The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 2019
Filed:
Jun. 07, 2016
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Mohamed Tamaazousti, Clamart, FR;
Alexandre Morgand, Ivry-sur-seine, FR;
Adrien Bartoli, Clermont-Ferrand, FR;
Abstract
A method for processing images of a scene including a surface made of a material of unknown reflectance comprises the following steps: from at least 3 different positions of an image sensor, the positions and corresponding orientations of the sensor known, acquiring images of the scene illuminated by a light source, each image containing specularity generated by reflection of the light source from the surface and depending on the position, the shape and the intensity of the light source and the reflectance of the material; in each image, detecting each specularity and for each specularity, estimating a conic approximating the specularity. It comprises constructing a quadric representing the position, intensity and shape of the light source and the reflectance of the material, on the basis of the conics, and of the position and orientation of the image sensor during the acquisition of the images containing the specularities respectively approximated by these conics.