Method and apparatus for joint quantization parameter adjustment
    82.
    发明授权
    Method and apparatus for joint quantization parameter adjustment 有权
    联合量化参数调整的方法和装置

    公开(公告)号:US08848788B2

    公开(公告)日:2014-09-30

    申请号:US12800263

    申请日:2010-05-12

    摘要: The present principles provides a method and apparatus for jointly adjusting the rounding offset and the quantization step size on a macroblock level to improve the perceptual quality of the fine details of the encoded image. In one implementation, the content of the pictures is analyzed and the smooth regions are identified. A quantization step size value for the picture is initially defined and a rounding offset is adaptively assigned to each macroblock based on the content characteristics. The quantization step size is then calculated for the a particular macroblock according to another content characteristic of the macroblock such that the encoding of the particular macroblock is performed in response to the calculated quantization step size and the rounding offset value of the first block.

    摘要翻译: 本发明提供了一种用于在宏块级别上联合调整舍入偏移量和量化步长的方法和装置,以提高编码图像的精细细节的感知质量。 在一个实现中,分析图像的内容并且识别平滑区域。 最初定义图像的量化步长值,并且基于内容特征对每个宏块自适应地分配舍入偏移。 然后根据宏块的另一内容特性,针对特定宏块计算量化步长,使得响应于计算出的量化步长和第一块的舍入偏移值执行特定宏块的编码。

    METHOD AND APPARATUS FOR RATE CONTROL ACCURACY IN VIDEO ENCODING
    83.
    发明申请
    METHOD AND APPARATUS FOR RATE CONTROL ACCURACY IN VIDEO ENCODING 有权
    视频编码中速率控制精度的方法与装置

    公开(公告)号:US20110051807A1

    公开(公告)日:2011-03-03

    申请号:US12735441

    申请日:2009-01-15

    IPC分类号: H04N7/26

    摘要: A method and apparatus are provided for rate control accuracy in video encoding. The apparatus includes a video encoder for encoding image data in a single encoding pass using rate control. The rate control involves defining a quantization step size value and a rounding offset value and refining at least the rounding offset value. The image data is encoded responsive to the quantization step size value and the refined rounding offset value.

    摘要翻译: 提供了一种用于视频编码中的速率控制精度的方法和装置。 该装置包括用于使用速率控制在单个编码通道中对图像数据进行编码的视频编码器。 速率控制涉及定义量化步长值和舍入偏移值,并且至少精炼舍入偏移值。 响应于量化步长值和精化舍入偏移值来编码图像数据。

    Method and apparatus for reusing available motion information as a motion estimation predictor for video encoding
    85.
    发明授权
    Method and apparatus for reusing available motion information as a motion estimation predictor for video encoding 有权
    用于将可用的运动信息重新用作用于视频编码的运动估计预测器的方法和装置

    公开(公告)号:US08634469B2

    公开(公告)日:2014-01-21

    申请号:US12087915

    申请日:2007-02-01

    摘要: There are provided a method and apparatus for reusing available motion information as a motion estimation predictor for video encoding. The apparatus includes an encoder for encoding an image block by determining a motion estimation predictor for the image block using motion information previously generated from an element other than the encoder, and using the motion estimation predictor in a motion estimation process to generate a motion vector for the image block. The motion estimation predictor is used in place of at least one predictor otherwise used in the motion estimation process. The at least one predictor is any of a search window predictor, a temporal predictor, and a block type predictor.

    摘要翻译: 提供了一种用于将可用的运动信息重新用作用于视频编码的运动估计预测器的方法和装置。 该装置包括编码器,用于通过使用先前从编码器之外的元素生成的运动信息确定图像块的运动估计预测器,并且在运动估计处理中使用运动估计预测器来生成运动矢量 图像块。 使用运动估计预测器代替否则在运动估计过程中使用的至少一个预测器。 所述至少一个预测器是搜索窗口预测器,时间预测器和块类型预测器中的任何一个。

    METHOD AND APPARATUS FOR FAST GEOMETRIC MODE DESICION IN A VIDEO ENCODER
    86.
    发明申请
    METHOD AND APPARATUS FOR FAST GEOMETRIC MODE DESICION IN A VIDEO ENCODER 有权
    用于视频编码器中快速几何模态的方法和装置

    公开(公告)号:US20100118959A1

    公开(公告)日:2010-05-13

    申请号:US12450695

    申请日:2008-04-03

    IPC分类号: H04N7/12

    摘要: There are provided methods and apparatus for fast geometric mode decision in a video encoder. An apparatus includes an encoder (100) for performing a non-exhaustive geometric mode decision using geometric model-based partitioning modes. The encoder (100) skips a testing of the geometric model-based partitioning modes based on at least one of a correlation and a dependence between the geometric model-based partitioning modes and non-geometric partitioning modes.

