Abstract: An imaging device, and a method for automatic focus in said imaging device is disclosed. The imaging device comprises a first imaging system with a first lens system, a second imaging system with a second lens system, and an autofocus controller. The imaging device and the method are respectively able to perform a step by step autofocus search with the first lens system and the second lens system on the basis of a search parameter. Thereby, the autofocus controller obtains a result of an objective function for each of the first lens system and the second lens system after each autofocus search step, and updates the search parameter depending on the obtained results of the objective function for each of the first lens system and the second lens system.

Abstract: The disclosure relates to a method for providing a multimedia message service from a server or relay to a user agent in a multimedia network, the method comprising: determining a video content characteristic of a video content by the server or relay; determining display and/or decoding capabilities of the user agent; signaling options of the video content to the user agent; and providing the video content depending on the display and/or decoding capabilities and depending on an option selected via the user agent from the signaled options of the video content.

Abstract: The present invention provides a method and an apparatus for real time object segmentation of 3D image data based on local feature correspondences between a plurality of views. In order to reduce the computational effort of object segmentation of 3D image data, the segmentation process is performed based on correspondences relating to local features of the image data and a depth map. In this way, computational effort can be significantly reduced and the image segmentation can be carried out very fast.

Abstract: An image processing system for generating a high dynamic range image from a first image and a second image is presented. The system comprises a first displacement estimator adapted to estimate a displacement of image content between a reference image derived from the first image and an image to be warped derived from the second image. The system comprises a first warping unit that compensates the estimated displacement by warping the image to be warped resulting in a first warped image. The system comprises a first error detector adapted to detect geometric warping errors within the first warped image and a first error compensator adapted to compensate the estimated geometric warping errors within the first warped image resulting in a first error corrected image. The system comprises a high dynamic range calculator adapted to calculate the high-dynamic range image based upon the first error corrected image and the reference image.

Abstract: A communication receiver, comprising a first client being configured for reception according to the dynamic adaptive streaming over the hypertext transfer protocol (DASH), and a second client being configured for reception according to the File Delivery over Unidirectional Transport (FLUTE) protocol, wherein the first client is configured to provide a retrieve pattern to the second client, and wherein the second client is configured to retrieve a media content according to the retrieve pattern.

Abstract: A method and a multi-camera system for obtaining pictures with improved image quality. At least two cameras are used for each capturing an image, and a fast shooting mode is employed. The fast shooting mode may work in a preprocessing mode, in which the captured image of highest sharpness is acquired as a final picture, or may work in a post processing mode, in which multiple captured images are acquired, and are then post-processed to obtain a final picture of high image quality. In both modes it may be automatically determined, whether to activate the fast shooting mode or not. The determination is based on a relative movement of the multi-camera system to an object of interest, or is based on a shooting behavior of the user.

Abstract: The invention relates to a method (100) for detecting incorrect associations between keypoints of a first image and keypoints of a second image, the method (100) comprising associating (101) every keypoint of the first image with every keypoint of the second image to obtain global associations, determining (103) similarity measures for pairs of initial associations, determining (105) similarity measures for pairs of global associations, determining (107) a first number of pairs of initial associations having a similarity measure within a predetermined range, determining (109) a second number of pairs of global associations having a similarity measure within the predetermined range, and comparing (111) the first number of pairs with the second number of pairs to detect the incorrect associations. The invention further relates to an apparatus for detecting incorrect associations between keypoints of a first image and keypoints of a second image.

Abstract: The invention relates to a method (100) for context based encoding of a histogram map of an image, the histogram map representing location information of key points of the image, the method comprising: providing (101) compressed context representation information (A; B; C) associated to a given encoding size and to a given block size of a spatial grid applied to a matrix representation of the image to obtain the histogram map; computing (103), from the compressed context representation information (A; B; C), a context (201) for the given encoding size and the given block size by applying an approximation algorithm; and encoding (105) the histogram map using the context computed for the given encoding size and the given block size.

Abstract: An image processing apparatus for processing a digital image, where the digital image comprises a reference block and a plurality of further blocks, and where the image processing apparatus comprises a determiner being configured to determine a plurality of similarity measures between the reference block and the plurality of further blocks, wherein each similarity measure indicates a similarity between a noise distribution in the reference block and a noise distribution in a further block of the plurality of further blocks, and the determiner being further configured to determine a plurality of similar blocks from the plurality of further blocks upon the basis of the plurality of similarity measures.

Abstract: An image processing system for generating a high dynamic range image from a first image and a second image is presented. The system comprises a first displacement estimator adapted to estimate a displacement of image content between a reference image derived from the first image and an image to be warped derived from the second image. The system comprises a first warping unit that compensates the estimated displacement by warping the image to be warped resulting in a first warped image. The system comprises a first error detector adapted to detect geometric warping errors within the first warped image and a first error compensator adapted to compensate the estimated geometric warping errors within the first warped image resulting in a first error corrected image. The system comprises a high dynamic range calculator adapted to calculate the high-dynamic range image based upon the first error corrected image and the reference image.

