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effet de lucarne

vignetting effect

sciences naturelles et appliquées - iate.europa.eu

L'invention concerne un système d'imagerie, qui comprend une ou plusieurs tables de consultation pouvant corriger un effet de lucarne sur un capteur d'image à l'aide d'une lentille.

An imaging system having one or more look-up tables to compensate for vignetting effect on an image sensor by a lens.

électronique et électrotechnique - wipo.int

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Single-image optical center estimation from vignetting and tangential gradient symmetry... This is accomplished by identifying the center of the vignetting effect in the image through an analysis of semicircular tangential gradients (SCTGs)...

général - core.ac.uk - PDF: citeseerx.ist.psu.edu

Laser light diffraction technique for particle sizing... Correction schemes to overcome same basic major problems such asmultiple scattering of particles and vignetting effect also presented...

PDF: eprints.utm.my

Revisiting image vignetting correction by constrained minimization of log-intensity entropy... The correction of the vignetting effect in digital images is a key pre-processing step in several computer vision applications...

PDF: srv.uib.es

Device-independent representation . . .In this paper we propose a compact device-independent representation of the photometric properties of a camera, especially the vignetting effect...

PDF: citeseerx.ist.psu.edu

Laser diffraction particle sizing: instrument probe volume relocation and elongation... In particular the probe volume axial boundaries and its location along laser beam are essentially defined by the onset of a vignetting effect where light scattered at large angles from small particles misses the transform lens...

PDF: hdl.handle.net