Rectified Surface Mosaics

Rectified Mosaicing: Mosaics without the Curl

When images captured by a tilted camera are mosaiced into a panorama, the resulting mosaic is curled. This happens, for example, with a panning camera that is not perfectly horizontal, and with a translating camera facing a tilted planar surface. The tilt of the camera causes differences in image velocity between the top and bottom parts of the image, causing the curled mosaic. In rectified mos...

Mesh Generation Based On Surface Mosaics

A "shocking" case rectified.

Journal: Pacing and Clinical Electrophysiology Manuscript ID: PACE-13-0055.R1 Wiley Manuscript type: Device Rounds Date Submitted by the Author: n/a Complete List of Authors: Van Heuverswyn, Frederic; Ghent University Hospital, Heart Center Timmers, Liesbeth; Ghent University Hospital, Heart Center Combes, Matthieu; Ghent University Hospital, Heart Center Stroobandt, Roland; Ghent University Ho...

Rectified Factor Networks

We propose rectified factor networks (RFNs) as generative unsupervised models, which learn robust, very sparse, and non-linear codes with many code units. RFN learning is a variational expectation maximization (EM) algorithm with unknown prior which includes (i) rectified posterior means, (ii) normalized signals of hidden units, and (iii) dropout. Like factor analysis, RFNs explain the data var...

The Rectified Gaussian Distribution

A simple but powerful modification of the standard Gaussian distribution is studied. The variables of the rectified Gaussian are constrained to be nonnegative, enabling the use of nonconvex energy functions. Two multimodal examples, the competitive and cooperative distributions, illustrate the representational power of the rectified Gaussian. Since the cooperative distribution can represent the...