Now showing items 1-5 of 5

    • A small vocabulary database of ultrasound image sequences of vocal tract dynamics 

      Castillo M.; Rubio F.; Porras D.; Contreras-Ortiz S.H.; Sepúlveda A. (Institute of Electrical and Electronics Engineers Inc., 2019)
      This paper presents a new database consisting of concurrent articulatory and acoustic speech data. The articulatory data correspond to ultrasound videos of the vocal tract dynamics, which allow the visualization of the ...
    • Analysis and classification of lung and muscular tissues in ultrasound images using 2D wavelet transform and machine learning 

      Contreras-Ojeda, S. L.; Dominguez-Jiménez, J. A.; Contreras-Ortiz, S. H. (Cartagena de Indias, 2020-11-03)
      Ultrasound has been considered a safe and accurate alternative to radiography and computerized tomography to diagnose lung diseases such as pneumonia. However, speckle noise, artifacts or certain conditions can difficult ...
    • Hexagonal filters for ultrasound images 

      Contreras-Ortiz S.H.; 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 ...
    • Optimization of convective drying assisted by ultrasound for Mango Tommy (Mangifera indica L.) 

      Méndez-Calderón E.K.; Ocampo-Castaño J.C.; Orrego C.E. (Blackwell Publishing Inc., 2018)
      Convective drying is a conventional method to prolong the shelf-life of foods that could negatively affect the product quality due to the long exposure time to high temperature. Ultrasound (US) has been used for reducing ...
    • Ultrasound image enhancement: A review 

      Contreras Ortiz S.H.; Chiu T.; Fox M.D. (2012)
      Medical ultrasound imaging uses pulsed acoustic waves that are transmitted and received by a hand-held transducer. This is a mature technology that it is widely used around the world. Among its advantages are that it is ...