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1. 发明申请

US20090097547A1 Fixed-Point Implementation of an Adaptive Image Filter with High Coding Efficiency 失效
公开(公告)号：US20090097547A1
公开(公告)日：2009-04-16
申请号：US12250236
申请日：2008-10-13
申请人： Kemal Ugur , Antti Olli Hallapuro , Dmytro Rusanovskyy , Jani Lainema
发明人： Kemal Ugur , Antti Olli Hallapuro , Dmytro Rusanovskyy , Jani Lainema
IPC分类号： H04N7/12
CPC分类号： H04N19/82 , H04N19/107 , H04N19/117 , H04N19/176 , H04N19/42 , H04N19/61
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.

2. 发明授权

US08509316B2 Adaptive interpolation filters for video coding 有权
标题翻译：用于视频编码的自适应插值滤波器
公开(公告)号：US08509316B2
公开(公告)日：2013-08-13
申请号：US12008254
申请日：2008-01-08
申请人： Dmytro Rusanovskyy , Kemal Ugur
发明人： Dmytro Rusanovskyy , Kemal Ugur
IPC分类号： H04N11/02
CPC分类号： H04N19/523 , H04N7/12 , 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。

3. 发明授权

US08416861B2 Fixed-point implementation of an adaptive image filter with high coding efficiency 失效
标题翻译：具有高编码效率的自适应图像滤波器的定点实现
公开(公告)号：US08416861B2
公开(公告)日：2013-04-09
申请号：US12250236
申请日：2008-10-13
申请人： Kemal Ugur , Antti Olli Hallapuro , Dmytro Rusanovskyy , Jani Lainema
发明人： Kemal Ugur , Antti Olli Hallapuro , Dmytro Rusanovskyy , Jani Lainema
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： H04N19/82 , H04N19/107 , H04N19/117 , H04N19/176 , H04N19/42 , H04N19/61
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。

4. 发明申请

US20100296587A1 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：US20100296587A1
公开(公告)日：2010-11-25
申请号：US12681779
申请日：2008-10-02
申请人： Dmytro Rusanovskyy , Kemal Ugur , Jani Lainema
发明人： Dmytro Rusanovskyy , Kemal Ugur , Jani Lainema
IPC分类号： H04N7/26
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。

5. 发明申请

US20100246692A1 FLEXIBLE INTERPOLATION FILTER STRUCTURES FOR VIDEO CODING 审中-公开
标题翻译：用于视频编码的柔性插值滤波器结构
公开(公告)号：US20100246692A1
公开(公告)日：2010-09-30
申请号：US12630731
申请日：2009-12-03
申请人： Dmytro Rusanovskyy , Kemal Ugur , Antti Olli Hallapuro , Jani Lainema
发明人： Dmytro Rusanovskyy , Kemal Ugur , Antti Olli Hallapuro , Jani Lainema
IPC分类号： H04N7/26
CPC分类号： H04N19/523 , H04N19/117 , H04N19/46
摘要： Systems and methods of signaling different filter structures for each pixel or sub-pixel position in motion compensation prediction video coding are provided. An encoder signals to a decoder one filter structure among a plurality of pre-defined candidates that is used for a respective pixel or sub-pixel position. In accordance with one embodiment, filter structures signaled to the decoder from the encoder “switch” between directional filter and radial filter structures during interpolation at the sub-pixel level. In accordance with another embodiment, filter structures that are signaled may switch between a directional filter structure and a separable filter structure at the sub-pixel level. Thus, not only can an encoder switch between different filter structures during interpolation, but a filter structure pair is provided that the encoder can utilize to interpolate a wide range of signals without increasing tap-length.
摘要翻译：提供了用于在运动补偿预测视频编码中为每个像素或子像素位置发送不同滤波器结构的系统和方法。编码器向用于各个像素或子像素位置的多个预定义候选中的一个滤波器结构向解码器发信号。根据一个实施例，滤波器结构在子像素级的内插期间从编码器向方向滤波器和径向滤波器结构之间的信号转换到解码器。根据另一个实施例，被发信号的滤波器结构可以在子像素级处在方向滤波器结构和可分离滤波器结构之间切换。因此，编码器不仅可以在插值期间在不同的滤波器结构之间切换，而且提供了一种滤波器结构对，编码器可以利用它来内插宽范围的信号而不增加分接头长度。

