Results 51 to 60 of about 4,867 (182)

UC2‐ESP: A general‐purpose framework for open‐source microscopy control

Journal of Microscopy, EarlyView.
Abstract Building the optical setup for investigating biological questions comes with challenges. A major such challenge is setting up and synchronizing the control of multiple hardware components such as stages, cameras and lasers. With UC2‐ESP, we present a low‐cost electronics system powered by the ESP32 microcontroller (∼$10), designed as an ...
Benedict Diederich, Ingo Fuchs, Haoran Wang, Holger Bierhoff, Christian Kuttke, Rainer Heintzmann   +5 more
wiley   +1 more source

MCA: A Multichannel Approach to SAR Autofocus [PDF]

IEEE Transactions on Image Processing, 2009
We present a new noniterative approach to synthetic aperture radar (SAR) autofocus, termed the multichannel autofocus (MCA) algorithm. The key in the approach is to exploit the multichannel redundancy of the defocusing operation to create a linear subspace, where the unknown perfectly focused image resides, expressed in terms of a known basis formed ...
Robert L. Morrison Jr., Minh N. Do, David C. Munson Jr.   +2 more
openaire   +4 more sources

Non-Iterative Autofocus Method for High-Resolution SAR Time-Domain Imaging Based on Multi-Subimage 2D-PGA

Remote Sensing
Traditional motion compensation (MoCo) methods for high-resolution synthetic aperture radar (SAR) rely on iterative processing between imaging and MoCo, incurring heavy computational overhead and barely meeting fast imaging requirements. To address this,
Yuhui Deng, Wangwei Li, Panpan Zhao, Guang-Cai Sun, Yuqi Wang, Jixiang Xiang, Mengdao Xing   +6 more
doaj   +1 more source

Quantitative evaluation of LED‐based optical autofocus module

Journal of Microscopy, EarlyView.
Abstract We report an improved version of the open‐source optical autofocus (OAF) module (openAF) for light microscopy, replacing the superluminescent diode (SLD) with a multimode‐optical fibre‐coupled LED as a more accessible AF module light source. We also present a method for independently quantifying AF system performance using 2D autocorrelation ...
S. Habte, S. Kumar, J. Lightley, E. Garcia, M. A. A. Neil, P. M. W. French   +5 more
wiley   +1 more source

An Optical Sensor for Measuring the Position and Slanting Direction of Flat Surfaces

Sensors, 2016
Automated optical inspection is a very important technique. For this reason, this study proposes an optical non-contact slanting surface measuring system. The essential features of the measurement system are obtained through simulations using the optical
Yu-Ta Chen, Yen-Sheng Huang, Chien-Sheng Liu   +2 more
doaj   +1 more source

FieldDino: Rapid In‐Field Stomatal Anatomy and Physiology Phenotyping

Plant, Cell &Environment, EarlyView.
ABSTRACT Stomatal anatomy and physiology define CO2 availability for photosynthesis and regulate plant water use. Despite being key drivers of yield and dynamic responsiveness to abiotic stresses, conventional measurement techniques of stomatal traits are laborious and slow, limiting adoption in plant breeding.
Edward Chaplin, Guy Coleman, Andrew Merchant, William Salter   +3 more
wiley   +1 more source

Robel Pole Method Can Estimate Cereal Rye Biomass to Optimize Termination Timing

Crop, Forage &Turfgrass Management, Volume 12, Issue 2, December 2026.
Abstract Fully realizing the benefits of cover crops and minimizing the yield penalty requires knowing when to terminate them. Cereal rye (Secale cereale L.) is the dominant cover crop used in the Midwest US, and previous work has shown that corn (Zea mays L.) yield penalties began to occur more frequently when cereal rye is at ∼1000 lb dry biomass ac ...
Mila V. Pessotto, Marshall D. McDaniel, Ally C. Larson, Mark A. Licht   +3 more
wiley   +1 more source

Autofocus Layer for Semantic Segmentation [PDF]

, 2018
We propose the autofocus convolutional layer for semantic segmentation with the objective of enhancing the capabilities of neural networks for multi-scale processing. Autofocus layers adaptively change the size of the effective receptive field based on the processed context to generate more powerful features.
Yao Qin 0001, Konstantinos Kamnitsas, Siddharth Ancha, Jay Nanavati, Garrison W. Cottrell, Antonio Criminisi, Aditya V. Nori   +6 more
openaire   +2 more sources

3D positioning and autofocus of the particle field based on the depth-from-defocus method and the deep networks

Machine Learning: Science and Technology, 2023
Accurate three-dimensional positioning of particles is a critical task in microscopic particle research, with one of the main challenges being the measurement of particle depths. In this paper, we propose a method for detecting particle depths from their
Xiaolei Zhang, Zhao Dong, Huaying Wang, Xiaohui Sha, Wenjian Wang, Xinyu Su, Zhengsheng Hu, Shaokai Yang   +7 more
doaj   +1 more source

Phenotyping Common Bean (Phaseolus vulgaris L.) Tolerance to Fomesafen and Imazamox Using Visible RGB Imaging Integrated With Multivariate Analysis

Legume Science, Volume 8, Issue 3, September 2026.
ABSTRACT The common bean is vital for food security, but its productivity is often limited by competition with weeds, requiring the use of herbicides. The response of genotypes to herbicides such as fomesafen and imazamox is variable, and the traditional evaluation of phytotoxicity through visual methods is subjective.
Carlos Zacarias Joaquim Jr., Luan Tiago dos Santos Carbonari, Carina Lopes Djadjo, Charlene Barboza Bussolaro, Mauro Bitencourt de Souza, Vagner Muniz de Oliveira, Maria Fernanda Campos Rodrigues, Fernanda Cristina Schutz Gislon, Samara Campos do Nascimento, Aires da Costa, Jorge Luis Tejada, Paulo Henrique Cerutti, Altamir Frederico Guidolin, Jefferson Luís Meirelles Coimbra   +13 more
wiley   +1 more source