公开(公告)号：EP1466477A4

公开(公告)日：2006-10-25

申请号：EP03729301

申请日：2003-01-14

Applicant: NOKIA CORP

Inventor： LAINEMA JANI

IPC: G06K9/36 ,  G06T9/00 ,  H03M7/36 ,  H04N19/50 ,  H04N19/80 ,  H04N19/89

CPC classification number: H04N19/523 ,  H04N19/117 ,  H04N19/136 ,  H04N19/172 ,  H04N19/176 ,  H04N19/196 ,  H04N19/197 ,  H04N19/46 ,  H04N19/463 ,  H04N19/61 ,  H04N19/80 ,  H04N19/89

Abstract: A video coding system for coding a video sequence comprising a sequence of video frames each having an array of pixel values, wherein an interpolation filter is defined in order to reconstruct the pixel values in the decoding process. The system codes coefficients of an interpolation filter differentially with respect to a predefined base filter in order to provide a set of difference values. As the base filter coefficients are known to both encoder and decoder and can be statistically reasonably close to the actual filters used in the video sequence, the decoder can reconstruct the pixel values based on the set of difference values.

公开(公告)号：EP2522145A4

公开(公告)日：2014-08-06

申请号：EP11731722

申请日：2011-01-07

Applicant: NOKIA CORP

Inventor： LAINEMA JANI ,  UGUR KEMAL

IPC: H04N19/117 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86

CPC classification number: H04N19/00781 ,  H04N19/117 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86

Abstract: 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.

公开(公告)号：EP2371066A4

公开(公告)日：2014-06-04

申请号：EP09830057

申请日：2009-11-23

Applicant: NOKIA CORP

Inventor： HALLAPURO ANTTI ,  LAINEMA JANI ,  UGUR KEMAL

IPC: H03M7/46 ,  G06T9/00 ,  H03M7/30 ,  H03M7/48 ,  H04N19/00 ,  H04N19/13 ,  H04N19/14 ,  H04N19/61 ,  H04N19/91

CPC classification number: H03M7/6094 ,  H03M7/48 ,  H04N19/13 ,  H04N19/14 ,  H04N19/18 ,  H04N19/61

公开(公告)号：EP2522144A4

公开(公告)日：2014-03-19

申请号：EP11731721

申请日：2011-01-07

Applicant: NOKIA CORP

Inventor： LAINEMA JANI ,  UGUR KEMAL

IPC: H04N19/80 ,  H04N19/103 ,  H04N19/122 ,  H04N19/14 ,  H04N19/147 ,  H04N19/176 ,  H04N19/18 ,  H04N19/182 ,  H04N19/46 ,  H04N19/59 ,  H04N19/61 ,  H04N19/86

CPC classification number: H04N7/32 ,  H04N19/00 ,  H04N19/103 ,  H04N19/122 ,  H04N19/14 ,  H04N19/147 ,  H04N19/176 ,  H04N19/18 ,  H04N19/182 ,  H04N19/46 ,  H04N19/50 ,  H04N19/59 ,  H04N19/61 ,  H04N19/80 ,  H04N19/86

Abstract: An apparatus, a method and a computer program product for video coding are provided including selecting an encoding method from a set of encoding methods comprising at least a first encoding method and a second encoding method for encoding a block of pixels of an image; selecting at least one control point among the pixels of the block of pixels, wherein the control pixel is selected from any pixel of the block of pixels; and selecting a first reference point different from the control point; determining values of the other pixels of the selected block of pixels on the basis of the value of the control point and the value of the at least one reference point.

Abstract translation: 提供一种用于视频编码的装置，方法和计算机程序产品，包括从包括至少第一编码方法和第二编码方法的编码方法集合中选择编码方法，用于对图像的像素块进行编码; 在所述像素块的像素中选择至少一个控制点，其中所述控制像素从所述像素块的任何像素中选择; 以及选择与所述控制点不同的第一参考点; 基于所述控制点的值和所述至少一个参考点的值来确定所选择的像素块的其他像素的值。

公开(公告)号：EP2080379A4

公开(公告)日：2012-10-31

申请号：EP07849071

申请日：2007-10-15

Applicant: NOKIA CORP

Inventor： UGUR KEMAL ,  LAINEMA JANI ,  HANNUKSELA MISKA

IPC: H04N7/26 ,  H04N7/46 ,  H04N13/00

CPC classification number: 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

Abstract: 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.

