Objects having peculiar spectra

Recognition of 3-d Objects Having Ambiguous Views Recognition of 3-d Objects Having Ambigious Views

We present an e cent method within an active vision framework for recognizing objects which are ambiguous from certain viewpoints The approach uses an ob ject representation that is structural and appearance based At rst a preliminary object classi cation is obtained using the CRG algorithm In case of ambiguous classi cation results the system repositions its sensor and acquires additional data...

Reconstruction of objects having latent reference points

A simple recursive algorithm is proposed for reconstructing certain classes of two-dimensional objects from their autocorrelation functions (or equivalently from the modulus of their Fourier transforms-the phase-retrieval pioblem). The solution is shown to be unique in some cases. The objects contain reference points not satisfying the holography condition but satisfying weaker conditions. Incl...

Faint and peculiar objects in GAIA : results from GSC - II

The one billion objects in the GSC-II make up a formidable data set for the hunt of peculiar and rare targets such as late type stars, white dwarfs, carbon dwarfs, asteroids, variable stars, etc. Here we present a survey to search for ancient cool white dwarfs, which led to the discovery of several stars with peculiar spectral distributions and extreme physical properties. Finally, we discuss t...

The Spectra of Operators Having Resolvents of First-order Growth^)

Real Spectra in Non-Hermitian Hamiltonians Having P T Symmetry

The condition of self-adjointness ensures that the eigenvalues of a Hamiltonian are real and bounded below. Replacing this condition by the weaker condition of P T symmetry, one obtains new infinite classes of complex Hamiltonians whose spectra are also real and positive. These P T symmetric theories may be viewed as analytic continuations of conventional theories from real to complex phase spa...