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

US20150098507A1 MOTION ESTIMATION APPARATUS AND METHOD FOR MULTIVIEW VIDEO 有权
标题翻译：运动估计装置和多媒体视频的方法
公开(公告)号：US20150098507A1
公开(公告)日：2015-04-09
申请号：US14046095
申请日：2013-10-04
申请人： ATI Technologies ULC
发明人： Jiao Wang
IPC分类号： H04N19/597 , H04N19/423 , H04N19/51
CPC分类号： H04N19/513 , H04N7/147 , H04N19/597 , H04N21/2365
摘要： A motion estimation apparatus and method (carried out electronically) provides for encoding of multiview video, such as stereoscopic video, by providing motion estimation for pixels in a dependent eye view, using motion vector information from a colocated group of pixels in a base eye view and neighboring pixels to the colocated group of pixels in the base eye view. The method and apparatus encodes a group of pixels in a dependent eye view based on the estimated motion vector information. The method and apparatus may also include obtaining a frame of pixels that includes both base eye view pixels and dependent eye pixels so that, for example, frame compatible format packing can be employed. In one example, estimating the motion vector information for a block of pixels, for example, in a dependent eye view is based on a median value calculation of motion vectors for a block of pixels in a base eye view and motion vectors for neighboring blocks of pixels to the colocated group of pixels in the base eye view. An apparatus and method may include transmitting the encoded dependent eye view and base eye view information to another device and decoding the encoded dependent eye view and base eye view information for display.
摘要翻译：运动估计装置和方法（以电子方式执行）通过使用来自基眼视图中来自共坐标像组的运动矢量信息，通过提供依赖眼视图中的像素的运动估计来提供多视图视频（例如立体视频）的编码以及基眼视图中的被配置的像素组的相邻像素。该方法和装置基于所估计的运动矢量信息对依赖眼视图中的一组像素进行编码。所述方法和装置还可以包括获得包括基本眼视图像素和从属眼睛像素的像素帧，使得例如可以采用帧兼容格式包装。在一个示例中，例如在依赖眼视图中估计用于像素块的运动矢量信息是基于基眼视图中的像素块的运动矢量的中值计算和相邻块的相邻块的运动矢量像素到基眼视图中的共坐标像素组。一种装置和方法可以包括将经编码的依赖眼视图和基本眼视图信息发送到另一设备，并且解码编码的依赖眼视图和基础眼视图信息以供显示。

2. 发明申请

US20150071339A1 PERFORMING VIDEO ENCODING MODE DECISION BASED ON MOTION ACTIVITY 有权
标题翻译：基于运动活动执行视频编码模式决策
公开(公告)号：US20150071339A1
公开(公告)日：2015-03-12
申请号：US14021185
申请日：2013-09-09
申请人： ATI Technologies ULC
发明人： Jiao Wang
IPC分类号： H04N19/51 , H04N19/583 , H04N19/567 , H04N19/103
CPC分类号： H04N19/109 , H04N19/137 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/40 , H04N19/59
摘要： A method and apparatus are described for performing video encoding mode decisions. A down-scaled frame is received that includes a macroblock corresponding to a first subset of macroblocks of a first area in a full-scale frame. A first average motion vector is calculated for the first subset of macroblocks, and a second average motion vector is calculated for a second subset of macroblocks of a second area surrounding the first subset of macroblocks. A comparison of a threshold to a distance measure between absolute values of the first and second average motion vectors is performed. A prediction mode for the macroblock in the down-scaled frame is determined based on the comparison to generate predicted blocks.
摘要翻译：描述了用于执行视频编码模式决定的方法和装置。接收缩小的帧，其包括对应于全刻度帧中的第一区域的宏块的第一子集的宏块。针对宏块的第一子集计算第一平均运动矢量，并且针对第一宏块子集的第二区域的宏块的第二子集计算第二平均运动矢量。执行阈值与第一和第二平均运动矢量的绝对值之间的距离测量的比较。基于比较来确定缩小帧中的宏块的预测模式，以生成预测块。

3. 发明申请

US20200169760A1 SCENE CHANGE DETECTION AND HANDLING 审中-公开
公开(公告)号：US20200169760A1
公开(公告)日：2020-05-28
申请号：US16203326
申请日：2018-11-28
申请人： ATI Technologies ULC
发明人： Jiao Wang , Lei Zhang , Ying Zhang , Edward A. Harold
IPC分类号： H04N19/87 , H04N19/142 , H04N19/132 , H04N19/159 , H04N19/179 , H04N19/176
摘要： Systems, methods, and devices for scene change detection and image encoding. A sequence of image frames is input. For a first image frame of the sequence, a first total sum of absolute transformed differences (SATD) is calculated. For a second frame of the sequence, a second total SATD is calculated. An absolute difference between the first total SATD and the second total SATD is calculated. If the absolute difference meets or exceeds a threshold, the second frame and a third frame of the sequence subsequent to the second frame are encoded based on a scene change, and the second frame and the third frame are transmitted. If the absolute difference does not meet or exceed the threshold, the second frame is encoded based on a same scene and the second frame is transmitted.

