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41. 发明申请

US20090167951A1 HISTORY-BASED SPATIO-TEMPORAL NOISE REDUCTION 有权
标题翻译：基于历史的空间噪声减少
公开(公告)号：US20090167951A1
公开(公告)日：2009-07-02
申请号：US11967754
申请日：2007-12-31
申请人： Yi-Jen Chiu
发明人： Yi-Jen Chiu
IPC分类号： H04N5/00
CPC分类号： H04N5/21 , G06T5/002 , G06T2207/10016 , G06T2207/20012 , G06T2207/20182 , G06T2207/20192 , H04N5/144 , H04N19/117 , H04N19/86
摘要： Implementations of a history-based temporal motion noise filtering technique that considers the temporal smooth among multiple pictures as well as the block-based technique to estimate the noise/motion history to better reflect the spatial/temporal smoothness in the local neighborhood are provided. In particular, implementations of the per-pixel blending technique in the block-based noise measurement may be used to better manipulate pixels in both the spatial and temporal domains. A global noise detection technique may be used to estimate the occurrence and/or strength of the noise. A content adaptive spatial filtering content adaptive spatial filter based on a local edge measurement may be used to reduce picture noise as well as preserve edge sharpness. Implementations may be configured for various applications. In particular, programmability options allow users to specify the filter parameters for singularity detection, spatial-only, temporal-only and spatial-temporal filters to achieve user desirable viewing experience.
摘要翻译：提供了基于历史的时间运动噪声滤波技术的实现，其考虑多个图像之间的时间平滑以及基于块的技术来估计噪声/运动历史以更好地反映局部邻域中的空间/时间平滑度。特别地，基于块的噪声测量中的每像素混合技术的实现可以用于更好地操纵空间和时域的像素。可以使用全局噪声检测技术来估计噪声的发生和/或强度。可以使用基于局部边缘测量的内容自适应空间滤波内容自适应空间滤波器来降低图像噪声以及保持边缘清晰度。实现可以被配置用于各种应用。特别地，可编程选项允许用户指定用于奇异性检测的过滤器参数，仅空间，仅时间和空间 - 时间过滤器，以实现用户期望的观看体验。

42. 发明授权

US07548660B2 System and method of spatio-temporal edge-preserved filtering techniques to reduce ringing and mosquito noise of digital pictures 有权
标题翻译：时空边缘保留滤波技术的系统和方法，以减少数字图像的振铃和蚊子噪声
公开(公告)号：US07548660B2
公开(公告)日：2009-06-16
申请号：US11239965
申请日：2005-09-30
申请人： Yi-Jen Chiu
发明人： Yi-Jen Chiu
IPC分类号： G06K9/40
CPC分类号： H04N19/86 , H04N19/117 , H04N19/14 , H04N19/61
摘要： A method can include selecting a block of pixels. It may be determined whether the block of pixels contains an edge pixel. If the block of pixels contains an edge pixel, a first pixel may be selected among the block of pixels. If it is determined that the first pixel is a ringing noise pixel, a ringing filter may be applied. An edge-preserved filter may be applied if the first pixel is not a ringing noise pixel.
摘要翻译：一种方法可以包括选择一个像素块。可以确定像素块是否包含边缘像素。如果像素块包含边缘像素，则可以在像素块中选择第一像素。如果确定第一像素是振铃噪声像素，则可以施加振铃滤波器。如果第一像素不是振铃噪声像素，则可以应用边缘保留滤光器。

43. 发明申请

US20090097763A1 Converting video and image signal bit depths 有权
标题翻译：转换视频和图像信号位深度
公开(公告)号：US20090097763A1
公开(公告)日：2009-04-16
申请号：US11974688
申请日：2007-10-15
申请人： Yi-Jen Chiu
发明人： Yi-Jen Chiu
IPC分类号： G06K9/36
CPC分类号： H04N5/142 , H04N1/64 , H04N5/20 , H04N7/0135 , H04N7/125 , H04N19/105 , H04N19/14 , H04N19/184 , H04N19/593 , H04N19/85
摘要： A technique includes converting a first value for a pixel that is associated with a lower bit depth into a second value for the pixel, which is associated with a higher bit depth based at least in part on a neighborhood of the pixel.
摘要翻译：一种技术包括至少部分地基于像素的邻域将与较低位深度相关联的像素的第一值转换为像素的第二值，该第二值与较高位深度相关联。

