Concept

Photographie numérique

Publications associées (229)

Combining visible and near-infrared images for realistic skin smoothing

Skin tone images, portraits in particular, are of tremendous importance in digital photography, but a number of factors, such as pigmentation irregularities (e.g., moles, freckles), irritation, roughness, or wrinkles can reduce their appeal. Moreover, such ...

2009

Improving the power-delay performance in subthreshold source-coupled logic circuits

Seyed Armin Tajalli, Yusuf Leblebici

Subthreshold source-coupled logic (STSCL) circuits can be used in design of low-voltage and ultra-low power digital systems. This article introduces and analyzes new techniques for implementing complex digital systems using STSCL gates with an improved pow ...

Springer2009

Improving the Power-Delay Performance in Subthreshold Source-Coupled Logic Circuits

Seyed Armin Tajalli, Yusuf Leblebici

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa2009

Optimal Color Filter Array Design: Quantitative Conditions and an Efficient Search Procedure

Martin Vetterli, Yue Lu

Most digital cameras employ a spatial subsampling process, implemented as a color filter array (CFA), to capture color images. The choice of CFA patterns has a great impact on the performance of subsequent reconstruction (demosaicking) algorithms. In this ...

2009

Designing color filter arrays for the joint capture of visible and near-infrared images

Martin Vetterli, Sabine Süsstrunk, Yue Lu

Digital camera sensors are inherently sensitive to the near-infrared (NIR) part of the light spectrum. In this paper, we propose a general design for color filter arrays that allow the joint capture of visible/NIR images using a single sensor. We pose the ...

2009

Variational methods for texture segmentation

Nawal Houhou

In the last decades, image production has grown significantly. From digital photographs to the medical scans, including satellite images and video films, more and more data need to be processed. Consequently the number of applications based on digital imag ...

EPFL2009

Transmission Illuminance Proxy HDR Imaging: A New Technique to Quantify Luminous Flux

Marilyne Andersen

A technique to measure arbitrarily complex luminous fluxes across large areas is presented. The technique is founded on high-dynamic range (HDR) imaging technology and can be achieved using a standard consumer digital camera and everyday materials such as ...

SAGE Publications2009

Material Classification Using Color and NIR Images

Sabine Süsstrunk, Neda Salamati

Material classification is becoming more important in computer vision and digital photography applications, which require accurate classification of objects present in the imaged scene. This is a very challenging task because the sheer diversity of scene c ...

2009

Exact Feature Extraction Using Finite Rate of Innovation Principles With an Application to Image Super-Resolution

Loïc Arnaud Baboulaz, Pier Luigi Dragotti

The accurate registration of multiview images is of central importance in many advanced image processing applications. Image super-resolution, for example, is a typical application where the quality of the super-resolved image is degrading as registration ...

2009

Tracking the free surface of time-dependent flows: Image processing for the dam-break problem

Christophe Ancey, Steve Cochard

The dam-break problem (i.e., the sudden release of a given volume of fluid down a slope) has attracted a great deal of attention from mechanicians and physicists over the past few years, with particular interest devoted to the free-surface profile and the ...

Springer Verlag2008

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