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81. 发明申请

US20090067491A1 Learning-Based Image Compression 有权
标题翻译：基于学习的图像压缩
公开(公告)号：US20090067491A1
公开(公告)日：2009-03-12
申请号：US11851653
申请日：2007-09-07
申请人： Xiaoyan Sun , Feng Wu , Shipeng Li
发明人： Xiaoyan Sun , Feng Wu , Shipeng Li
IPC分类号： G06T9/00
CPC分类号： H04N19/59 , H04N19/132 , H04N19/14 , H04N19/587 , H04N19/85 , H04N19/90
摘要： Learning-based image compression is described. In one implementation, an encoder possessing a first set of learned visual knowledge primitives excludes visual information from an image prior to compression. A decoder possessing an independently learned set of visual knowledge primitives synthesizes the excluded visual information into the image after decompression. The encoder and decoder are decoupled with respect to the information excluded at the encoder and the information synthesized at the decoder. This results in superior data compression since the information excluded at the encoder is dropped completely and not transferred to the decoder. Primitive visual elements synthesized at the decoder may be different than primitive visual elements dropped at the encoder, but the resulting reconstituted image is perceptually equivalent to the original image.
摘要翻译：描述基于学习的图像压缩。在一个实现中，具有第一组学习视觉知识原语的编码器在压缩之前从图像中排除视觉信息。具有独立学习的视觉知识图元组的解码器在解压缩之后将排除的视觉信息合成到图像中。编码器和解码器相对于在编码器处排除的信息和在解码器处合成的信息去耦合。这导致优异的数据压缩，因为在编码器处排除的信息完全丢弃并且不传送到解码器。在解码器处合成的原始视觉元素可能不同于在编码器处丢弃的原始视觉元素，但是所产生的重构图像在听觉上等同于原始图像。

82. 发明授权

US07388521B2 Request bits estimation for a Wyner-Ziv codec 有权
标题翻译：为Wyner-Ziv编解码器请求比特估计
公开(公告)号：US07388521B2
公开(公告)日：2008-06-17
申请号：US11537947
申请日：2006-10-02
申请人： Yan Lu , Mei Guo , Feng Wu , Shipeng Li
发明人： Yan Lu , Mei Guo , Feng Wu , Shipeng Li
IPC分类号： H03M7/34
CPC分类号： H03M7/30 , H04N19/395
摘要： Request bits estimation for a Wyner-Ziv codec is described. In one aspect, and prior to communicating Wyner-Ziv parity bits to a Wyner-Ziv decoder, an estimated total number of parity bits to send to the Wyner-Ziv decoder are determined. This estimated number of parity bits allows the Wyner-Ziv decoder to reconstruct a frame of different coded content using the Wyner-Ziv parity bits such that the reconstructed frame will meet particular quality criteria. This estimated number of parity bits is determined independent of a request-bits feedback loop between the Wyner-Ziv coder and the Wyner-Ziv decoder. The estimated number of parity bits is communicated to the Wyner-Ziv decoder for reconstruction and presentation of the frame to a user.
摘要翻译：描述了Wyner-Ziv编解码器的请求比特估计。在一个方面中，并且在将Wyner-Ziv奇偶校验位传送到Wyner-Ziv解码器之前，确定发送到Wyner-Ziv解码器的估计的奇偶校验位数。该估计的奇偶校验位数允许Wyner-Ziv解码器使用Wyner-Ziv奇偶校验位来重建不同编码内容的帧，使得重建的帧将满足特定的质量标准。独立于Wyner-Ziv编码器和Wyner-Ziv解码器之间的请求位反馈环路来确定该估计的奇偶校验位数。将估计的奇偶校验位数传送给Wyner-Ziv解码器，以重构并向用户呈现帧。

