METHOD OF ENHANCING DENSE AND SPARSE DISPARITY MAPS, ACCURACY OF RECONSTRUCTED THREE-DIMENSIONAL MODEL AND APPARATUS FOR REALISING SAID METHOD

摘要

FIELD: physics.;SUBSTANCE: method and apparatus employ computer graphics techniques to project (display, render) a primary three-dimensional model onto virtual viewing positions which coincide with positions of capturing the original images. The decoding texture is calculated, which enables to associate projection pixel coordinates with parameters of geometric beams emitted to corresponding points of the three-dimensional model. Stereoscopic juxtaposition of real images with corresponding displayed projections is carried out. Three-dimensional coordinates of the digital model are improved by translation of the found disparities, having the physical meaning of reverse engineering errors, in adjustments to the three-dimensional model using a decoding image. The process can take place iteratively until convergence, during which more accurate and sparse disparity maps and a three-dimensional model will be obtained.;EFFECT: improved quality of disparity maps and accuracy of the reconstructed three-dimensional model owing to simplification of the task of juxtaposing elements of stereoscopic pairs.;9 cl, 15 dwg