2026-06-29T08:14:03Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/507852023-08-27T08:15:28Zcom_20.500.14352_14col_20.500.14352_15

Novel multiresolution approach for an adaptive structured light system Quiroga Mellado, Juan Antonio Vargas Balbuena, Javier 535 Phase Calibration Topometry Surfaces Errors Óptica (Física) 2209.19 Óptica Física © 2008 Society of Photo-Optical Instrumentation Engineers. 3-D triangulation measurement systems with a fixed geometrical configuration have practical limitations that make them inappropriate for a wide variety of applications. The reason is that the ratio between the depth recovery error and the lateral extension is a constant that depends on the geometrical setup. Therefore, with a fixed triangulation setup, there is a tradeoff between field of view and depth resolution. As a consequence, measuring large areas with low depth recovery error necessitates the use of multiresolution techniques. In this work, we propose a multiresolution technique based on a camera-projector system previously calibrated and a second auxiliary camera that can move freely. The method consists of making first a measurement with a large field of view (coarse measurement). Afterwards, the geometrical configuration of the 3-D rig is changed to acquire a small field of view (fine measurement) that is referred to the original reference system and calibration parameters by means of the auxiliary camera. Using this method, a multiresolution reconstruction is possible without any optimization, registration, or recalibration process. Experimental results, which show a decrease of approximately one order of magnitude in the depth recovery error between fine and coarse measures, demonstrate the feasibility of the proposed method. Depto. de Óptica Fac. de Ciencias Físicas TRUE pub 2023-06-20T10:37:03Z 2023-06-20T10:37:03Z 2008-02 journal article https://hdl.handle.net/20.500.14352/50785 0091-3286 10.1117/1.2857404 metadata only access Spie-Soc Photo-Optical Instrumentation Engineers