Results 231 to 240 of about 7,127 (246)

Autofocusing region selection for computer vision

2008 9th International Conference on Signal Processing, 2008
Focusing region selection is an important part in autofocusing algorithm, which directly influences the accuracy, unimodality and stability of the sharpness function curve. Two criteria for focusing region selection are presented. Then, a novel region selection method based on edge mask is proposed.
Wei Jiang, Peng Yin
openaire   +2 more sources

An autofocusing measurement system with a piezoelectric translator

IEEE/ASME Transactions on Mechatronics, 1997
An autofocusing system that consists of a compact disc (CD) optical head and a piezoelectric translator (PZT) is developed for measuring the displacement or profile of a tested surface. The displacement or the profile of the tested surface can be obtained with varying accuracy by measuring the curve of the driving voltage to the expansion distance of ...
Zhang, J.H., Cai, Lilong
openaire   +2 more sources

Compressed ISAR autofocusing: Experimental results

2012 IEEE Radar Conference, 2012
This paper is reporting some experimental results of compressed inverse synthetic aperture radar (ISAR) imaging. The autofocusing procedure accepting sparse echoes is developed, which consists of range alignment and phase correction as in conventional ISAR processing.
Xiang Yu, Daiyin Zhu, Yong Li, Wei Zhang, Zhaoda Zhu   +4 more
openaire   +2 more sources

Clusters of rotating beams with autofocusing and transformation properties generated by a spatial light modulator

Applied physics B, 2023
S. Khonina, A. Porfirev
semanticscholar   +1 more source

Elastic Autofocusing

Proceedings, 2014
C.A. da Costa, M. Ravasi, G. Meles, A. Curtis   +3 more
openaire   +1 more source

Quantitative characterization of autofocusing and trapping of multi-Airy vortex beams

Physical Review A, 2023
Liu Tan, Nana Liu, Fuxi Lu, Dong-Qiang Liu, Beibei Yu, Yuting Li, Hao Wu, Kaijian Chen, Yizhe Chu, P. Hong, Yi Liang   +10 more
semanticscholar   +1 more source

Design and realization of an autofocusing Airyprime beams array

Optics & Laser Technology, 2023
Yimin Zhou, Xiang Zang, Wensong Dan, Fei Wang, Ruipin Chen, Guoquan Zhou   +5 more
semanticscholar   +1 more source

Accurate and fast autofocusing in off-axis digital holography based on step reduction search and particle swarm optimization

Optics and lasers in engineering
Ying Guan, Ze Cui, Jingyuan Zhu, Wenjing Zhou   +3 more
semanticscholar   +1 more source

Autofocusing circular symbolic umbilic beams

Optics & Laser Technology
Mingli Sun, Naicheng Zhang, Jinqi Song, Fengqi Liu, Xuanhui Lu, Kaikai Huang   +5 more
semanticscholar   +1 more source

Differentiable Beamforming for Ultrasound Autofocusing

International Conference on Medical Image Computing and Computer-Assisted Intervention, 2023
Walter Simson, Louise Zhuang, Sergio J. Sanabria, Neha Antil, Jeremy J. Dahl, D. Hyun   +5 more
semanticscholar   +1 more source