44. 发明申请

US20080239153A1 NOISE DETECTION AND ESTIMATION TECHNIQUES FOR PICTURE ENHANCEMENT 有权
标题翻译：噪声检测和图像增强的估计技术
公开(公告)号：US20080239153A1
公开(公告)日：2008-10-02
申请号：US11693453
申请日：2007-03-29
申请人： Yi-Jen Chiu
发明人： Yi-Jen Chiu
IPC分类号： H04N5/00
CPC分类号： H04N17/00 , G06T5/002 , G06T5/20 , G06T7/13 , G06T2207/10016 , G06T2207/20008 , G06T2207/20032 , H04N5/142 , H04N5/21
摘要： A method of filtering noise from a picture may include determining a set of pixel noise metrics for a set of selected pixels in the picture, based solely on information from the set of selected pixels in the picture. The method may also designate as valid a subset of pixel noise metrics in the set of pixel noise metrics those associated pixels are not located at an edge or are not located in a complicated area of the picture. A set of block noise metrics may be calculated from the valid subset of pixel noise metrics, and a global noise metric for the picture may be ascertained from the set of block noise metrics. The picture may be filtered using the global noise metric to generate a filtered picture.
摘要翻译：一种滤除图像噪声的方法可以包括基于图像中所选择的像素集合中的信息确定图像中的一组选定像素的像素噪声度量集合。该方法还可以将像素噪声度量集合中的像素噪声度量的子集指定为相关像素不位于边缘处或者不位于图像的复杂区域中的子集。可以从像素噪声度量的有效子集计算一组块噪声度量，并且可以从块噪声度量的集合中确定图像的全局噪声度量。可以使用全局噪声度量来对图像进行滤波以产生滤波图像。

45. 发明申请

US20080101474A1 OPTIMIZING THE STORAGE AND REDUCING THE COMPUTATION OF REFERENCE PICTURE LIST PROCESSING IN VIDEO DECODING 审中-公开
标题翻译：优化存储并减少视频解码中参考图像列表处理的计算
公开(公告)号：US20080101474A1
公开(公告)日：2008-05-01
申请号：US11555522
申请日：2006-11-01
申请人： Yi-Jen Chiu , Mei-Chen Yeh
发明人： Yi-Jen Chiu , Mei-Chen Yeh
IPC分类号： H04N11/04 , H04N7/12
CPC分类号： H04N19/103 , H04N19/132 , H04N19/174 , H04N19/176 , H04N19/44 , H04N19/46 , H04N19/573 , H04N19/61 , H04N19/70
摘要： A method of decoding a slice of video data may include determining two slice reference lists that are associated with the slice of video data and finding a co-located picture that is associated with the slice of video data. The method may also include retrieving two co-located reference lists that are associated with the co-located picture. Two lowest lists for the slice of video data may be calculated by comparing pairs of the two slice reference lists and the two co-located reference lists.
摘要翻译：解码视频数据片段的方法可以包括确定与视频数据片段相关联的两个片段参考列表，并找到与视频数据片段相关联的同位置的片段。该方法还可以包括检索与共同定位的图片相关联的两个同位置的参考列表。可以通过比较两个切片参考列表和两个同位置参考列表的对来计算视频数据片段的两个最低列表。

46. 发明授权

US07043088B2 Adaptive variable length decoding method 有权
标题翻译：自适应可变长度解码方法
公开(公告)号：US07043088B2
公开(公告)日：2006-05-09
申请号：US10910027
申请日：2004-08-03
申请人： Yi-Jen Chiu , Rajesh Hingorani , Obed Duardo , Paul Albin Wilford
发明人： Yi-Jen Chiu , Rajesh Hingorani , Obed Duardo , Paul Albin Wilford
IPC分类号： G06K9/36
CPC分类号： H03M7/42 , H04N19/91
摘要： A method is disclosed for decoding multiple-coded symbols from a coded input symbol stream in a single clock cycle. The method constructs an original Huffman look-up table by extending the associated Huffman tree to decode multiple symbols in one clock cycle in a first embodiment and decodes multiple DCT coefficient symbols in an alternate embodiment. An advantage of the method is that the depth of the new Huffman tree is adjustable thereby making the method easily adaptable to various hardware architectures. A further advantage of the present invention is that the decoding process speed is significantly increased while the size of the lookup table is nominally increased.
摘要翻译：公开了一种用于在单个时钟周期中从编码输入符号流解码多重编码符号的方法。该方法通过在第一实施例中在一个时钟周期内扩展相关联的霍夫曼树来解码多个符号来构造原始霍夫曼查找表，并且在替代实施例中解码多个DCT系数符号。该方法的一个优点是新的霍夫曼树的深度是可调的，从而使该方法容易适应各种硬件架构。本发明的另一个优点是，在查询表的大小名义上增加时，解码处理速度显着增加。

