Statistical tuning of Adaptive-Weight Depth Map Algorithm

In depth map generation, the settings of the algorithm parameters to yield an accurate disparity estimation are usually chosen empirically or based on unplanned experiments -- A systematic statistical approach including classical and exploratory data analyses on over 14000 images to measure the relative influence of the parameters allows their tuning based on the number of bad pixels -- Our approach is systematic in the sense that the heuristics used for parameter tuning are supported by formal statistical methods -- The implemented methodology improves the performance of dense depth map algorithms -- As a result of the statistical based tuning, the algorithm improves from 16.78% to 14.48% bad pixels rising 7 spots as per the Middlebury Stereo Evaluation Ranking Table -- The performance is measured based on the distance of the algorithm results vs. the Ground Truth by Middlebury -- Future work aims to achieve the tuning by using signicantly smaller data sets on fractional factorial and surface-response designs of experiments

• Autores: Hoyos, Alejandro; Congote, John; Barandiaran, Iñigo; Acosta, Diego; Ruíz, Óscar
• Fecha de publicación: 2011
• Institución: Universidad EAFIT
• Repositorio: Repositorio EAFIT
• Idioma: eng
• OAI Identifier: oai:repository.eafit.edu.co:10784/9726
• Acceso en línea: http://hdl.handle.net/10784/9726
• Palabra clave: PROGRAMACIÓN HEURÍSTICA; PROCESAMIENTO DE IMÁGENES; ANÁLISIS MULTIVARIANTE; ANÁLISIS DE REGRESIÓN; ESTIMACIÓN DE PARÁMETROS; DISEÑO EXPERIMENTAL DE FACTORES; Heuristic programming; Image processing; Multivariate analysis; Regression analysis; Parameter estimation; Factorial experiments designs; Reconstrucción de la profundidad; Mapas de profundidad; Distancia Euclidiana; Visión estéreo
• License: Acceso cerrado