有助于提高编码效率。 最后,使用该方法的图像变换系数的量化很好地适应于要编码的图像的内容信息。 因此,本发明可以提高编码图像的主观质量。

    Method and device for multi-view encoding/decoding using disparity vector
    68.
    发明授权
    Method and device for multi-view encoding/decoding using disparity vector 有权
    使用差异向量进行多视图编码/解码的方法和装置

    公开(公告)号:US08594193B2

    公开(公告)日:2013-11-26

    申请号:US12239226

    申请日:2008-09-26

    IPC分类号: H04N7/12 H04N11/02 H04N11/04

    CPC分类号: H04N19/597

    摘要: A method of obtaining a disparity vector and its encoding/decoding in the multi-view coding process is disclosed. The present invention includes essentially: determining a disparity vector between two views during the multi-view image coding, and computing a disparity vector between the other two views according to the disparity vector between the two views and the known relative location information between each of the views. Thereafter, the disparity vector is used for multi-view encoding/decoding. The present invention further makes use of the correlation between the disparity vector and depth information of the spatial vector on one hand, and on the other hand makes use of the direct relationship between the disparity vector and the location of each of the cameras. It is experimentally proved that the disparity vector between several views can be accurately computed during the multi-view coding, thereby improving the performance of multi-view coding.

    摘要翻译: 公开了一种在多视图编码处理中获得视差矢量及其编码/解码的方法。 本发明基本上包括:在多视图图像编码期间确定两个视图之间的视差向量,以及根据两个视图之间的视差矢量和每个视图之间的已知相对位置信息来计算其他两个视图之间的视差矢量 意见 此后,视差矢量用于多视图编码/解码。 本发明进一步利用视差矢量与空间矢量的深度信息之间的相关性,另一方面利用视差矢量与每个摄像机的位置之间的直接关系。 实验证明,可以在多视图编码期间精确地计算出几个视图之间的视差矢量,从而提高了多视图编码的性能。

    Image interpolation method and apparatus, and method for obtaining interpolation coefficients
    69.
    发明授权
    Image interpolation method and apparatus, and method for obtaining interpolation coefficients 有权
    图像插值方法和装置,以及用于获得插值系数的方法

    公开(公告)号:US08428396B2

    公开(公告)日:2013-04-23

    申请号:US12794557

    申请日:2010-06-04

    IPC分类号: G06K9/38 G06K9/32

    CPC分类号: H04N19/59 H04N19/593

    摘要: An image interpolation method includes: obtaining pixel values of integer pixel points and/or sub-pixel points in the row, column or any other directions of pixel points; obtaining pre-calculated interpolation coefficients, and interpolating the pixel points. A method for obtaining image interpolation coefficients includes: solving a one-dimensional Wiener-Hopf equation to obtain needed interpolation coefficients in different directions. An image interpolation apparatus performs interpolation filter processing on pixel points by using a first obtaining module, a second obtaining module, and a first calculating module. With the image interpolation method and apparatus, and the method for obtaining interpolation coefficients, the interpolation filter accuracy of the pixel points may be improved, the search accuracy of pixel points may be improved, and thus a more accurate matching block may be obtained in a reference image.

    摘要翻译: 图像插值方法包括:获得像素点的行,列或任何其它方向上的整数像素点和/或子像素点的像素值; 获得预先计算的内插系数,并内插像素点。 一种用于获得图像内插系数的方法包括:求解一维维纳 - 霍夫方程以获得不同方向的所需内插系数。 图像插值装置通过使用第一获取模块,第二获取模块和第一计算模块对像素点进行插值滤波处理。 利用图像插值方法和装置以及获得插值系数的方法,可以提高像素点的内插滤波精度,可以提高像素点的搜索精度,从而可以获得更准确的匹配块 参考图像。