Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Laparoscopic image analysis for automatic tracking of surgical tools
Year:2008
Research Areas
  • Artificial intelligence,
  • Medicine,
  • Programming language
Information
Abstract
Vision-based tracking of laparoscopic tools offers new possibilities for improving surgical training and for developing new augmented reality surgical applications. We present an original method to determine not only the tip position, but also the orientation of a laparoscopic tool respect to the camera coordinate frame. A simple mathematical formulation shows how segmented tool edges and camera field of view define the tool 3D orientation. Then, 3D position of the tool tip is determined by image 2D coordinates of any known point of the tool and by tool’s diameter. Accuracy is evaluated in real image sequences with known ground truth. Results show a positioning error of 9,28 mmRMS, what is explained by inaccuracies in the estimation of tool edges. The main advantage of proposed method is its robustness to occlusions of the tool tip
International
Si
Congress
Computer Assisted Radiology and Surgery 22nd International Congress and Exhibition (CARS 2008)(CARS 2008)
960
Place
Barcelona
Reviewers
Si
ISBN/ISSN
1861-6410
Start Date
25/06/2008
End Date
28/06/2008
From page
279
To page
279
Proceedings of the Computer Assisted Radiology and Surgery 22nd International Congress and Exhibition (CARS 2008)(CARS 2008)
Participants
  • Autor: Alicia Cano González (UPM)
  • Autor: Patricia Sanchez Gonzalez (UPM)
  • Autor: Enrique Javier Gomez Aguilera (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Bioingeniería y Telemedicina
  • Departamento: Urbanística y Ordenación del Territorio
  • Departamento: Tecnología Fotónica
  • Centro o Instituto I+D+i: Centro de tecnología Biomédica CTB
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