专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20070248163A1 Quantization adjustments for DC shift artifacts 有权
标题翻译： DC偏移伪影的量化调整
公开(公告)号：US20070248163A1
公开(公告)日：2007-10-25
申请号：US11400785
申请日：2006-04-07
申请人： Xiping Zuo , Chih-Lung Lin , Pohsiang Hsu
发明人： Xiping Zuo , Chih-Lung Lin , Pohsiang Hsu
IPC分类号： H04N11/04
CPC分类号： H04N19/59 , H04N19/117 , H04N19/124 , H04N19/14 , H04N19/154 , H04N19/176 , H04N19/18 , H04N19/192 , H04N19/61 , H04N19/86
摘要： A video encoder identifies one or more portions of a video picture that contain DC shift blocks and adjusts quantization (e.g., by selecting a smaller quantization step size) to reduce contouring artifacts when the picture is reconstructed. The encoder can identify the portion(s) of the picture that contain DC shift blocks by identifying one or more gradient slope regions in the picture and analyzing quantization effects on DC coefficients in the gradient slope region(s). The encoder can select a coarser quantization step size for a high-texture picture portion.
摘要翻译：视频编码器识别包含DC移位块的视频图像的一个或多个部分，并且调整量化（例如，通过选择较小的量化步长）以减少重构图像时的轮廓伪影。编码器可以通过识别图像中的一个或多个梯度斜率区域并分析对梯度斜率区域中的DC系数的量化效应来识别包含DC移位块的图像的部分。编码器可以为高纹理图像部分选择较粗的量化步长。

2. 发明授权

US08503536B2 Quantization adjustments for DC shift artifacts 有权
标题翻译： DC偏移伪影的量化调整
公开(公告)号：US08503536B2
公开(公告)日：2013-08-06
申请号：US11400785
申请日：2006-04-07
申请人： Xiping Zuo , Chih-Lung Lin , Pohsiang Hsu
发明人： Xiping Zuo , Chih-Lung Lin , Pohsiang Hsu
IPC分类号： H04N7/12
CPC分类号： H04N19/59 , H04N19/117 , H04N19/124 , H04N19/14 , H04N19/154 , H04N19/176 , H04N19/18 , H04N19/192 , H04N19/61 , H04N19/86
摘要： A video encoder identifies one or more portions of a video picture that contain DC shift blocks and adjusts quantization (e.g., by selecting a smaller quantization step size) to reduce contouring artifacts when the picture is reconstructed. The encoder can identify the portion(s) of the picture that contain DC shift blocks by identifying one or more gradient slope regions in the picture and analyzing quantization effects on DC coefficients in the gradient slope region(s). The encoder can select a coarser quantization step size for a high-texture picture portion.
摘要翻译：视频编码器识别包含DC移位块的视频图像的一个或多个部分，并且调整量化（例如，通过选择较小的量化步长）以减少重构图像时的轮廓伪影。编码器可以通过识别图像中的一个或多个梯度斜率区域并分析对梯度斜率区域中的DC系数的量化效应来识别包含DC移位块的图像的部分。编码器可以为高纹理图像部分选择较粗的量化步长。

3. 发明授权

US08130828B2 Adjusting quantization to preserve non-zero AC coefficients 有权
标题翻译：调整量化以保持非零AC系数
公开(公告)号：US08130828B2
公开(公告)日：2012-03-06
申请号：US11400741
申请日：2006-04-07
申请人： Pohsiang Hsu , Chih-Lung Lin , Xiping Zuo
发明人： Pohsiang Hsu , Chih-Lung Lin , Xiping Zuo
IPC分类号： H04B1/66 , H04N7/12 , H04N11/02
CPC分类号： H04N19/126 , H04N19/61
摘要： A video encoder identifies one or more AC coefficients of each of plural blocks in the picture. The encoder identifies a threshold quantization step size such that the identified AC coefficient(s) of each of the plural blocks are nonzero after quantization according to the threshold quantization step size. The threshold quantization step size is such that quantization according to the next higher quantization step size would result in at least one of the identified AC coefficient(s) of at least one of the plural blocks being zero. For example, identifying the threshold quantization step size comprises identifying n top AC coefficients in each of four blocks of a macroblock, determining the smallest AC coefficient among the identified n top AC coefficients of the four blocks, and iteratively evaluating the smallest AC coefficient with respect to candidate quantization step sizes until the threshold quantization step size is identified.
摘要翻译：视频编码器识别图像中的多个块中的每一个的一个或多个AC系数。编码器识别阈值量化步长，使得根据阈值量化步长，多个块中的每一个的所识别的AC系数在量化之后是非零的。阈值量化步长使得根据下一较高量化步长的量化将导致至少一个多个块中的至少一个的系数中的至少一个为零。例如，识别阈值量化步长包括识别宏块的四个块中的每一个中的n个顶部AC系数，确定四个块的所识别的n个顶部AC系数中的最小AC系数，并且相对于到候选量化步长，直到识别阈值量化步长。

