Patent application number | Description | Published |
20090041117 | Coding Scene Transitions in Video Coding - A method of generating a scene transition in a video sequence between a first and a second scene is provided. One of the scenes comprises independently decodable video frames coded according to a first frame format, and video frames coded according to a second frame format, one of the video frames according to the second frame format being predicted from one other video frame. The presentation time of one video frame of the first scene is determined to be equal to that of one scene transition video frame of the second scene during the scene transition. Scene transition information is determined for one video frame of one scene for generating a scene transition with a decoder. One scene transition video frame of the first scene, one scene transition video frame of the second scene, and the scene transition information are coded in the encoder into the video sequence. | 02-12-2009 |
20100215339 | Refined quality feedback in streaming services - A method for quality feedback in a streaming service is shown, wherein at least one media stream is streamed to a client for playback, the method comprising determining a quality feedback value according to at least one quality metric from a pre-defined set of quality metrics, wherein the pre-defined set of quality metrics contains a quality metric related to at least one of the playback of the at least one media stream and a corruption of one out of at least two types of frames contained in the at least one media stream, and reporting the quality feedback value to a server. A system, a client, a server, a computer program, a computer program product and a protocol for quality feedback are also shown. | 08-26-2010 |
20130117394 | METHOD FOR PRESENTING INFORMATION CONTAINED IN MESSAGES IN A MULTIMEDIA TERMINAL, A SYSTEM FOR TRANSMITTING MULTIMEDIA MESSAGES, AND A MULTIMEDIA TERMINAL - A method for presenting information contained in messages in a terminal (MS). In the method, the message includes at least one component. The message is transmitted to a terminal (MS) in a system for transmitting multimedia messages. In the method, a presentation model (SMIL) is formed to contain information related to the presentation of each component attached in the message. The aforementioned presentation model (SMIL) is supplemented with a reference about the location of each component in the message, and the aforementioned presentation model (SMIL) is attached to the aforementioned message. | 05-09-2013 |
20130226324 | AUDIO SCENE APPARATUSES AND METHODS - Apparatus comprising at least one processor and at least one memory including computer code, the at least one memory and the computer code configured to with the at least one processor cause the apparatus to at least perform: generating a message comprising a first part for determining a sensory space associated with the apparatus; determining a capture control parameter dependent on a sensory space apparatus distribution; and capturing a signal based on the capture control parameter. | 08-29-2013 |
20140105286 | ROBUST VIDEO CODING USING VIRTUAL FRAMES - A method of encoding video frames to produce encoded video frames. Each encoded video frame is represented by a bit-stream, the bit-stream representative of an encoded video frame including high and low priority information. At least some of the low priority information is decoded from a bit-stream depending on decoding of at least some of the high priority information from the bit-stream. The method includes encoding a first video frame to form a first encoded video frame, the first encoded video frame being represented by a first bit-stream including high and low priority information representative of the first video frame. A first complete reference frame is formed by decoding the high and low priority information from the first bit-stream. A first virtual reference frame is formed using the high priority information decoded from the first bit-stream. | 04-17-2014 |
20140136641 | METHOD FOR PRESENTING INFORMATION CONTAINED IN MESSAGES IN A MULTIMEDIA TERMINAL, A SYSTEM FOR TRANSMITTING MULTIMEDIA MESSAGES, AND A MULTIMEDIA TERMINAL - A method for presenting information contained in messages in a terminal (MS). In the method, the message includes at least one component. The message is transmitted to a terminal (MS) in a system for transmitting multimedia messages. In the method, a presentation model (SMIL) is formed to contain information related to the presentation of each component attached in the message. The aforementioned presentation model (SMIL) is supplemented with a reference about the location of each component in the message, and the aforementioned presentation model (SMIL) is attached to the aforementioned message. | 05-15-2014 |
Patent application number | Description | Published |
20130114742 | REFERENCE PICTURE HANDLING - A reference picture marking process and a reference picture list management process is handled in a unified reference picture marking and reference picture list management process. A new idle reference picture list may be used for handling reference pictures that are not used for reference in the current picture. Differential coding of picture order count may be used to increase coding efficiency. The reference picture management syntax structure may be sent in the picture parameter set for improved coding efficiency e.g. in regular GOP (group of pictures) arrangements. | 05-09-2013 |
20130188738 | METHOD FOR VIDEO CODING AND AN APPARATUS, A COMPUTER-PROGRAM PRODUCT, A SYSTEM, AND A MODULE FOR THE SAME - A method includes encoding information of at least two short-term reference picture sets into a bitstream; encoding into the bitstream a structure of pictures description with an indication being indicative of which one of the at least two short-term reference picture sets to be used for decoding by a picture in question within the structure of pictures, the structure of pictures including one or more consecutive pictures in decoding order; encoding pictures according to the structure of pictures description into the bitstream. | 07-25-2013 |
