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1. 发明申请

WO2008084378A2 ADAPTIVE INTERPOLATION FILTERS FOR VIDEO CODING 审中-公开
标题翻译：用于视频编码的自适应插值滤波器
公开(公告)号：WO2008084378A2
公开(公告)日：2008-07-17
申请号：PCT/IB2008000028
申请日：2008-01-08
申请人： NOKIA CORP , NOKIA INC , RUESANOVSKYY DMYTRO , UGUR KEMAL
发明人： RUESANOVSKYY DMYTRO , UGUR KEMAL
IPC分类号： H04N7/26
CPC分类号： H04N19/523 , H04N7/12 , H04N19/00739 , H04N19/105 , H04N19/117 , H04N19/136 , H04N19/172 , H04N19/182 , H04N19/42 , H04N19/436 , H04N19/63
摘要： In digital video image encoding and decoding, a filter type is selected based on symmetrical properties of the images and coefficient values of an interpolation filter are calculated based on the selected filter type. Coefficient values, filter tap-length and selected filter-type are provided in the encoded video data. Coefficient values are also calculated based on a prediction signal representative of the different between a video frame and a reference image. The prediction signal is calculated from the reference image based on a predefined base filter and motion estimation performed on the video frame. The predefined base filter has fixed coefficient values. Coefficient values are selected from interpolation of pixel values in a selected image segment in the video frame. Symmetry properties of images can be a vertical symmetry, a horizontal symmetry and a combination thereof, so that only a portion of the filter coefficients are coded.
摘要翻译：在数字视频图像编码和解码中，基于图像的对称属性选择滤波器类型，并且基于所选择的滤波器类型来计算内插滤波器的系数值。在编码的视频数据中提供系数值，滤波器抽头长度和选定的滤波器类型。也可以基于表示视频帧和参考图像之间的不同的预测信号来计算系数值。基于对视频帧执行的预定义的基本滤波器和运动估计，从参考图像计算预测信号。预定义的基本滤波器具有固定的系数值。系数值从视频帧中所选图像段中的像素值的内插中选择。图像的对称属性可以是垂直对称性，水平对称性及其组合，使得只有一部分滤波器系数被编码。

2. 发明申请

WO2008122956A3 HIGH ACCURACY MOTION VECTORS FOR VIDEO CODING WITH LOW ENCODER AND DECODER COMPLEXITY 审中-公开
标题翻译：用编码器和解码器复杂度低的视频编码的高精度运动矢量
公开(公告)号：WO2008122956A3
公开(公告)日：2008-12-24
申请号：PCT/IB2008051325
申请日：2008-04-08
申请人： NOKIA CORP , NOKIA INC , UGUR KEMAL , LAINEMA JANI
发明人： UGUR KEMAL , LAINEMA JANI
IPC分类号： H04N7/36
CPC分类号： H04N19/523 , H04N19/53 , H04N19/61
摘要： Two-stage interpolation can be provided for frame prediction samples with quarter- pixel and finer accuracy. All samples of quarter-pixel and finer accuracy can use either half or full/integer-pixels in a bi-linear interpolation to allow for the use of higher accuracy motion vectors, such as one-eighth-pixel accuracy motion vectors. The motion vectors can be restricted in a manner such that they are not allowed to point to every possible sub-pixel sample on a sub-pixel grid, but rather a subset of those sub-pixel samples. In addition, the same full/integer and half-pixel samples that can be used to obtain a quarter-pixel sample can also be used to obtain a one-eighth- pixel sample that the quarter-pixel sample is connected to. Hence, for every quarter- pixel sample, a motion vector could point to two additional positions/locations with one-eighth-pixel accuracy, where the two additional positions/locations can be calculated using the same half or integer-pixel samples which were used to obtain the quarter-pixel sample. Therefore, an arbitrary motion vector accuracy can be achieved without the need to perform additional interpolation stages or increase the complexity of a decoder configured to decode motion vector data.
摘要翻译：可以为四分之一像素和更精细的帧预测采样提供两级插值。四分之一像素和更精细的所有样本可以在双线性插值中使用半或全/整像素，以允许使用更高精度的运动矢量，例如八分之一像素精度的运动矢量。运动矢量可以以这样的方式被限制，使得它们不被允许指向子像素网格上的每个可能的子像素样本，而是指向那些子像素样本的子集。另外，也可以使用可用于获得四分之一像素样本的相同的完整/整数和半像素样本来获得四分之一像素样本所连接的八分之一像素样本。因此，对于每个四分之一像素样本，运动矢量可指向具有八分之一像素精度的两个额外位置/位置，其中可使用相同的半个或整数像素样本来计算两个额外位置/位置以获得四分之一像素样本。因此，可以实现任意的运动矢量精度，而不需要执行额外的内插级或增加被配置为解码运动矢量数据的解码器的复杂度。

