Simulasi Rekonstruksi Citra Pada Sensor Brain ECVT (Electrical Capacitance Volume Tomography) dengan Metode ILBP (Iterative Linear Back Projection)

Nita Handayani, Kharisma Fajar H, Freddy Haryanto, Siti Nurul K, Marlin R Baidillah, Warsito P Taruno

Abstract

The purpose of this study is to simulate the sensor 32-channel Brain ECVT image reconstruction using ILBP (Iterative Linear Back Projection) methods. ECVT is a dynamic volume imaging technique that utilizes non-linear difference of electric field distribution to determine the distribution of permittivity in the sensing area. ECVT has measured the capacitance of data as a result of changes in the permittivity distribution between the electrode pairs. ECVT device consists of three main parts: helmet-shaped sensors, DAS (Data Acquisition System), PC for display and image reconstruction process. Simulation of sensor design using COMSOL Multiphysics 3.5 software, while the process of image reconstruction and analysis of the results using Matlab software 2009a. The principle of ECVT includes two stages of data collection capacitance of electrodes (forward problem) and image reconstruction from the measured capacitance (inverse problem). In the study, the simulation of image reconstruction was done by varying the object position, the number of objects and charge density of the object. From the simulation results showed that the reconstructed image with ILBP method is influenced by several parameters: the object's position in the sensor,charge density value of the object, an alpha value and the number of iterations was selected.

Full Text:

PDF

References

Nurge M. A.2007. Electrical Capacitance Volume Tomography of High Contrast Dielectrics using A Cuboid Geometry. Dissertation. University of Central Florida, Orlando, Florida.

Du B., Q. Marashdeh, W. Warsito, A. Park, L.S. Fan. 2007. Development of Electrical Capacitance Volume Tomography (ECVT) and Electrostatic Tomography (EST) for 3D Density Imaging of Fluidized Bed System.The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering, pp. 473-480.

Wang F., Marashdeh Q., Wang A., and Fan L.S. 2012. Article : Electrical Capacitance Volume Tomography Imaging of Three Dimensional Flow Structures and Solids Concentration Distributions in a Riser and a Bend of a Gas−Solid Circulating Fluidized Bed. Industrial & Engineering Chemistry Research. ACS Publications, pp.10968-10976.

Baidillah, M. R., Mukhlisin M., and Taruno, W. P. 2013. Comparison of Sensor Geometries for Electrical Capacitance Volume Tomography. International Journal of Innovative Computing, Information and Control. Vol. 9, No. 11, November, ISSN 1349-4198, pp. 1447-l457.

Wang F., Marashdeh Q., L.S. Fan.2010. Electrical Capacitance Volume Tomography: Design and Applications.Sensors, 10, ISSN 1424-8220, pp.1890-1917.

Isaken. 1996. A Review of Reconstruction Techniques for Capacitance Tomography. Meas. Sci. Technol. 7:325-337, Institute of Physics Publishing.

Huang S. M., A. Plaskowski, C. G. Xie, and M. S. Beck. 1989. Tomographic Imaging of Two-Component Flow Using Capacitance Sensors. J. Phys. E:Sci., Vol. 22 (3), pp. 173-177.

Xie C. G., S. M. Huang, B. S. Hoyle, R. Thorn, C. Lean, D. Snowden, and M. S. Beck. 1992. Electrical Capacitance Tomography for Flow Imaging System Model for Development of Image Reconstruction Algorithms and Design of Primary Sensor. Proc. Inst. Elect. Eng. G, Vol. 139, No. 1, pp.89-98.

Marashdeh Q. and F. L. Teixeira. 2004. Sensitivity Matrix Calculation for Fast3-D Electrical Capacitance Tomography (ECT) of Flow Systems. IEEE Trans. Magn.Vol. 40 (2), pp. 1204-1207.

Warsito, W., Marashdeh Q., and Fan L.S. 2007. Electrical Capacitance Volume Tomography. IEEE Sensors Journal. Vol. 7, No. 4, April, pp. 525-535.

Lionheart W. R. B. 2001. Reconstruction Algorithms for Permitivity and Conductivity Imaging. Proc. 2nd World Congr. Industrial Process Tomography. Hannover, Germany, pp. 4-11.

Yang W. Q., Spink D. M., York T. A., and H McCann. 1999. An Image Algorithm Based on Landweber’s Iteration Method for Electrical Capacitance Tomography. IOP Publishing Ltd. Vol. 10, pp. 1065-1069.

Nita Handayani, Siti Nurul K., Idam Arif, Freddy H., Warsito P. Taruno. 2015. Investigation of The Music’s Effect on Human Brain Activity Using ECVT Brain Scanner and EEG. Advanced Science, Engineering and Medicine (ASEM) Journal. Vol. 7, No. 10, pp. 882-887.

Article Metrics

Abstract view : 153 times
PDF - 0 times

Refbacks

  • There are currently no refbacks.