Listar por tema "Pixels"

Mostrando ítems 1-4 de 4

    • A low noise stenography method for medical images with QR encoding of patient information 

      Patiño Vanegas, Alberto; Contreras Ortiz, Sonia Helena; Martínez-Santos, Juan Carlos (SPIE, 2017)
      This paper proposes an approach to facilitate the process of individualization of patients from their medical images, without compromising the inherent confidentiality of medical data. The identification of a patient from ...

    • Hexagonal filters for ultrasound images 

      Contreras Ortiz, Sonia Helena; Fox M.D. (2014)
      Most of the devices for acquisition and display of medical images use rectangular lattices even though there are other sampling strategies that can be more efficient in terms of resolution. This paper proposes an approach ...

    • Method for large-scale structured-light system calibration 

      Marrugo Hernández, Andrés Guillermo; Vargas, Raúl; Romero, Lenny A; Zhang, Song (Cartagena de Indias, 2021-05-24)
      We propose a multi-stage calibration method for increasing the overall accuracy of a large-scale structured light system by leveraging the conventional stereo calibration approach using a pinhole model. We first calibrate ...

    • Pixel-wise rational model for a structured light system 

      Vargas, Raúl; Romero, Lenny A; Zhang, Song; Marrugo, Andrés G. (Cartagena de Indias, 2023-05-15)
      This Letter presents a novel structured light system model that effectively considers local lens distortion by pixel-wise rational functions. We leverage the stereo method for initial calibration and then estimate the ...

      Universidad Tecnológica de Bolívar - 2017 Institución de Educación Superior sujeta a inspección y vigilancia por el Ministerio de Educación Nacional. Resolución No 961 del 26 de octubre de 1970 a través de la cual la Gobernación de Bolívar otorga la Personería Jurídica a la Universidad Tecnológica de Bolívar.