Speaker: Matteo Dellepiane
Title: Preserving color detail in color projection and visualization: recent developments
Abstract: The best way to represent the surface appearance on a 3D geometry is to model the behavior of its surface. When the acquisition of the material properties function is not possible (due to the work environment, or to the size or shape of the object), an alternative solution is represented by the projection of color information on the 3D model from a set of calibrated images. This results of this approach depend mostly on the quality of the image set and of the alignment of images w.r.t. the 3D model. The seminar will present two recent works which aim at solving some of these issues. The first one uses optical flow to apply small local warpings to the images, before projection. This helps in preserving fine color details, like the painted decorations. The second one is related to the visualization of dense colored point clouds, where the sample density is related not only to geometric, but also to color complexity.
Matteo Dellepiane is a Researcher at CNR-ISTI. He received an advanced degree in Telecommunication Engineering (Laurea) from the University of Genova in 2002, and a PhD in Information Engineering from the University of Pisa in 2009. His research interests include 3D scanning, digital archeology, color acquisition and visualization on 3D models and perceptual rendering. He’s also one of the developers of MeshLab. Website: http://vcg.isti.cnr.it/~dellepiane/