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Multi-camera triangulation of feature points based on a minimisation of the overall ℓ 2 reprojection error can get stuck in suboptimal local minima or require slow global op-timisation. For this reason, researchers have proposed op-timising the ℓ ∞ norm of the ℓ 2 single view reprojection errors , which avoids the problem of local minima entirely. In this(More)
The problem of camera calibration is two-fold. On the one hand, the parameters are estimated from known correspondences between the captured image and the real world. On the other, these correspondences themselves-typically in the form of chessboard corners-need to be found. Many distinct approaches for this feature template extraction are available, often(More)
In this demonstration, we present a new programming framework, Quasar, for heterogeneous programming on CPU and single/multi-GPU. Our programming framework consists of a high-level language that is aimed at relieving the programmer from hardware-related implementation issues that commonly occur in CPU/GPU programming, allowing the programmer to focus on the(More)
Multi-camera triangulation of feature points based on a minimisation of the overall &#x2113;<sub>2</sub> reprojection error can get stuck in suboptimal local minima or require slow global optimisation. For this reason, researchers have proposed optimising the &#x2113;<sub>&#x221E;</sub> norm of the &#x2113;<sub>2</sub> single view reprojection errors, which(More)
We show how pixel-based methods can be applied to a sparse image representation resulting from a superpixel segmentation. On this sparse image representation we only estimate a single motion vector per superpixel, without working on the full-resolution image. This allows the accelerated processing of high-resolution content with existing methods. The use of(More)
In two-view stereo matching, the disparity of occluded pixels cannot accurately be estimated directly: it needs to be inferred through, e.g., regularisation. When capturing scenes using a plenoptic camera or a camera dolly on a track, more than two input images are available, and - contrary to the two-view case - pixels in the central view will only very(More)
Non-rigid structure-from-motion in an on-line setting holds many promises for useful applications, and off-line reconstruction techniques are already very advanced. Literature has only recently started focusing on on-line reconstruction, with only a handful of existing techniques available. Here we propose a novel method of history representation which(More)
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