4. 发明授权

US10045003B2 Efficient mode decision method for multiview video coding based on motion vectors 有权
公开(公告)号：US10045003B2
公开(公告)日：2018-08-07
申请号：US15099247
申请日：2016-04-14
申请人： ATI Technologies ULC
发明人： Jiao Wang , Mohamed K. Cherif
IPC分类号： H04N13/00 , H04N19/103 , H04N19/597 , H04N19/139 , H04N19/176 , H04N19/147
摘要： A method for determining a macroblock (MB) coding mode for a current MB in a dependent view. A window around a co-located MB in a base view is determined, wherein the co-located MB is a MB in the base view having a same location as the current MB in the dependent view. A coding mode complexity value (CMCV) is determined for each MB in the window, wherein the CMCV is based on a coding mode used to encode the MB. Rate distortion optimization (RDO) is performed for the current MB using a reduced number of coding modes if a total CMCV for all MBs in the window is less than a threshold, or using all supported coding modes if the total CMCV for all MBs in the window is greater than the threshold. A coding mode for the current MB is determined based on the RDO results.

5. 发明授权

US11563945B2 Adaptive offset for variance based quantization 有权
公开(公告)号：US11563945B2
公开(公告)日：2023-01-24
申请号：US16588975
申请日：2019-09-30
申请人： Advanced Micro Devices, Inc. , ATI Technologies ULC
发明人： Jiao Wang , Ying Zhang , Richard George , Edward A. Harold , Zhenhua Yang
IPC分类号： H04N19/124 , H04N19/13 , H04N19/146 , H04N19/172 , H04N19/176 , H04N19/182 , H04N19/196
摘要： A technique for determining an adaptive quantization parameter offset for a block of encoded video includes obtaining a rate control factor for the quantization parameter, determining a content-based quantization parameter factor for the quantization parameter, determining an adaptive variance based quantization offset based on content-based quantization parameter factors for a frame prior to the current frame, and combining the rate control factor, the content-based quantization parameter factor, and the adaptive offset to generate the quantization parameter.

6. 发明申请

US20140354771A1 EFFICIENT MOTION ESTIMATION FOR 3D STEREO VIDEO ENCODING 审中-公开
标题翻译： 3D立体声视频编码的有效运动估计
公开(公告)号：US20140354771A1
公开(公告)日：2014-12-04
申请号：US13904766
申请日：2013-05-29
申请人： ATI Technologies ULC
发明人： Jiao Wang , Gabor Sines
IPC分类号： H04N13/00
CPC分类号： H04N19/30 , H04N19/503 , H04N19/52 , H04N19/56 , H04N19/597
摘要： An efficient motion estimation method and apparatus for 3D stereo video encoding is described herein. In an embodiment of the method, an enhancement layer motion vector for a frame is determined by obtaining a motion vector of a co-located macroblock (MB) from the same frame of a base layer. The motion vectors of a predetermined number of surrounding MBs from the same frame of the base layer are also obtained. A predicted motion vector for the MB of the frame in the enhancement layer is determined using, for example, a median value from the motion vectors associated with the co-located MB and the predetermined number of surrounding MBs. A small or less than full range motion refinement is performed to obtain a final motion vector, where full range refers to the maximum search range supported by an encoder performing the method.
摘要翻译：本文描述了一种用于3D立体视频编码的高效运动估计方法和装置。在该方法的实施例中，通过从基本层的相同帧获得同位置宏块（MB）的运动矢量来确定用于帧的增强层运动矢量。还获得了来自基层的同一帧的预定数量的周围MB的运动矢量。使用例如来自与同位置MB和预定数量的周围MB相关联的运动向量的中值来确定增强层中的帧的MB的预测运动矢量。执行小或小于全范围运动细化以获得最终运动矢量，其中全范围是指由执行该方法的编码器支持的最大搜索范围。

