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1. 发明授权

US09667980B2 Content-adaptive background skipping for region-of-interest video coding 有权
公开(公告)号：US09667980B2
公开(公告)日：2017-05-30
申请号：US11200407
申请日：2005-08-09
申请人： Haohong Wang , Khaled Helmi El-Maleh , Yi Liang
发明人： Haohong Wang , Khaled Helmi El-Maleh , Yi Liang
IPC分类号： H04N7/18 , H04N19/196 , H04N19/147 , H04N19/172 , H04N19/115 , H04N19/126 , H04N19/132 , H04N19/14 , H04N19/137 , H04N19/154 , H04N19/162 , H04N19/177 , H04N19/17 , H04N19/587
CPC分类号： H04N19/198 , H04N19/115 , H04N19/126 , H04N19/132 , H04N19/137 , H04N19/14 , H04N19/147 , H04N19/154 , H04N19/162 , H04N19/17 , H04N19/172 , H04N19/177 , H04N19/196 , H04N19/587
摘要： The disclosure is directed to techniques for content-adaptive background skipping for region-of-interest (ROI) video coding. The techniques may be useful in video telephony (VT) applications such as video streaming and videoconferencing, and especially useful in low bit-rate wireless communication applications, such as mobile VT. The disclosed techniques analyze content information of a video frame to dynamically determine whether to skip a non-ROI area within the frame. For example, the skipping determination may be based on content activity, such as ROI shape deformation, ROI motion, non-ROI motion, non-ROI texture complexity, and accumulated distortion due to non-ROI skipping. The skip determination may operate in conjunction with either frame-level or macroblock-level bit allocation.

2. 发明授权

US08315466B2 Decoder-side region of interest video processing 有权
标题翻译：解码器侧感兴趣区域视频处理
公开(公告)号：US08315466B2
公开(公告)日：2012-11-20
申请号：US11615470
申请日：2006-12-22
申请人： Khaled Helmi El-Maleh , Vijay Mahadevan , Haohong Wang
发明人： Khaled Helmi El-Maleh , Vijay Mahadevan , Haohong Wang
IPC分类号： G06K9/36
CPC分类号： H04N21/4621 , H04N19/117 , H04N19/126 , H04N19/159 , H04N19/17 , H04N19/176 , H04N19/186 , H04N19/44 , H04N19/46 , H04N19/48 , H04N19/70 , H04N19/895 , H04N21/4728
摘要： The disclosure is directed to decoder-side region-of-interest (ROI) video processing. A video decoder determines whether ROI assistance information is available. If not, the decoder defaults to decoder-side ROI processing. The decoder-side ROI processing may estimate the reliability of ROI extraction in the bitstream domain. If ROI reliability is favorable, the decoder applies bitstream domain ROI extraction. If ROI reliability is unfavorable, the decoder applies pixel domain ROI extraction. The decoder may apply different ROI extraction processes for intra-coded (I) and inter-coded (P or B) data. The decoder may use color-based ROI generation for intra-coded data, and coded block pattern (CBP)-based ROI generation for inter-coded data. ROI refinement may involve shape-based refinement for intra-coded data, and motion- and color-based refinement for inter-coded data.
摘要翻译：本公开涉及解码器侧感兴趣区域（ROI）视频处理。视频解码器确定ROI辅助信息是否可用。如果不是，则解码器默认为解码器侧ROI处理。解码器侧ROI处理可以估计比特流域中的ROI提取的可靠性。如果ROI可靠性较好，则解码器应用比特流域ROI提取。如果ROI可靠性不利，则解码器应用像素域ROI提取。解码器可以对帧内编码（I）和帧间编码（P或B）数据应用不同的ROI提取处理。解码器可以使用用于帧内编码数据的基于颜色的ROI生成，以及用于帧间编码数据的基于编码块模式（CBP）的ROI生成。 ROI细化可能涉及帧内编码数据的基于形状的细化，以及帧间编码数据的基于运动和颜色的细化。

