Automated dimensional quality assessment of precast concrete panels using terrestrial laser scanning

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Automated dimensional quality assurance of full-scale precast concrete elements using laser scanning and BIM (2016, methodology): “An edge extraction algorithm, called the ‘vector-sum’ algorithm [28], is applied to the coordinatetransformed point cloud data to extract only the edge points of a precast concrete element.”
A framework for dimensional and surface quality assessment of precast concrete elements using BIM and 3D laser scanning (2015, methodology): “Step 3— edge and corner extraction: an autonomous edge point extraction algorithm called ‘Vector-sum algorithm’ [26]was implemented to extract only edge points along the horizontal and vertical edge lines of precast panel I.”