47. 发明授权

US06771824B1 Adaptive variable length decoding method 有权
标题翻译：自适应可变长度解码方法
公开(公告)号：US06771824B1
公开(公告)日：2004-08-03
申请号：US09473809
申请日：1999-12-28
申请人： Yi-Jen Chiu , Rajesh Hingorani , Obed Duardo , Paul Albin Wilford
发明人： Yi-Jen Chiu , Rajesh Hingorani , Obed Duardo , Paul Albin Wilford
IPC分类号： G06K936
CPC分类号： H03M7/42 , H04N19/91
摘要： A method is disclosed for decoding multiple-coded symbols from a coded input symbol stream in a single clock cycle. The method constructs an original Huffman look-up table by extending the associated Huffman tree to decode multiple symbols in one clock cycle in a first embodiment and decodes multiple DCT coefficient symbols in an alternate embodiment. An advantage of the method is that the depth of the new Huffman tree is adjustable thereby making the method easily adaptable to various hardware architectures. A further advantage of the present invention is that the decoding process speed is significantly increased while the size of the look-up table is nominally increased.
摘要翻译：公开了一种用于在单个时钟周期中从编码输入符号流解码多重编码符号的方法。该方法通过在第一实施例中在一个时钟周期内扩展相关联的霍夫曼树来解码多个符号来构造原始霍夫曼查找表，并且在替代实施例中解码多个DCT系数符号。该方法的一个优点是新的霍夫曼树的深度是可调的，从而使该方法容易适应各种硬件架构。本发明的另一个优点是，在查询表的大小名义上增加时，解码处理速度显着增加。

48. 发明授权

US06233283B1 Layered video coding using perceptual coding criteria for error resilience in packet networks 失效
标题翻译：使用感知编码标准对分组网络中的错误恢复性进行分层视频编码
公开(公告)号：US06233283B1
公开(公告)日：2001-05-15
申请号：US09102811
申请日：1998-06-23
申请人： Yi-Jen Chiu , John Hartung , James Steven Pawlyk
发明人： Yi-Jen Chiu , John Hartung , James Steven Pawlyk
IPC分类号： H04N750
CPC分类号： H04N21/643 , H04N19/115 , H04N19/14 , H04N19/154 , H04N19/176 , H04N19/37 , H04N19/61 , H04N19/89
摘要： An encoder for coding multiple layers of video signal to provide for efficient use of bandwidth. The encoder produces an error signal based at least in part on criteria considered by a perceptual preprocessor which takes into account limitations inherent in human visual perception. If the error signal generated from a subject frame represents high priority data that would be visually perceptible by a viewer, as determined by the preprocessor, the error signal is coded onto a base layer and an error resilience layer of a coded signal for transmission. In the event that the error signal is determined to be of less priority, such as if it represents only slightly visually perceptible information, then the error signal is coded onto only a low priority layer of the coded signal.
摘要翻译：用于编码多层视频信号以提供带宽的有效使用的编码器。编码器至少部分地基于感知预处理器考虑的标准产生误差信号，其考虑到人类视觉感知中固有的限制。如果从主题帧产生的误差信号表示由预处理器确定的视听者可视觉的高优先级数据，则将误差信号编码到用于传输的编码信号的基本层和错误恢复层上。在错误信号被确定为较不优先的情况下，例如，如果它仅表示稍微视觉上可感知的信息，则误差信号被编码到编码信号的低优先级层上。