83. 发明申请

US20070201751A1 Block-Based Fast Image Compression 有权
标题翻译：基于块的快速图像压缩
公开(公告)号：US20070201751A1
公开(公告)日：2007-08-30
申请号：US11276342
申请日：2006-02-24
申请人： Feng Wu , Bo Qin , Wenpeng Ding , Dong Liu , Jian Wang , Yuwen He , Zheng Ni
发明人： Feng Wu , Bo Qin , Wenpeng Ding , Dong Liu , Jian Wang , Yuwen He , Zheng Ni
IPC分类号： G06K9/36
CPC分类号： G06K9/00456 , H04N19/12 , H04N19/124 , H04N19/14 , H04N19/147 , H04N19/149 , H04N19/176 , H04N19/19 , H04N19/196
摘要： Systems and methods for block-based fast image compression are described. In one aspect, a digital image is segmented into multiple blocks. A respective set of statistical characteristics is identified for each of the segmented blocks. Each of the blocks is encoded with a particular encoding algorithm of multiple encoding algorithms. The particular encoding algorithm that is used to encode a particular block segmented from the digital image is selected to efficiently encode the block in view of statistical characteristics associated with the block. Thus, blocks of different block types may be encoded with different encoding algorithms.
摘要翻译：描述了基于块的快速图像压缩的系统和方法。在一个方面，数字图像被分割成多个块。针对每个分段块识别相应的一组统计特性。每个块都用多种编码算法的特定编码算法进行编码。选择用于编码从数字图像分割的特定块的特定编码算法，以便考虑到与块相关联的统计特性来有效地对块进行编码。因此，不同块类型的块可以用不同的编码算法进行编码。

84. 发明授权

US07154952B2 Timestamp-independent motion vector prediction for predictive (P) and bidirectionally predictive (B) pictures 有权
公开(公告)号：US07154952B2
公开(公告)日：2006-12-26
申请号：US10620320
申请日：2003-07-15
申请人： Alexandros Tourapis , Shipeng Li , Feng Wu , Gary J. Sullivan
发明人： Alexandros Tourapis , Shipeng Li , Feng Wu , Gary J. Sullivan
IPC分类号： H04N7/12
CPC分类号： H04N19/00684 , H04N19/103 , H04N19/105 , H04N19/109 , H04N19/137 , H04N19/142 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/513 , H04N19/52 , H04N19/61 , H04N19/70
摘要： Methods and apparatuses are provided for achieving improved video coding efficiency through the use of Motion Vector Predictors (MVPs) for the encoding or decoding of motion parameters within the calculation of the motion information in B pictures and/or P pictures. Certain exemplary methods and apparatuses selectively apply temporal and/or spatial prediction. Rate Distortion Optimization (RDO) techniques are also applied in certain methods and apparatuses to further help improve coding efficiency.

85. 发明申请

US20060072662A1 Improved Video Coding 有权
标题翻译：改进的视频编码
公开(公告)号：US20060072662A1
公开(公告)日：2006-04-06
申请号：US11275103
申请日：2005-12-09
申请人： Alexandros Tourapis , Feng Wu , Shipeng Li
发明人： Alexandros Tourapis , Feng Wu , Shipeng Li
IPC分类号： H04N7/12 , H04N11/04 , H04B1/66 , H04N11/02
CPC分类号： H04N19/109 , H04N19/147 , H04N19/176 , H04N19/513 , H04N19/52 , H04N19/56 , H04N19/573 , H04N19/577
摘要： Improved video coding is described to encode video data within a sequence of video frames. To this end, at least a portion of a reference frame is encoded to include motion information associated with the portion of the reference frame. At least a portion of a predictable frame that includes video data predictively correlated to said portion of said reference frame is defined based on the motion information. At least said portion of the predictable frame is encoded without including corresponding motion information and including mode identifying data. The mode identifying data indicate that the encoded portion of the predictable frame can be directly derived using at least the motion information associated with the portion of the reference frame.
摘要翻译：描述了改进的视频编码以对视频帧序列内的视频数据进行编码。为此，参考帧的至少一部分被编码以包括与参考帧的该部分相关联的运动信息。基于运动信息来定义包括与所述参考帧的所述部分预测相关的视频数据的可预测帧的至少一部分。可预测帧的至少所述部分被编码而不包括对应的运动信息并且包括模式识别数据。模式识别数据指示可以使用至少与参考帧的部分相关联的运动信息直接导出可预测帧的编码部分。

