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Publications associées (122)

Real Time Head Pose Estimation from Consumer Depth Cameras

We present a system for estimating location and orientation of a person’s head, from depth data acquired by a low quality device. Our approach is based on discriminative random regression forests: ensembles of random trees trained by splitting each node so ...

Springer2011

Hybrid polymer microlens arrays with high numerical apertures fabricated using simple ink-jet printing technique

Jürgen Brugger, Edoardo Charbon, Vahid Fakhfouri, Dmitri Boiko, Joo Yeon Kim, Nils Benedict Brauer

Microlens arrays fabricated by a direct ink-jet printing of UV-curable hybrid polymer are reported. A periodic pattern of polymer drops was ink-jet printed on the surface-treated glass substrate and cured in the UV-light. Using this simple technique, we de ...

2011

Subwavelength-size solid immersion lens

Hans Peter Herzig, Toralf Scharf, Myun Sik Kim

We report on the fabrication and characterization of nanoscale solid immersion lenses (nano-SILs) with sizes down to a subwavelength range. Submicrometer-scale cylinders fabricated by electron-beam lithography are thermally reflowed to form a spherical sha ...

2011

Microlenses with defined contour shapes

Jürgen Brugger, Victor Javier Cadarso Busto, Loïc Jacot-Descombes

Ink-jet printing of optical ink over SU-8 pillars is here proposed as a technology for obtaining microlenses with shape control. To demonstrate the flexibility of this method, microlenses with five different contour shapes (ranging from circular and ellipt ...

Optical Society of America2011

Novel Concepts for Functional High Resolution Microscopy

Matthias Geissbühler

Functional imaging of biological cells and organs is one of the key techniques that drives new discoveries in life science research and medicine. In this thesis novel concepts for functional imaging at high spatial and temporal resolution are presented. In ...

EPFL2011

Extended depth-of-focus by digital holographic microscopy

Christian Depeursinge, Tristan Colomb, Etienne Cuche, Nicolas Pavillon, Jonas Kühn

A recurrent problem in microscopy is the finite depth-of-focus linked to the NA of microscope objectives. Digital holographic microscopy (DHM) has the unique feature of being able to numerically change the focus from a single hologram without the need of m ...

Optical Society of America2010

Generation of a high depth of focus with constant transversal spot size using a phase-only pupil filter

Pramod Rastogi, Daniel Iwaniuk

A novel approach is proposed to obtain an extended depth of focus (DoF) in white light with constant transversal spot size within the DoF. It combines a phase-only pupil filter based on multiplexed radial zones with alternating quartic phase functions. The ...

Taylor & Francis2010

Coherent transfer functions and extended depth of field

Theo Lasser, Christophe Pache, Rainer Leitgeb, Martin Villiger

To preserve the speed advantage of Fourier Domain detection in Optical Coherence Microscopy (OCM), extended depth of field is needed. With a narrow probing volume that extends over a long axial range, tissue could be measured in vivo and at cellular resolu ...

The International Society for Optical Engineering Spie-Int Soc Optical Engineering2010

Measurement of the coherent transfer function

Theo Lasser, Christophe Pache, Martin Villiger

It is important to characterize and quantify the imaging performance of optical coherence tomography (OCT) and especially optical coherence microscopy (OCM) systems for validation and calibration of the setup. We suggest using a simple rubber surface, pres ...

2010

Disparity Search Range Estimation: Enforcing Temporal Consistency

Zafer Arican

This paper presents a new approach for estimating the disparity search range in stereo video that enforces temporal consistency. Reliable search range estimation is very important since an incorrect estimate causes most stereo matching methods to get trapp ...

2010

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