Abstract: A method codes a sequence of digital images, each image having the same image format and including a number of pixels with assigned pixel values. Motion parameters between first and second images are determined, where based on said motion parameters a motion compensation is performed for coding the sequence of images, where said motion parameters are included in the coded sequence of images. The motion parameters between a first image and a second image include a scalar field having scalar values for a plurality of image positions in the image format. The scalar field is determined such that gradient vectors derived from the scalar field correspond to motion vectors for the motion compensation.

Abstract: A method and device form a prediction value. A prediction direction is locally described by nonlinear trajectories. The prediction direction can be used in forming a prediction value to achieve a more accurate prediction determination. The method and device can be used in image compression or image-sequence compression.

Abstract: The present invention relates to a formwork anchor receptacle as well as to a formwork anchor which are used in the field of construction. Furthermore, the invention relates to a formwork element. The formwork anchor receptacle is adapted to receive an anchor rod provided to connect formwork elements. The formwork anchor receptacle comprises a section with an opening for insertion of an anchor rod and a spherical section for providing support against a formwork element.

Abstract: The invention refers to a method for coding digital image data (I), the data comprising one or more arrays of pixels (p0, p112) with corresponding pixel values (i0, . . . , i112). For each array of pixels, an autoregressive pixel-prediction method is performed based on a weighted sum of reconstructed pixel values (i1, . . . , i12) of reconstructed pixels (p1, . . . , p12) in a specific neighborhood region (SN) adjacent to the current pixel (p0) to be coded. For determining the weights, the pixel values (p1, . . . , p12) in a specific training region (ST) adjacent to the current pixel (p0) are taken into account. The coding method is characterized by an appropriate determination of the specific neighborhood region (SN) and the specific training region (ST) in case that reconstructed pixel values do not exist for all pixels in the neighborhood region and the training region, e.g. at borders of the array of pixels.

Abstract: A method is provided for coding a sequence of digital images, wherein the method uses a number of prediction modes for predicting values of pixels in the images based on reconstructed values of pixels in image areas processed previously, where a prediction error between predicted values and the original values of pixels is processed for generating the coded sequence of digital images.

Abstract: Functional data structure for coding a set of digital images. Each of the images is compressed into at least-one first data stream portion, which comprises a portion of the macroblocks reduced by physical redundancies, and-one second data stream portion, which describes the redundancies. For the intraprediction macroblocks, the first data stream portion can be reduced by colour value statements with correlations to colour values from rows of pixels outside and at one edge of the intraprediction macroblock and for which, in the case of pixels outside the compressed image, a colour value default is assumed. The second data stream can comprise intrapredictors for describing the correlations, with coding of an area which is divided into first areas, each of which is occupied by the macroblocks of one of the digital images, and a second area which spaces apart the first areas and is occupied by default colour value pixels.

Abstract: Object detection includes providing an image and determining at least one feature point. The at least one feature point defines a location of an image patch used for determining a feature descriptor, and the image patch defines an image area of the image. The feature descriptor is generated based on respective image intensities of a number of respective pairs of pixels with two dimensional coordinates located inside the image patch. An n-th component of the feature descriptor for an n-th pair of pixels is derived. A threshold is set depending on the number. The feature descriptor is generated by an arrangement of the M components. An indication signal is generated for a detected object when the feature descriptor is within a predefined distance to a reference feature descriptor.

Abstract: 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.

Abstract: The embodiments relate to pixel-prediction methods and devices that are based on one of a selection of one out of at least two model functions that provide a prediction function and an adaptive model function that is capable to predict intensity characteristics of reference pixels used for prediction.

Abstract: The present invention relates to a formwork anchor receptacle as well as to a formwork anchor which are used in the field of construction. Furthermore, the invention relates to a formwork element. The formwork anchor receptacle is adapted to receive an anchor rod provided to connect formwork elements. The formwork anchor receptacle comprises a section with an opening for insertion of an anchor rod and a spherical section for providing support against a formwork element.

Abstract: Embodiments provide methods for modification of an encoded data stream of data packets, wherein each data packet comprises one information bit. In the data stream, the information bits of sequential data packets display time intervals from each other which differ from desired time intervals and which are adapted to the desired time intervals by insertion of an artificially encoded, first data packet into the encoded data stream in the encoded domain temporally after a second data packet, or by removal of a fourth data packet present in the encoded data stream from the encoded data stream in the encoded domain.

Abstract: A method codes a sequence of digital images, each image having the same image format and including a number of pixels with assigned pixel values. Motion parameters between first and second images are determined, where based on said motion parameters a motion compensation is performed for coding the sequence of images, where said motion parameters are included in the coded sequence of images. The motion parameters between a first image and a second image include a scalar field having scalar values for a plurality of image positions in the image format. The scalar field is determined such that gradient vectors derived from the scalar field correspond to motion vectors for the motion compensation.

Abstract: A prediction error (eq[x,y]) is added to a predicted frame ({circumflex over (f)}[x,y]) or a predicted block for receiving a decoded frame (gq[x,y]) or a decoded block to be further used in a prediction loop by an encoder or to be sent to the output of a decoder. The reference frame (gq[x,y]) or the reference block includes a useful signal part and a noise signal part. The reference frame (gq[x,y]) or reference block pass through a dedicated noise reducing filter to reduce or eliminate the noise signal part of the reference frame (gq[x,y]) or reference block.

Abstract: 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.

Abstract: In a sequence of digitized images having a plurality of pixels, a signal is coded for each of the images that is dependent on the image content of the images. The uncoded signal is reconstructed and reconstructed images are derived therefrom in the course of the coding process. The reconstructed images undergo filtering in which a particular reconstructed image is divided into partitions with at least one filter parameter defined for each partition. At least some of the partitions are respectively described using one or more parameters of a function that describes the curve of pixels within a predetermined image region, the pixel curve dividing the predetermined image region into at least two partitions.

Abstract: 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.

Abstract: A reconstructed image is provided within the framework of predictive coding. The reconstructed image is compressed according to a coding mode of an image coding device and stored in a reference image memory.

Abstract: In a method for coding a sequence of digitized images, a motion compensation process is performed, the motion compensation process using motion vectors between image blocks referring to a number of pixels in a current image and reference blocks referring to a number of pixels in a reference image. The reference image is based on one or more images out of the sequence. For each image block of at least a part of the current image a temporal prediction based on a corresponding reference block indicated by a motion vector is performed, resulting in a prediction error between the image block and the corresponding reference block, where the prediction error is coded. In the method of the invention, the current image in the sequence is divided into several image areas, with a reference area in the reference image being associated with each image area.

Abstract: 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.

Abstract: 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.