The coordinate transformation for quadrilateral isoparametric elements is well-defined in the finite element literature. However, a corresponding inverse transformation is not found. In fact, it has been commonly believed that no explicit solutions to the inverse transformation problem exist. This paper shows that if geometric considerations are used, a complete set of general solutions to the ...

Birds-eye-view (BEV) semantic segmentation is critical for autonomous driving its powerful spatial representation ability. It challenging to estimate the BEV maps from monocular images due gap, since it implicitly required realize both perspective-to-BEV transformation and segmentation. We present a novel two-stage Geometry PrIor-based Transformation framework named GitNet, consisting of (i) ge...

In this paper, we address the problem of precisely recovering the 3-D pose of 3-D shape fiducials from images obtained by means of an uncalibrated Computed Tomography (CT) imaging device. The main goal in this work is to model and estimate the geometric transformation relating line fiducials to their projections in cross-sectional images. To do so, we propose techniques which solve the points t...