TY - JOUR AU - Matiukas, V. AU - Miniotas, D. PY - 2009/08/20 Y2 - 2024/03/28 TI - Detection of Laser Beam’s Center-line in 2D Images JF - Elektronika ir Elektrotechnika JA - ELEKTRON ELEKTROTECH VL - 95 IS - 7 SE - DO - UR - https://eejournal.ktu.lt/index.php/elt/article/view/10048 SP - 67-70 AB - <p>Modeling, reconstruction and visualization of 3D images is crucial in such fields as industrial engineering and manufacture, medicine, game development, etc. A physical object can be transferred to 3D virtual space by using a 3D laser scanner. Quality of the 3D model of the object scanned strongly depends on that of the laser beam’s center-line detected in the 2D image. A technique for detection of the laser beam’s center-line in a set of 2D images is presented. It uses two shifted kernels of the first-order Gaussian derivatives combined in a nonlinear way. Filtering is performed in a number of directions to select the one with the maximal response. The laser beam’s center-line is identified by the local maxima in the filtered image through evaluation of its first- and second-order derivatives. The technique was tested on images with a laser trace left on the object scanned. Ill. 7, bibl. 9 (in English; summaries in English, Russian and Lithuanian).</p> ER -