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公开(公告)号:US20100177822A1
公开(公告)日:2010-07-15
申请号:US12687487
申请日:2010-01-14
申请人: MARTA KARCZEWICZ , Giovanni Motta , Peisong Chen , Yan Ye
发明人: MARTA KARCZEWICZ , Giovanni Motta , Peisong Chen , Yan Ye
IPC分类号: H04N7/32
CPC分类号: H04N19/86 , H04N19/117 , H04N19/14 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/61 , H04N19/80 , H04N19/82
摘要: This disclosure describes techniques associated with filtering of video data in a video encoding and/or decoding process. In accordance with this disclosure, filtering is applied at an encoder, and filter information is encoded in the bitstream to identify the filtering that was applied at the encoder. Different types of filtering may be applied based on an activity metric determined for the video data. Moreover, in accordance with this disclosure, the manner in which the filter information is encoded into the bitstream may be dependent on the activity metric. In particular, for a first range of the activity metric, one or more filters are encoded directly, and for a second range of the activity metric, one or more filters are predictively encoded.
摘要翻译: 本公开描述与视频编码和/或解码过程中的视频数据的过滤相关联的技术。 根据本公开,在编码器处应用滤波,并且将滤波器信息编码在比特流中以识别在编码器处应用的滤波。 可以基于为视频数据确定的活动度量来应用不同类型的过滤。 此外,根据本公开,过滤器信息被编码到比特流中的方式可以取决于活动度量。 特别地,对于活动度量的第一范围,一个或多个过滤器被直接编码,并且对于活动度量的第二范围,一个或多个过滤器被预测编码。
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公开(公告)号:US20090175331A1
公开(公告)日:2009-07-09
申请号:US12339884
申请日:2008-12-19
申请人: MARTA KARCZEWICZ , Peisong Chen , Yan Ye
发明人: MARTA KARCZEWICZ , Peisong Chen , Yan Ye
IPC分类号: H04N7/26
CPC分类号: H04N19/132 , H04N19/124 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/91
摘要: This disclosure describes techniques for quantizing coefficients of a video block for a video coding process that supports context-based adaptive binary arithmetic coding (CABAC). A method may comprise estimating a last non-zero coefficient of the video block, and generating a set of quantized coefficients for the video block based on an assumption that the estimated last non-zero coefficient is actually the last non-zero coefficient of the video block.
摘要翻译: 本公开描述了用于量化用于支持基于上下文的自适应二进制算术编码(CABAC)的视频编码处理的视频块的系数的技术。 一种方法可以包括估计视频块的最后非零系数,并且基于估计的最后非零系数实际上是视频的最后非零系数的假设来生成视频块的一组量化系数 块。
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公开(公告)号:US20120075436A1
公开(公告)日:2012-03-29
申请号:US13194656
申请日:2011-07-29
申请人: YING CHEN , HONGQIANG WANG , MARTA KARCZEWICZ
发明人: YING CHEN , HONGQIANG WANG , MARTA KARCZEWICZ
CPC分类号: H04N19/597 , H04N13/161
摘要: In one example, a method of decoding video data comprising base layer data having a first resolution and enhancement layer data having the first resolution includes decoding the base layer data, wherein the base layer data comprises a reduced resolution version of a left view relative to the first resolution and a reduced resolution version of a right view relative to the first resolution. The method also includes decoding enhancement layer data comprising enhancement data for exactly one of the left view and the right view, wherein the enhancement data has the first resolution, and wherein decoding the enhancement layer data comprises decoding the enhancement layer data relative to at least a portion of the base layer data.
摘要翻译: 在一个示例中,解码包括具有第一分辨率的基本层数据和具有第一分辨率的增强层数据的视频数据的方法包括对基本层数据进行解码,其中基本层数据包括相对于第一分辨率的左视图的缩小分辨率版本 第一个决议和相对于第一个决议的正确观点的减少分辨率版本。 该方法还包括解码增强层数据,其中包括用于左视图和右视图中的一个的增强数据,其中增强数据具有第一分辨率,并且其中解码增强层数据包括相对于至少一个 基层数据的一部分。
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公开(公告)号:US20100296579A1
公开(公告)日:2010-11-25
申请号:US12782993
申请日:2010-05-19
申请人: RAHUL P. PANCHAL , MARTA KARCZEWICZ
发明人: RAHUL P. PANCHAL , MARTA KARCZEWICZ
IPC分类号: H04N7/32
CPC分类号: H04N19/577 , H04N19/109 , H04N19/114 , H04N19/137 , H04N19/142 , H04N19/172 , H04N19/177 , H04N19/61
摘要: A video encoding apparatus determines whether to encode a key frame of a group of pictures using a bi-directional prediction mode. In one example, a video encoding apparatus includes a mode select unit configured to generate a virtual key frame for a current group of pictures based on a previous key frame of a previous group of pictures and a next key frame of a next group of pictures, calculate an error value representing error between a current key frame of the current group of pictures and the virtual key frame, and determine whether the error value exceeds a threshold value, and a video encoder configured to encode the current key frame using a bi-directional prediction encoding mode when the error value does not exceed the threshold value. The video encoder may comprise the mode select unit, or a preprocessing unit of the apparatus may comprise the mode select unit.
