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1. 发明授权

US08189933B2 Classifying and controlling encoding quality for textured, dark smooth and smooth video content 有权
标题翻译：分类和控制纹理，黑暗平滑和平滑视频内容的编码质量
公开(公告)号：US08189933B2
公开(公告)日：2012-05-29
申请号：US12080406
申请日：2008-03-31
申请人： Thomas W. Holcomb , Stacey Spears , Cheng Chang , Chih-Lung Lin
发明人： Thomas W. Holcomb , Stacey Spears , Cheng Chang , Chih-Lung Lin
IPC分类号： G06K9/36
CPC分类号： H04N19/14 , H04N19/126 , H04N19/136 , H04N19/176
摘要： Techniques and tools for content classification and adaptive quantization are described. In an example implementation, a video encoding tool classifies blocks as textured, dark smooth or other smooth. The tool classifies a block as textured or non-textured by comparing the energy of AC coefficients for the block to a texture threshold, which can be set using a non-linear mapping of possible texture classification levels to possible texture thresholds. If a block is not textured, the tool further classifies the block as dark smooth or smooth depending on average intensity value for the block. Using the classification information and one or more control parameters to control bit allocation for dark smooth content relative to other smooth content, the tool encodes the video and outputs encoded video information. Example multi-pass approaches to setting the control parameters are also described.
摘要翻译：描述了用于内容分类和自适应量化的技术和工具。在示例实现中，视频编码工具将块分类为纹理，暗光滑或其他平滑。该工具通过将块的AC系数的能量与纹理阈值进行比较来将块分类为纹理或非纹理，其可以使用可能的纹理分类级别与可能的纹理阈值的非线性映射来设置。如果块没有纹理，则工具根据块的平均强度值进一步将块分类为黑光滑或平滑。使用分类信息和一个或多个控制参数来控制相对于其他平滑内容的暗平滑内容的位分配，工具对视频进行编码并输出编码视频信息。还描述了设置控制参数的示例多路径方法。

2. 发明申请

US20090245587A1 Classifying and controlling encoding quality for textured, dark smooth and smooth video content 有权
标题翻译：分类和控制纹理，黑暗平滑和平滑视频内容的编码质量
公开(公告)号：US20090245587A1
公开(公告)日：2009-10-01
申请号：US12080406
申请日：2008-03-31
申请人： Thomas W. Holcomb , Stacey Spears , Cheng Chang , Chih-Lung Lin
发明人： Thomas W. Holcomb , Stacey Spears , Cheng Chang , Chih-Lung Lin
IPC分类号： G06K9/00 , G06K9/36
CPC分类号： H04N19/14 , H04N19/126 , H04N19/136 , H04N19/176
摘要： Techniques and tools for content classification and adaptive quantization are described. In an example implementation, a video encoding tool classifies blocks as textured, dark smooth or other smooth. The tool classifies a block as textured or non-textured by comparing the energy of AC coefficients for the block to a texture threshold, which can be set using a non-linear mapping of possible texture classification levels to possible texture thresholds. If a block is not textured, the tool further classifies the block as dark smooth or smooth depending on average intensity value for the block. Using the classification information and one or more control parameters to control bit allocation for dark smooth content relative to other smooth content, the tool encodes the video and outputs encoded video information. Example multi-pass approaches to setting the control parameters are also described.
摘要翻译：描述了用于内容分类和自适应量化的技术和工具。在示例实现中，视频编码工具将块分类为纹理，暗光滑或其他平滑。该工具通过将块的AC系数的能量与纹理阈值进行比较来将块分类为纹理或非纹理，其可以使用可能的纹理分类级别与可能的纹理阈值的非线性映射来设置。如果块没有纹理，则工具根据块的平均强度值进一步将块分类为黑光滑或平滑。使用分类信息和一个或多个控制参数来控制相对于其他平滑内容的暗平滑内容的位分配，工具对视频进行编码并输出编码视频信息。还描述了设置控制参数的示例多路径方法。

3. 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。

4. 发明申请

US20100189183A1 MULTIPLE BIT RATE VIDEO ENCODING USING VARIABLE BIT RATE AND DYNAMIC RESOLUTION FOR ADAPTIVE VIDEO STREAMING 有权
标题翻译：使用可变位速率和动态分辨率进行自适应视频流的多位速率视频编码
公开(公告)号：US20100189183A1
公开(公告)日：2010-07-29
申请号：US12362420
申请日：2009-01-29
申请人： Chuang Gu , Chun-Wei Chan , William Chen , Stacey Spears , Thomas W. Holcomb , Chih-Lung Lin , Sanjeev Mehrotra
发明人： Chuang Gu , Chun-Wei Chan , William Chen , Stacey Spears , Thomas W. Holcomb , Chih-Lung Lin , Sanjeev Mehrotra
IPC分类号： H04N7/26
CPC分类号： H04N21/4621 , H04N19/124 , H04N19/14 , H04N19/149 , H04N19/177 , H04N19/61 , H04N19/85 , H04N21/23439 , H04N21/6373 , H04N21/8456
摘要： A video encoding system encodes video streams for multiple bit rate video streaming using an approach that permits the encoded bit rate to vary subject to a peak bit rate and average bit rate constraints for higher quality streams, while a bottom bit rate stream is encoded to achieve a constant chunk rate. The video encoding system also dynamically decides an encoding resolution for segments of the multiple bit rate video streams that varies with video complexity so as to achieve a better visual experience for multiple bit rate streaming.
摘要翻译：视频编码系统使用允许编码比特率根据高质量流的峰比特率和平均比特率约束而变化的方法对多个比特率视频流的视频流进行编码，而底部比特率流被编码以实现恒定的块率。视频编码系统还动态地决定了随着视频复杂度而变化的多个比特率视频流的段的编码分辨率，从而为多个比特率流实现更好的视觉体验。

