An Underwater Polarization Imaging Technique Based on the Construction and Decomposition of the Low-Rank and Sparse Matrix in Stokes Space for Polarization State Imaging [PDF]
SensorsTraditional underwater polarization imaging methods can only provide clear degree of polarization (DOP) and intensity images of the object but cannot provide images of the polarization state of the object.
Pengfeng Liu +6 more
doaj +4 more sources
Detection and Classification of Cotton Foreign Fibers Based on Polarization Imaging and Improved YOLOv5 [PDF]
Sensors, 2023 It is important to detect and classify foreign fibers in cotton, especially white and transparent foreign fibers, to produce subsequent yarn and textile quality.
Rui Wang +8 more
doaj +2 more sources
Three Dimensional Shape Reconstruction via Polarization Imaging and Deep Learning [PDF]
Sensors, 2023 Deep-learning-based polarization 3D imaging techniques, which train networks in a data-driven manner, are capable of estimating a target’s surface normal distribution under passive lighting conditions.
Xianyu Wu +4 more
doaj +2 more sources
Experimental Study on Bottom-Up Detection of Underwater Targets Based on Polarization Imaging [PDF]
Sensors, 2022 Previous studies on the polarization imaging of underwater targets mainly focused on top-down detection; however, the capacities of bottom-up detection were poorly known.
Tianfeng Pan +6 more
doaj +2 more sources
Terahertz polarization imaging
Optics Letters, 2005 We present a new method to measure the polarization state of a terahertz pulse by using a modified electro-optic sampling setup. To illustrate the power of this method, we show two examples in which the knowledge of the polarization of the terahertz pulse is essential for interpreting the results: spectroscopy measurements on polystyrene foam and ...
Van der Valk, N.C.J. (author) +2 more
openaire +7 more sources
Enhanced Rail Surface Defect Segmentation Using Polarization Imaging and Dual-Stream Feature Fusion [PDF]
SensorsRail surface defects pose significant risks to the operational efficiency and safety of industrial equipment. Traditional visual defect detection methods typically rely on high-quality RGB images; however, they struggle in low-light conditions due to ...
Yucheng Pan +5 more
doaj +2 more sources
Detection of Small Targets in Photovoltaic Cell Defect Polarization Imaging Based on Improved YOLOv7 [PDF]
Applied SciencesA photovoltaic cell defect polarization imaging small target detection method based on improved YOLOv7 is proposed to address the problem of low detection accuracy caused by insufficient feature extraction ability in the process of small target defect ...
Haixia Wang +5 more
doaj +2 more sources
Analysis of multispectral polarization imaging image information based on micro-polarizer array. [PDF]
PLoS OneAs a new detection technology, polarization imaging is of great significance in the field of target detection. At present, polarization imaging technology usually adopts visible light polarization imaging. The technique is difficult to image the target in complex background due to its narrow working spectrum and short detection distance.
Fu Q +7 more
europepmc +4 more sources
Biologically Inspired Polarization-difference Imaging
27th European Microwave Conference and Exhibition, 1997 Without appropriate instruments, human eyes cannot effectively sense the polarization of light. However, it is well known that the eyes of certain animal species are sensitive to light's polarization. Motivated and inspired by hypotheses about the polarization sensitivity of the visual systems of such animals, our research group has been studying and ...
Nader Engheta +3 more
openaire +2 more sources
Multi-Angle Polarization Index System for Pollen Type Bioaerosol Recognition
Frontiers in Physics, 2022 In this work, we propose a high-throughput online identification method of bioaerosols based on multi-angle polarization index system (MAPIS). In the study, four categories and 10 subclasses of aerosol samples from biological and non-biological sources ...
Qizhi Xu +8 more
doaj +1 more source