49. 发明授权

US5973626A Byte-based prefix encoding 失效
标题翻译：基于字节的前缀编码
公开(公告)号：US5973626A
公开(公告)日：1999-10-26
申请号：US42509
申请日：1998-03-17
申请人： Toby Berger , Yi-Jen Chiu , Mikio Kawahara
发明人： Toby Berger , Yi-Jen Chiu , Mikio Kawahara
IPC分类号： H03M7/42 , H03M7/40 , H03M7/00
CPC分类号： H03M7/42
摘要： Two software-only prefix encoding techniques employ encoding look-up tables to produce contributions to the encoded bit stream that are incremented in integral numbers of bytes to facilitate accelerated encoding rates at the expense of an acceptable trade-off in increased memory size requirements. The first technique, referred to as offset-based encoding, employs encoding tables which eliminate most of the bit-based operations that need to be performed by a prefix encoder without inordinately expanding memory requirements. In offset-based encoding, a Huffman table is employed which contains information for each number of bits by which the length of a Huffman word is offset from an integral number of bytes. The encoding method generates bytes of encoded data, even though the Huffman code has variable length code words for each symbol to be encoded. The second technique, referred to as byte-based encoding, employs a byte-based Huffman encoding table which operates even faster than the offset-based encoding scheme because it does not employ any bit-based operations at all; however, this is achieved at the expense of a considerable expansion in memory requirements.
摘要翻译：两个仅软件前缀编码技术采用编码查找表来产生对以字节为单位递增的编码比特流的贡献，以便以增加的存储器大小要求的可接受的折衷为代价来加速编码速率。称为基于偏移的编码的第一种技术使用编码表，其消除了需要由前缀编码器执行的大部分基于位的操作，而不会不断扩大存储器需求。在基于偏移的编码中，使用霍夫曼表，其包含每个比特数的信息，通过该信息，霍夫曼字的长度与整数字节偏移。编码方法生成编码数据的字节，即使霍夫曼代码对于要编码的每个符号具有可变长度代码字。被称为基于字节的编码的第二种技术采用基于字节的霍夫曼编码表，其基于偏移的编码方案运行甚至更快，因为它完全不采用任何基于位的操作; 然而，这是以大量的内存需求扩张为代价的。

50. 发明授权

US09509995B2 System and method for enhanced DMVD processing 有权
标题翻译：用于增强DMVD处理的系统和方法
公开(公告)号：US09509995B2
公开(公告)日：2016-11-29
申请号：US13996582
申请日：2010-12-21
申请人： Lidong Xu , Yi-Jen Chiu , Wenhao Zhang , Hong Jiang
发明人： Lidong Xu , Yi-Jen Chiu , Wenhao Zhang , Hong Jiang
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N19/51 , H04N19/513 , H04N19/44 , H04N19/436
CPC分类号： H04N19/513 , H04N19/436 , H04N19/44
摘要： To let decoder side motion vector derivation (DMVD) coded blocks be decoded in parallel, decoder side motion estimation (ME) dependency on spatially neighboring reconstructed pixels can be removed. Mirror ME and projective ME are only performed on two reference pictures, and the spatially neighboring reconstructed pixels will not be considered in the measurement metric of the decoder side ME. Also, at a video decoder, motion estimation for a target block in a current picture can be performed by calculating a motion vector for a spatially neighboring DMVD block, using the calculated motion vector to predict motion vectors of neighboring blocks of the DMVD block, and decoding the DMVD block and the target block in parallel. In addition, determining a best motion vector for a target block in a current picture can be performed by searching only candidate motion vectors in a search window, wherein candidate motion vectors are derived from a small range motion search around motion vectors of neighboring blocks.
摘要翻译：为了使解码器侧运动矢量导出（DMVD）编码块并行解码，可以去除对空间相邻的重建像素的解码器侧运动估计（ME）依赖性。镜像ME和投影ME仅在两个参考图像上执行，并且在解码器侧ME的测量度量中将不考虑空间相邻的重建像素。此外，在视频解码器中，可以使用所计算的运动矢量来计算当前图像中的目标块的运动估计，以通过计算空间相邻的DMVD块的运动矢量来预测DMVD块的相邻块的运动矢量，以及对DMVD块和目标块进行并行解码。此外，通过仅在搜索窗口中仅搜索候选运动矢量来执行确定当前图片中的目标块的最佳运动矢量，其中，从围绕相邻块的运动矢量的小范围运动搜索导出候选运动矢量。

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