3. 发明申请

WO2009044356A2 VIDEO CODING WITH PIXEL-ALIGNED DIRECTIONAL ADAPTIVE INTERPOLATION FILTERS 审中-公开
标题翻译：使用像素对准的方向自适应插值滤波器进行视频编码
公开(公告)号：WO2009044356A2
公开(公告)日：2009-04-09
申请号：PCT/IB2008054008
申请日：2008-10-02
申请人： NOKIA CORP , NOKIA INC , RUSANOVSKYY DMYTRO , UGUR KEMAL , LAINEMA JANI
发明人： RUSANOVSKYY DMYTRO , UGUR KEMAL , LAINEMA JANI
CPC分类号： H04N19/523 , H04N19/117 , H04N19/182 , H04N19/46 , H04N19/61 , H04N19/82
摘要： A system and method for implementing an adaptive interpolation filter structure that achieves high coding efficiency with significantly less complexity than more conventional systems. In various embodiments, a set-of integer pixels are defined that are used in the interpolation process to obtain each sub-pixel sample at different locations. Samples at each sub-pixel positions are generated with independent pixel-aligned one-dimensional (1D) adaptive interpolation filters. The filter coefficients are be transmitted to a decoder or stored into a bit stream. At the decoder end, the received filtered coefficients may be used in an interpolation process to create a motion-compensated prediction.
摘要翻译：一种用于实现自适应内插滤波器结构的系统和方法，其实现了比传统系统显着更小的复杂度的高编码效率。在各种实施例中，定义了一组整数像素，其用于内插处理以在不同位置获得每个子像素样本。每个子像素位置处的样本都是用独立的像素对齐一维（1D）自适应内插滤波器生成的。滤波器系数被发送到解码器或存储到比特流中。在解码器端，可以在插值过程中使用所接收的滤波系数以产生运动补偿预测。

4. 发明申请

WO2008047300A3 SYSTEM AND METHOD FOR USING PARALLELLY DECODABLE SLICES FOR MULTI-VIEW VIDEO CODING 审中-公开
标题翻译：用于多视图视频编码的并行解码器的系统和方法
公开(公告)号：WO2008047300A3
公开(公告)日：2008-07-03
申请号：PCT/IB2007054197
申请日：2007-10-15
申请人： NOKIA CORP , NOKIA INC , UGUR KEMAL , LAINEMA JANI , HANNUKSELA MISKA
发明人： UGUR KEMAL , LAINEMA JANI , HANNUKSELA MISKA
IPC分类号： H04N7/26 , H04N13/00
CPC分类号： H04N19/59 , H04N19/105 , H04N19/117 , H04N19/129 , H04N19/176 , H04N19/436 , H04N19/44 , H04N19/46 , H04N19/517 , H04N19/597 , H04N19/61 , H04N19/70 , H04N19/82 , H04N19/91
摘要： A system and method for enabling parallel decoder implementation for different views, even when there are existing dependencies between views. In various embodiments of the present invention, information is signaled to a decoder that slices are coded using certain constraints, so that parallel decoding of slices is possible. This signaling can be performed at a sequence parameter set level, or it could be performed at picture parameter set level, slice header level or macroblock header level. Additionally, the delay between various views is also signaled to the decoder, at the same location as the constraint information in various embodiments. Various algorithms can also be used to improve the coding efficiency of the system.
摘要翻译：即使当视图之间存在依赖关系时，也可以为不同的视图实现并行解码器的系统和方法。在本发明的各种实施例中，向解码器发信号通知使用特定约束来对切片进行编码的信息，从而切片的并行解码是可能的。该信令可以在序列参数设置级别执行，或者可以在图像参数设置级别，片头级别或宏块头级别执行。此外，各种视图之间的延迟也在与各种实施例中的约束信息相同的位置处被通知给解码器。也可以使用各种算法来提高系统的编码效率。

