Concept

Point spread function

Related publications (101)

Measurement and interpretation of the 3D amplitude point spread function of lenses and microscope objectives

The intensity point spread function (IPSF) is most often used to characterize optical imaging systems. For some imaging applications such as digital holographic microscopy the 3D amplitude point spread function (APSF) more completely describes an optical s ...

EPFL2005

Force Spectroscopy with a Novel Small Focus AFM

Jürgen Brugger, Johannes Steen

Atomic force microscopy has become potent tool for investigating interand intramolecular interactions. Single molecule force spectroscopy on supramolecular guest-host-complexes reveal information about the depth of the binding pocket and thermal off-rates. ...

2005

Point spread function models for digital holographic microscopy

Christian Depeursinge, Mihaela Marian

Few models, based on the diffraction theory, are proposed in order to evaluate the point spread function of different microscope objectives used in a digital holographic microscope. Because in holography the phase information is essential, a 3D amplitude p ...

SPIE2004

On the Feasibility of Axial Tracking of a Fluorescent Nano-Particle Using a Defocusing Model

Michaël Unser, Dimitri Nestor Alice Van De Ville

The image of a sub-resolution nano-particle in fluorescence microscopy corresponds to a slice of the 3D point spread function (PSF). This slice relates to the out-of-focus distance of the nano-particle. In this paper, we investigate to which extent it is p ...

IEEE2004

Artifical compound eyes - Different concepts and their application to ultra flat image acquisition sensors

Hans Peter Herzig, Toralf Scharf

Two different approaches for ultra flat image acquisition sensors on the basis of artificial compound eyes are examined. In apposition optics the image reconstruction is based on moiré- or static sampling while the superposition eye approach produces an ov ...

2004

High light field confinement for Fluorescence Correlation Spectroscopy using a Solid Immersion Lens

Theo Lasser, Denis Martin, Ramachandra Rao

In this paper we present recent single molecule detection experiment using a solid immersion lens (SIL) for fluorescent correlation spectroscopy measurements. We compared the performance of the SIL in combination with an air objective (40×, numerical apert ...

2004

Point spread function model for microscopic image deconvolution in digital holographic microscopy

Christian Depeursinge, Etienne Cuche, Mihaela Marian

A simple model is proposed in order to evaluate the complex amplitude point spread function (intensity and phase) of a microscope objective. The model is based on the Fresnel diffraction theory and takes also into account the possible optical aberrations. ...

SPIE2003

Locally Temporal Adaptive Transform Scheme for Sub-band Video Coding

Pierre Vandergheynst, Oscar Divorra Escoda

The work presented in this paper extends the concept of sub-band video coding based on a 3D wavelet transform to a more adaptive approach. A formal comparison is presented between the performances inferred by the use of the 3D wavelet transform and the use ...

IEEE2003

Prediction of monochrome reflectance spectra with an extended Kubelka-Munk model

Roger Hersch, Patrick Emmel, Safer Mourad

We present a prediction model for digital printers and more specifically for electrophotographic devices. On the one hand, we propose an electrophotographic simulation model which estimates the microscopic structure of any printed toner layer based on its ...

Society for Imaging Science and Technology2002

Structure analysis by diffraction of amorphous zones created by Ni ion implantation into pure Al

Aïcha Hessler-Wyser

The implantation of Ni ions into pure Al leads to the formation of similar to 10 nm amorphous zones (AZ) which induce diffuse rings in the diffraction pattern in addition to the diffraction spots of the crystal. Measurements by energy dispersive spectromet ...

2000

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