5. 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。

6. 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。

7. 发明授权

US08243797B2 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：US08243797B2
公开(公告)日：2012-08-14
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： H04N11/02
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. 发明授权

US08396114B2 Multiple bit rate video encoding using variable bit rate and dynamic resolution for adaptive video streaming 有权
标题翻译：使用可变比特率和自适应视频流的动态分辨率的多比特率视频编码
公开(公告)号：US08396114B2
公开(公告)日：2013-03-12
申请号：US12362420
申请日：2009-01-29
申请人： Chuang Gu , Chun-Wei Chan , William Chen , Stacey Spears , Thomas W. Holcomb , Chih-Lung Lin , Sanjeev Mehrotra
发明人： Chuang Gu , Chun-Wei Chan , William Chen , Stacey Spears , Thomas W. Holcomb , Chih-Lung Lin , Sanjeev Mehrotra
IPC分类号： H04N7/12 , G06K9/36 , G06F11/00
CPC分类号： H04N21/4621 , H04N19/124 , H04N19/14 , H04N19/149 , H04N19/177 , H04N19/61 , H04N19/85 , H04N21/23439 , H04N21/6373 , H04N21/8456
摘要： A video encoding system encodes video streams for multiple bit rate video streaming using an approach that permits the encoded bit rate to vary subject to a peak bit rate and average bit rate constraints for higher quality streams, while a bottom bit rate stream is encoded to achieve a constant chunk rate. The video encoding system also dynamically decides an encoding resolution for segments of the multiple bit rate video streams that varies with video complexity so as to achieve a better visual experience for multiple bit rate streaming.
摘要翻译：视频编码系统使用允许编码比特率根据高质量流的峰比特率和平均比特率约束而变化的方法对多个比特率视频流的视频流进行编码，而底部比特率流被编码以实现恒定的块率。视频编码系统还动态地决定了随着视频复杂度而变化的多个比特率视频流的段的编码分辨率，从而为多个比特率流实现更好的视觉体验。

9. 发明申请

US20080192822A1 COMPLEXITY-BASED ADAPTIVE PREPROCESSING FOR MULTIPLE-PASS VIDEO COMPRESSION 有权
标题翻译：用于多通道视频压缩的基于复杂度的自适应预处理
公开(公告)号：US20080192822A1
公开(公告)日：2008-08-14
申请号：US11673516
申请日：2007-02-09
申请人： Cheng Chang , Chih-Lung Lin , Thomas W. Holcomb
发明人： Cheng Chang , Chih-Lung Lin , Thomas W. Holcomb
IPC分类号： H04N7/12
CPC分类号： H04N19/86 , H04N19/117 , H04N19/124 , H04N19/137 , H04N19/14 , H04N19/15 , H04N19/172 , H04N19/177 , H04N19/194 , H04N19/61
摘要： Multiple-pass video encoding systems and techniques are described which utilize statistics taken during a first-pass encoding to create complexity measurements for video data which is to be encoded. By analyzing these complexity measurements, preprocessing decisions, such as, for example, the determination of strength of denoise filters, can be made with greater accuracy. In one implementation, these complexity measurements take the form of calculation of temporal and spatial complexity parameters, which are then used to compute a unified complexity parameter for each group of pictures being encoded.
摘要翻译：描述了多通道视频编码系统和技术，其利用在一次通过编码期间进行的统计以创建要被编码的视频数据的复杂度测量。通过分析这些复杂性测量，可以更准确地进行预处理决策，例如去噪滤波器的强度的确定。在一个实现中，这些复杂度测量采用时间和空间复杂度参数的计算形式，然后将其用于为正被编码的每组图像计算统一的复杂度参数。

10. 发明授权

US08494052B2 Dynamic selection of motion estimation search ranges and extended motion vector ranges 有权
标题翻译：运动估计搜索范围和扩展运动矢量范围的动态选择
公开(公告)号：US08494052B2
公开(公告)日：2013-07-23
申请号：US11400051
申请日：2006-04-07
申请人： Cheng Chang , Chih-Lung Lin , Thomas W. Holcomb
发明人： Cheng Chang , Chih-Lung Lin , Thomas W. Holcomb
IPC分类号： H04N11/02
CPC分类号： H04N19/192 , H04N19/51
摘要： Techniques and tools for selecting search ranges and/or motion vector ranges during motion estimation are described. For example, a video encoder performs motion estimation constrained by a first search range, which results in multiple motion vectors. The encoder computes motion vector distribution information for the motion vectors. To compute the distribution information, the encoder can track the motion vectors in a histogram and count how many of the motion vectors fall within each of multiple intervals for the distribution information. The encoder then selects a second search range and performs motion estimation constrained by the second search range. Selecting the second search range can include selecting a motion vector range, which in some cases in effect determines the second search range.
摘要翻译：描述了在运动估计期间选择搜索范围和/或运动矢量范围的技术和工具。例如，视频编码器执行由第一搜索范围约束的运动估计，其导致多个运动矢量。编码器计算运动矢量的运动矢量分布信息。为了计算分布信息，编码器可以跟踪直方图中的运动矢量，并计算多少个运动矢量落在分布信息的多个间隔的每一个中。然后，编码器选择第二搜索范围并执行受第二搜索范围约束的运动估计。选择第二搜索范围可以包括选择运动矢量范围，其在某些情况下有效地确定第二搜索范围。

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