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1. 发明授权

US08582904B2 Method of second order prediction and video encoder and decoder using the same 有权
标题翻译：二阶预测方法和视频编码器与解码器的使用方法相同
公开(公告)号：US08582904B2
公开(公告)日：2013-11-12
申请号：US12738205
申请日：2008-10-14
申请人： Lu Yu , Sijia Chen , Jianpeng Wang
发明人： Lu Yu , Sijia Chen , Jianpeng Wang
IPC分类号： H04N7/12
CPC分类号： H04N19/105 , H04N19/172 , H04N19/194 , H04N19/61
摘要： A method and apparatus for second order prediction are provided. In the decoding method, the reconstruction of decoded picture comprises second order prediction and compensation and second prediction storage. The second order prediction and compensation comprises first prediction and compensation and second prediction and compensation, input of which includes reconstructed first order residue and second order residue. The encoding method comprises second order prediction and second prediction storage. Second order prediction consists of first prediction and second prediction, input of which includes reconstructed first order residue and second order residue, and it will generate bit-stream accordingly. This invention will eliminate redundancy using second order prediction encoding and decoding method, so that coding efficiency will be improved.
摘要翻译：提供了一种用于二阶预测的方法和装置。在解码方法中，解码图像的重建包括二阶预测和补偿以及第二预测存储。二阶预测和补偿包括第一预测和补偿以及第二预测和补偿，其输入包括重建的一阶残差和二阶残差。编码方法包括二阶预测和第二预测存储。二阶预测由第一预测和第二预测组成，其输入包括重建的一阶残差和二阶残差，并且相应地生成比特流。本发明将使用二阶预测编码和解码方法消除冗余，从而提高编码效率。

2. 发明申请

US20100310184A1 DUAL PREDICTION VIDEO ENCODING AND DECODING METHOD AND DEVICE 有权
标题翻译：双预测视频编码和解码方法和设备
公开(公告)号：US20100310184A1
公开(公告)日：2010-12-09
申请号：US12738205
申请日：2008-10-14
申请人： Lu Yu , Sijia Chen , Jianpeng Wang
发明人： Lu Yu , Sijia Chen , Jianpeng Wang
IPC分类号： G06K9/46
CPC分类号： H04N19/105 , H04N19/172 , H04N19/194 , H04N19/61
摘要： A method and apparatus for second order prediction are provided. In the decoding method, the reconstruction of decoded picture comprises second order prediction and compensation and second prediction storage. The second order prediction and compensation comprises first prediction and compensation and second prediction and compensation, input of which includes reconstructed first order residue and second order residue. The encoding method comprises second order prediction and second prediction storage. Second order prediction consists of first prediction and second prediction, input of which includes reconstructed first order residue and second order residue, and it will generate bit-stream accordingly. This invention will eliminate redundancy using second order prediction encoding and decoding method, so that coding efficiency will be improved.
摘要翻译：提供了一种用于二阶预测的方法和装置。在解码方法中，解码图像的重建包括二阶预测和补偿以及第二预测存储。二阶预测和补偿包括第一预测和补偿以及第二预测和补偿，其输入包括重建的一阶残差和二阶残差。编码方法包括二阶预测和第二预测存储。二阶预测由第一预测和第二预测组成，其输入包括重建的一阶残差和二阶残差，并且相应地生成比特流。本发明将使用二阶预测编码和解码方法消除冗余，从而提高编码效率。

