Patent application number | Description | Published |
20080199087 | Scalable Method For Encoding a Series of Original Images, and Associated Image Encoding Method, Encoding Device and Decoding Device - A series of decoded images is generated from a series of original images encoded by a first encoding technique following movement-compensated, predictive encoding, where a starting image of a group of successive original images that are to be encoded is defined by a second encoding technique following movement-compensated, temporally filtered partial band encoding based on a determined encoding property of a decoded image of the group of images that are to be encoded, the decoded image is used for generating an output image having a low resolution level, before the images are encoded. At least one output image is generated on each level of resolution from the successive original images of the group of from at least one decoded image during image encoding. The decoded images are provided only with a reduced quality while the reconstituted images are of great quality. | 08-21-2008 |
20080214176 | Methods and Devices for the Transmission of Scalable Data - ANS method for transmitting data, in which basic data is transmitted while one or several packets are transmitted with data that complements the basic data and increases the quality of the basic data when being decoded by a receiver. The packets contain at least one field with information about how the complementing data of the respective packet increases the quality of the basic data. The field can be read independently of the complementing data of the respective packet. Based on the information, a decision can be made as to whether the packets are to be forwarded or decoded. | 09-04-2008 |
20080292002 | Coding and Decoding Method and Device - In a method for the video coding of image sequences images in the image sequence are coded in a scaled manner, in such a way that the video data produced contains information which permits the images to be represented in a plurality of differing stages of image resolution, the latter being defined by the number of pixels per image representation. The coding is block-based, in such a way that to describe a displacement of parts of one of the images, said displacement being contained in the image sequence, at least one block structure that describes the displacement is created. Said block structure is configured from one block, which is subdivided into sub-blocks, whereby some of the sub-blocks are further subdivided into successively smaller sub-blocks. A first block structure is temporarily created for at least one first resolution stage and a second block structure is created for a second resolution stage, the first resolution stage having a lower number of pixels than the second resolution stage. In addition, the second block structure is compared with the first block structure to determine the differences in structure, in order to create a modified second block structure on the basis of characteristics of the structural differences, said modified block structure representing part of the second block structure and forming the basis for the coding of the image sequence. | 11-27-2008 |
20090119314 | Method for Storing Individual Data Elements of a Scalable Bit Stream in File, and Associated Device - Data elements of a scalable data flow are individually stored in at least one file with quality levels of the scalable data flow described by at least one scaling feature in respective scaling levels and at least one data element is associated with every scaling level of the scaling features. A processing index is allocated to each data element so that only data element(s) having a value lower than that processing index must be taken into consideration for processing. At least one descriptive list, containing descriptive elements associated with the data element, namely the scaling level of the respective scaling features, the time index and/or the processing index, is stored in one of the files. | 05-07-2009 |
20090174815 | Method for Synchronizing Content-Dependent Data Segments of Files - In one embodiment of the present invention, the synchronisation of data segments is particularly necessary for the use of small screens. A method and a device are disclosed for synchronising content-dependent first data segments of a first data file and content-dependent second data segments of a second data file, the first and second data segments being respectively output in sequence according to their chronological order in such a way that based on a predeterminable assignment rule for the first and second data segments, each second data segment is output together with a corresponding first data segment. | 07-09-2009 |
20090271838 | METHOD FOR TRANSMITTING SCENE DATA IN A UNIDIRECTIONAL DATA BROADCAST SYSTEM - A plurality of scene data describing at least one scene are transmitted by a data carousel from a transmitter to at least one receiver of a unidirectional broadcast system. The data carousel is used to transmit an index file to the receiver, a temporal arrangement of the scene data file being encoded in terms of data systems in the index file, to graphically represent and/or decode the scene. | 10-29-2009 |
20090307243 | Coding Positions of Data Elements In A Data Structure - The present invention relates to a method for coding positions of data elements in a data structure. According to the method, position codes are associated with the data elements in a pre-determined sequence, the position codes being selected in such a way that, if the lengths of the position codes are unlimited, many other position codes can be arbitrarily allocated between the positions of two data elements in order to code positions of other data elements. The present invention also relates to a method for coding positions of data elements in a data structure, whereby position codes are associated with the data elements in a pre-determined sequence, the position codes being selected in such a way that other position codes can be allocated between the positions of two adjacent data elements in order to code positions of other data elements, at least one other position code being longer than the longest position codes of the two adjacent data elements. | 12-10-2009 |
