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Filter-less gray patterns detection in 3D modeling by structured light

We present a novel technique of image data extraction for calibration and modeling purposes. It employs structured light approach using sequence of Gray stripes patterns for points localization and indexation. Code images for the indexation are build based on simple classification of pixel color. Points co-ordinates are extracted from intersection of code image edges without using time consuming filtering with moving window operator. UNION-FIND algorithm is used for removing spurious edge points appearing due to noise presence. Technique results in high accuracy and reliability of extracted points.