86. 发明申请

US20060067402A1 Seamless switching of scalable video bitstreams 有权
公开(公告)号：US20060067402A1
公开(公告)日：2006-03-30
申请号：US11280619
申请日：2005-11-16
申请人： Feng Wu , Shipeng Li , Xiaoyan Sun , Ya-Qin Zhang
发明人： Feng Wu , Shipeng Li , Xiaoyan Sun , Ya-Qin Zhang
IPC分类号： H04N7/12 , H04B1/66 , H04N11/02 , H04N11/04
CPC分类号： G06T9/00 , H04N21/234327 , H04N21/2402 , H04N21/2662
摘要： A seamless bitstream switching schema is presented. The schema takes advantage of both the high coding efficiency of non-scalable bitstreams and the flexibility of scalable bitstreams. Small bandwidth fluctuations are accommodated by the scalability of the bitstreams, while large bandwidth fluctuations are tolerated by switching among scalable bitstreams. This seamless bitstream switching schema significantly improves the efficiency of scalable video coding over a broad range of bit rates.

87. 发明申请

US20050195895A1 System and method for robust video coding using progressive fine-granularity scalable (PFGS) coding 有权
公开(公告)号：US20050195895A1
公开(公告)日：2005-09-08
申请号：US11120249
申请日：2005-05-02
申请人： Feng Wu , Shipeng Li , Ya-Qin Zhang
发明人： Feng Wu , Shipeng Li , Ya-Qin Zhang
IPC分类号： G06T9/00 , H04N19/895 , H04N7/12
CPC分类号： H04N19/36 , H04N19/105 , H04N19/157 , H04N19/169 , H04N19/34 , H04N19/503 , H04N19/51 , H04N19/895
摘要： A video encoding scheme employs progressive fine-granularity layered coding to encode video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video. Some of the enhancement layers in a current frame are predicted from at least one lower quality layer in a reference frame, whereby the lower quality layer is not necessarily the base layer.

88. 发明申请

US20050147163A1 Scalable video transcoding 有权
标题翻译：可扩展视频转码
公开(公告)号：US20050147163A1
公开(公告)日：2005-07-07
申请号：US10749975
申请日：2003-12-30
申请人： Shipeng Li , Lujun Yuan , Qi Chen , Feng Wu
发明人： Shipeng Li , Lujun Yuan , Qi Chen , Feng Wu
IPC分类号： H04N7/12 , H04N7/26 , H04N7/46 , H04N7/50
CPC分类号： H04N19/198 , H04N19/105 , H04N19/115 , H04N19/124 , H04N19/132 , H04N19/136 , H04N19/147 , H04N19/152 , H04N19/156 , H04N19/159 , H04N19/172 , H04N19/19 , H04N19/196 , H04N19/197 , H04N19/40 , H04N19/577 , H04N19/587 , H04N19/61
摘要： A scalable video transcoder with limited drifting error is disclosed. The transcoder accumulates re-quantization errors of I-frames or P-frames. The accumulated errors are only selectively introduced into the transcoding loop in every block to compensate for transcoding errors. A threshold algorithm adaptively utilizes the accumulated errors at block level to control drifting error at an acceptable limited level. Transcoder complexity is scalable because a DCT transform may be removed from the transcoder loop when the accumulated errors are not used for compensation. The re-quantization process can be simply implemented by look-up table(s), which significantly reduces the complexity of the re-quantization process.
摘要翻译：公开了一种具有有限漂移误差的可扩展视频转码器。代码转换器累积I帧或P帧的重量化误差。累积的错误仅在每个块中选择性地引入到代码转换循环中以补偿代码转换错误。门限算法自适应地利用块级别的累积误差来控制漂移误差在可接受的限制水平。代码转换器复杂度是可扩展的，因为当累积误差不用于补偿时，可以从代码转换器循环中去除DCT变换。重新量化过程可以通过查找表简单地实现，这显着地降低了重新量化过程的复杂性。