3. 发明申请

US20130148721A1 Reference Frame Management for Screen Content Video Coding Using Hash or Checksum Functions 有权
标题翻译：使用哈希或校验和功能的屏幕内容视频编码的参考帧管理
公开(公告)号：US20130148721A1
公开(公告)日：2013-06-13
申请号：US13526956
申请日：2012-06-19
申请人： Sijia Chen , Sawyer Shan , Hui Liu , Siping Tao
发明人： Sijia Chen , Sawyer Shan , Hui Liu , Siping Tao
IPC分类号： H04N7/32
CPC分类号： G09G5/001 , G09G2340/02 , G09G2340/0407 , G09G2340/0442 , G09G2360/12 , G09G2370/10 , H04N19/105 , H04N19/14 , H04N19/17 , H04N19/189 , H04N19/58
摘要： Techniques are provided for reference frame management for screen content video coding using hash or checksum functions. A video data stream including a plurality of frames is received, each frame including a plurality of pixels that define content within the frame. A plurality of hash code values associated with partitioned portions of a current frame are determined, where each hash code value is determined as an output value from a hash or checksum function based upon an input value comprising pixel values for a corresponding partition within the current frame. The current frame is compared with a plurality of reference frames based upon a comparison of the hash code values of the current frame with hash code values of the reference frames. A reference frame is selected as a candidate reference frame for coding the current frame.
摘要翻译：提供技术用于使用散列或校验和功能的屏幕内容视频编码的参考帧管理。接收包括多个帧的视频数据流，每个帧包括定义帧内的内容的多个像素。确定与当前帧的分割部分相关联的多个哈希代码值，其中基于包括当前帧内的对应分区的像素值的输入值，从哈希或校验和函数确定每个哈希码值作为输出值。基于当前帧的哈希码值与参考帧的哈希码值的比较，将当前帧与多个参考帧进行比较。选择参考帧作为用于对当前帧进行编码的候选参考帧。

4. 发明授权

US09332271B2 Utilizing a search scheme for screen content video coding 有权
标题翻译：利用屏幕内容视频编码的搜索方案
公开(公告)号：US09332271B2
公开(公告)日：2016-05-03
申请号：US13435199
申请日：2012-03-30
申请人： Sijia Chen , Kai Li , Wayne Liu , Siping Tao
发明人： Sijia Chen , Kai Li , Wayne Liu , Siping Tao
IPC分类号： H04N7/32 , H04N19/557 , H04N19/56 , H04N19/533
CPC分类号： H04N19/557 , H04N19/533 , H04N19/56
摘要： A method, a device and computer readable storage media facilitate providing screen content including a plurality of video frames that are displayed by a computing device. During coding of the screen content, a suitable predictor is found that is used to code pixel blocks from one or more frames. The suitable predictor is found by selecting a pixel block of a current frame, conducting a direction based search by comparing pixel blocks within a search window of a reference frame with the selected pixel block of the current frame to determine whether a match exists, and, in response to a determination that no sufficient match has been found, conducting a feature oriented search by comparing pixel blocks of the reference frame with the selected pixel block of the current frame to find a suitable match based upon a common feature.
摘要翻译：方法，设备和计算机可读存储介质便于提供包括由计算设备显示的多个视频帧的屏幕内容。在屏幕内容的编码期间，发现用于从一个或多个帧编码像素块的合适的预测器。通过选择当前帧的像素块，通过比较参考帧的搜索窗口内的像素块与当前帧的所选像素块来进行基于方向的搜索来确定是否存在匹配来找到合适的预测器，响应于确定没有发现足够的匹配，通过将参考帧的像素块与当前帧的所选像素块进行比较来进行面向特征的搜索，以基于共同特征找到合适的匹配。

5. 发明申请

US20130114704A1 Utilizing A Search Scheme for Screen Content Video Coding 有权
标题翻译：利用搜索方案进行屏幕内容视频编码
公开(公告)号：US20130114704A1
公开(公告)日：2013-05-09
申请号：US13435199
申请日：2012-03-30
申请人： Sijia Chen , Kai Li , Wayne Liu , Siping Tao
发明人： Sijia Chen , Kai Li , Wayne Liu , Siping Tao
IPC分类号： H04N7/32
CPC分类号： H04N19/557 , H04N19/533 , H04N19/56
摘要： A method, a device and computer readable storage media facilitate providing screen content including a plurality of video frames that are displayed by a computing device. During coding of the screen content, a suitable predictor is found that is used to code pixel blocks from one or more frames. The suitable predictor is found by selecting a pixel block of a current frame, conducting a direction based search by comparing pixel blocks within a search window of a reference frame with the selected pixel block of the current frame to determine whether a match exists, and, in response to a determination that no sufficient match has been found, conducting a feature oriented search by comparing pixel blocks of the reference frame with the selected pixel block of the current frame to find a suitable match based upon a common feature.
摘要翻译：方法，设备和计算机可读存储介质便于提供包括由计算设备显示的多个视频帧的屏幕内容。在屏幕内容的编码期间，发现用于从一个或多个帧编码像素块的合适的预测器。通过选择当前帧的像素块，通过比较参考帧的搜索窗口内的像素块与当前帧的所选像素块来进行基于方向的搜索来确定是否存在匹配来找到合适的预测器，响应于确定没有发现足够的匹配，通过将参考帧的像素块与当前帧的所选像素块进行比较来进行面向特征的搜索，以基于共同特征找到合适的匹配。

