This paper presents a solution to panoramic image stitching of two images with coinciding optical centers, but unknown focal length and radial distortion. The algorithm operates with a minimal set of corresponding points (three) which means that it is well suited for use in any RANSAC style algorithm for simultaneous estimation of geometry and outlier rejection. Compared to a previous method fo...

It is well known that solutions to the nonlinear independent component analysis (ICA) problem are highly non-unique. In this paper we propose the “minimal nonlinear distortion” (MND) principle for tackling the ill-posedness of nonlinear ICA problems. MND prefers the nonlinear ICA solution with the estimated mixing procedure as close as possible to linear, among all possible solutions. It also h...

We study the nontrivial effects of NUT charges on shadows Kerr-Taub-NUT black holes seen by zero-angular-momentum-observers. Inclination angles with which observers gain maximal, locally extreme or minimal shadow sizes and distortions are investigated for different distributions string singularities. Typically, we discover that when observer approaches singularity, size can be relatively very s...

Composite rightand left-handed (CRLH) transmission lines with regularly spaced Schottky varactors are characterized for propagation of short envelope pulses. Due to strong dispersion, a short pulse cannot travel on a conventional CRLH line without distortion. This distortion is compensated for by the effects of Schottky varactors such that the line supports solitonic pulses, whose pulse width d...

Idiopathic granulomatous lobular mastitis (IGLM), also known as idiopathic granulomatous mastitis, is a rare chronic inflammatory lesion of the breast that can clinically and radiographically mimic breast carcinoma. The aim of this study was to describe the radiological imaging and clinical features of IGLM in order to better differentiate this disorder from breast cancer. We performed a retros...

To better understand postsurgical macular pucker in rhegmatogenous retinal detachment, we reviewed a consecutive series of 277 eyes in 268 patients in whom retinal detachment had spared the macular area and in whom no preretinal membrane with distortion of the retinal vessels had been present preoperatively. Postoperatively, 17 eyes (6.1%) developed obvious macular pucker; 260 eyes (93.9%) did ...

When action potentials from a stimulated biological preparation are recorded i t is essential to isolate the stimulus resistively and capacitively from the ground in order to minimize stimulation artifacts. Such isolation can be achieved by using a transformer of special low-capacitance construction in the output of a stimulus generator (Donaldson 1958). The most widely used arrangement for the...