, 2020 We demonstrate that deep learning methods can determine the best focus position from 1-2 image samples, enabling 5-10x faster focus than traditional search-based methods. In contrast with phase detection methods, deep autofocus does not require specialized hardware.
Chengyu Wang +4 more
openalex +3 more sources
Using Beads as a Focus Fiduciary to Aid Software-Based Autofocus Accuracy in Microscopy [PDF]
Bio-ProtocolBrightfield microscopy is an ideal application for studying live cell systems in a minimally invasive manner. This is advantageous in long-term experiments to study dynamic cellular processes such as stress response.
Isabel Gibson +2 more
doaj +2 more sources
Leida xuebao, 2016 Sparse microwave imaging is new concept, theory and methodology of microwave imaging, which introduces the sparse signal processing theory to microwave imaging and combines them together to overcome the paradox of increasing system complexity and imaging
Zhang Zhe +3 more
doaj +2 more sources
An Autofocus Method Based on Improved Differential Confocal Microscopy in Two-Photon Lithography [PDF]
Photonics, 2023 Two-photon lithography (TPL) plays a vital role in microstructure fabrication due to its high processing accuracy and maskless characteristics. To optimize the manufacturing quality deteriorated by the defocus of the substrate, an autofocus approach ...
Zhenyu Yang +4 more
doaj +2 more sources
Precision autofocus in optical microscopy with liquid lenses controlled by deep reinforcement learning [PDF]
Microsystems & NanoengineeringMicroscopic imaging is a critical tool in scientific research, biomedical studies, and engineering applications, with an urgent need for system miniaturization and rapid, precision autofocus techniques.
Jing Zhang +5 more
doaj +2 more sources
GMANet: Gradient Mask Attention Network for Finding Clearest Human Fecal Microscopic Image in Autofocus Process [PDF]
Applied Sciences, 2021 The intelligent recognition of formed elements in microscopic images is a research hotspot. Whether the microscopic image is clear or blurred is the key factor affecting the recognition accuracy.
Xiangzhou Wang +5 more
doaj +2 more sources
Deep Learning-Assisted Autofocus for Aerial Cameras in Maritime Photography [PDF]
Journal of ImagingTo address the unreliable autofocus problem of drone-mounted visible-light aerial cameras in low-contrast maritime environments, this paper proposes an autofocus system that combines deep-learning-based coarse focusing with traditional search-based fine ...
Haiying Liu +5 more
doaj +2 more sources
Deep Learning-Based Dynamic Region of Interest Autofocus Method for Grayscale Image [PDF]
SensorsIn the field of autofocus for optical systems, although passive focusing methods are widely used due to their cost-effectiveness, fixed focusing windows and evaluation functions in certain scenarios can still lead to focusing failures.
Yao Wang +3 more
doaj +2 more sources
A wavelet-guided transformer approach for autofocus in brightfield biological microscopy [PDF]
Scientific ReportsAutofocus plays a crucial role in Biological Microscopy by ensuring image clarity and improving operational efficiency. However, mainstream brightfield biological microscopes still rely on conventional autofocus methods, which suffer from poor real-time ...
Wangka Yang +3 more
doaj +2 more sources
Mixture Detection Using a Deep-UV Raman-LIBS Autofocus-Based Compact Chemical Spectroscopic Sensor. [PDF]
ACS OmegaSurampudi A +5 more
europepmc +2 more sources