3. 发明申请

US20080198920A1 3D VIDEO ENCODING 有权
标题翻译： 3D视频编码
公开(公告)号：US20080198920A1
公开(公告)日：2008-08-21
申请号：US11677335
申请日：2007-02-21
申请人： Kai Chieh Yang , Haohong Wang , Khaled Helmi El-Maleh , Sharath Manjunath
发明人： Kai Chieh Yang , Haohong Wang , Khaled Helmi El-Maleh , Sharath Manjunath
IPC分类号： G06T15/00
CPC分类号： H04N19/194 , H04N13/122 , H04N19/124 , H04N19/147 , H04N19/149 , H04N19/172 , H04N19/176 , H04N19/597 , H04N19/61
摘要： A stereo 3D video frame includes left and right components that are combined to produce a stereo image. For a given amount of distortion, the left and right components may have different impacts on perceptual visual quality of the stereo image due to asymmetry in the distortion response of the human eye. A 3D video encoder adjusts an allocation of coding bits between left and right components of the 3D video based on a frame-level bit budget and a weighting between the left and right components. The video encoder may generate the bit allocation in the rho (ρ) domain. The weighted bit allocation may be derived based on a quality metric that indicates overall quality produced by the left and right components. The weighted bit allocation compensates for the asymmetric distortion response to reduce overall perceptual distortion in the stereo image and thereby enhance or maintain visual quality.
摘要翻译：立体3D视频帧包括组合以产生立体图像的左和右组件。对于给定量的失真，由于人眼的失真响应的不对称，左和右分量可能对立体图像的感知视觉质量具有不同的影响。 3D视频编码器基于帧级比特预算和左右分量之间的加权来调整3D视频的左和右分量之间的编码比特的分配。视频编码器可以在rho（rho）域中生成比特分配。可以基于指示左组件和右组件产生的总体质量的质量度量来导出加权比特分配。加权比特分配补偿非对称失真响应，以减少立体图像中的整体感知失真，从而增强或维持视觉质量。

4. 发明授权

US08693537B2 Region-of-interest coding with background skipping for video telephony 失效
标题翻译：视频电话背景跳过的利益区域编码
公开(公告)号：US08693537B2
公开(公告)日：2014-04-08
申请号：US11199937
申请日：2005-08-09
申请人： Haohong Wang , Khaled Helmi El-Maleh
发明人： Haohong Wang , Khaled Helmi El-Maleh
IPC分类号： H04N7/12
CPC分类号： H04N19/198 , H04N19/115 , H04N19/126 , H04N19/132 , H04N19/137 , H04N19/14 , H04N19/147 , H04N19/154 , H04N19/162 , H04N19/17 , H04N19/172 , H04N19/176 , H04N19/177 , H04N19/196 , H04N19/587
摘要： The disclosure is directed to techniques for region-of-interest (ROI) coding for video telephony (VT). The disclosed techniques include adaptive skipping of non-ROI (i.e., background) areas to conserve encoding bits for allocation to the ROI.
摘要翻译：本公开涉及用于视频电话（VT）的感兴趣区域（ROI）编码技术。所公开的技术包括非ROI（即背景）区域的自适应跳过以节省用于分配给ROI的编码比特。

5. 发明授权

US08265349B2 Intra-mode region-of-interest video object segmentation 失效
标题翻译：视频内部模式区域视频对象分割
公开(公告)号：US08265349B2
公开(公告)日：2012-09-11
申请号：US11350376
申请日：2006-02-07
申请人： Haohong Wang , Khaled Helmi El-Maleh
发明人： Haohong Wang , Khaled Helmi El-Maleh
IPC分类号： G06K9/00 , G06K9/34
CPC分类号： H04N19/17 , G06K9/00234 , G06K9/00248 , G06K9/00261 , G06K9/00604
摘要： The disclosure is directed to techniques for automatic segmentation of a region-of-interest (ROI) video object from a video sequence. ROI object segmentation enables selected ROI or “foreground” objects of a video sequence that may be of interest to a viewer to be extracted from non-ROI or “background” areas of the video sequence. Examples of a ROI object are a human face or a head and shoulder area of a human body. The disclosed techniques include a hybrid technique that combines ROI feature detection, region segmentation, and background subtraction. In this way, the disclosed techniques may provide accurate foreground object generation and low-complexity extraction of the foreground object from the video sequence. A ROI object segmentation system may implement the techniques described herein. In addition, ROI object segmentation may be useful in a wide range of multimedia applications that utilize video sequences, such as video telephony applications and video surveillance applications.
摘要翻译：本公开涉及从视频序列自动分割感兴趣区域（ROI）视频对象的技术。 ROI对象分割使得可以从视频序列的非ROI或“背景”区域中提取观看者感兴趣的视频序列的所选ROI或“前景”对象。 ROI对象的示例是人体的人脸或头肩部区域。所公开的技术包括组合ROI特征检测，区域分割和背景减除的混合技术。以这种方式，所公开的技术可以从视频序列提供前景对象生成和前景对象的低复杂度提取的准确性。 ROI对象分割系统可以实现本文描述的技术。此外，ROI对象分割可能在使用诸如视频电话应用和视频监控应用之类的视频序列的多种多媒体应用中是有用的。