4. 发明申请

US20070237221A1 Adjusting quantization to preserve non-zero AC coefficients 有权
标题翻译：调整量化以保持非零AC系数
公开(公告)号：US20070237221A1
公开(公告)日：2007-10-11
申请号：US11400741
申请日：2006-04-07
申请人： Pohsiang Hsu , Chih-Lung Lin , Xiping Zuo
发明人： Pohsiang Hsu , Chih-Lung Lin , Xiping Zuo
IPC分类号： H04N11/04
CPC分类号： H04N19/126 , H04N19/61
摘要： A video encoder identifies one or more AC coefficients of each of plural blocks in the picture. The encoder identifies a threshold quantization step size such that the identified AC coefficient(s) of each of the plural blocks are nonzero after quantization according to the threshold quantization step size. The threshold quantization step size is such that quantization according to the next higher quantization step size would result in at least one of the identified AC coefficient(s) of at least one of the plural blocks being zero. For example, identifying the threshold quantization step size comprises identifying n top AC coefficients in each of four blocks of a macroblock, determining the smallest AC coefficient among the identified n top AC coefficients of the four blocks, and iteratively evaluating the smallest AC coefficient with respect to candidate quantization step sizes until the threshold quantization step size is identified.
摘要翻译：视频编码器识别图像中的多个块中的每一个的一个或多个AC系数。编码器识别阈值量化步长，使得根据阈值量化步长，多个块中的每一个的所识别的AC系数在量化之后是非零的。阈值量化步长使得根据下一较高量化步长的量化将导致至少一个多个块中的至少一个的系数中的至少一个为零。例如，识别阈值量化步长包括识别宏块的四个块中的每一个中的n个顶部AC系数，确定四个块的所识别的n个顶部AC系数中的最小AC系数，并且相对于到候选量化步长，直到识别阈值量化步长。

5. 发明授权

US08442337B2 Encoding adjustments for animation content 有权
标题翻译：动画内容的编码调整
公开(公告)号：US08442337B2
公开(公告)日：2013-05-14
申请号：US11787945
申请日：2007-04-18
申请人： Xiping Zuo , Chih-Lung Lin
发明人： Xiping Zuo , Chih-Lung Lin
IPC分类号： G06K9/00 , H03D3/24
CPC分类号： H04N19/48 , H04N19/124 , H04N19/14 , H04N19/176 , H04N19/18 , H04N19/61
摘要： Techniques and tools are described for encoding animation video. In some embodiments, a video encoder designates animation video for encoding as animation content, which typically involves changing one or more encoder settings or rules to improve encoding performance for the animation content. When the encoder encodes the animation video, the encoder detects edges in the animation video using texture and changes settings for areas that include detected edges so as to improve encoding quality for the areas. In some embodiments, a video encoder adjusts differential quantization rules and quantizes animation video according to the adjusted differential quantization rules.
摘要翻译：描述了用于编码动画视频的技术和工具。在一些实施例中，视频编码器将用于编码的动画视频指定为动画内容，其通常涉及改变一个或多个编码器设置或规则以提高动画内容的编码性能。当编码器对动画视频进行编码时，编码器使用纹理和对包括检测到的边缘的区域的改变设置来检测动画视频中的边缘，以便提高区域的编码质量。在一些实施例中，视频编码器根据经调整的差分量化规则来调整差分量化规则并量化动画视频。

