نتایج جستجو برای: rigid frame

تعداد نتایج: 140905  

Journal: :Transactions of the Architectural Institute of Japan 1961

Journal: :IEEE robotics and automation letters 2022

Robots are usually equipped with 3D range sensors such as laser line scanners (LLSs) or lidars. These acquire a full scan in by manner while the robot is motion. All lines can be referred to common coordinate frame using data from inertial sensors. However, errors noisy measurements and inaccuracies extrinsic parameters between scanner also projected onto shared frame. This causes deformation f...

Journal: :Automatica 2017
Zhiyong Sun Myoung-Chul Park Brian D. O. Anderson Hyo-Sung Ahn

Most rigid formation controllers reported in the literature aim to only stabilize a rigid formation shape, while the formation orientation is not controlled. This paper studies the problem of controlling rigid formations with prescribed orientations in both 2-D and 3-D spaces. The proposed controllers involve the commonly-used gradient descent control for shape stabilization, and an additional ...

2015
Antonio Souza Antonio Apolinário

3D non-rigid registration is fundamental for tracking or reconstruction of 3D deformable shapes. Fast methods for 3D non-rigid registration are particularly interesting for markerless augmented reality applications, in which the object being used as a natural marker may undergo a non-rigid user interaction. Here, we present a multi-frame adaptive algorithm for 3D non-rigid registration implemen...

Journal: :Computer methods and programs in biomedicine 2015
Tadashi Araki Nobutaka Ikeda Nilanjan Dey Sayan Chakraborty Luca Saba Dinesh Kumar Elisa Cuadrado Godia Xiaoyi Jiang Ajay Gupta Petia Radeva John R. Laird Andrew Nicolaides Jasjit S. Suri

In IVUS imaging, constant linear velocity and a constant angular velocity of 1800 rev/min causes displacement of the calcium in subsequent image frames. To overcome this error in intravascular ultrasound video, IVUS image frames must be registered prior to the lesion quantification. This paper presents a comprehensive comparison of four registration methods, namely: Rigid, Affine, B-Splines and...

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