89. 发明申请

US20050089105A1 Systems and methods with error resilience in enhancement layer bitstream of scalable video coding 失效
标题翻译：在可扩展视频编码的增强层比特流中具有错误弹性的系统和方法
公开(公告)号：US20050089105A1
公开(公告)日：2005-04-28
申请号：US10978277
申请日：2004-10-29
申请人： Ya-Qin Zhang , Shipeng Li , Feng Wu , Rong Yan
发明人： Ya-Qin Zhang , Shipeng Li , Feng Wu , Rong Yan
IPC分类号： G06T9/00 , H04N19/89 , H04N7/12
CPC分类号： H04N19/29 , H04N19/34 , H04N19/68 , H04N19/89
摘要： A scalable layered video coding scheme that encodes video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video, adds error resilience to the enhancement layer. Unique resynchronization marks are inserted into the enhancement layer bitstream in headers associated with each video packet, headers associated with each bit plane, and headers associated with each video-of-plane (VOP) segment. Following transmission of the enhancement layer bitstream, the decoder tries to detect errors in the packets. Upon detection, the decoder seeks forward in the bitstream for the next known resynchronization mark. Once this mark is found, the decoder is able to begin decoding the next video packet. With the addition of many resynchronization marks within each frame, the decoder can recover very quickly and with minimal data loss in the event of a packet loss or channel error in the received enhancement layer bitstream. The video coding scheme also facilitates redundant encoding of header information from the higher-level VOP header down into lower level bit plane headers and video packet headers. Header extension codes are added to the bit plane and video packet headers to identify whether the redundant data is included.
摘要翻译：将视频数据帧编码成多层的可分级的分层视频编码方案，包括具有越来越高质量视频的较低质量视频和多个增强层的基本层，向增强层增加了错误恢复能力。将独特的再同步标记插入到与每个视频分组相关联的报头中的增强层比特流中，与每个位平面相关联的报头以及与每个视频平面（VOP）段相关联的报头。在传输增强层比特流之后，解码器尝试检测分组中的错误。在检测到时，解码器在比特流中向前寻找下一个已知的再同步标记。一旦找到该标记，解码器就可以开始对下一个视频数据包进行解码。通过在每个帧内添加许多重新同步标记，解码器可以在接收到的增强层比特流中的分组丢失或信道错误的情况下非常快速地恢复并且具有最小的数据丢失。视频编码方案还有助于将标题信息从较高级别的VOP头部冗余编码到较低级位平面头部和视频分组头部。标题扩展码被添加到位平面和视频分组报头，以标识是否包括冗余数据。

90. 发明授权

US08783880B2 Rulable multi-directional prism cluster retroreflective sheeting 有权
标题翻译：统治多方位棱镜簇逆反射片
公开(公告)号：US08783880B2
公开(公告)日：2014-07-22
申请号：US13286505
申请日：2011-11-01
申请人： Steven R. Chapman , Feng Wu , Ethelbert Galicia
发明人： Steven R. Chapman , Feng Wu , Ethelbert Galicia
IPC分类号： G02B5/124
CPC分类号： G02B5/124
摘要： A rotationally insensitive, retroreflective prismatic sheeting and method of manufacture is provided. The sheeting includes discrete clusters of cube corners that are separated from one another on all sides by a textured surface. Each of the cube corners in each cluster has a base edge that is not collinear or parallel with the base edges of cube corners on either side of it. The array of cube corners clusters is rulable, and the cube corners have different orientations. Four or more of the cube corners in each cluster may have edges that converge into a central point within the cluster, and the cube corners of the clusters may include at least two symmetrical pairs of cube corners. The shapes of the cube corner clusters may be polygonal, and all of the cube corners may share a common vertex located at the center of the polygonal shape.
摘要翻译：提供了一种旋转不敏感的回射棱镜片及其制造方法。片材包括立方体角的离散簇，它们通过纹理表面在所有侧面上彼此分开。每个群集中的每个立方角都有一个基本边不与其两边的立方角拐角的基本边线共线或平行。立方角集群的数组是统一的，立方角有不同的方向。每个簇中的四个或更多个立方角可以具有会聚到簇内的中心点的边缘，并且簇的立方角可以包括至少两个对称的立方角对。立体角集束的形状可以是多边形，并且所有立方角都可以共享位于多边形形状的中心处的公共顶点。

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