3D UltraSound (US) probes are used in clinical applications for their ease of use and ability to obtain intra-operative volumes. In surgical navigation applications a calibration step is needed to localize the probe in a general coordinate system. This paper presents a new hand-eye calibration method using directly the kinematic model of a robot and US volume registration data that does not require any 3D localizers. First results show a targeting error of 2.34 mm on an experimental setup using manual segmentation of five beads in ten US volumes.
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http://dx.doi.org/10.1109/EMBC.2015.7318251 | DOI Listing |
Sensors (Basel)
February 2025
Department of Industrial Engineering, Universidad de los Andes, Bogotá 111711, Colombia.
Automated depalletizing systems aim to offer continuous and efficient operation in warehouse logistics, reducing cycle times and contributing to worker safety. However, most commercially available depalletizing solutions are designed primarily for highly homogeneous cargo arranged in orthogonal configurations. This paper presents a real-time approach for depalletizing heterogeneous pallets with boxes of varying sizes and arbitrary orientations, including configurations where the topmost surfaces of boxes are not necessarily parallel to each other.
View Article and Find Full Text PDFJ Imaging
February 2025
Institute of Technical Medicine, ITeM, Furtwangen University (HFU), Jakob-Kienzle-Straße 17, 78054 Villingen-Schwenningen, Germany.
Image-based 3D reconstruction enables robot-assisted interventions and image-guided navigation, which are emerging technologies in laparoscopy. When a robotic arm guides a laparoscope for image acquisition, hand-eye calibration is required to know the transformation between the camera and the robot flange. The calibration procedure is complex and must be conducted after each intervention (when the laparoscope is dismounted for cleaning).
View Article and Find Full Text PDFInt J Hyperthermia
December 2025
Department of Radiology, University of Wisconsin, Madison, WI, USA.
Purpose: The application of histotripsy, an emerging noninvasive, non-ionizing, and non-thermal tumor treatment, is currently limited by the inherent limitations of diagnostic ultrasound as the sole targeting modality. This study evaluates the feasibility and accuracy of cone beam computed tomography (CBCT) guidance for histotripsy treatments in an porcine model.
Materials And Methods: Histotripsy treatments were performed in the liver of seven healthy swine under the guidance of a C-arm CBCT system that was calibrated to the robotic arm of the histotripsy system.
Sensors (Basel)
November 2024
Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China.
The hand-eye calibration of laser profilers and industrial robots is a critical component of the laser vision system in welding applications. To improve calibration accuracy and efficiency, this study proposes a position-constrained calibration compensation algorithm aimed at optimizing the hand-eye transformation matrix. Initially, the laser profiler is mounted on the robot and used to scan a standard sphere from various poses to obtain the theoretical center coordinates of the sphere, which are then utilized to compute the hand-eye transformation matrix.
View Article and Find Full Text PDFComput Methods Programs Biomed
February 2025
Surgical Performance Enhancement and Robotics (SuPER) Centre, Department of Surgery, McGill University, 1650 Cedar Avenue, Montreal QC H3G 1A4, Canada. Electronic address:
Background: Mixed-reality-assisted surgery has become increasingly prominent, offering real-time 3D visualization of target anatomy such as tumors. These systems facilitate translating preoperative 3D surgical plans to the patient's body intraoperatively and allow for interactive modifications based on the patient's real-time conditions. However, achieving sub-millimetre accuracy in mixed-reality (MR) visualization and interaction is crucial to mitigate device-related risks and enhance surgical precision.
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