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CAIP
2011
Springer

Exploiting Image Collections for Recovering Photometric Properties

9 years 2 months ago
Exploiting Image Collections for Recovering Photometric Properties
Abstract. We address the problem of jointly estimating the scene illumination, the radiometric camera calibration and the reflectance properties of an object using a set of images from a community photo collection. The highly ill-posed nature of this problem is circumvented by using appropriate representations of illumination, an empirical model for the nonlinear function that relates image irradiance with intensity values and additional assumptions on the surface reflectance properties. Using a 3D model recovered from an unstructured set of images, we estimate the coefficients that represent the illumination for each image using a frequency framework. For each image, we also compute the corresponding camera response function. Additionally, we calculate a simple model for the reflectance properties of the 3D model. A robust non-linear optimization is proposed exploiting the high sparsity present in the problem.
Mauricio Díaz, Peter F. Sturm
Added 13 Dec 2011
Updated 13 Dec 2011
Type Journal
Year 2011
Where CAIP
Authors Mauricio Díaz, Peter F. Sturm
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