20100049863 | METHOD FOR SYNCHRONISING SCENE DATA FILES AND MEDIA DATA FLOWS IN AN UNIDIRECTIONAL BROADCAST SYSTEM - A method for the temporal synchronization of data packets of at least one media data flow with scene data files describing at least one scene and/or the data packets of said data files, in a unidirectional broadcast system. The data packets of the media data flow are each provided with a first time mark relating to a first reference time, and the scene data files and/or the data packets thereof are each provided with a second time mark relating to a second reference time. At least one time mark allocation data flow is transmitted from the transmitter to the receiver, the first time marks of the media data flow and the second time marks of the scene data files and/or the data packets thereof being respectively associated with a third time mark relating to a third reference time. | 02-25-2010 |
20100254458 | METHOD AND DEVICE FOR ESTABLISHING A CODED OUTPUT VIDEO STREAM FROM AT LEAST TWO CODED INPUT VIDEO STREAMS AND USE OF THE DEVICE AND CODED INPUT VIDEO STREAM - Second images coded in a coded output video stream are generated for the visual display of image contents of first images coded in multiple coded input video streams, such that first coded image data of the coded input video streams are copied into second coded image data of the coded output video stream. | 10-07-2010 |
20110055684 | METHOD FOR IMPROVING THE FUNCTIONALITY OF A BINARY REPRESENTATION - A method for improving functionality of a binary representation of an XML-based content description, wherein a structure of any instance of an XML-document corresponds to a tree-like data structure including a plurality of tree nodes, is provided. The method includes providing that each tree node represents an element of the content description and has a structure which is defined in a schema; providing the tree nodes in binary representation with tree branch codes; providing that the respective tree branch code has a schema branch code; extending an existing schema by utilizing unused schema branch codes in a tree node for extensions with new elements until the unused schema branch codes are all used up, and increasing a bit length of the schema branch code as necessary; and communicating a bit length change to a decoder for correctly decoding the content description in the binary representation. | 03-03-2011 |
20120155538 | METHODS AND DEVICES FOR CREATING, DECODING AND TRANSCODING AN ENCODED VIDEO DATA STREAM - An image block is encoded by an inter-layer prediction into a first encoded image block and also encoded into a second encoded image block based on an encoding mode that excludes inter-layer prediction. The encoded first and second image blocks are decoded into reconstructed first and second image blocks, respectively. The first encoded image block is inserted into the encoded video stream. When encoding image blocks by an encoding mode that references the reconstructed first image block, the reference to the reconstructed second image block is changed. The image block encoded in this way is inserted into the encoded video data stream to achieve both a high compression rate with high image quality and low complexity in transcoding that can be used with different end devices by a scalable encoded video data stream, such as a video-on-demand service. | 06-21-2012 |
20120288213 | METHOD FOR REDUCING NOISE FOR CODING OF NOISY IMAGES OR IMAGE SEQUENCES - A prediction error (e | 11-15-2012 |
20130114702 | METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO SIGNAL - An encoder encodes a video signal formed of video frames, each including image blocks. The encoder includes a processing unit which calculates at least one high resolution reference image block on the basis of previously encoded image blocks by executing a super resolution algorithm to perform a local motion compensation; and a motion compensation unit which calculates on the basis of the calculated high resolution reference image block a temporal predictor which is subtracted from a current image block of the video signal. Together, the encoder and a corresponding decoder improve the signal quality of a video signal significantly. | 05-09-2013 |
20130300940 | METHOD FOR PROCESSING A COMPRESSED VIDEO STREAM - For a compressed video stream formed of a sequence of compressed data packets, each compressed packet is assigned to a frame by processing the undecoded data packet. A frame includes packets. A first plurality of frames is assigned to a first sliding window and a second plurality of frames is assigned to a second sliding window. The first and second sliding windows have different frames. A first window indicator is calculated by determining a first indicator representing an average number of packets per frame within the first window, and/or a second indicator representing size information of the data within the first window. A second window indicator is calculated by determining a third indicator representing an average number of packets per frame within the second window, and/or a fourth indicator representing size information of the data within the second window. The first and the second window indicators are compared. | 11-14-2013 |
20130301711 | COMPRESSION AND DECOMPRESSION OF REFERENCE IMAGES IN A VIDEO ENCODER - Methods and devices transform image data, which are transformed by a compression filter before being compressed and stored in a reference image memory. In an extension, an inverse transformation to that of the compression filter is performed by a decompression filter when image data from the reference memory are read out and decompressed. The methods and devices can be used for image compression methods and image decompression methods that use reference image memories. | 11-14-2013 |
20140003517 | COMPRESSION AND DECOMPRESSION OF REFERENCE IMAGES IN A VIDEO CODING DEVICE | 01-02-2014 |
20140049607 | Devices and Methods for Sparse Representation of Dense Motion Vector Fields for Compression of Visual Pixel Data - A coding method for the compression of an image sequence involves firstly determining a dense motion vector field for a current image region of the image sequence by comparison with at least one further image region of the image sequence. Furthermore, a confidence vector field is determined for the current image region. The confidence vector field specifies at least one confidence value for each motion vector of the motion vector field. Based on the motion vector field and the confidence vector field, motion vector field reconstruction parameters are then determined for the current image region. Furthermore, a decoding method decodes image data of an image sequence which were coded by such a coding method. | 02-20-2014 |