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公开(公告)号：AU2008231532A1
公开(公告)日：2008-10-02
申请号：AU2008231532
申请日：2008-03-25
Applicant: NOKIA CORP
Inventor： LAINEMA JANI
IPC: H04N7/26
Abstract: A video coding system is capable of encoding and/or decoding a video frame based on at least two different types of motion vector predictions. In one type, the motion vector predictor of a current block in the video frame is calculated using only the motion vector of a neighboring block which is directly above the current block. In another type, the motion vector predictor is calculated using the motion vector of a neighboring block which is located on the left side of the current block. In the former type, adjacent blocks located in the same row can be decoded independently of each other. In the latter type, adjacent blocks located in the same column can be decoded independently. The system may also be capable of conventional coding. An indication is used for indicating to the decoder side which type of motion vector predictor is used in the encoding.
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公开(公告)号：DE60015566T2
公开(公告)日：2005-10-27
申请号：DE60015566
申请日：2000-08-10
Applicant: NOKIA CORP
Inventor： KARCZEWICZ MARTA , LAINEMA JANI , DOBRIN BOGDAN-PAUL
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公开(公告)号：HU0500030A2
公开(公告)日：2005-07-28
申请号：HU0500030
申请日：2003-01-14
Applicant: NOKIA CORP
Inventor： LAINEMA JANI
Abstract: A video coding system for coding a sequence of video frames each having an array of pixel values is provided. The system includes an interpolation filter to reconstruct sub-pixel values for use in the inter-frame prediction process. The coefficients of an interpolation filter are obtained 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 they are statistically close to the actual filters used in the video sequence, the decoder can reconstruct the pixel values based on the set of difference values.
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公开(公告)号：AU2003246987A1
公开(公告)日：2004-01-23
申请号：AU2003246987
申请日：2003-07-09
Applicant: NOKIA CORP
Inventor： HALLAPURO ANTTI , LAINEMA JANI , KARCZEWICZ MARTA
Abstract: A method and system for coding a video sequence based on motion compensated prediction, wherein an interpolation filter is used to generate predicted pixel values for picture blocks in the video sequence. The interpolation filter for use in conjunction with a multi-picture type is shorter or having fewer coefficients than the interpolation filter for use in conjunction with a single-picture type. As such, the complexity of the interpolation filter for the multi-picture type can be reduced. Furthermore, the interpolation filter may be changed based on the characteristics of the block, the size and/or the shape of the block.
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公开(公告)号：HU0302895A2
公开(公告)日：2003-12-29
申请号：HU0302895
申请日：2000-08-11
Applicant: NOKIA CORP
Inventor： LAINEMA JANI
IPC: H03M7/36 , H04N19/147 , H04N19/19 , H04N19/51 , H04N7/26
Abstract: A method of coding video frames in a telecommunication system, comprising: forming a video frame of consecutive stationary frames, storing the frame reconstruction data of at least one frame as a reference frame and the motion data of earlier coded neighbouring blocks, defining by means of the motion data of one or more earlier coded neighbouring blocks the motion data of the block to be coded, which neighbouring block is formed by means of the stored reference frame, defining the frame reconstruction data and motion data representing the block to be coded, which provide a pre-defined coding efficiency with a predefined picture quality.
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Patent Agency Ranking
公开(公告)号：AU2003201069A1
公开(公告)日：2003-07-24
申请号：AU2003201069
申请日：2003-01-14
Applicant: NOKIA CORP
Inventor： LAINEMA JANI
Abstract: A video coding system for coding a sequence of video frames each having an array of pixel values is provided. The system includes an interpolation filter to reconstruct sub-pixel values for use in the inter-frame prediction process. The coefficients of an interpolation filter are obtained 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 they are statistically close to the actual filters used in the video sequence, the decoder can reconstruct the pixel values based on the set of difference values.
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公开(公告)号：AT241887T
公开(公告)日：2003-06-15
申请号：AT00955421
申请日：2000-08-10
Applicant: NOKIA CORP
Inventor： KARCZEWICZ MARTA , LAINEMA JANI
Abstract: A method for motion compensated encoding of video data. The method comprises the steps of: generating a motion vector field of video pixels of a current frame to be coded based on a reference frame; obtaining segmenting information defining the division of the current frame into image segments; coding the motion vector field of an image segment S k to provide compressed motion information comprising a motion coefficient vector c k comprising a set of motion coefficients c i , such that c i .f i (x,y) represents the motion vector field, whereby f i (x,y) defines a certain set of basis functions, wherein i is an index defining a correspondence between each basis function and a corresponding motion coefficient; predicting a motion vector field of a subsequent image segment S L with a set of predicted motion coefficients p i based upon the previously generated motion coefficient vector c k ; generating for the subsequent segment S L a set of refinement motion coefficients r i corresponding to the difference between the set of motion coefficients c i and a set of predicted motion coefficients p i such that p i +r i =c i . Another aspects of the invention comprise corresponding video codec, mobile station, telecommunications network and computer program product.
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公开(公告)号：CA2419988A1
公开(公告)日：2002-02-21
申请号：CA2419988
申请日：2000-08-11
Applicant: NOKIA CORP
Inventor： LAINEMA JANI
Abstract: A method of coding video frames in a telecommunication system, comprising: forming a video frame of consecutive stationary frames, storing the frame reconstruction data of at least one frame as a reference frame and the motio n data of earlier coded neighbouring blocks, defining by means of the motion data of one or more earlier coded neighbouring blocks the motion data of the block to be coded, which neighbouring block is formed by means of the stored reference frame, defining the frame reconstruction data and motion data representing the block to be coded, which provide a pre-defined coding efficiency with a predefined picture quality.
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公开(公告)号：CA2854495C
公开(公告)日：2018-04-24
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.
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公开(公告)号：IN4092CHN2014A
公开(公告)日：2015-07-10
申请号：IN4092CHN2014
申请日：2014-06-02
Applicant: NOKIA CORP
Inventor： BICI MEHMET OGUZ , LAINEMA JANI , UGUR KEMAL
IPC: H04N19/593 , 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.
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