Motion in the image plane is ultimately a function of 3D motion in space. We propose to compute optical flow using what is ostensibly an extreme overparameterization: depth, surface normal, and frame-to-frame 3D rigid body motion at every pixel, giving a total of 9 DoF. The advantages of such an overparameterization are twofold: first, geometrically meaningful reasoning can be called upon in th...

We propose an evolving scheme to detect slow as well as fast moving objects in a video sequence. The proposed scheme employ both spatio-temporal and temporal segmentation to obtain the Video Object plane and hence detection. We propose a Compound Markov Random Field Model as the a priori image model that takes into account the spatial distribution of the current frame, temporal frames and the e...

A flexible calibration approach for line structured light vision system is proposed in this paper. Firstly a camera model is established by transforming the points from the 2D image plane to the world coordinate frame, and the intrinsic parameters of camera can be obtained accurately. Then a novel calibration method for structured light projector is presented by moving a planar target with a sq...

A new concept using flexible tether-net system to capture space debris is presented in this paper. With a mass point assumption the tether-net system dynamic model is established in orbital frame by applying Lagrange Equations. In order to investigate the net in-plane trajectories during after cast, the non-control R-bar and V-bar captures are simulated with ignoring the out-of-plane libration,...

The development of a numerical formulation is presented to describe viscoelastic behavior considering shear effects. nonlinear positional the Finite Element Method used plane frame elements with Reissner kinematics. description considered through adoption stress-strain relation based on Boltzmann rheological model. kinematics allows decoupling between rotations and displacements in element cros...

Abstract Robotics faces a long-standing obstacle in which the speed of vision system’s scene understanding is insufficient, impeding robot’s ability to perform agile tasks. Consequently, robots must often rely on interpolation and extrapolation data accomplish tasks timely effective manner. One primary reasons for these delays analog-to-digital conversion that occurs per-pixel basis across imag...

Ground plane perception is of vital importance to human mobility. In order to develop a stereo-based mobility aid for the partially sighted, we model the ground plane based on disparity and analyze its uncertainty. Because the mobility aid is to be mounted on a person, the cameras will be moving around while the person is walking. By calibrating the ground plane at each frame, we show that a pa...