6. 发明申请

US20120213409A1 DECODER-SIDE REGION OF INTEREST VIDEO PROCESSING 有权
标题翻译：解码器视频处理领域
公开(公告)号：US20120213409A1
公开(公告)日：2012-08-23
申请号：US13458387
申请日：2012-04-27
申请人： Khaled Helmi El-Maleh , Vijay Mahadevan , Haohong Wang
发明人： Khaled Helmi El-Maleh , Vijay Mahadevan , Haohong Wang
IPC分类号： G06K9/62
CPC分类号： H04N21/4621 , H04N19/117 , H04N19/126 , H04N19/159 , H04N19/17 , H04N19/176 , H04N19/186 , H04N19/44 , H04N19/46 , H04N19/48 , H04N19/70 , H04N19/895 , H04N21/4728
摘要： The disclosure is directed to decoder-side region-of-interest (ROI) video processing. A video decoder determines whether ROI assistance information is available. If not, the decoder defaults to decoder-side ROI processing. The decoder-side ROI processing may estimate the reliability of ROI extraction in the bitstream domain. If ROI reliability is favorable, the decoder applies bitstream domain ROI extraction. If ROI reliability is unfavorable, the decoder applies pixel domain ROI extraction. The decoder may apply different ROI extraction processes for intra-coded (I) and inter-coded (P or B) data. The decoder may use color-based ROI generation for intra-coded data, and coded block pattern (CBP)-based ROI generation for inter-coded data. ROI refinement may involve shape-based refinement for intra-coded data, and motion- and color-based refinement for inter-coded data.
摘要翻译：本公开涉及解码器侧感兴趣区域（ROI）视频处理。视频解码器确定ROI辅助信息是否可用。如果不是，则解码器默认为解码器侧ROI处理。解码器侧ROI处理可以估计比特流域中的ROI提取的可靠性。如果ROI可靠性较好，则解码器应用比特流域ROI提取。如果ROI可靠性不利，则解码器应用像素域ROI提取。解码器可以对帧内编码（I）和帧间编码（P或B）数据应用不同的ROI提取处理。解码器可以使用用于帧内编码数据的基于颜色的ROI生成，以及用于帧间编码数据的基于编码块模式（CBP）的ROI生成。 ROI细化可能涉及帧内编码数据的基于形状的细化，以及帧间编码数据的基于运动和颜色的细化。

7. 发明授权

US08150155B2 Multi-mode region-of-interest video object segmentation 有权
标题翻译：多模式感兴趣区域视频对象分割
公开(公告)号：US08150155B2
公开(公告)日：2012-04-03
申请号：US11349659
申请日：2006-02-07
申请人： Khaled Helmi El-Maleh , Haohong Wang
发明人： Khaled Helmi El-Maleh , Haohong Wang
IPC分类号： G06K9/34
CPC分类号： G06K9/00234 , G06K9/00248 , G06T7/11 , G06T7/174 , G06T7/194 , G06T7/215 , G06T2207/10016 , G06T2207/20036 , G06T2207/20132 , G06T2207/30201
摘要： The disclosure is directed to techniques for automatic segmentation of a region-of-interest (ROI) video object from a video sequence. ROI object segmentation enables selected ROI or “foreground” objects of a video sequence that may be of interest to a viewer to be extracted from non-ROI or “background” areas of the video sequence. Examples of a ROI object are a human face or a head and shoulder area of a human body. The disclosed techniques include a hybrid technique that combines ROI feature detection, region segmentation, and background subtraction. In this way, the disclosed techniques may provide accurate foreground object generation and low-complexity extraction of the foreground object from the video sequence. A ROI object segmentation system may implement the techniques described herein. In addition, ROI object segmentation may be useful in a wide range of multimedia applications that utilize video sequences, such as video telephony applications and video surveillance applications.
摘要翻译：本公开涉及从视频序列自动分割感兴趣区域（ROI）视频对象的技术。 ROI对象分割使得可以从视频序列的非ROI或“背景”区域中提取观看者感兴趣的视频序列的所选ROI或“前景”对象。 ROI对象的示例是人体的人脸或头肩部区域。所公开的技术包括组合ROI特征检测，区域分割和背景减除的混合技术。以这种方式，所公开的技术可以从视频序列提供前景对象生成和前景对象的低复杂度提取的准确性。 ROI对象分割系统可以实现本文描述的技术。此外，ROI对象分割可能在使用诸如视频电话应用和视频监控应用之类的视频序列的多种多媒体应用中是有用的。

8. 发明授权

US08768084B2 Region-of-interest coding in video telephony using RHO domain bit allocation 有权
标题翻译：使用RHO域位分配的视频电话中的兴趣区编码
公开(公告)号：US08768084B2
公开(公告)日：2014-07-01
申请号：US11199935
申请日：2005-08-09
申请人： Haohong Wang , Khaled Helmi El-Maleh
发明人： Haohong Wang , Khaled Helmi El-Maleh
IPC分类号： G06K9/36 , H04N11/04 , G06K9/46
CPC分类号： H04N19/198 , H04N19/115 , H04N19/126 , H04N19/132 , H04N19/137 , H04N19/14 , H04N19/147 , H04N19/154 , H04N19/162 , H04N19/17 , H04N19/172 , H04N19/196 , H04N19/587
摘要： The disclosure is directed to techniques for region-of-interest (ROI) coding for video telephony (VT). The disclosed techniques also include techniques for allocation of bits to ROI and non-ROI areas using weighted bit allocation models at the macroblock (MB) level within the ρ domain.
摘要翻译：本公开涉及用于视频电话（VT）的感兴趣区域（ROI）编码技术。所公开的技术还包括使用位于“R”区域内的宏块（MB）级别的加权比特分配模型来分配比特到ROI和非ROI区域的技术。域。