Abstract: The invention relates to a method (100) for detecting incorrect associations between keypoints of a first image and keypoints of a second image, the method (100) comprising associating (101) every keypoint of the first image with every keypoint of the second image to obtain global associations, determining (103) similarity measures for pairs of initial associations, determining (105) similarity measures for pairs of global associations, determining (107) a first number of pairs of initial associations having a similarity measure within a predetermined range, determining (109) a second number of pairs of global associations having a similarity measure within the predetermined range, and comparing (111) the first number of pairs with the second number of pairs to detect the incorrect associations. The invention further relates to an apparatus for detecting incorrect associations between keypoints of a first image and keypoints of a second image.

Abstract: An imaging device, and a method for automatic focus in said imaging device is disclosed. The imaging device comprises a first imaging system with a first lens system, a second imaging system with a second lens system, and an autofocus controller. The imaging device and the method are respectively able to perform a step by step autofocus search with the first lens system and the second lens system on the basis of a search parameter. Thereby, the autofocus controller obtains a result of an objective function for each of the first lens system and the second lens system after each autofocus search step, and updates the search parameter depending on the obtained results of the objective function for each of the first lens system and the second lens system.

Abstract: A method and a multi-camera system for obtaining pictures with improved image quality. At least two cameras are used for each capturing an image, and a fast shooting mode is employed. The fast shooting mode may work in a preprocessing mode, in which the captured image of highest sharpness is acquired as a final picture, or may work in a post processing mode, in which multiple captured images are acquired, and are then post-processed to obtain a final picture of high image quality. In both modes it may be automatically determined, whether to activate the fast shooting mode or not. The determination is based on a relative movement of the multi-camera system to an object of interest, or is based on a shooting behavior of the user.

Abstract: The disclosure relates to a method for processing an image, the method comprising: providing a set of key points from the image; describing location information of the set of key points in form of a binary matrix; and scanning the binary matrix according to a pre-determined order, thereby creating a new representation of the location information of the set of key points.

Abstract: The present invention provides a method for segmentation of 3D image data of a 3D image, the method comprising: determining (20) local features for each of a plurality of views (101, 102, 103) of the 3D image; determining (30) a local feature graph based on the determined local features; and segmenting (40) the 3D image data into a plurality of depth regions based on the determined local feature graph and a depth map (110) of the 3D image.

Abstract: The invention relates to a method (100) for context based encoding of a histogram map of an image, the histogram map representing location information of key points of the image, the method comprising: providing (101) compressed context representation information (A; B; C) associated to a given encoding size and to a given block size of a spatial grid applied to a matrix representation of the image to obtain the histogram map; computing (103), from the compressed context representation information (A; B; C), a context (201) for the given encoding size and the given block size by applying an approximation algorithm; and encoding (105) the histogram map using the context computed for the given encoding size and the given block size.

Abstract: The present invention provides a method and an apparatus for real time object segmentation of 3D image data based on local feature correspondences between a plurality of views. In order to reduce the computational effort of object segmentation of 3D image data, the segmentation process is performed based on correspondences relating to local features of the image data and a depth map. In this way, computational effort can be significantly reduced and the image segmentation can be carried out very fast.

Abstract: A method of transmitting video data related to a sequence of video frames, includes: encoding the video frames according to a first predictive encoding to generate encoded video data, the encoded video data including a prediction error based on the difference between a portion of a current video frame in the sequence and a first predictor thereof based on a first preceding video frame in the sequence; generating auxiliary video data related to the portion of the current video frame; and transmitting the encoded video data and the auxiliary video data to a receiver, the encoded video data being transmitted over a first channel, and the auxiliary video data being transmitted over a second channel. The step of generating auxiliary video data includes calculating a correlation between the first predictor and a predetermined second predictor based on a second preceding video frame in the sequence, the second preceding video frame preceding in the sequence the first preceding video frame.

Abstract: A communication receiver, comprising a first client being configured for reception according to the dynamic adaptive streaming over the hypertext transfer protocol (DASH), and a second client being configured for reception according to the File Delivery over Unidirectional Transport (FLUTE) protocol, wherein the first client is configured to provide a retrieve pattern to the second client, and wherein the second client is configured to retrieve a media content according to the retrieve pattern.

Abstract: The disclosure relates to a method for providing a multimedia message service from a server or relay to a user agent in a multimedia network, the method comprising: determining a video content characteristic of a video content by the server or relay; determining display and/or decoding capabilities of the user agent; signaling options of the video content to the user agent; and providing the video content depending on the display and/or decoding capabilities and depending on an option selected via the user agent from the signaled options of the video content.