20130191550 | MEDIA STREAMING APPARATUS - An apparatus comprising at least one processor and at least one memory including computer program code the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to perform: determining at least a first signal and an associated second signal; storing the first signal in a first file; generating in the first file and associated with the first signal a reference pointer to a location; and storing at the location indicated by the reference pointer the second signal associated with the first signal. | 07-25-2013 |
20130194384 | METHOD AND APPARATUS FOR VIDEO CODING - There is provided a slice header prediction method and apparatuses for 3D video encoding and decoding. In some example embodiments the following features can be derived from the header prediction method. Any decoding order of texture and depth view components may be supported. Also flexible prediction of syntax elements from any slice header appearing earlier in decoding order within the same access unit is allowed. The prediction can be turned on or off on view component basis. The syntax elements of the slice header may be categorized in a few sets and the use of the prediction as well as the prediction source for each set can be individually controlled. By using some example embodiments of the method all syntax elements of the slice header may be predicted. | 08-01-2013 |
20130272372 | METHOD AND APPARATUS FOR VIDEO CODING - There is disclosed a method, apparatus and computer program product in which a first parameter set is received and an identifier of the first parameter set is obtained. A second parameter set is also received. The validity of the first parameter set is determined on the basis of at least one of the following:
| 10-17-2013 |
20130287093 | METHOD AND APPARATUS FOR VIDEO CODING - There is disclosed a method, apparatus and computer program product in which at least one view component of a first type and at least one view component of a second type are obtained. The order of the texture view component and the depth view component in an access unit is determined and at least one indication of the order is encoded. The coding of the view components is adapted on the basis of the order. There is also disclosed a method, apparatus and computer program product in which at least one encoded view component of a first type and at least one encoded view component of a second type are received. Also at least one encoded indication of the order of the view components is received. The at least one encoded indication is decoded and the decoding of the view components is adapted on the basis of the order. | 10-31-2013 |
20130342644 | APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING - There is disclosed a method, apparatus and computer program product in which a view synthesis prediction utilizes a depth map, disparity information or other ranging information of a co-located reference frame in another view. A first uncompressed texture block of a first texture picture representing a first view and ranging information associated with the first uncompressed texture block are obtained. Disparity information with reference to a second view is derived on the basis of the ranging information. Reference samples of the second view are obtained on the basis of the disparity information. A view synthesis prediction is performed by using the reference samples to obtain a reference block for encoding the first uncompressed texture block. | 12-26-2013 |
20130343459 | METHOD AND APPARATUS FOR VIDEO CODING - There is provided a method, apparatus and computer program product. In some embodiments an uncompressed picture is encoded into a coded picture comprising a slice; determining a list of prediction reference candidates for the slice in one or more temporal reference pictures; associating each prediction reference candidate in the list with a reference index; and examining if the prediction reference candidate associated with a first reference index is available for temporal motion vector prediction for the slice. If the prediction reference candidate with the first reference index is not available for temporal motion vector prediction for the slice, examining if the list comprises another prediction reference candidate associated with another reference index. If the list comprises another prediction reference candidate associated with another reference index, providing the reference index associated with the another prediction reference candidate in a syntax element at a slice level or at a higher level. | 12-26-2013 |
20140003504 | Apparatus, a Method and a Computer Program for Video Coding and Decoding | 01-02-2014 |
20140003505 | METHOD AND APPARATUS FOR VIDEO CODING | 01-02-2014 |
20140009574 | APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING - There is disclosed a method in which depth related information of a part of a picture is obtained and texture related information of the part of the picture is received. The depth related information is used to determine whether to use the depth related information in intra prediction of the texture related information of the part of the picture. There is also disclosed an apparatus and a computer program product to implement the method. | 01-09-2014 |
20140063188 | Apparatus, a Method and a Computer Program for Image Processing - There is provided methods, apparatuses and computer program products for image processing in which a pair of images may be downsampled to lower resolution pair of images and further to obtain a disparity image representing estimated disparity between at least a subset of pixels in the pair of images. A confidence of the disparity estimation may be obtained and inserted into a confidence map. The disparity image and the confidence map may be filtered jointly to obtain a filtered disparity image and a filtered confidence map by using a spatial neighborhood of the pixel location. An estimated disparity distribution of the pair of images may be obtained through the filtered disparity image and the confidence map. | 03-06-2014 |