9. 发明授权

US08744203B2 Decoder-side region of interest video processing 有权
标题翻译：解码器侧感兴趣区域视频处理
公开(公告)号：US08744203B2
公开(公告)日：2014-06-03
申请号：US13458387
申请日：2012-04-27
申请人： Khaled Helmi El-Maleh , Vijay Mahadevan , Haohong Wang
发明人： Khaled Helmi El-Maleh , Vijay Mahadevan , Haohong Wang
IPC分类号： G06K9/00
CPC分类号： H04N21/4621 , H04N19/117 , H04N19/126 , H04N19/159 , H04N19/17 , H04N19/176 , H04N19/186 , H04N19/44 , H04N19/46 , H04N19/48 , H04N19/70 , H04N19/895 , H04N21/4728
摘要： The disclosure is directed to decoder-side region-of-interest (ROI) video processing. A video decoder determines whether ROI assistance information is available. If not, the decoder defaults to decoder-side ROI processing. The decoder-side ROI processing may estimate the reliability of ROI extraction in the bitstream domain. If ROI reliability is favorable, the decoder applies bitstream domain ROI extraction. If ROI reliability is unfavorable, the decoder applies pixel domain ROI extraction. The decoder may apply different ROI extraction processes for intra-coded (I) and inter-coded (P or B) data. The decoder may use color-based ROI generation for intra-coded data, and coded block pattern (CBP)-based ROI generation for inter-coded data. ROI refinement may involve shape-based refinement for intra-coded data, and motion- and color-based refinement for inter-coded data.
摘要翻译：本公开涉及解码器侧感兴趣区域（ROI）视频处理。视频解码器确定ROI辅助信息是否可用。如果不是，则解码器默认为解码器侧ROI处理。解码器侧ROI处理可以估计比特流域中的ROI提取的可靠性。如果ROI可靠性较好，则解码器应用比特流域ROI提取。如果ROI可靠性不利，则解码器应用像素域ROI提取。解码器可以对帧内编码（I）和帧间编码（P或B）数据应用不同的ROI提取处理。解码器可以使用用于帧内编码数据的基于颜色的ROI生成，以及用于帧间编码数据的基于编码块模式（CBP）的ROI生成。 ROI细化可能涉及帧内编码数据的基于形状的细化，以及帧间编码数据的基于运动和颜色的细化。

10. 发明授权

US08594180B2 3D video encoding 有权
标题翻译： 3D视频编码
公开(公告)号：US08594180B2
公开(公告)日：2013-11-26
申请号：US11677335
申请日：2007-02-21
申请人： Kai Chieh Yang , Haohong Wang , Khaled Helmi El-Maleh , Sharath Manjunath
发明人： Kai Chieh Yang , Haohong Wang , Khaled Helmi El-Maleh , Sharath Manjunath
IPC分类号： G06F21/00
CPC分类号： H04N19/194 , H04N13/122 , H04N19/124 , H04N19/147 , H04N19/149 , H04N19/172 , H04N19/176 , H04N19/597 , H04N19/61
摘要： A stereo 3D video frame includes left and right components that are combined to produce a stereo image. For a given amount of distortion, the left and right components may have different impacts on perceptual visual quality of the stereo image due to asymmetry in the distortion response of the human eye. A 3D video encoder adjusts an allocation of coding bits between left and right components of the 3D video based on a frame-level bit budget and a weighting between the left and right components. The video encoder may generate the bit allocation in the rho (ρ) domain. The weighted bit allocation may be derived based on a quality metric that indicates overall quality produced by the left and right components. The weighted bit allocation compensates for the asymmetric distortion response to reduce overall perceptual distortion in the stereo image and thereby enhance or maintain visual quality.
摘要翻译：立体3D视频帧包括组合以产生立体图像的左和右组件。对于给定量的失真，由于人眼的失真响应的不对称，左和右分量可能对立体图像的感知视觉质量具有不同的影响。 3D视频编码器基于帧级比特预算和左右分量之间的加权来调整3D视频的左和右分量之间的编码比特的分配。视频编码器可以在rho（rho）域中生成比特分配。可以基于指示左组件和右组件产生的总体质量的质量度量来导出加权比特分配。加权比特分配补偿非对称失真响应，以减少立体图像中的整体感知失真，从而增强或维持视觉质量。

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