Flash Lighting Space Sampling

10 years 9 months ago
Flash Lighting Space Sampling
Flash light of digital cameras is a very useful way to picture scenes with low quality illumination. Nevertheless, especially low-end cameras integrated flash lights are considered as not reliable for high quality images, due to known artifacts (sharp shadows, highlights, uneven lighting) generated in images. Moreover, a mathematical model of this kind of light seems difficult to create. In this paper we present a color correction space which, given some information about the geometry of the pictured scene, is able to provide a space-dependent correction of each pixel of the image. The correction space can be calculated once in a lifetime using a quite fast acquisition procedure; after 3D spatial calibration, obtained color correction function can be applied to every image where flash is the dominant illuminant. The correction space presents several advantages: it is independent from the kind of light used (provided that it is bound to the camera), it gives the possibly to correct on...
Matteo Dellepiane, Marco Callieri, Massimiliano Co
Added 27 May 2010
Updated 27 May 2010
Type Conference
Year 2009
Authors Matteo Dellepiane, Marco Callieri, Massimiliano Corsini, Paolo Cignoni, Roberto Scopigno
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