    摘要翻译: 提供了在视频编码器中快速几何模式决定的方法和装置。 一种装置包括用于使用基于几何模型的分割模式来执行非穷尽几何模式决定的编码器(100)。 基于基于几何模型的分割模式和非几何分割模式之间的相关性和依赖性中的至少一个,编码器(100)跳过对基于几何模型的分割模式的测试。

    Method and Apparatus For Reusing Available Motion Information as a Motion Estimation Predictor For Video Encoding
    87.
    发明申请
    Method and Apparatus For Reusing Available Motion Information as a Motion Estimation Predictor For Video Encoding 有权
    用于将可用的运动信息重新用作用于视频编码的运动估计预测器的方法和装置

    公开(公告)号:US20090168884A1

    公开(公告)日:2009-07-02

    申请号:US12087915

    申请日:2007-02-01

    IPC分类号: H04N7/26

    摘要: There are provided a method and apparatus for reusing available motion information as a motion estimation predictor for video encoding. The apparatus includes an encoder for encoding an image block by determining a motion estimation predictor for the image block using motion information previously generated from an element other than the encoder, and using the motion estimation predictor in a motion estimation process to generate a motion vector for the image block. The motion estimation predictor is used in place of at least one predictor otherwise used in the motion estimation process. The at least one predictor is any of a search window predictor, a temporal predictor, and a block type predictor.

    摘要翻译: 提供了一种用于将可用的运动信息重新用作用于视频编码的运动估计预测器的方法和装置。 该装置包括编码器,用于通过使用先前从编码器之外的元素生成的运动信息确定图像块的运动估计预测器,并且在运动估计处理中使用运动估计预测器来生成运动矢量 图像块。 使用运动估计预测器代替否则在运动估计过程中使用的至少一个预测器。 所述至少一个预测器是搜索窗口预测器,时间预测器和块类型预测器中的任何一个。

    Fast Intra Mode Prediction for a Video Encoder
    88.
    发明申请
    Fast Intra Mode Prediction for a Video Encoder 有权
    视频编码器的快速帧内模式预测

    公开(公告)号:US20080232463A1

    公开(公告)日:2008-09-25

    申请号:US11666061

    申请日:2005-10-19

    IPC分类号: H04N7/26

    摘要: There are provided video encoders and corresponding methods for encoding video data for an image that is divisible into macroblocks. A video encoder includes an encoder for performing inta mode selection when encoding a current macroblock by testing a first subset of intra modes to compute a rate distortion cost, and utilizing the rate distortion cost to determine whether to terminate the intra mode selection and which additional intra modes, if any, are to be examined with respect to the current macroblock.

    摘要翻译: 提供了视频编码器和用于编码可分割为宏块的图像的视频数据的相应方法。 视频编码器包括编码器,用于在通过测试帧内模式的第一子集来计算速率失真成本来对当前宏块进行编码时执行模式选择,并且利用速率失真成本来确定是否终止帧内模式选择以及附加帧内模式 要对当前的宏块进行检查,如果有的话。

    METHOD AND APPARATUS FOR ADAPTIVE FEATURE OF INTEREST COLOR MODEL PARAMETERS ESTIMATION
    89.
    发明申请
    METHOD AND APPARATUS FOR ADAPTIVE FEATURE OF INTEREST COLOR MODEL PARAMETERS ESTIMATION 审中-公开
    利用颜色模型参数自适应特征估计的方法和装置

    公开(公告)号:US20100322300A1

    公开(公告)日:2010-12-23

    申请号:US12735906

    申请日:2008-03-18

    IPC分类号: H04N11/04 G06K9/00

    摘要: A method and apparatus for adaptive feature of interest color model parameters estimation are provided. The apparatus includes a feature of interest color model parameters estimator and a feature of interest detector. The feature of interest color model parameters estimator is for extracting at least one set of pixels from at least one image. The at least one set of pixels corresponds to a feature of interest. For each of the at least one set of pixels, the feature of interest color model parameters estimator models color components of pixels in the at least one set with statistical models, and estimates feature of interest color model parameters based on the modeled color components to obtain at least one estimated feature of interest color model. The feature of interest detector is for detecting feature of interest pixels from the at least one set of pixels using the at least one estimated feature of interest color model.

    摘要翻译: 提供了一种感兴趣的颜色模型参数估计的自适应特征的方法和装置。 该装置包括感兴趣的颜色模型参数估计器的特征和感兴趣检测器的特征。 感兴趣的颜色模型参数估计器的特征是用于从至少一个图像中提取至少一组像素。 至少一组像素对应于感兴趣的特征。 对于所述至少一组像素中的每一个,感兴趣的颜色模型参数估计器使用统计模型对至少一个集合中的像素的颜色分量进行模型,并且基于所建模的颜色分量来估计感兴趣的颜色模型参数的特征,以获得 至少一个估计特征的兴趣颜色模型。 感兴趣检测器的特征是使用感兴趣的颜色模型的至少一个估计特征来检测来自至少一组像素的兴趣像素的特征。