Blur measurement in a block-based compressed image
    1.
    发明授权
    Blur measurement in a block-based compressed image 有权
    基于块的压缩图像中的模糊测量

    公开(公告)号:US09497468B2

    公开(公告)日:2016-11-15

    申请号:US13138600

    申请日:2010-02-26

    摘要: Blur is one of the most important features related to video quality. Accurate estimating the blur level of a video is a great help to accurately evaluate the video quality. An improved method is provided for estimating the blur level of videos that are compressed by a block based codec, such as H.264/AVC, MPEG2, etc. According to the invention, local blur detection is based on macroblock (MB) edges, a content dependent weighting scheme is employed to decrease the influence from texture and when detecting local blur, the spreading of detection will stop at local minimum and maximum luminance positions.

    摘要翻译: 模糊是与视频质量相关的最重要的功能之一。 准确估计视频的模糊级别对于准确评估视频质量是一个很大的帮助。 提供了一种改进的方法来估计由诸如H.264 / AVC,MPEG2等的基于块的编解码器压缩的视频的模糊级别。根据本发明,局部模糊检测基于宏块(MB)边缘, 采用内容相关加权方案来减小纹理的影响,并且当检测局部模糊时,检测的扩展将在局部最小和最大亮度位置停止。

    METHOD AND DEVICE FOR AUTOMATIC PREDICTION OF A VALUE ASSOCIATED WITH A DATA TUPLE
    2.
    发明申请
    METHOD AND DEVICE FOR AUTOMATIC PREDICTION OF A VALUE ASSOCIATED WITH A DATA TUPLE 审中-公开
    用于自动预测与数据轮相关的数值的方法和装置

    公开(公告)号:US20130211803A1

    公开(公告)日:2013-08-15

    申请号:US13879407

    申请日:2010-10-18

    IPC分类号: G06F17/50

    摘要: The invention relates to a method and a device for automatic prediction of a current value using a weighted average of a number of current reference values, wherein the current value is associated with a current pair consisting of a first and a second current data tuple. The method comprises using a set of reference pairs, each reference pair consisting of a first and a second reference data tuple and being associated with a reference value, for selecting the current reference values wherein the first reference data tuples, the first current data tuple and a first metric is used for selecting, determining, for each current reference value, an associated weight using the second reference data tuples of the pair associated with the respective selected reference value, the second current data tuple and a second metric, and using the current reference values and the determined weights for determining the weighted average.

    摘要翻译: 本发明涉及一种使用多个当前参考值的加权平均来自动预测当前值的方法和装置,其中当前值与由第一和第二当前数据元组组成的当前对相关联。 该方法包括使用一组参考对,每个参考对由第一和第二参考数据元组组成并与参考值相关联,用于选择当前参考值,其中第一参考数据元组,第一当前数据元组和 第一度量用于使用与相应选择的参考值,第二当前数据元组和第二度量相关联的对的第二参考数据元组来选择,确定每个当前参考值相关联的权重,并且使用当前 参考值和确定加权平均值的确定权重。

    METHOD AND APPARATUS FOR DETERMINING BLUR IN AN IMAGE
    3.
    发明申请
    METHOD AND APPARATUS FOR DETERMINING BLUR IN AN IMAGE 有权
    用于确定图像中的图像的方法和装置

    公开(公告)号:US20110317768A1

    公开(公告)日:2011-12-29

    申请号:US13138600

    申请日:2010-02-26

    摘要: Blur is one of the most important features related to video quality. Accurate estimating the blur level of a video is a great help to accurately evaluate the video quality. An improved method is provided for estimating the blur level of videos that are compressed by a block based codec, such as H.264/AVC, MPEG2, etc. According to the invention, local blur detection is based on macroblock (MB) edges, a content dependent weighting scheme is employed to decrease the influence from texture and when detecting local blur, the spreading of detection will stop at local minimum and maximum luminance positions.

    摘要翻译: 模糊是与视频质量相关的最重要的功能之一。 准确估计视频的模糊级别对于准确评估视频质量是一个很大的帮助。 提供了一种改进的方法来估计由诸如H.264 / AVC,MPEG2等的基于块的编解码器压缩的视频的模糊级别。根据本发明,局部模糊检测基于宏块(MB)边缘, 采用内容相关加权方案来减小纹理的影响,并且当检测局部模糊时,检测的扩展将在局部最小和最大亮度位置停止。

    Method for determining a quality measure for a video image and apparatus for determining a quality measure for a video image
    4.
    发明授权
    Method for determining a quality measure for a video image and apparatus for determining a quality measure for a video image 有权
    用于确定视频图像的质量测量的方法和用于确定视频图像的质量测量的装置

    公开(公告)号:US08842184B2

    公开(公告)日:2014-09-23

    申请号:US13320553

    申请日:2010-11-18

    IPC分类号: H04N17/00

    CPC分类号: H04N17/004

    摘要: Accurately estimating the image quality of video is still difficult, especially when there is no reference video available. A method for determining a quality measure for a video image comprises selecting a measuring point, such as a MB, determining a context area around the measuring point, calculating a variance of pixel values in the context area, calculating a variance of pixel values in the measuring point, calculating a relation between the two variances of pixel values, and averaging said relations for a plurality of measuring points, wherein a quality measure for a video image is obtained.