20140085415 | METHOD AND APPARATUS FOR VIDEO CODING - There are disclosed various methods, apparatuses and computer program products for video encoding and decoding. In some embodiments the method for encoding comprises obtaining samples of a video signal for encoding a first layer representation of the video signal and a second layer representation of the video signal. An encoded first layer representation of the video signal is used as a prediction reference in the encoding of the second layer representation of the video signal. It is evaluated whether to use filtering in the encoding of the second layer representation. If the evaluation indicates to use filtering in the encoding of the second layer representation, the method further comprises filtering the encoded first layer representation; and using the filtered encoded first layer representation as the prediction reference in the encoding of the second layer representation of the video signal. | 03-27-2014 |
20140086327 | METHOD AND TECHNIQAL EQUIPMENT FOR SCALABLE VIDEO CODING - The invention relates to video coding, in particular to scalable video encoding/decoding. A method according to an embodiment comprises encoding motion information of an enhancement layer using motion vector information of a base layer, wherein the encoding comprises deriving the reference index of motion vector of the enhancement layer by using a mapping process depending on the used reference picture list of the base layer and the reference index of motion vector of the base layer, and determining corresponding pictures of the enhancement layer and the base layer by mapping the respective reference picture indexes to corresponding picture order values. The embodiments relate to decoding also. | 03-27-2014 |
20140092964 | Apparatus, a Method and a Computer Program for Video Coding and Decoding - There are disclosed various methods, apparatuses and computer program products for video encoding and decoding. In other embodiments, there is provided a method, an apparatus, a computer readable storage medium stored with code thereon for use by an apparatus, and a video encoder, for encoding a scalable bitstream, to provide indicating an encoding configuration, where only samples and syntax from intra coded pictures of base layer is used for coding the enhancement layer pictures. In other embodiments, there is provided an apparatus, a computer readable storage medium stored with code thereon for use by an apparatus, and a video decoder, for decoding a scalable bitstream, to receive indications of an encoding configuration, where only samples and syntax from intra coded pictures of base layer is used for coding the enhancement | 04-03-2014 |
20140092977 | Apparatus, a Method and a Computer Program for Video Coding and Decoding - In some embodiments, there is provided an apparatus, a computer readable storage medium stored with code thereon for use by an apparatus, and a video decoder, for decoding a video bitstream, to derive a motion compensated prediction for an enhancement layer block based on a motion compensation process on the co-located base layer block using the same or similar motion vector of enhancement layer blocks and base layer reference pictures. In other embodiments, there is provided a method, an apparatus, a computer readable storage medium stored with code thereon for use by an apparatus, and a video encoder, for encoding a video bitstream, to derive a motion compensated prediction for an enhancement layer block based on a motion compensation process on the co-located base layer block using the same or similar motion vector of enhancement layer blocks and base layer reference pictures. | 04-03-2014 |
20140098883 | METHOD AND APPARATUS FOR VIDEO CODING - There are disclosed various methods, apparatuses and computer program products for video encoding and decoding. In some embodiments information on a sampling grid of a current view component and information on a sampling grid of a reference view component is obtained and is used to select one or more resampling filter parameters for filtering at least a part of the reference view component to be used in one or more of inter-view prediction and view synthesis prediction of the current view component. In some embodiments the difference between the vertical sampling grid position of an interpolated reference view component and the vertical sampling grid position of the current view component is used to compensate a motion vector offset to be used in inter-view prediction of the current view component. | 04-10-2014 |
20140133567 | APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING - There is disclosed a method, apparatus and computer program product in which a set of valid motion vector values for encoding and decoding may depend on the reference picture used. A current block of a frame is selected for encoding, and a reference block for the current block is selected. On the basis of the selected reference block a reference type is determined. On the basis of the reference type and the reference block a motion vector for the current block is determined. Motion vector information is encoded and decoded on the basis of the determined motion vector. | 05-15-2014 |
20140168362 | METHOD AND APPARATUS FOR VIDEO CODING - There are disclosed various methods, apparatuses and computer program products for video encoding. In some embodiments the method for encoding comprises examining availability of a depth block co-located with a texture block, determining a prediction method for a texture block on the basis of availability of a co-located depth block; and deriving a first prediction block for the texture block on the basis of the availability of the co-located depth block. The method further comprises deriving a first prediction block for the texture block on the basis of the co-located depth block, if the co-located depth block is available, and otherwise deriving a second prediction block for the texture block without using the co-located depth block. There are also disclosed corresponding method for various methods, apparatuses and computer program products for video decoding | 06-19-2014 |
20140205021 | APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING - A method comprising encoding a bitstream comprising a base layer, a first enhancement layer and a second enhancement layer; encoding an indication of both the base layer and the first enhancement layer used for prediction for the second enhancement layer in the bitstream; encoding, in the bitstream, an indication of a first set of prediction types that is applicable from the base layer to the second enhancement layer, wherein the first set of prediction types is a subset of all prediction types available for prediction between layers, and encoding, in the bitstream, an indication of a second set of prediction types that is applicable from the base layer or the first enhancement layer to the second enhancement layer, wherein the second set of prediction types is a subset of all prediction types available for prediction between layers. | 07-24-2014 |
