Augmented Reality and Collaborative Work in PatientPhysician relation J. Bluteau – Polytech'Grenoble, University Joseph Fourier, France At university of Tsukuba, Japan Image Laboratory – 2005/06/07
Background Augmented Reality surgery is an area of current active development. In addition, more and more collaborative applications are emerging. But very few tackle the patientphysician relationship field. Progress in Augmented Reality could help physicians to explain pathology to their patients. By showing organs and their metabolism directly on the patient's body, physician could improve their relationship. Patient and Physician could both discuss in real time on a specific case and share the same understandings. Specific therapy modeling and anatomy lesson could also be a potential field of application of this kind of research. Objective / Purpose By using AR technologies and health knowledges , the goal of this 3 months internship is to obtain a good overlaid of any body constituents on a patient (Fig 1). The input images are captured by a camera placed at the physician or patient viewpoint and overlapping is performed in real time. The result will be displayed on computer screen (easy way). To increase the efficiency of AR, the result could be projected on the patient body, but it's time consuming.
human model will be overlaid to obtain a reference position. All virtual organs will have positional relation with the 3Dhuman model. They will be resized (and customized) according to patient's body. So, organ overlapping will be precise enough for collaborative work. Technique part The prototype system involves a Sony EVID100 Camera (640*480). This camera is driven by the software in order to give some flexibility to the physician. ARToolKit 2.70 is used to detect markers (8 cm * 8 cm. Flat surface) on the patient. These markers would be fixed on a belt in a real application. 3Dmodels (human, organs, bones,...) fit the VRML2.0 format. VRML is a web format for 3D objects. To create 3Dmodel, Blender software is used. Results
Figure 2 : Localization of markers and VRML lung display. Camera control by software is enable. The localization of patient body is implemented. Relationship between markers is computed, and VRML models display is achieved (Fig 2).
Figure 1: Overlaid of lung over a 3D human model. To tackle this target, a precise localization of patient with all his movements is required. Then a 3D
Future 3Dhuman model matching over markers is required. Partial model deformation will be implemented. Other organs will be imported from a web database. Then, position relation between organs and 3Dmodel will be adjusted.
Jan 25, 2004 - depending only on contextual information. ... diagram showing the direction and magnitude of rotational forces, and a .... who were given only the color background cue (t-test,P = 0.025;Fig. 3c), ... Based on a previous study1.
In figure 2, the triangle ”on' the surface of the globe is spherical, whilst the other is plane. Napiers rules of ... -30. -20. -10. 40. 30. 20. 60. 80. 50. Φs. W. E. SS h. RE. R. 90. ES. SAT d. ΦE. B c. A b a. 90o + ELo ... Recall that. Bandwidth. 1
At the Laboratory for Interdisciplinary Physics, our team, Materials, Optics and ... This stems from two essential aspects. ... structure, requires using very high resolution analytical and imaging techniques, which still constitutes ... it is expect
connection diagrams, the ARRL Laboratory Test Procedures Manual is available ... temperature and humidity as determined by the ARRL HVAC system. .... cases, a 100-watt CW/SSB transmitter may be rated at 25 watts carrier power on AM.
S. Department of Commerce, Technology Administration, National Institute of .... Funding to support production of Standard Reference Materials (SRMs) is tied to ...... HACR is the foundation of the nation's radiometric measurement chain and is ...
changes in veterinary laboratory practice Â± some very much for the better, .... disease, prognosis and response to treatment tend to be secondary to this. It is ..... istry) units to the modern `SI' (mostly molar in biochemistry) units has created .