3D Reconstruction of Specular Objects with Occlusion: A Shape-from-Scattering Approach
نویسندگان
چکیده
In this paper, we propose a method to measure specular objects regardless occlusion. The main contribution of this paper is that we have shown that the scattering of incident and specular reflection enable us to measure occluded surfaces. We locate objects in a tank filled with participating media, irradiate a laser beam to the objects, and observe the scattering of incident light and specular reflection. Occluded reflecting points of the laser are estimated from the peak pixel; scattering light that has local maximum intensity. Experimental results with a metallic specular plate demonstrate that our method can estimate the 3D position of occluded reflecting point.
منابع مشابه
A Time-Domain Method for Shape Reconstruction of a Target with Known Electrical Properties (RESEARCH NOTE)
This paper uses a method for shape reconstruction of a 2-D homogeneous object with arbitrary geometry and known electrical properties. In this method, the object is illuminated by a Gaussian pulse, modulated with sinusoidal carrier plane wave and the time domains’ footprint signal due to object presence is used for the shape reconstruction. A nonlinear feedback loop is used to minimize the diff...
متن کاملA New Approach for Quantitative Evaluation of Reconstruction Algorithms in SPECT
ABTRACT Background: In nuclear medicine, phantoms are mainly used to evaluate the overall performance of the imaging systems and practically there is no phantom exclusively designed for the evaluation of the software performance. In this study the Hoffman brain phantom was used for quantitative evaluation of reconstruction techniques. The phantom is modified to acquire t...
متن کاملAcquiring a Complete 3D Model from Specular Motion under the Illumination of Circular-Shaped Light Sources
ÐIn this work, we recover 3D models of objects with specular surfaces. An object is rotated and its continuous images are taken. Circular-shaped light sources that generate conic rays are used to illuminate the rotating object in such a way that highlighted stripes can be observed on most of the specular surfaces. Surface shapes can be computed from the motions of highlights in the continuous i...
متن کاملActive Lighting Applied to 3D Reconstruction of Specular Metallic Surfaces by Polarization Imaging
In the field of industrial vision, the three-dimensional inspection of highly reflective metallic objects is still a delicate task. This paper deals with a new automated 3D inspection system based on polarization analysis. We first present an extension of the ‘Shape from Polarization’ method for dielectric to metallic surfaces. Then, we describe a new way of solving the ambiguity concerning the...
متن کامل3D digitization of metallic specular surfaces using scanning from heating approach
Because of the difficulty of dealing with specularity of several surfaces, few methods have been proposed to measure three-dimensional shapes of specular metallic objects. In this paper we present an application on this kind of material of an approach called “Scanning From Heating”. This approach has been developed initially for 3D reconstruction of transparent objects. This article presents an...
متن کامل