20140218473 | METHOD AND APPARATUS FOR VIDEO CODING AND DECODING - There are disclosed various methods, apparatuses and computer program products for video encoding and decoding. In some embodiments diagonal inter-layer prediction is enabled by providing an indication of a reference picture. In some embodiments the indication is provided as a combination of a temporal picture identifier and a layer identifier of the reference picture in another layer than the picture to be predicted. In an encoding method a first picture of a first layer representing a first time instant is encoded; a second picture representing a second time instant on a second layer is predicted by using the first picture as a reference picture; and | 08-07-2014 |
20140219346 | METHOD AND APPARATUS FOR VIDEO CODING AND DECODING - Various methods, apparatuses and computer program products for video encoding and decoding. In some embodiments a first picture having a first resolution on a first layer is encoded without inter-layer prediction; a second picture having a second resolution on a second layer is encoded without inter-layer prediction; a third picture having the second resolution on the second layer is encoded without inter-layer prediction and without temporally referencing to pictures prior to the second picture. Further, a corresponding indication is encoded. In some embodiments one or more indications are received to determine if a switching point, referring to a picture coded using inter-layer prediction, from the first layer to the second layer exists, and if so, pictures in the first layer prior to the switching point; pictures associated with the switching point; and pictures in the second layer after the switching point may be decoded. | 08-07-2014 |
20140254681 | APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING - There are disclosed various methods, apparatuses and computer program products for video coding. In some embodiments motion parameters are obtained for a block of first layer samples and a first layer reference picture for the block of first layer samples is identified. A second layer reference picture corresponding to the first layer reference picture is identified, intermediate reference picture samples are derived by using sample values of the first layer reference picture and information based on sample values of the second layer reference picture, and inter-layer reference picture samples are derived by using intermediate reference picture samples and first layer samples. In some embodiments motion compensated sample values are derived from the second layer reference picture on the basis of the motion parameters; and an inter-layer reference block is derived by using residual sample values of first layer samples and motion compensated sample values from the second layer reference picture. | 09-11-2014 |
20140301463 | METHOD AND APPARATUS FOR VIDEO CODING AND DECODING - There are disclosed various methods, apparatuses and computer program products for video encoding and decoding. In some embodiments of the method second motion information is decoded for a second block; two or more parameters of adjustment are determined for said second motion information in order to be used for decoding of a first block, said two or more parameters being selected among a spatial resolution scaling factor and/or offset, an inter-view scaling factor and/or offset, a disparity offset, a temporal scaling factor and/or offset, and/or zero or more other scaling factors and/or offsets. Said second motion information is adjusted/mapped with said two or more parameters; and said adjusted/mapped second motion information is utilized for decoding of the first block. | 10-09-2014 |
20140314147 | HARMONIZED INTER-VIEW AND VIEW SYNTHESIS PREDICTION FOR 3D VIDEO CODING - There are disclosed various methods, apparatuses and computer program products for video encoding. The type of prediction used for a reference picture index may be signaled in the video bit-stream. The omission of motion vectors from the video bit-stream for a certain image element may also be signaled; signaling may indicate to the decoder that motion vectors used in prediction are to be construed at the decoder. The construction of motion vectors may take place by using disparity information that has been obtained from depth information of the picture being used as a reference. | 10-23-2014 |
20140314148 | APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING - A method and related apparatus for decoding an image sequence from a bitstream, wherein an identifier indicating if all output pictures are decodable with a predefined set of reference pictures is decoded; an indication of required reference pictures for a given output picture is decoded; the indicated at least one reference picture for the given output picture is decoded; and the at least one output picture is decoded. | 10-23-2014 |
20150016531 | METHOD AND APPARATUS FOR VIDEO CODING - There are disclosed various methods, apparatuses and computer program products for video encoding and decoding. In some embodiments a method comprises at least one of the following: encoding into a bitstream an indication that motion fields are stored, but only for inter-layer motion prediction; encoding into a bitstream an indication on a limited scope of motion field usage; encoding into a bitstream an indication whether or not to use the motion field for prediction; encoding into a bitstream an indication of storage parameters for storing motion information. | 01-15-2015 |
20150078456 | METHOD AND APPARATUS FOR VIDEO CODING AND DECODING - The invention relates to concatenating or splicing of scalable video bitstreams. There are disclosed various methods, apparatuses and computer program products for video encoding and decoding and modifying coded video bitstreams. In some embodiments, indications are provided in the coded video bitstream to indicate a layer-wise decoding start-up process. These indications may be generated by encoders or splicers. | 03-19-2015 |