High-Speed All-in-Focus Image Reconstruction by Merging Multiple Differently Focused Images

2006 ◽  
pp. 909-918 ◽  
Author(s):  
Kazuya Kodama ◽  
Hiroshi Mo ◽  
Akira Kubota
Keyword(s):  
Image Reconstruction ◽  
High Speed ◽  
Focus Image

scholarly journals EVALUATION OF THE ELECTRICAL CAPACITANCE TOMOGRAPHY SYSTEM FOR MEASUREMENT USING 3D SENSOR

2019 ◽  
Vol 9 (4) ◽  
pp. 52-59
Author(s):  
Jacek Kryszyn ◽  
Damian Wanta ◽  
Waldemar T. Smolik
Keyword(s):  
Image Reconstruction ◽  
High Speed ◽  
Modular System ◽  
Capacitance Measurement ◽  
Electrical Capacitance Tomography ◽  
Electrical Capacitance ◽  
3D Image Reconstruction ◽  
Small Uncertainty ◽  
Small Change ◽  
Capacitance Tomography

Further tests of EVT4 data acquisition system for electrical capacitance tomography are presented. The modular system, which can have up to 32 channels with an individual analogue to digital converter, was designed to ensure small uncertainty of capacitance measurement at high speed of imaging. The system’s performance in the context of 3D imaging was experimentally verified. In particular, we show that the measurement of changes in capacitance due to a small change of an electric permittivity distribution for the most distant electrodes in a suitably designed 3D sensor is possible using our system. Cross-plane measurements together with the measurements for the pairs of most distant electrodes are essential for accurate reconstruction of 3D distributions. Due to sensitivity of capacitance measurements obtained in the hardware, the measurements for all electrode pairs can be used in the inverse problem – the system of equations can be extended. Although the numerical condition number of a matrix of such a system is high, image reconstruction is possible from the data obtained in our system. The results of 3D image reconstruction for simple test objects are shown.

All-in-focus image reconstruction robust to ghosting effect

2018 ◽  
Author(s):  
Sergio Gómez Angulo ◽  
Julia R. Alonso ◽  
Marija Strojnik ◽  
Ariel Fernández ◽  
Guillermo García Torales ◽  
...  
Keyword(s):  
Image Reconstruction ◽  
Focus Image
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