6. 发明申请

US20120269266A1 REGIONS OF INTEREST FOR QUALITY ADJUSTMENTS 有权
标题翻译：质量调整区域
公开(公告)号：US20120269266A1
公开(公告)日：2012-10-25
申请号：US13539730
申请日：2012-07-02
申请人： Chih-Lung Lin , Ming-Chieh Lee , Stacey Spears , Philip Lawrence Garrett , Anil Madhav Murching , Amy Jennifer Beauford , Thomas W. Holcomb , Xiping Zuo
发明人： Chih-Lung Lin , Ming-Chieh Lee , Stacey Spears , Philip Lawrence Garrett , Anil Madhav Murching , Amy Jennifer Beauford , Thomas W. Holcomb , Xiping Zuo
IPC分类号： H04N7/26
CPC分类号： H04N19/17 , H04N19/124 , H04N19/147 , H04N19/162 , H04N19/61
摘要： Quality settings established by an encoder are adjusted based on information associated with regions of interest (“ROIs”). For example, quantization step sizes can be reduced (to improve quality) or increased (to reduce bit rate). ROIs can be identified and quality settings can be adjusted based on input received from a user interface. An overlap setting can be determined for a portion of a picture that corresponds to an ROI overlap area. For example, an overlap setting is chosen from step sizes corresponding to a first overlapping ROI and a second overlapping ROI, or from relative reductions in step size corresponding to the first ROI and the second ROI. ROIs can be parameterized by information (e.g., using data structures) that indicates spatial dimensions of the ROIs and quality adjustment information (e.g., dead zone information, step size information, and quantization mode information).
摘要翻译：基于与兴趣区域（ROI）相关联的信息来调整由编码器建立的质量设置。例如，可以减小量化步长（提高质量）或增加（以减少比特率）。可以识别ROI，并且可以基于从用户界面接收的输入来调整质量设置。可以针对对应于ROI重叠区域的图像的一部分来确定重叠设置。例如，从与第一重叠ROI和第二重叠ROI相对应的步长尺寸或从与第一ROI和第二ROI对应的步长的相对减小中选择重叠设置。可以通过指示ROI的空间维度和质量调整信息（例如，死区信息，步长信息和量化模式信息）的信息（例如，使用数据结构）对ROI进行参数化。

7. 发明授权

US08576908B2 Regions of interest for quality adjustments 有权
标题翻译：感兴趣的地区进行质量调整
公开(公告)号：US08576908B2
公开(公告)日：2013-11-05
申请号：US13539730
申请日：2012-07-02
申请人： Chih-Lung Lin , Ming-Chieh Lee , Stacey Spears , Philip Lawrence Garrett , Anil Madhav Murching , Amy Jennifer Beauford , Thomas W. Holcomb , Xiping Zuo
发明人： Chih-Lung Lin , Ming-Chieh Lee , Stacey Spears , Philip Lawrence Garrett , Anil Madhav Murching , Amy Jennifer Beauford , Thomas W. Holcomb , Xiping Zuo
IPC分类号： H04N11/02
CPC分类号： H04N19/17 , H04N19/124 , H04N19/147 , H04N19/162 , H04N19/61
摘要： Quality settings established by an encoder are adjusted based on information associated with regions of interest (“ROIs”). For example, quantization step sizes can be reduced (to improve quality) or increased (to reduce bit rate). ROIs can be identified and quality settings can be adjusted based on input received from a user interface. An overlap setting can be determined for a portion of a picture that corresponds to an ROI overlap area. For example, an overlap setting is chosen from step sizes corresponding to a first overlapping ROI and a second overlapping ROI, or from relative reductions in step size corresponding to the first ROI and the second ROI. ROIs can be parameterized by information (e.g., using data structures) that indicates spatial dimensions of the ROIs and quality adjustment information (e.g., dead zone information, step size information, and quantization mode information).
摘要翻译：基于与感兴趣区域（“ROI”）相关联的信息来调整由编码器建立的质量设置。例如，可以减小量化步长（提高质量）或增加（以减少比特率）。可以识别ROI，并且可以基于从用户界面接收的输入来调整质量设置。可以针对对应于ROI重叠区域的图像的一部分来确定重叠设置。例如，从与第一重叠ROI和第二重叠ROI相对应的步长尺寸或从与第一ROI和第二ROI对应的步长的相对减小中选择重叠设置。可以通过指示ROI的空间维度和质量调整信息（例如，死区信息，步长信息和量化模式信息）的信息（例如，使用数据结构）对ROI进行参数化。

8. 发明申请

US20080240250A1 Regions of interest for quality adjustments 有权
标题翻译：感兴趣的地区进行质量调整
公开(公告)号：US20080240250A1
公开(公告)日：2008-10-02
申请号：US11731851
申请日：2007-03-30
申请人： Chih-Lung Lin , Ming-Chieh Lee , Stacey Spears , Philip Lawrence Garrett , Anil Madhav Murching , Amy Jennifer Beauford , Thomas W. Holcomb , Xiping Zuo
发明人： Chih-Lung Lin , Ming-Chieh Lee , Stacey Spears , Philip Lawrence Garrett , Anil Madhav Murching , Amy Jennifer Beauford , Thomas W. Holcomb , Xiping Zuo
IPC分类号： H04N11/04
CPC分类号： H04N19/17 , H04N19/124 , H04N19/147 , H04N19/162 , H04N19/61
摘要： Quality settings established by an encoder are adjusted based on information associated with regions of interest (“ROIs”). For example, quantization step sizes can be reduced (to improve quality) or increased (to reduce bit rate). ROIs can be identified and quality settings can be adjusted based on input received from a user interface. An overlap setting can be determined for a portion of a picture that corresponds to an ROI overlap area. For example, an overlap setting is chosen from step sizes corresponding to a first overlapping ROI and a second overlapping ROI, or from relative reductions in step size corresponding to the first ROI and the second ROI. ROIs can be parameterized by information (e.g., using data structures) that indicates spatial dimensions of the ROIs and quality adjustment information (e.g., dead zone information, step size information, and quantization mode information).
摘要翻译：基于与感兴趣区域（“ROI”）相关联的信息来调整由编码器建立的质量设置。例如，可以减小量化步长（提高质量）或增加（以减少比特率）。可以识别ROI，并且可以基于从用户界面接收的输入来调整质量设置。可以针对对应于ROI重叠区域的图像的一部分来确定重叠设置。例如，从与第一重叠ROI和第二重叠ROI相对应的步长尺寸或从与第一ROI和第二ROI对应的步长的相对减小中选择重叠设置。可以通过指示ROI的空间维度和质量调整信息（例如，死区信息，步长信息和量化模式信息）的信息（例如，使用数据结构）对ROI进行参数化。

