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An Extended List-Mode MLEM Algorithm for 3D Compton Image Reconstruction from Multi-View Data [PDF]

open access: yesEPJ Web of Conferences, 2023
The lack of parallax in the measurements is a big challenge in 3D image reconstruction for handheld Compton cameras. Our solution to this issue is to extend the conventional list-mode maximum-likelihood expectation-maximization (LM-MLEM) 3D ...
Le Nhan   +5 more
doaj   +1 more source

HFPNet: Super Feature Aggregation Pyramid Network for Maritime Remote Sensing Small-Object Detection

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
In recent years, with the development of the maritime industry, computer vision tasks based on optical remote sensing images have gained increasing attention in the field of marine remote sensing.
Chengcheng Chen   +2 more
doaj   +1 more source

Initial Performance Analysis of the At-Altitude Radiance Ratio Method for Reflectance Conversion of Hyperspectral Remote Sensing Data

open access: yesSensors, 2022
In remote sensing, the conversion of at-sensor radiance to surface reflectance for each pixel in a scene is an essential component of many analysis tasks.
Luke J. R. DeCoffe   +5 more
doaj   +1 more source

A Vicarious Technique for Understanding and Diagnosing Hyperspectral Spatial Misregistration

open access: yesSensors, 2023
Pushbroom hyperspectral imaging (HSI) systems intrinsically measure our surroundings by leveraging 1D spatial imaging, where each pixel contains a unique spectrum of the observed materials.
David N. Conran, Emmett J. Ientilucci
doaj   +1 more source

Multi-template matching: a versatile tool for object-localization in microscopy images

open access: yesBMC Bioinformatics, 2020
Background The localization of objects of interest is a key initial step in most image analysis workflows. For biomedical image data, classical image-segmentation methods like thresholding or edge detection are typically used. While those methods perform
Laurent S. V. Thomas, Jochen Gehrig
doaj   +1 more source

High NA diffractive array illuminators and application in a multi-spot scanning microscope [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2012
Array illuminators generating spots with high NA at high efficiency are presented. They are designed via application of high-NA scalar optics methods, and implemented as periodic binary phase structures.
Hulsken B., Vossen D., Stallinga S.
doaj   +1 more source

Quantitative analysis of artificial intelligence on liver cancer: A bibliometric analysis

open access: yesFrontiers in Oncology, 2023
ObjectiveTo provide the current research progress, hotspots, and emerging trends for AI in liver cancer, we have compiled a relative comprehensive and quantitative report on the research of liver disease using artificial intelligence by employing ...
Ming Xiong   +8 more
doaj   +1 more source

Quantum digital spiral imaging [PDF]

open access: yes, 2014
We demonstrate that the combination of digital spiral imaging with high-dimensional orbital angular momentum (OAM) entanglement can be used for efficiently probing and identifying pure phase objects, where the probing light does not necessarily touch the
Chen, Lixiang   +2 more
core   +1 more source

Digital detection of exosomes by interferometric imaging [PDF]

open access: yes, 2016
Exosomes, which are membranous nanovesicles, are actively released by cells and have been attributed to roles in cell-cell communication, cancer metastasis, and early disease diagnostics.
Benussi, Luisa   +13 more
core   +2 more sources

Application of 3D modeling and fusion technology of medical image data in image teaching

open access: yesBMC Medical Education, 2021
Background We combined anatomy with imaging, transformed the 2D information of various imaging techniques into 3D information, and form the assessment system of real medical imaging cases in order to make up for the deficiencies in the current teaching ...
Quan Yuan   +11 more
doaj   +1 more source

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