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The Visual Object Tracking challenge 2015, VOT2015, aims at comparing short-term single-object visual trackers that do not apply pre-learned models of object appearance. Results of 62 trackers are presented. The number of tested trackers makes VOT 2015 the largest benchmark on shortterm tracking to date. For each participating tracker, a short description is provided in the appendix. Features of the VOT2015 challenge that go beyond its VOT2014 predecessor are: (i) a new VOT2015 dataset twice as large as in VOT2014 with full annotation of targets by rotated bounding boxes and per-frame attribute, (ii) extensions of the VOT2014 evaluation methodology by introduction of a new performance measure. The dataset, the evaluation kit as well as the results are publicly available at the challenge website 1 .

RANSAC (Random Sample Consensus) has been popular in regression problem with samples contaminated with outliers. It has been a milestone of many researches on robust estimators, but there are a few survey and performance analysis on them. This paper categorizes them on their objectives: being accurate, being fast, and being robust. Performance evaluation performed on line fitting with various data distribution. Planar homography estimation was utilized to present performance in real data.

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sensors, [8][9][10] and structural camouflage. [1,2] When paired with auditory counterpart, i.e., sound, the color facilitates the effective transfer of information from devices to humans, therein rationalizing the stereotypical designs of contemporary devices, which contain both sound and color modules. With regard to color, nature has, via evolution, mastered the art of emitting and reflecting light, as evidenced by bioluminescence, [11] and structural color, [12] which in turn, can be juxtaposed with man-made emissive displays [13] and structural materials with photonic band gaps, [14] respectively. Indeed, while most artificial photonic devices intrinsically lack the ability to modulate their output color once their periodicity is fixed, [15] some creatures, such as cephalopods [4] and chameleons, [3] have overcome this constraint in an extrinsic manner by stretching their skin. Inspired by these naturally evolved systems, there has been an explosion of research [16] into deformable skins capable of color tunability to produce mechanochromic systems, [17][18][19] though these systems have their own inherent disadvantages, [8,16,20,21] including slow response rates, limited ranges of tunability, and high propensity for electrical and mechanical failure.Transducing electrical energy in the form of excitation voltages in a dielectric elastomer actuator (DEA) [22][23][24][25] grants us access to large areal strains with high response rates by way of induced Maxwell stress across a dielectric medium. The introduction of a photonic layer between the two electrodes of the DEA, however, increases the requisite working threshold voltage to effect the required transduction and thereby the likelihood of dielectric breakdown. [26] This complication can be resolved by attaching the photonic layer to the exterior of the DEA. [27] In this regard, using hydrogels that are intrinsically soft, comparable to biological tissue (Young's modulus, E < 1 MPa), stretchable and able to withstand significant physical deformation in their swollen state [17,28,29] would appear to be an obvious choice. However, as their superior properties are so heavily reliant on their water contents, the ease of evaporation and high vapor pressure of their solvent (for water, ≈2.3 kPa) compared to other organic solvents (e.g., ethylene glycol, EG, ≈0.5 kPa) render them ill-suited for this particular application, which necessitates long-lasting softness. Here we demonstrate a photonic organogel [poly(2-hydroxyethyl methacrylate-co-acrylamide) (pHEMA-co-AAm)] with EG as the solvent to sustain the Color, as perceived through the eye, transcends mere information in the visible range of electromagnetism and serves as an agent for communication and entertainment. Mechanochromic systems have thus far only aimed at satisfying the sense of vision and have overlooked the possibility of generating acoustic vibrations in concert with their visual color responses that would enable the simultaneous satisfaction of the auditory system. Transcending the boundaries of ...

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In this paper, we consider the problem of a group of autonomous mobile robots and a human moving coordinately in a real-world implementation. The group moves throughout a dynamic and unstructured environment. The key problem to be solved is the inclusion of a human in a real multi-robot system and consequently the multiple robot motion coordination. We present a set of performance metrics (system efficiency and percentage of time in formation) and a novel flexible formation definition whereby a formation control strategy both in simulation and in real-world experiments of a human multi-robot system is presented. The formation control proposed is stable and effective by means of its uniform dispersion, cohesion and flexibility.

This study investigates the nonlinear dynamics of traction for an omniwheel mobile robot platform. A nonlinear slip model is incorporated into the dynamics of the system and the resulting equations of motion are derived using a EulerLagrange formulation. These are additionally transformed into slip-space, where the dynamical equations lend themselves to a convenient analysis of the slip dynamics. The conventional assumptions for ideal rolling are also explored and a reduced expression for the nonlinear dynamics is generated for such situations. Preliminary explorations toward a comprehensive analysis of the dynamics for omniwheel platforms under various control schemes is also initiated.