9. 发明申请

US20110255595A1 QUANTIZATION ADJUSTMENT BASED ON TEXTURE LEVEL 有权
标题翻译：基于纹理水平的量化调整
公开(公告)号：US20110255595A1
公开(公告)日：2011-10-20
申请号：US13172607
申请日：2011-06-29
申请人： Xiping Zuo , Chih-Lung Lin
发明人： Xiping Zuo , Chih-Lung Lin
IPC分类号： H04N7/26
CPC分类号： H04N19/137 , H04N19/124 , H04N19/14 , H04N19/176 , H04N19/61
摘要： A video encoder identifies a current smooth region of a current picture in a sequence and performs temporal analysis by determining whether a corresponding region in at least one previous and/or future picture is smooth. Based at least in part on the temporal analysis, the encoder adjusts quantization in the current smooth region. An encoder determines a differential quantization interval for a sequence, the interval comprising an interval number. The interval constrains the encoder to skip differential quantization for at least the interval number of predicted pictures after a predicted differentially quantized picture. An encoder analyzes texture in a current picture and sets a smoothness threshold. The encoder compares texture data with the smoothness threshold and adjusts differential quantization for at least part of the current picture based on a finding of at least one smooth region in the current picture according to the smoothness threshold.
摘要翻译：视频编码器识别序列中当前图像的当前平滑区域，并通过确定至少一个先前和/或将来图像中的相应区域是否平滑来执行时间分析。至少部分地基于时间分析，编码器调整当前平滑区域中的量化。编码器确定序列的差分量化间隔，该间隔包括间隔数。间隔限制编码器在预测的差分量化图像之后至少对预测图像的间隔数进行差分量化。编码器分析当前图像中的纹理并设置平滑度阈值。编码器将纹理数据与平滑度阈值进行比较，并根据平滑度阈值，根据当前图像中至少一个平滑区域的发现，调整至少部分当前画面的差分量化。

10. 发明授权

US07995649B2 Quantization adjustment based on texture level 有权
标题翻译：基于纹理水平的量化调整
公开(公告)号：US07995649B2
公开(公告)日：2011-08-09
申请号：US11400788
申请日：2006-04-07
申请人： Xiping Zuo , Chih-Lung Lin
发明人： Xiping Zuo , Chih-Lung Lin
IPC分类号： H04N7/12
CPC分类号： H04N19/137 , H04N19/124 , H04N19/14 , H04N19/176 , H04N19/61
摘要： A video encoder identifies a current smooth region of a current picture in a sequence and performs temporal analysis by determining whether a corresponding region in at least one previous and/or future picture is smooth. Based at least in part on the temporal analysis, the encoder adjusts quantization in the current smooth region. An encoder determines a differential quantization interval for a sequence, the interval comprising an interval number. The interval constrains the encoder to skip differential quantization for at least the interval number of predicted pictures after a predicted differentially quantized picture. An encoder analyzes texture in a current picture and sets a smoothness threshold. The encoder compares texture data with the smoothness threshold and adjusts differential quantization for at least part of the current picture based on a finding of at least one smooth region in the current picture according to the smoothness threshold.
摘要翻译：视频编码器识别序列中当前图像的当前平滑区域，并通过确定至少一个先前和/或将来图像中的相应区域是否平滑来执行时间分析。至少部分地基于时间分析，编码器调整当前平滑区域中的量化。编码器确定序列的差分量化间隔，该间隔包括间隔数。间隔限制编码器在预测的差分量化图像之后至少对预测图像的间隔数进行差分量化。编码器分析当前图像中的纹理并设置平滑度阈值。编码器将纹理数据与平滑度阈值进行比较，并根据平滑度阈值，根据当前图像中至少一个平滑区域的发现，调整至少部分当前画面的差分量化。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式