6. 发明申请

US20090097545A1 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定点实现
公开(公告)号：US20090097545A1
公开(公告)日：2009-04-16
申请号：US11872024
申请日：2007-10-14
申请人： Kemal Ugur , Antti Olli Hallapuro , Dmytro Rusanovskyy , Jani Lainema
发明人： Kemal Ugur , Antti Olli Hallapuro , Dmytro Rusanovskyy , Jani Lainema
IPC分类号： H04N7/26 , G06K9/00
CPC分类号： H04N19/523 , H04N19/117 , H04N19/136 , H04N19/176 , H04N19/42 , H04N19/61 , 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。

7. 发明申请

US20080247467A1 Adaptive interpolation filters for video coding 有权
标题翻译：用于视频编码的自适应插值滤波器
公开(公告)号：US20080247467A1
公开(公告)日：2008-10-09
申请号：US12008254
申请日：2008-01-08
申请人： Dmytro Rusanovskyy , Kemal Ugur
发明人： Dmytro Rusanovskyy , Kemal Ugur
IPC分类号： H04N11/02
CPC分类号： H04N19/523 , H04N7/12 , 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。

8. 发明授权

US08275041B2 High accuracy motion vectors for video coding with low encoder and decoder complexity 有权
标题翻译：具有低编码和解码复杂度的视频编码的高精度运动矢量
公开(公告)号：US08275041B2
公开(公告)日：2012-09-25
申请号：US12099731
申请日：2008-04-08
申请人： Kemal Ugur , Jani Lainema
发明人： Kemal Ugur , Jani Lainema
IPC分类号： H04N7/12
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确的帧预测样本提供两级插值。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像素或全像素/整数像素，以允许使用较高精度的运动矢量，例如八分之一像素精度的运动矢量。可以以不允许它们指向子像素网格上的每个可能的子像素样本，而是这些子像素样本的子集的方式来限制运动矢量。此外，可以使用可用于获得四分之一像素样本的相同的全/整数和半像素样本来获得四分之一像素样本连接到的八分之一像素样本。因此，对于每个四分之一像素的样本，运动矢量可以指向具有八分之一像素精度的两个附加位置/位置，其中可以使用使用相同的半像素或整数像素样本来计算两个附加位置/位置以获得四分之一像素的样本。因此，可以实现任意运动矢量精度，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性。

9. 发明申请

US20110170609A1 Apparatus, a method and a computer program for video processing 有权
标题翻译：用于视频处理的装置，方法和计算机程序
公开(公告)号：US20110170609A1
公开(公告)日：2011-07-14
申请号：US12986896
申请日：2011-01-07
申请人： Jani Lainema , Kemal Ugur
发明人： Jani Lainema , Kemal Ugur
IPC分类号： H04N7/26
CPC分类号： H04N19/00781 , H04N19/117 , H04N19/14 , H04N19/159 , H04N19/176 , H04N19/61 , H04N19/82 , H04N19/86
摘要： There is disclosed apparatuses, methods and computer program products for coding and decoding and specifically but not only for coding and decoding of image and video signals. It is determined whether two adjacent blocks of pixels of an image have a flat nature. The result of the determining is used to select a filter among at least a first filter and a second filter for filtering a block boundary between two adjacent blocks of pixels. The second filter is selected when said determining indicates that there are two adjacent blocks of pixels having a flat nature. At least a first reference value and a second reference value are selected for the second filter and used in filtering the block boundary.
摘要翻译：公开了用于编码和解码的装置，方法和计算机程序产品，具体而不仅仅是对图像和视频信号的编码和解码。确定图像的两个相邻像素块是否具有平坦的性质。确定的结果用于在至少第一滤波器和第二滤波器之间选择滤波器，以对两个相邻像素块之间的块边界进行滤波。当所述确定指示存在具有平坦性质的两个相邻像素块时，选择第二滤波器。为第二滤波器选择至少第一参考值和第二参考值，并用于滤波块边界。

10. 发明申请

US20080075165A1 Adaptive interpolation filters for video coding 审中-公开
标题翻译：视频编码的自适应插值滤波器
公开(公告)号：US20080075165A1
公开(公告)日：2008-03-27
申请号：US11904315
申请日：2007-09-25
申请人： Kemal Ugur , Jani Lainema
发明人： Kemal Ugur , Jani Lainema
IPC分类号： H04N11/02
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，针对每个帧或宏块的内插滤波器系数进行调整，使得更准确地捕获视频信号的非平稳属性。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在自适应内插滤波器（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传送到解码器。该信息从预定义的一组过滤器类型指定使用什么样的内插滤波器。发送的滤波器系数的数量取决于滤波器类型。此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成内插滤波器

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