公开(公告)号：HU229589B1

公开(公告)日：2014-02-28

申请号：HU0302617

申请日：2001-05-08

Applicant: NOKIA CORP

Inventor： LAINEMA JANI

IPC: H04N19/176 ,  G06T9/00 ,  H03M7/36 ,  H04N19/51

Abstract: A method for encoding video information is presented, where a piece of current video information is segmented into macroblocks and a certain number of available macroblock segmentations for segmenting a macroblock into blocks is defined. Furthermore, for each available macroblock segmentation at least one available prediction method is defined, each of which prediction methods produces prediction motion coefficients for blocks within said macroblock resulting in a certain finite number of available macroblock-segmentation-prediction-method pairs. For a macroblock, one of the available macroblock-segmentation-prediction-method pairs is selected, and thereafter the macroblock is segmented into blocks and prediction motion coefficients for the blocks within said macroblock are produced using the selected macroblock-segmentation-prediction-method pair. A corresponding decoding method, an encoder and a decoder are also presented.

公开(公告)号：CA2854495A1

公开(公告)日：2013-05-10

申请号：CA2854495

申请日：2012-11-02

Applicant: NOKIA CORP

Inventor： BICI MEHMET OGUZ ,  LAINEMA JANI ,  UGUR KEMAL

IPC: H04N19/593 ,  G06T9/00 ,  H04N19/14 ,  H04N19/176 ,  H04N19/52 ,  H04N19/94

Abstract: The invention relates to a method for encoding, a method for decoding, an apparatus, computer program products, an encoder and a decoder for video information. The motion vector for a block in a video image is predicted from a set of motion vector prediction candidates determined based on previously-coded motion vectors. A motion vector prediction candidate is included in the set based on the location of the block associated with the first spatial motion vector prediction candidate and in comparison with motion vector prediction candidates already in the set.

公开(公告)号：CA2745314A1

公开(公告)日：2010-06-10

申请号：CA2745314

申请日：2009-11-23

Applicant: NOKIA CORP

Inventor： HALLAPURO ANTTI ,  LAINEMA JANI ,  UGUR KEMAL

IPC: H03M7/46 ,  G06T9/00 ,  H03M7/48 ,  H04N7/26

Abstract: A system and method is provided for improving efficiency when entropy coding a block of quantized transform coefficients in video coding. Quantized coefficients are coded in two separate coding modes, namely, a run mode to a level mode coding mode. Rules for switching between these two modes are provided, and various embodiments are realized by 5 allowing an entropy coder to adaptively decide when to switch between the two coding modes based on context information, the rules and/or by explicitly signaling the position of switching (e.g., whether or not it should switch coding modes).

公开(公告)号：SG149694A1

公开(公告)日：2009-02-27

申请号：SG2006047971

申请日：2003-01-14

Applicant: NOKIA CORP

Inventor： LAINEMA JANI

IPC: G06K9/36 ,  G06T9/00 ,  H03M7/36 ,  H04N19/50 ,  H04N19/80 ,  H04N19/89 ,  H04N7/12

Abstract: CODING DYNAMIC FILTERS A video coding system for coding a video sequence comprising a sequence of video frames each having an array of pixel values, wherein an interpolation filter is defined in order to reconstruct the pixel values in the decoding process. The system codes coefficients of an interpolation filter differentially with respect to a predefined base filter in order to provide a set of difference values. As the base filter coefficients are known to both encoder and decoder and can be statistically reasonably close to the actual filters used in the video sequence, the decoder can reconstruct the pixel values based on the set of difference values.

公开(公告)号：CA2684110A1

公开(公告)日：2008-10-23

申请号：CA2684110

申请日：2008-04-09

Applicant: NOKIA CORP

Inventor： LAINEMA JANI

IPC: H04N7/50 ,  H04N19/89 ,  H04N19/593

Abstract: A system and method for improving prediction error coding performance of various video compression algorithms. Various embodiments combine the energy compaction features of transform coding with localization properties of spa tial coding. In various embodiments, the effects of pixel "outliers" are rem oved from the transform and are coded separately as a spatially coded pixel prediction, thereby improving the coding gain of the transform.