7. 发明授权

US11368692B2 Content adaptive quantization strength and bitrate modeling 有权
公开(公告)号：US11368692B2
公开(公告)日：2022-06-21
申请号：US16177128
申请日：2018-10-31
申请人： ATI Technologies ULC
发明人： Jinbo Qiu , Yang Liu , Ihab Amer , Lei Zhang , Edward A. Harold , Zhiqi Hao , Jiao Wang , Gabor Sines , Haibo Liu , Boris Ivanovic
IPC分类号： H04N19/124 , H04N19/176 , H04N19/172
摘要： Systems, apparatuses, and methods for generating a model for determining a quantization strength to use when encoding video frames are disclosed. A pre-encoder performs multiple encoding passes using different quantization strengths on a portion or the entirety of one or more pre-processed video frames. The pre-encoder captures the bit-size of the encoded output for each of the multiple encoding passes. Then, based on the multiple encoding passes, the pre-encoder generates a model for mapping bit-size to quantization strength for encoding video frames or portion(s) thereof. When the encoder begins the final encoding pass for one or more given video frames or any portion(s) thereof, the encoder uses the model to map a preferred bit-size to a given quantization strength. The encoder uses the given quantization strength when encoding the given video frame(s) or frame portion(s) to meet a specified bit-rate for the encoded bitstream.

8. 发明授权

US09832479B2 Motion estimation apparatus and method for multiview video 有权
公开(公告)号：US09832479B2
公开(公告)日：2017-11-28
申请号：US14046095
申请日：2013-10-04
申请人： ATI Technologies ULC
发明人： Jiao Wang
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N19/513 , H04N19/597 , H04N7/14 , H04N21/2365
CPC分类号： H04N19/513 , H04N7/147 , H04N19/597 , H04N21/2365
摘要： A motion estimation apparatus and method (carried out electronically) provides for encoding of multiview video, such as stereoscopic video, by providing motion estimation for pixels in a dependent eye view, using motion vector information from a colocated group of pixels in a base eye view and neighboring pixels to the colocated group of pixels in the base eye view. The method and apparatus encodes a group of pixels in a dependent eye view based on the estimated motion vector information. The method and apparatus may also include obtaining a frame of pixels that includes both base eye view pixels and dependent eye pixels so that, for example, frame compatible format packing can be employed. In one example, estimating the motion vector information for a block of pixels, for example, in a dependent eye view is based on a median value calculation of motion vectors for a block of pixels in a base eye view and motion vectors for neighboring blocks of pixels to the colocated group of pixels in the base eye view. An apparatus and method may include transmitting the encoded dependent eye view and base eye view information to another device and decoding the encoded dependent eye view and base eye view information for display.

9. 发明授权

US09736477B2 Performing video encoding mode decision based on motion activity 有权
公开(公告)号：US09736477B2
公开(公告)日：2017-08-15
申请号：US14021185
申请日：2013-09-09
申请人： ATI Technologies ULC
发明人： Jiao Wang
IPC分类号： H04N19/109 , H04N19/137 , H04N19/176 , H04N19/40 , H04N19/59 , H04N19/147 , H04N19/19
CPC分类号： H04N19/109 , H04N19/137 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/40 , H04N19/59
摘要： A method and apparatus are described for performing video encoding mode decisions. A down-scaled frame is received that includes a macroblock corresponding to a first subset of macroblocks of a first area in a full-scale frame. A first average motion vector is calculated for the first subset of macroblocks, and a second average motion vector is calculated for a second subset of macroblocks of a second area surrounding the first subset of macroblocks. A comparison of a threshold to a distance measure between absolute values of the first and second average motion vectors is performed. A prediction mode for the macroblock in the down-scaled frame is determined based on the comparison to generate predicted blocks.

10. 发明授权

US09497439B2 Apparatus and method for fast multiview video coding 有权
标题翻译：用于快速多视点视频编码的装置和方法
公开(公告)号：US09497439B2
公开(公告)日：2016-11-15
申请号：US13942280
申请日：2013-07-15
申请人： ATI TECHNOLOGIES ULC
发明人： Jiao Wang
IPC分类号： H04N19/51 , H04N13/00 , H04N19/597 , H04N19/53
CPC分类号： H04N13/161 , H04N19/53 , H04N19/597
摘要： Generally, an apparatus and a method for encoding multiview video downscale two views of the multiview video, determine a shift between the downscaled views, and encode one the two views using the shift.
摘要翻译：一般来说，用于对多视点视频进行二次视图缩减的多视点视频编码的装置和方法，确定缩小的视图之间的移动，并使用该移位对两个视图进行编码。

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