RT journal article T1 Improved heuristics for solving large-scale Scanning Transmission Electron Microscopy image segmentation using the ordered median problem A1 Muñoz Ocaña, Juan Manuel A1 Puerto, Justo A1 Rodríguez Chía, Antonio Manuel A2 Estadística e Investigación Operativa K1 Ordered median function K1 Heuristic K1 Clustering K1 Segmentation AB The discrete ordered median problem can be applied in a wide variety of areas. The application of thisproblem in electron tomography image segmentation is currently being considered since high-quality imagesare obtained when this model is applied. However, its application means that a high computing time isrequired to obtain solutions for large-scale instances. The size of the images is of great importance in electrontomography experiments, since the larger the image size, the higher the quality of the image. With the goal ofreducing the computation times, this paper introduces different heuristic procedures to obtain feasible solutionsfor the ordered median problem that provide high-quality images in low computing times. Moreover, somenoticeable improvements for the heuristic techniques are developed, taking advantage of the particular versionsof the ordered median function that have been proven to be especially suitable for electron tomography imagesegmentation. PB Elsevier SN 0305-0548 YR 2024 FD 2024 LK http://hdl.handle.net/10498/32847 UL http://hdl.handle.net/10498/32847 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 11-nov-2026