6. 发明授权

US08737464B1 Adaptive quantization for perceptual video coding 有权
标题翻译：感知视频编码的自适应量化
公开(公告)号：US08737464B1
公开(公告)日：2014-05-27
申请号：US13187900
申请日：2011-07-21
申请人： Huipin Zhang , Jing Wu , Sijia Chen , Dunbi Huang , Yi Guo
发明人： Huipin Zhang , Jing Wu , Sijia Chen , Dunbi Huang , Yi Guo
IPC分类号： H04N11/02
CPC分类号： H04N19/154 , H04N19/126 , H04N19/176
摘要： In one embodiment, a perceptual video coder obtains local video content, and calculates a feature index for each of one or more features of a video unit of the local video content. Each feature index is then directly mapped to a delta quantization parameter (QP) using a linear fractional model that explicitly establishes a relation between the delta QP and a Human Visual System (HVS) insensitivity index, e.g., where the delta QP is set based on a comparison between a local strength of the HVS insensitivity index and an overall strength of a particular frame of the local video content. Accordingly, a QP of an adaptive quantization may be refined by adding to it each delta QP, such that adaptive quantization may be performed on the video unit based on the refined QP.
摘要翻译：在一个实施例中，感知视频编码器获取本地视频内容，并且计算本地视频内容的视频单元的一个或多个特征中的每一个的特征索引。然后使用明确建立增量QP与人类视觉系统（HVS）不敏感性指数之间的关系的线性分数模型将每个特征索引直接映射到增量量化参数（QP），例如，其中基于 HVS不敏感指数的局部强度与本地视频内容的特定帧的总体强度之间的比较。因此，自适应量化的QP可以通过向其中加上每个ΔPQ来精化，使得可以基于精确的QP对视频单元执行自适应量化。

7. 发明申请

US20130166650A1 Efficient Frame Forwarding in Large Scale Real-Time Screen Content Sharing Meetings 有权
标题翻译：在大规模实时屏幕内容共享会议中高效的帧转发
公开(公告)号：US20130166650A1
公开(公告)日：2013-06-27
申请号：US13609326
申请日：2012-09-11
申请人： Sijia Chen , Wayne Liu , Siping Tao
发明人： Sijia Chen , Wayne Liu , Siping Tao
IPC分类号： G06F15/16
CPC分类号： H04N21/234381 , H04N19/107 , H04N19/164 , H04N19/172 , H04N21/23406 , H04N21/4788 , H04N21/8455
摘要： Techniques are provided to improve user experience at endpoint devices that are participating in a multipoint screen content sharing session. A server in a multipoint communication system receives video frames from a sending endpoint device in the communication session that involves one or more other endpoint devices that are to receive video frames from the sending endpoint device. The video frames include key reference frames that use either intra-frame prediction or inter-frame prediction based only on other key reference frames. The server stores the key reference frames. When a new receiving endpoint device joins the communication session, the server sends all the stored key reference frames to the new receiving endpoint device. All video frames received from the sending endpoint device are forwarded to existing ordinary receiving endpoint devices. Key reference frames and some, but not all, non-key reference video frames are forwarded to existing low-capacity receiving endpoint devices.
摘要翻译：提供技术来改善参与多点屏幕内容共享会话的端点设备的用户体验。多点通信系统中的服务器从通信会话中的发送端点设备接收视频帧，其涉及要从发送端点设备接收视频帧的一个或多个其他端点设备。视频帧包括仅基于其他关键参考帧使用帧内预测或帧间预测的关键参考帧。服务器存储关键参考帧。当新的接收端点设备加入通信会话时，服务器将所有存储的密钥参考帧发送到新的接收端点设备。从发送端点设备接收到的所有视频帧都转发到现有的普通接收端点设备。密钥参考帧和一些但不是全部的非密钥参考视频帧被转发到现有的低容量接收端点设备。

