no code implementations • 20 Dec 2020 • Reza Maalek, Derek Lichti, Shahrokh Maalek
It was observed that the proposed metric scale definition achieved sub-millimeter pipe radius estimation accuracy.
no code implementations • 4 Dec 2020 • Reza Maalek, Derek Lichti
This manuscript provides a new framework for calibration of optical instruments, in particular mobile cameras, using large-scale circular black and white target fields.
no code implementations • 19 Nov 2020 • Reza Maalek, Derek Lichti
The methods introduce new developments in: (i) robust Monte Carlo-based ellipse fitting to 2-dimensional (2D) points in the presence of outliers; (ii) detection of non-overlapping ellipse from 2D edge points; and (iii) extraction of cylinder from 3D point clouds.
no code implementations • 29 Sep 2018 • Jacky C. K. Chow, Derek Lichti, Kathleen Ang, Gregor Kuntze, Gulshan Sharma, Janet Ronsky
X-ray imaging is a fundamental tool of routine clinical diagnosis.