Miguel A. Guevara

Publications (5)0 Total impact

• Conference Proceeding: Computer Aided Diagnosis System to Detect Breast Cancer Pathological Lesions.

  Yosvany López, Andra Novoa, Miguel A. Guevara, Nicolás Quintana, Augusto Silva
  Progress in Pattern Recognition, Image Analysis and Applications, 13th Iberoamerican Congress on Pattern Recognition, CIARP 2008, Havana, Cuba, September 9-12, 2008. Proceedings; 01/2008
• Conference Proceeding: Breast Cancer Diagnosis Based on a Suitable Combination of Deformable Models and Artificial Neural Networks Techniques.

  Yosvany López, Andra Novoa, Miguel A. Guevara, Augusto Silva
  Progress in Pattern Recognition, Image Analysis and Applications, 12th Iberoamericann Congress on Pattern Recognition, CIARP 2007, Valparaiso, Chile, November 13-16, 2007, Proceedings; 01/2007
• Chapter: Development of a New Index to Evaluate Zooplanktons’ Gonads: An Approach Based on a Suitable Combination of Deformable Models

  M. Ramiro Pastorinho, Miguel A. Guevara, Augusto Silva, Luis Coelho, Fernando Morgado
  [show abstract] [hide abstract]
  ABSTRACT: Acartia tonsa was used as model to establish an index for oocyte maturity determination in zooplankters based in citometry and histochemical evaluation of gonadic masses. Biometry was performed using an ocular micrometer and nucleus/cytoplasm ratios were obtained characterizing each of the three identified stages: Immature, Vitellogenic and Mature. This paper presents a novel approach since it joins (and, indeed, reinforces) the index framework with the evaluation of the same biological samples by a suitable combination of deformable models. Nucleus contour is identified through Active Shape Models techniques, and cytoplasm contour’s detected through parametric Snakes, with prior image preprocessing based on statistical and mathematical morphology techniques. Morphometric parameters such as nucleus and cytoplasm area and ratio between them are then easily computed. As a result the dataset validated the applied methodology with a realistic background and a new, more accurate and ecologically realistic index for oocyte staging emerged.
  10/2005: pages 498-505;
• Conference Proceeding: Development of a New Index to Evaluate Zooplanktons' Gonads: An Approach Based on a Suitable Combination of Deformable Models.

  M. Pastorinho, Miguel A. Guevara, Augusto Silva, Luis Coelho, Fernando Morgado
  Progress in Pattern Recognition, Image Analysis and Applications, 10th Iberoamerican Congress on Pattern Recognition, CIARP 2005, Havana, Cuba, November 15-18, 2005, Proceedings; 01/2005
• Source

  Available from: Maria L Pereira

  Conference Proceeding: Segmentation and Morphometry of Histological Sections Using Deformable Models: A New Tool for Evaluating Testicular Histopathology.

  Miguel A. Guevara, Augusto Silva, Helena Oliveira, Maria de Lourdes Pereira, Fernando Morgado
  Progress in Pattern Recognition, Speech and Image Analysis, 8th Iberoamerican Congress on Pattern Recognition, CIARP 2003, Havana, Cuba, November 26-29, 2003, Proceedings; 01/2003