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1. 发明授权

US08781253B2 Method and apparatus for video object segmentation 有权
标题翻译：视频对象分割的方法和装置
公开(公告)号：US08781253B2
公开(公告)日：2014-07-15
申请号：US13522589
申请日：2011-01-20
申请人： Malavika Bhaskaranand , Sitaram Bhagavathy
发明人： Malavika Bhaskaranand , Sitaram Bhagavathy
IPC分类号： G06K9/20 , G06T7/20
CPC分类号： G06T7/2053 , G06T7/194 , G06T7/254 , G06T2207/10016
摘要： Methods and apparatus for video object segmentation are provided, suitable for use in a super-resolution system. The method comprises alignment of frames of a video sequence, pixel alignment to generate initial foreground masks using a similarity metric, consensus filtering to generate an intermediate foreground mask, and refinement of the mask using spatio-temporal information from the video sequence. In various embodiments, the similarity metric is computed using a sum of squared differences approach, a correlation, or a modified normalized correlation metric. Soft thresholding of the similarity metric is also used in one embodiment of the present principles. Weighting factors are also applied to certain critical frames in the consensus filtering stage in one embodiment using the present principles.
摘要翻译：提供视频对象分割的方法和装置，适用于超分辨率系统。该方法包括对视频序列的帧进行对齐，使用相似性度量生成初始前景掩码的像素对齐，生成中间前景掩码的一致性滤波，以及使用来自视频序列的时空信息来细化掩码。在各种实施例中，使用平方差法，相关性或修正的归一化相关度量的和来计算相似性度量。在本原理的一个实施例中也使用相似性度量的软阈值。在一个实施例中，使用本原理，在一致过滤阶段中的某些关键帧也应用加权因子。

2. 发明申请

US20120294530A1 METHOD AND APPARATUS FOR VIDEO OBJECT SEGMENTATION 有权
标题翻译：视频对象分割的方法和装置
公开(公告)号：US20120294530A1
公开(公告)日：2012-11-22
申请号：US13522589
申请日：2011-01-20
申请人： Malavika Bhaskaranand , Sitaram Bhagavathy
发明人： Malavika Bhaskaranand , Sitaram Bhagavathy
IPC分类号： G06K9/34
CPC分类号： G06T7/2053 , G06T7/194 , G06T7/254 , G06T2207/10016
摘要： Methods and apparatus for video object segmentation are provided, suitable for use in a super-resolution system. The method comprises alignment of frames of a video sequence, pixel alignment to generate initial foreground masks using a similarity metric, consensus filtering to generate an intermediate foreground mask, and refinement of the mask using spatio-temporal information from the video sequence. In various embodiments, the similarity metric is computed using a sum of squared differences approach, a correlation, or a modified normalized correlation metric. Soft thresholding of the similarity metric is also used in one embodiment of the present principles. Weighting factors are also applied to certain critical frames in the consensus filtering stage in one embodiment using the present principles.
摘要翻译：提供视频对象分割的方法和装置，适用于超分辨率系统。该方法包括对视频序列的帧进行对齐，使用相似性度量生成初始前景掩码的像素对齐，生成中间前景掩码的一致性滤波，以及使用来自视频序列的时空信息来细化掩码。在各种实施例中，使用平方差法，相关性或修正的归一化相关度量的和来计算相似性度量。在本原理的一个实施例中也使用相似性度量的软阈值。在一个实施例中，使用本原理，在一致过滤阶段中的某些关键帧也应用加权因子。

