Publications related to Holographic recording of fast events on a CCD camera

Accurate Color Demosaicing inspired by the Human Visual System

There is an analogy between one-chip CCD cameras and the human visual system in that these two systems acquire only one wavelength sensitivity band per spatial location. We have exploited this analogy, defining a model that characterizes a one-color per sp ...

2003

$ l _{ p } $ -Multiresolution Analysis: How to Reduce Ringing and Sparsify the Error

Michaël Unser, Thierry Blu

We propose to design the reduction operator of an image pyramid so as to minimize the approximation error in the

l _{ p }

-sense (not restricted to the usual p=2), where p can take non-integer values. The underlying image model is specified using shift- ...

IEEE2002

Holographic techniques for recording ultrafast events

Demetri Psaltis

In this paper we report on a holographic method used to record fast events in the nanosecond time scale. Several frames of the expansion of shock waves in air and in a polymer sample are recorded holographically in a single shot experiment, using a pulse t ...

2002

Method and apparatus for authentication of documents by using the intensity profile of moire patterns

Roger Hersch, Isaac Amidror

The present invention relates to a new method and apparatus for authenticating documents such as banknotes, trust papers, securities, identification cards, passports, etc. The documents may be printed on any support, including transparent synthetic materia ...

2001

Methods and apparatus for authentication of documents by using the intensity profile of moire patterns

Roger Hersch, Isaac Amidror

New methods and apparatus for authenticating security documents such as banknotes, passports, etc. which may be printed on any support, including transparent synthetic materials and traditional opaque materials such as paper. The invention is based on moir ...

2001

Non-Euclidean Pyramids

Michaël Unser, Thierry Blu

We propose to design the reduction operator of an image pyramid so as to minimize the approximation error in the

l _{ p }

sense (not restricted to the usual p = 2), where p can take non-integer values. The underlying image model is specified using arbi ...

SPIE2000

Bi-directional Photogoniometer for the Assessment of the Luminous Properties of Fenestration Systems

Marilyne Andersen, Jean-Louis Scartezzini, Christian Roecker, Laurent Michel

Most energy saving applications of advanced fenestration systems (solar blinds, novel types of glazing and daylight redirecting devices) require a precise knowledge of their directional light transmission features. These photometric properties can be descr ...

LESO-PB, EPFL2000

Fast magnetic fluctuation diagnostics for Alfven eigenmode and magnetohydrodynamics studies at the Joint European Torus

Ambrogio Fasoli, Jean-Marc Moret

Alfven eigenmodes and other magnetohydrodynamic phenomena have been studied in tokamak plasmas at the Joint European Torus (JET) using a new eight-channel, 4 s, 1 MHz, 12-bit data acquisition system (KC1F) in conjunction with the JET fast Mirnov magnetic f ...

2000

Optically programmable gate array

Demetri Psaltis

The Optically Programmable Gate Array (OPGA), an optical version of a conventional FPGA, benefits from a direct parallel interface between an optical memory and a logic circuit. The OPGA utilizes a holographic memory accessed by an array of VCSELs to progr ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2000

Single acquisition polarisation imaging with digital holography

René Salathé, Christian Depeursinge, Etienne Cuche, Guy Delacrétaz

A demonstration of the ability of digital holography to image and to measure spatial variations of the polarisation of an object wave with a single image acquisition is presented. This is achieved by recording a hologram with two reference beams presenting ...

1999

Holographic recording of fast events on a CCD camera

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Accurate Color Demosaicing inspired by the Human Visual System

$ l _{ p } $ -Multiresolution Analysis: How to Reduce Ringing and Sparsify the Error

Holographic techniques for recording ultrafast events

Method and apparatus for authentication of documents by using the intensity profile of moire patterns

Methods and apparatus for authentication of documents by using the intensity profile of moire patterns

Non-Euclidean Pyramids

Bi-directional Photogoniometer for the Assessment of the Luminous Properties of Fenestration Systems

Fast magnetic fluctuation diagnostics for Alfven eigenmode and magnetohydrodynamics studies at the Joint European Torus

Optically programmable gate array

Single acquisition polarisation imaging with digital holography

Single acquisition polarisation imaging with digital holography

Method and apparatus for authentication of documents by using the intensity profile of moire patterns

Holographic techniques for recording ultrafast events

Methods and apparatus for authentication of documents by using the intensity profile of moire patterns

Optically programmable gate array

$ l _{ p } $ -Multiresolution Analysis: How to Reduce Ringing and Sparsify the Error

Non-Euclidean Pyramids

Bi-directional Photogoniometer for the Assessment of the Luminous Properties of Fenestration Systems

Fast magnetic fluctuation diagnostics for Alfven eigenmode and magnetohydrodynamics studies at the Joint European Torus

Accurate Color Demosaicing inspired by the Human Visual System