摘要:
An apparatus for determining rectifying homographies for a linear camera array with a common baseline and co-oriented is configured to provide feature point triplets in three images of a scene captured by three cameras of the linear camera array; using positions (u,v), (υ',&ngr;'), (u",v") of the feature point triplets, form, per feature point triplet, a linear equation of type Ax = b, where x is a vector the components x j. of which comprise geometric parameters, and A is a matrix and b is a vector, both dependent on the positions (u, v), (υ',&ngr;'), (u",v") of the respective feature point triplet such that Ax = b is rewriteable into (formula 1), where T 1, T 2, T3 are correlation slices of a trifocal tensor the elements (formula 2) of which relate to projection matrices P, (formula 3) describing the projections of a first, second and third of the three cameras, respectively.
摘要:
A method for generating 3D-information from multiple images showing a 3D scene from multiple perspectives has: providing at least two hypotheses for the 3D-information; performing a multi-hypotheses test by matching the at least two hypotheses to the multiple images and determining a test-result hypothesis that fulfills a particular matching criterion; updating the test-result hypothesis by varying a parameter set of the test-result hypothesis to further improve the matching criterion or another criterion; and determining the 3D-information on the basis of the parameter set of a resulting hypothesis provided by the action of updating the test-result hypothesis. A corresponding computer readable digital storage medium and a 3D-information generator are also described. Further embodiments perform a correspondence analysis between projections of spatio-temporal objects (STO) in multiple images to select a particular spatio-temporal object on the basis of said correspondence analysis.
摘要:
A filter structure for filtering a disparity map includes a first filter, a second filter, and a filter selector. The first filter is for filtering a contemplated section of the disparity map according to a first measure of central tendency. The second filter is for filtering the contemplated section of the disparity maps according to a second measure of central tendency. The filter selector is provided for selecting the first filter or the second filter for filtering the contemplated section of the disparity map, the selection being based on at least one local property of the contemplated section. A corresponding method for filtering a disparity map includes determining a local property of the contemplated section and selecting a filter. The contemplated section is then filtered using the first filter or the second filter depending on a result of the selection.
摘要:
A filter structure for filtering a disparity map includes a first filter, a second filter, and a filter selector. The first filter is for filtering a contemplated section of the disparity map according to a first measure of central tendency. The second filter is for filtering the contemplated section of the disparity maps according to a second measure of central tendency. The filter selector is provided for selecting the first filter or the second filter for filtering the contemplated section of the disparity map, the selection being based on at least one local property of the contemplated section. A corresponding method for filtering a disparity map includes determining a local property of the contemplated section and selecting a filter. The contemplated section is then filtered using the first filter or the second filter depending on a result of the selection.
摘要:
A provision of high quality panoramic or semi-panoramic 3D scenes is achieved at reasonable efforts by arranging the plurality of camera pairs, each of which is associated with a respective one of mirror plane surfaces of a pyramid or clipped-pyramid shaped mirror in that same is directed towards the respective associated mirror plane surface, such that for each camera pair the virtual positions of pivot points of the cameras of the respective camera pair are offset from each other along a straight baseline which, in turn, is offset from the axis of the mirror, and a distance between virtual points of a left-hand channel camera of a first camera pair associated with a first mirror plane surface and a right-hand channel camera of a second camera pair associated with a second mirror plane surface positioned neighboring the first mirror plane surface, deviates from a length of the baselines of the camera pairs by less than 10% of the length of the baselines.
摘要:
An apparatus for estimating a disparity map based on at least two images is provided. The apparatus includes at least two processing units, which include a pixel recursion unit configured to determine a disparity value as a pixel recursion disparity candidate based on a plurality of pixel values of the at least two images and a selector configured to select a selected disparity candidate to determine at least one of the disparity map values of the disparity map. The selector is adapted to select the selected disparity candidate from a candidate group assigned to the selector. The candidate group assigned to the selector includes the pixel recursion disparity candidate, a second disparity candidate and a third disparity candidate. Moreover, the selector is adapted to select the selected disparity candidate independently from a different selector of a different processing unit of the at least two processing units.
摘要:
A provision of high quality panoramic or semi-panoramic 3D scenes is achieved at reasonable efforts by arranging the plurality of camera pairs, each of which is associated with a respective one of mirror plane surfaces of a pyramid or clipped-pyramid shaped mirror in that same is directed towards the respective associated mirror plane surface, such that for each camera pair the virtual positions of pivot points of the cameras of the respective camera pair are offset from each other along a straight baseline which, in turn, is offset from the axis of the mirror, and a distance between virtual points of a left-hand channel camera of a first camera pair associated with a first mirror plane surface and a right-hand channel camera of a second camera pair associated with a second mirror plane surface positioned neighboring the first mirror plane surface, deviates from a length of the baselines of the camera pairs by less than 10% of the length of the baselines.