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...

The quantum mechanical harmonic oscillator Hamiltonian H = (t − ∂ t )/2 generates a one–parameter unitary group W (θ) = e in L(R) which rotates the time–frequency plane. In particular, W (π/2) is the Fourier transform. When W (θ) is applied to any frame of Gabor wavelets, the result is another such frame with identical frame bounds. Thus each Gabor frame gives rise to a one–parameter family of ...

This paper explores methods for Inferring motion of a cylindrical object from an image sequence. A local shading analysis method segments each Image Into spherical, cylindrical, and planar 'surfaces. The cylindrical surface Is characterized with a direction of generating lines determined from spatial derivatives In the image. An extended reflectance map method Is applicable to estimate gradient...

This paper experimentally investigates the cyclic inelastic performance of concentrically braced frames with and without cold formed steel stud ~CFSS! infills designed to laterally restrain braces and delay their buckling. Specimens have either diagonal tube or solid bar braces with and without CFSS and U brackets providing out-of-plane and in-plane buckling restraint. Behavioral characteristic...

Nicer-Slicer-Dicer (NSD) is a new, interactive tool for volume visualization. In addition to single scalar volumes, NSD can visualize multivariate and time series data. NSD achieves high rendering rates by compositing slice planes back-to-front while blending pixels through the use of alpha bu ering hardware. This technique introduces some small artifacts, but it works remarkably well with larg...

The design of a CCD image half-toner integrated monolithically on the focal plane with a 256 X 256 frame transfer imager is reported and the algorithm used is discussed. The imager/half-toner chip is projected to achieve a throughput of 30 frames per second.