3. 发明授权

US08428118B2 Technique for transcoding MPEG-2/MPEG-4 bitstream to H.264 bitstream 有权
标题翻译：将MPEG-2 / MPEG-4比特流转码为H.264比特流的技术
公开(公告)号：US08428118B2
公开(公告)日：2013-04-23
申请号：US11465129
申请日：2006-08-17
申请人： Sriram Sethuraman , Arvind Raman , Ashwini Kumar , Malavika Bhaskaranand , Omkiran Sharma
发明人： Sriram Sethuraman , Arvind Raman , Ashwini Kumar , Malavika Bhaskaranand , Omkiran Sharma
IPC分类号： H04N7/12 , H04N11/02
CPC分类号： G10L19/173 , H04N19/40 , H04N19/61
摘要： A method/system of transcoding an MPEG 2/4 bit stream into an H.264 format, handles an input MPEG 2/4 bit stream in a decoder, and identifies certain data in the input bit stream for reuse in the H.264 format; and, reuses the identified data in a re-encoder with assistance from a mapping module in transcoding by converting the input bit stream into an output H.264 format. The identified data includes information at a macrolevel and information at a picture level. The information at the macrolevel might comprise additional stages incorporated in the re-encoder module including a Mapping Process stage, a Sub Pixel Refinement stage, a Mode Selection stage to choose from Intra, Inter or Skip modes, followed by the standard H.264 encoding loop and the Entropy Coding Block. The information at the picture level might include; a) average quantizer of frame, and, b) total bits per frame.
摘要翻译：将MPEG 2/4比特流转码为H.264格式的方法/系统处理解码器中的输入MPEG 2/4比特流，并且识别输入比特流中的某些数据以在H.264格式中重用 ; 并且通过将输入的比特流转换成输出的H.264格式，通过代码转换中的映射模块的帮助，将识别的数据重新编码在重新编码器中。所识别的数据包括宏观级的信息和图像级的信息。宏级别的信息可能包括并入重编码器模块中的附加阶段，包括映射处理阶段，子像素精化阶段，从Intra，Inter或Skip模式中选择的模式选择阶段，随后是标准H.264编码循环和熵编码块。图片级别的信息可能包括： a）帧的平均量化器，以及b）每帧的总比特数。

4. 发明申请

US20080043831A1 A TECHNIQUE FOR TRANSCODING MPEG-2 / MPEG-4 BITSTREAM TO H.264 BITSTREAM 有权
标题翻译：将MPEG-2 / MPEG-4 BITSTREAM转换到H.264 BITSTREAM的技术
公开(公告)号：US20080043831A1
公开(公告)日：2008-02-21
申请号：US11465129
申请日：2006-08-17
申请人： Sriram Sethuraman , Arvind Raman , Ashwini Kumar , Malavika Bhaskaranand , Omkiran Sharma
发明人： Sriram Sethuraman , Arvind Raman , Ashwini Kumar , Malavika Bhaskaranand , Omkiran Sharma
IPC分类号： H04B1/66
CPC分类号： G10L19/173 , H04N19/40 , H04N19/61
摘要： A method/system of transcoding an MPEG 2/4 bit stream into an H.264 format, handles an input MPEG 2/4 bit stream in a decoder, and identifies certain data in the input bit stream for reuse in the H.264 format; and, reuses the identified data in a re-encoder with assistance from a mapping module in transcoding by converting the input bit stream into an output H.264 format. The identified data includes information at a macrolevel and information at a picture level. The information at the macrolevel might comprise additional stages incorporated in the re-encoder module including a Mapping Process stage, a Sub Pixel Refinement stage, a Mode Selection stage to choose from Intra, Inter or Skip modes, followed by the standard H.264 encoding loop and the Entropy Coding Block. The information at the picture level might include; a) average quantizer of frame, and, b) total bits per frame.
摘要翻译：将MPEG 2/4比特流转码为H.264格式的方法/系统处理解码器中的输入MPEG 2/4比特流，并且识别输入比特流中的某些数据以在H.264格式中重用 ; 并且通过将输入的比特流转换成输出的H.264格式，通过代码转换中的映射模块的帮助，将识别的数据重新编码在重新编码器中。所识别的数据包括宏观级的信息和图像级的信息。宏级别的信息可能包括并入重编码器模块中的附加阶段，包括映射处理阶段，子像素精化阶段，从Intra，Inter或Skip模式中选择的模式选择阶段，随后是标准H.264编码循环和熵编码块。图片级别的信息可能包括： a）帧的平均量化器，以及b）每帧的总比特数。

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