30 citations · 89 across the 6 of their papers we have counts for
6 papers
Automated Calibration of Mobile Cameras for 3D Reconstruction of Mechanical Pipes
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. New methods…
Towards Automatic Digital Documentation and Progress Reporting of Mechanical Construction Pipes using Smartphones
Reza Maalek, Derek Lichti, Shahrokh Maalek
This manuscript presents a new framework towards automated digital documentation and progress reporting of mechanical pipes in building construction projects, using smartphones. Ne…
Robust Detection of Non-overlapping Ellipses from Points with Applications to Circular Target Extraction in Images and Cylinder Detection in Point Clouds
Reza Maalek, Derek Lichti
This manuscript provides a collection of new methods for the automated detection of non-overlapping ellipses from edge points. The methods introduce new developments in: (i) robust…
New Confocal Hyperbola-based Ellipse Fitting with Applications to Estimating Parameters of Mechanical Pipes from Point Clouds
Reza Maalek, Derek Lichti
This manuscript presents a new method for fitting ellipses to two-dimensional data using the confocal hyperbola approximation to the geometric distance of points to ellipses. The p…
Robust Self-Supervised Learning of Deterministic Errors in Single-Plane (Monoplanar) and Dual-Plane (Biplanar) X-ray Fluoroscopy
Jacky C. K. Chow, Steven K. Boyd, Derek D. Lichti +1
Fluoroscopic imaging that captures X-ray images at video framerates is advantageous for guiding catheter insertions by vascular surgeons and interventional radiologists. Visualizin…
Modelling Errors in X-ray Fluoroscopic Imaging Systems Using Photogrammetric Bundle Adjustment With a Data-Driven Self-Calibration Approach
Jacky C. K. Chow, Derek Lichti, Kathleen Ang +3
X-ray imaging is a fundamental tool of routine clinical diagnosis. Fluoroscopic imaging can further acquire X-ray images at video frame rates, thus enabling non-invasive in-vivo mo…