Abstract: An imaging system (500) includes an optical unit (100) that captures, from a scene (900), sets of first images (RWL, GWL, BWL) as well as sets of second images (RSL, GSL, BSL), wherein the scene (900) is illuminated with non-structured light when the sets of first images (RWL, GWL, BWL) are captured and wherein the scene (900) is illuminated with structured light when the sets of second images (RSL, GSL, BSL) are captured. A pattern processing unit (200) generates, from the second images (RSL, GSL, BSL), a recovered shadow pattern from a shadow pattern projected onto the scene (900) during illumination with structured light, wherein at least one motion-compensated reference image is used. A depth processing unit (300) obtains depth information (DI) on the basis of the recovered shadow pattern.

Abstract: An electronic system includes a circuitry (910) configured to obtain a sequence of frames of an object (990) under different viewing angles at consecutive time instances. For a first time instance, the circuitry (910) generates a point cloud descriptive for an external surface of the object on basis of (i) a point cloud obtained for a second time instance preceding the first time instance and (ii) disparity information concerning a frame captured at the first time instance.

Abstract: A method for refining a disparity/motion estimation map of an image at image regions a user has marked, including filtering the image along a mark set by the user, binarizing the filtered image to generate a binarized map of the filtered image, determining a binary step within the binarized map indicating a boundary of an object, and refining the disparity/motion estimation map on the basis of the determined binary step.

Abstract: A method for refining a disparity/motion estimation map of an image at image regions a user has marked, including filtering the image along a mark set by the user, binarizing the filtered image to generate a binarized map of the filtered image, determining a binary step within the binarized map indicating a boundary of an object, and refining the disparity/motion estimation map on the basis of the determined binary step.

Abstract: In a method for estimating motion vectors for blocks of a current video image in a sequence of video images, each video image being divided into a plurality of blocks, the following is performed: determining (13) a motion vector for a block of a previous video image; projecting (16) the determined motion vector of the block of the previous video image to a block position of the current video image, thereby obtaining a projected motion vector; and performing (18) a motion estimation for a current block of the current video image on the basis of the projected motion vector, thereby obtaining a motion vector for the current block of the current video image.

Abstract: The present invention relates to image processing. A wavelet decomposition unit (110) applies a wavelet decomposition on an image or video data signal and generates approximation and detail signals. A discontinuity detection unit (120) detects discontinuities like block boundaries and/or image contour lines in an evaluation signal selected from the approximation and detail signals. An artefact reduction unit (140) reduces edge-induced artefacts by equalizing pixel values in image areas identified by the detected discontinuities in one or more of the approximation and detail signals to obtain at least one corrected approximation or detail signal. The corrected approximation and detail signals support a reconstruction of the image data signal, wherein the reconstructed image shows reduced blocking and ringing artefacts.

Abstract: The present invention relates to an apparatus for reducing blocking artifacts in a coded video signal comprising a plurality of video frames. An apparatus is proposed comprising a wavelet decomposition unit that decomposes an input video frame by use of wavelet decomposition into at least two frequency bands, a block grid detector that detects block borders in at least one high frequency band of said at least two frequency bands, a deblocking unit that equalizes the energy of detected block borders with the energy of neighboring areas of the same high frequency band to obtain processed frequency bands to reduce blocking artifacts in said video frame, and a wavelet composition unit that composes an output video frame from said input video frame and said processed frequency bands by use of wavelet composition.