    摘要翻译: 准确估计视频的图像质量仍然很困难,特别是当没有可用的参考视频时。 一种用于确定视频图像的质量测量的方法包括:选择测量点,诸如MB,确定测量点周围的上下文区域,计算上下文区域中的像素值的方差,计算像素值的方差 测量点,计算像素值的两个方差之间的关系,以及平均用于多个测量点的所述关系,其中获得视频图像的质量测量。

    Method and apparatus for measuring quality of video based on frame loss pattern
    5.
    发明授权
    Method and apparatus for measuring quality of video based on frame loss pattern 有权
    基于帧丢失模式测量视频质量的方法和装置

    公开(公告)号:US08970710B2

    公开(公告)日:2015-03-03

    申请号:US13989130

    申请日:2010-11-30

    IPC分类号: H04N17/00 H04N17/02

    CPC分类号: H04N17/00 H04N17/004

    摘要: A method and apparatus for measuring the quality of a video is provided. The method comprises: generating a frame loss pattern of the video by indicating whether each frame in the video is lost or successfully transmitted; and evaluating the quality of the video as a function of the generated t came loss pattern.

    摘要翻译: 提供了一种用于测量视频质量的方法和装置。 该方法包括:通过指示视频中的每个帧是丢失还是成功发送来产生视频的帧丢失模式; 并且根据所产生的损失模式评估视频的质量。

    METHOD AND APPARATUS FOR MEASURING QUALITY OF VIDEO BASED ON FRAME LOSS PATTERN
    6.
    发明申请
    METHOD AND APPARATUS FOR MEASURING QUALITY OF VIDEO BASED ON FRAME LOSS PATTERN 有权
    用于测量基于帧丢失模式的视频质量的方法和装置

    公开(公告)号:US20130235214A1

    公开(公告)日:2013-09-12

    申请号:US13989130

    申请日:2010-11-30

    IPC分类号: H04N17/00

    CPC分类号: H04N17/00 H04N17/004

    摘要: A method and apparatus for measuring the quality of a video is provided. The method comprises: generating a frame loss pattern of the video by indicating whether each frame in the video is lost or successfully transmitted; and evaluating the quality of the video as a function of the generated t came loss pattern.

    摘要翻译: 提供了一种用于测量视频质量的方法和装置。 该方法包括:通过指示视频中的每个帧是丢失还是成功发送来产生视频的帧丢失模式; 并且根据所产生的损失模式来评估视频的质量。

    METHOD FOR DETERMINING A QUALITY MEASURE FOR A VIDEO IMAGE AND APPARATUS FOR DETERMINING A QUALITY MEASURE FOR A VIDEO IMAGE
    7.
    发明申请
    METHOD FOR DETERMINING A QUALITY MEASURE FOR A VIDEO IMAGE AND APPARATUS FOR DETERMINING A QUALITY MEASURE FOR A VIDEO IMAGE 有权
    用于确定视频图像的质量测量的方法和用于确定视频图像的质量度量的装置

    公开(公告)号:US20130070106A1

    公开(公告)日:2013-03-21

    申请号:US13320553

    申请日:2010-11-18

    IPC分类号: H04N17/00

    CPC分类号: H04N17/004

    摘要: Accurately estimating the image quality of video is still difficult, especially when there is no reference video available. A method for determining a quality measure for a video image comprises selecting a measuring point, such as a MB, determining a context area around the measuring point, calculating a variance of pixel values in the context area, calculating a variance of pixel values in the measuring point, calculating a relation between the two variances of pixel values, and averaging said relations for a plurality of measuring points, wherein a quality measure for a video image is obtained.

    摘要翻译: 准确估计视频的图像质量仍然很困难,特别是当没有可用的参考视频时。 一种用于确定视频图像的质量测量的方法包括:选择测量点,诸如MB,确定测量点周围的上下文区域,计算上下文区域中的像素值的方差,计算像素值的方差 测量点,计算像素值的两个方差之间的关系,以及平均用于多个测量点的所述关系,其中获得视频图像的质量测量。