5. 发明申请

WO2008152573A3 JOINT CODING OF MULTIPLE TRANSFORM BLOCKS WITH REDUCED NUMBER OF COEFFICIENTS 审中-公开
标题翻译：具有减少系数的多个变换块的联合编码
公开(公告)号：WO2008152573A3
公开(公告)日：2010-08-26
申请号：PCT/IB2008052277
申请日：2008-06-10
申请人： NOKIA CORP , NOKIA INC , ZHANG CIXUN , UGUR KEMAL , LAINEMA JANI , HALLAPURO ANTTI OLLI
发明人： ZHANG CIXUN , UGUR KEMAL , LAINEMA JANI , HALLAPURO ANTTI OLLI
IPC分类号： H04N7/26
CPC分类号： H04N19/625 , H04N19/129 , H04N19/132 , H04N19/593 , H04N19/65
摘要： A system and method for video/image encoding and decoding, where transform coefficients associated with a plurality of blocks are reorganized and coded together. Various embodiments perform transform and quantization and generate transform coefficients, where the coefficients of the transform blocks are reorganized and interleaved. Additionally, an encoding process involves coding only a subset of the transform coefficients belonging to the transform blocks resulting in one or more transform blocks less than the original number of transform blocks, and putting this into a bitstream. A decoding process involves decoding the one or more resulting transform blocks including the subset of transform coefficients from the bistream, the transform coefficients being put in an array and decoded. The decoder de-interleaves the decoded transform coefficients and any remaining coefficients of the one or more transform blocks are filled in according to a plurality of different methods. After the one or more transform blocks are fully decoded, inverse transform and inverse quantization are performed and residual data is generated.
摘要翻译：一种用于视频/图像编码和解码的系统和方法，其中与多个块相关联的变换系数被重组和编码在一起。各种实施例执行变换和量化并生成变换系数，其中变换块的系数被重组和交织。此外，编码处理涉及仅编码属于变换块的变换系数的子集，导致小于原始数量的变换块的一个或多个变换块，并将其放入比特流中。解码过程涉及对来自双向头的变换系数子集的一个或多个所得到的变换块进行解码，将变换系数置于阵列中并进行解码。解码器解交织解码的变换系数，并且根据多种不同的方法填充一个或多个变换块的任何剩余系数。在一个或多个变换块完全解码之后，执行逆变换和逆量化，并产生残差数据。

6. 发明申请

WO2008038238A2 ADAPTIVE INTERPOLATION FILTERS FOR VIDEO CODING 审中-公开
标题翻译：用于视频编码的自适应插值滤波器
公开(公告)号：WO2008038238A2
公开(公告)日：2008-04-03
申请号：PCT/IB2007053913
申请日：2007-09-26
申请人： NOKIA CORP , NOKIA INC , UGUR KEMAL , LAINEMA JANI
发明人： UGUR KEMAL , LAINEMA JANI
IPC分类号： H04N7/26
CPC分类号： H04N19/523 , H04N19/117 , H04N19/139 , H04N19/172 , H04N19/176 , H04N19/196 , H04N19/51 , H04N19/61 , H04N19/80
摘要： In encoding or decoding a video sequence having a sequence of video frames, interpolation filter coefficients for each frame or macroblock are adapted so that the non- stationary properties of the video signal are captured more accurately. A filter-type selection block in the encoder is used to determine the filter-type for use in the adaptive interpolation filter (AIF) scheme by analyzing the input video signal. Filter-type information is transmitted along with filter coefficients to the decoder. This information specifies, from a pre-defined set of filter types, what kind of interpolation filter is used. The number of filter coefficients that is sent depends on the filter-type. This number is pre-defined for each filter-type. Based on the filter-type and the filter coefficients, a filter constructing block in the decoder constructs the interpolation filter.
摘要翻译：在对具有视频帧序列的视频序列进行编码或解码时，对每个帧或宏块的内插滤波器系数进行调整，以便更精确地捕获视频信号的非平稳性质。编码器中的滤波器类型选择块用于通过分析输入视频信号来确定自适应内插滤波器（AIF）方案中使用的滤波器类型。滤波器类型信息与滤波器系数一起被传输到解码器。该信息从预先定义的一组滤波器类型中指定使用哪种插值滤波器。发送的滤波器系数的数量取决于滤波器类型。这个数字是为每个过滤器类型预先定义的。基于滤波器类型和滤波器系数，解码器中的滤波器构造块构建内插滤波器。

