Results 11 to 20 of about 4,867 (182)
Can Liquid Lenses Increase Depth of Field in Head Mounted Video See-Through Devices?
Journal of Imaging, 2021 Wearable Video See-Through (VST) devices for Augmented Reality (AR) and for obtaining a Magnified View are taking hold in the medical and surgical fields.
Marina Carbone +9 more
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2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2020 Autofocus is an important task for digital cameras, yet current approaches often exhibit poor performance. We propose a learning-based approach to this problem, and provide a realistic dataset of sufficient size for effective learning. Our dataset is labeled with per-pixel depths obtained from multi-view stereo, following "Learning single camera depth ...
Charles Herrmann +6 more
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SAR minimum entropy autofocusing based on Prewitt operator.
PLoS ONE, 2023 Current autofocus algorithms utilizing image criteria impose a significant computational burden. Therefore, this paper proposes a computationally efficient autofocus algorithm combined with SAR image feature points, employing the Prewitt operator to ...
Xiaoze Hou, Yanheng Ma
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2022 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2022 Focus control (FC) is crucial for cameras to capture sharp images in challenging real-world scenarios. The autofocus (AF) facilitates the FC by automatically adjusting the focus settings. However, due to the lack of effective AF methods for the recently introduced event cameras, their FC still relies on naive AF like manual focus adjustments, leading ...
Shijie Lin +5 more
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Autofocus in infrared microscopy [PDF]
2018 IEEE 23rd International Conference on Emerging Technologies and Factory Automation (ETFA), 2018 Autofocus (AF) is a widely investigated subject in the fields of natural scene images, industrial assembly and biologic microscopy. This paper proposes a new effective AF method for infrared (IR) microscopy in the context of the Integrated Circuit industry (IC).
Raphael Abele +5 more
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FPGA Implementation of a SAR Two-dimensional Autofocus Approach
Leida xuebao, 2016 For real-time autofocus of defocused images produced by Synthetic Aperture Radar (SAR), the twodimensional autofocus approach proposed in this study is used to correct the residual range cell migration and compensate for the phase error.
Guo Jiangzhe, Zhu Daiyin, Mao Xinhua
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Autofocus measurement for imaging devices
IS&T International Symposium on Electronic Imaging, 2017 Pierre Robisson +4 more
exaly +2 more sources
New algorithms to Enhanced Fused Images from Auto-Focus Images
مجلة بغداد للعلوم, 2021 Enhancing quality image fusion was proposed using new algorithms in auto-focus image fusion. The first algorithm is based on determining the standard deviation to combine two images.
Heba Kh. Abbas +3 more
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An improved phase gradient autofocus algorithm for ISAR phase autofocus problem
The Journal of Supercomputing, 2023 Abstract The Phase Gradient Autofocus Algorithm (PGA) is widely used in radar imaging due to its ability to achieve high accuracy estimation of phase error of arbitrary orders. However, in inverse synthetic aperture radar (ISAR) imaging, the target usually occupies continuous range bins and there may be multiple stronger scatters in a range bin.
Weihong Fu, Haoyi Li
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An Estimation and Compensation Method for Motion Trajectory Error in Bistatic SAR
Remote Sensing, 2022 Bistatic synthetic aperture radar (BiSAR) has drawn increasing attention in recent studies benefiting from its ability for forward-looking imaging, its capability of receiver radio silence and its resistance to jamming.
Yi Li +5 more
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