Coarse/fine motion control of a teleoperated autonomous piezoelectric nanopositioner operating under a microscope

Ferreira, Antoine; Fontaine, Jean‐Guy

doi:10.1109/aim.2001.936916

Cited by 4 publications

(1 citation statement)

References 6 publications

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“…The residual fluctuated motion in images can be reduced using various image processing techniques to estimate the local motion vectors, such as block matching [20][21][22][23], bit-plane matching [24,25], Kalman-filter-based prediction [26][27][28][29][30], DFT filtering [31], particle filter [32], scale-invariant feature [33,34], feature point matching [35][36][37][38][39], and optical flow estimation [40][41][42][43][44][45]. These systems do not require any additional mechanism or optical device for video stabilization, and they have been used as low-cost video stabilizers in various applications such as airborne shooting [46][47][48][49][50][51][52], off-road vehicles [53], and teleoperated applications [54][55][56][57], including commercial applications [58][59][60][61][62]. Researchers have been reporting various approaches to achieve real-time DIS systems [63]...…”

Section: Introductionmentioning

confidence: 99%

Real-time high-resolution video stabilization using high-frame-rate jitter sensing

et al. 2019

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In this study, the novel approach of real-time video stabilization system using a high-frame-rate (HFR) jitter sensing device is demonstrated to realize the computationally efficient technique of digital video stabilization for high-resolution image sequences. This system consists of a high-speed camera to extract and track feature points in graylevel 512 × 496 image sequences at 1000 fps and a high-resolution CMOS camera to capture 2048 × 2048 image sequences considering their hybridization to achieve real-time stabilization. The high-speed camera functions as a real-time HFR jitter sensing device to measure an apparent jitter movement of the system by considering two ways of computational acceleration; (1) feature point extraction with a parallel processing circuit module of the Harris corner detection and (2) corresponding hundreds of feature points at the current frame to those in the neighbor ranges at the previous frame on the assumption of small frame-to-frame displacement in high-speed vision. The proposed hybrid-camera system can digitally stabilize the 2048 × 2048 images captured with the high-resolution CMOS camera by compensating the sensed jitter-displacement in real time for displaying to human eyes on a computer display. The experiments were conducted to demonstrate the effectiveness of hybrid-camera-based digital video stabilization such as (a) verification when the hybrid-camera system in the pan direction in front of a checkered pattern, (b) stabilization in video shooting a photographic pattern when the system moved with a mixed-displacement motion of jitter and constant low-velocity in the pan direction, and (c) stabilization in video shooting a real-world outdoor scene when an operator holding hand-held hybrid-camera module while walking on the stairs.

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