8. 发明授权

US09262986B2 Reference frame management for screen content video coding using hash or checksum functions 有权
标题翻译：使用散列或校验和功能的屏幕内容视频编码的参考帧管理
公开(公告)号：US09262986B2
公开(公告)日：2016-02-16
申请号：US13526956
申请日：2012-06-19
申请人： Sijia Chen , Sawyer Shan , Hui Liu , Siping Tao
发明人： Sijia Chen , Sawyer Shan , Hui Liu , Siping Tao
IPC分类号： H04N7/32 , G09G5/00 , H04N19/105 , H04N19/14 , H04N19/17 , H04N19/189 , H04N19/58
CPC分类号： G09G5/001 , G09G2340/02 , G09G2340/0407 , G09G2340/0442 , G09G2360/12 , G09G2370/10 , H04N19/105 , H04N19/14 , H04N19/17 , H04N19/189 , H04N19/58
摘要： Techniques are provided for reference frame management for screen content video coding using hash or checksum functions. A video data stream including a plurality of frames is received, each frame including a plurality of pixels that define content within the frame. A plurality of hash code values associated with partitioned portions of a current frame are determined, where each hash code value is determined as an output value from a hash or checksum function based upon an input value comprising pixel values for a corresponding partition within the current frame. The current frame is compared with a plurality of reference frames based upon a comparison of the hash code values of the current frame with hash code values of the reference frames. A reference frame is selected as a candidate reference frame for coding the current frame.
摘要翻译：提供技术用于使用散列或校验和功能的屏幕内容视频编码的参考帧管理。接收包括多个帧的视频数据流，每个帧包括定义帧内的内容的多个像素。确定与当前帧的分割部分相关联的多个哈希代码值，其中基于包括当前帧内的对应分区的像素值的输入值，从哈希或校验和函数确定每个哈希码值作为输出值。基于当前帧的哈希码值与参考帧的哈希码值的比较，将当前帧与多个参考帧进行比较。选择参考帧作为用于对当前帧进行编码的候选参考帧。

9. 发明授权

US09232244B2 Efficient frame forwarding in large scale real-time screen content sharing meetings 有权
标题翻译：高效的帧转发大规模实时屏幕内容共享会议
公开(公告)号：US09232244B2
公开(公告)日：2016-01-05
申请号：US13609326
申请日：2012-09-11
申请人： Sijia Chen , Wayne Liu , Siping Tao
发明人： Sijia Chen , Wayne Liu , Siping Tao
IPC分类号： G06F15/16 , H04N21/2343 , H04N21/234 , H04N21/845 , H04N19/172 , H04N19/107 , H04N19/164 , H04N21/4788
CPC分类号： H04N21/234381 , H04N19/107 , H04N19/164 , H04N19/172 , H04N21/23406 , H04N21/4788 , H04N21/8455
摘要： Techniques are provided to improve user experience at endpoint devices that are participating in a multipoint screen content sharing session. A server in a multipoint communication system receives video frames from a sending endpoint device in the communication session that involves one or more other endpoint devices that are to receive video frames from the sending endpoint device. The video frames include key reference frames that use either intra-frame prediction or inter-frame prediction based only on other key reference frames. The server stores the key reference frames. When a new receiving endpoint device joins the communication session, the server sends all the stored key reference frames to the new receiving endpoint device. All video frames received from the sending endpoint device are forwarded to existing ordinary receiving endpoint devices. Key reference frames and some, but not all, non-key reference video frames are forwarded to existing low-capacity receiving endpoint devices.
摘要翻译：提供技术来改善参与多点屏幕内容共享会话的端点设备的用户体验。多点通信系统中的服务器从通信会话中的发送端点设备接收视频帧，其涉及要从发送端点设备接收视频帧的一个或多个其他端点设备。视频帧包括仅基于其他关键参考帧使用帧内预测或帧间预测的关键参考帧。服务器存储关键参考帧。当新的接收端点设备加入通信会话时，服务器将所有存储的密钥参考帧发送到新的接收端点设备。从发送端点设备接收到的所有视频帧都转发到现有的普通接收端点设备。密钥参考帧和一些但不是全部的非密钥参考视频帧被转发到现有的低容量接收端点设备。

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