7. 发明申请

WO2009050557A2 FIXED-POINT IMPLEMENTATION OF AN ADAPTIVE IMAGE FILTER WITH HIGH CODING EFFICIENCY 审中-公开
标题翻译：具有高编码效率的自适应图像滤波器的固定点实现
公开(公告)号：WO2009050557A2
公开(公告)日：2009-04-23
申请号：PCT/IB2008002709
申请日：2008-10-13
申请人： NOKIA CORP , UGUR KEMAL , HALLAPURO ANTTI OLLI , RUSANOVSKYY DMYTRO , LAINEMA JANI
发明人： UGUR KEMAL , HALLAPURO ANTTI OLLI , RUSANOVSKYY DMYTRO , LAINEMA JANI
CPC分类号： H04N19/42 , H04N19/82
摘要： In accordance with an embodiment of the present invention, a method comprising: representing coefficients of an adaptive image filter in binary words wherein the coefficients are restricted and the binary words have a maximum number of bits defined at least in part by a precision index; computing at least one of a convolution sum and multiple partial convolution sums of the adaptive image filter wherein the at least one of a convolution sum and multiple partial convolution sums having a constrained value range and having a binary representation with a fixed maximum number of bits; and generating the output of the adaptive image filter based at least in part on the at least one of a convolution sum and multiple partial convolution sums, is disclosed.
摘要翻译：根据本发明的实施例，一种方法包括：以二进制字表示自适应图像滤波器的系数，其中系数被限制，并且二进制字具有至少部分地由精度指数定义的最大位数; 计算自适应图像滤波器的卷积和和多个部分卷积和中的至少一个，其中卷积和和具有约束值范围并具有固定最大位数的二进制表示的部分卷积和之间的至少一个; 并且至少部分地基于卷积和和多个部分卷积和中的至少一个来生成自适应图像滤波器的输出。

8. 发明申请

WO2013093187A3 AN AUDIO LENS 审中-公开
标题翻译：一个音频镜头
公开(公告)号：WO2013093187A3
公开(公告)日：2013-08-15
申请号：PCT/FI2012051237
申请日：2012-12-13
申请人： NOKIA CORP
发明人： LAAKSONEN LASSE JUHANI , UGUR KEMAL , PATWARDHAN PUSHKAR PRASAD , VASILACHE ADRIANA , HAGQVIST JARI MATHIAS
IPC分类号： H04S7/00 , G10L21/10 , H04N5/77
CPC分类号： H04R3/005 , G10L2021/02166 , H04N13/0246 , H04R1/406 , H04R2430/25 , H04R2460/07 , H04S7/30 , H04S7/40 , H04S2400/15 , H04S2420/07
摘要： An apparatus configured to: determine a viewing angle associated with at least one apparatus camera; determine from at least two audio signals at least one audio source orientation relative to an apparatus; and generate at least one spatial filter including at least a first orientation range associated with the viewing angle and a second orientation range relative to the apparatus.
摘要翻译：一种装置，被配置为：确定与至少一个装置相机相关联的视角; 从至少两个音频信号确定相对于装置的至少一个音频源方向; 并且生成至少一个空间滤波器，该空间滤波器包括与该视角相关的至少第一定向范围和相对于该装置的第二定向范围。

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