摘要翻译: 视频编码装置使用双向预测模式来确定是否对一组图像的关键帧进行编码。 在一个示例中,视频编码装置包括:模式选择单元,被配置为基于先前的图像组的先前关键帧和下一组图像的下一个关键帧生成当前图像组的虚拟关键帧, 计算表示当前图像组的当前关键帧与虚拟关键帧之间的误差的误差值,并确定误差值是否超过阈值,以及视频编码器,被配置为使用双向 当错误值不超过阈值时的预测编码模式。 视频编码器可以包括模式选择单元,或者该设备的预处理单元可以包括模式选择单元。
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公开(公告)号:US20110304618A1
公开(公告)日:2011-12-15
申请号:US12814651
申请日:2010-06-14
申请人: YING CHEN , MARTA KARCZEWICZ
发明人: YING CHEN , MARTA KARCZEWICZ
IPC分类号: G06T15/00
CPC分类号: H04N13/128 , G06T7/593 , G06T7/97 , G06T2207/10021 , H04N2213/003
摘要: An apparatus may calculate disparity values for pixels of a two-dimensional image based on depth information for the pixels and generate a second image using the disparity values. The calculation of the disparity value for a pixel may correspond to a linear relationship between the depth of the pixel and a corresponding disparity range. In one example, an apparatus for rendering three-dimensional image data includes a view synthesizing unit configured to calculate disparity values for a plurality of pixels of a first image based on depth information associated with the plurality of pixels and disparity ranges to which the depth information is mapped, wherein the disparity values describe horizontal offsets for corresponding ones of a plurality of pixels for a second image. The apparatus may receive the first image and depth information from a source device. The apparatus may produce the second image using the first image and disparity values.
摘要翻译: 设备可以基于像素的深度信息来计算二维图像的像素的视差值,并使用视差值生成第二图像。 像素的视差值的计算可以对应于像素的深度和对应的视差范围之间的线性关系。 在一个示例中,用于渲染三维图像数据的装置包括视图合成单元,其被配置为基于与多个像素相关联的深度信息和视差范围来计算第一图像的多个像素的视差值,深度信息 被映射,其中视差值描述对于第二图像的多个像素中的相应的像素的水平偏移。 设备可以从源设备接收第一图像和深度信息。 该装置可以使用第一图像和视差值产生第二图像。
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公开(公告)号:US20110002388A1
公开(公告)日:2011-01-06
申请号:US12756661
申请日:2010-04-08
申请人: MARTA KARCZEWICZ , Wei-Jung Chien
发明人: MARTA KARCZEWICZ , Wei-Jung Chien
IPC分类号: H04N7/32
CPC分类号: H04N19/00733 , H04N19/105 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/46 , H04N19/51 , H04N19/573 , H04N19/577
摘要: In one aspect of this disclosure, template matching motion prediction is applied to B-frames. In another aspect of this disclosure, template matching motion prediction as applied to video block coding may include generating a template offset, generating a weighted sum of absolute differences, selecting a number of hypotheses used to encode video blocks based on the cost associated with the number of hypotheses and signaling, with a new syntax, to a decoder, the number of hypotheses used in encoding, rejecting hypotheses if the difference in value between a hypothesis and a reference hypothesis is greater than a threshold value, and/or generating the content of a sub-block that does not have reconstructed data available by combining motion-compensated prediction and luma residuals.
摘要翻译: 在本公开的一个方面,模板匹配运动预测被应用于B帧。 在本公开的另一方面,应用于视频块编码的模板匹配运动预测可以包括生成模板偏移,产生绝对差的加权和,基于与数字相关联的成本来选择用于编码视频块的假设的数量 对于解码器,使用新语法的假设和信令,编码中使用的假设的数量,如果假设和参考假设之间的值的差异大于阈值,则拒绝假设,和/或生成内容 通过组合运动补偿预测和亮度残差,没有重建数据可用的子块。
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