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...

• Type: Conference
• Year: 2009
• Where: MIRAGE
• Authors: Matteo Dellepiane, Marco Callieri, Massimiliano Corsini, Paolo Cignoni, Roberto Scopigno
• Keywords: Color Correction, Color Correction Space, Computer Vision, Correction Space, MIRAGE 2009