Results 11 to 20 of about 3,396,344 (245)

TranSpec3D: A Novel Measurement Principle to Generate A Non-Synthetic Data Set of Transparent and Specular Surfaces without Object Preparation

open access: yesSensors, 2023
Estimating depth from images is a common technique in 3D perception. However, dealing with non-Lambertian materials, e.g., transparent or specular, is still nowadays an open challenge.
Christina Junger   +4 more
doaj   +1 more source

Image quality and segmentation [PDF]

open access: yesMedical Imaging 2018: Image-Guided Procedures, Robotic Interventions, and Modeling, 2018
Algorithms for image segmentation (including object recognition and delineation) are influenced by the quality of object appearance in the image and overall image quality. However, the issue of how to perform segmentation evaluation as a function of these quality factors has not been addressed in the literature.
Drew A. Torigian   +7 more
openaire   +3 more sources

3D whole-heart noncontrast coronary MR angiography based on compressed SENSE technology: a comparative study of conventional SENSE sequence and coronary computed tomography angiography

open access: yesInsights into Imaging, 2023
Key points The compressed SENSE could significantly shorten the scan time in NCMRA. The image quality tended to decrease with the decrease in scan time. The image quality tended to decrease with the decrease in scan time.
Yang Zhang   +12 more
doaj   +1 more source

OHO: A Multi-Modal, Multi-Purpose Dataset for Human-Robot Object Hand-Over

open access: yesSensors, 2023
In the context of collaborative robotics, handing over hand-held objects to a robot is a safety-critical task. Therefore, a robust distinction between human hands and presented objects in image data is essential to avoid contact with robotic grippers. To
Benedict Stephan   +5 more
doaj   +1 more source

Dual-layer dual-energy CT for improving differential diagnosis of squamous cell carcinoma from adenocarcinoma at gastroesophageal junction

open access: yesFrontiers in Oncology, 2022
ObjectiveTo examine the clinical values of dual-energy CT parameters derived from dual-layer spectral detector CT (SDCT) in the differential diagnosis of squamous cell carcinoma (SCC) and adenocarcinoma (AC) of the gastroesophageal junction (GEJ ...
Meihong Wu   +8 more
doaj   +1 more source

Image quality wheel [PDF]

open access: yesJournal of Electronic Imaging, 2019
We have collected a large dataset of subjective image quality “*nesses,” such as sharpness or colorfulness. The dataset comes from seven studies and contains 39,415 quotations from 146 observers who have evaluated 62 scenes either in print images or on display.
Häkkinen Jukka   +2 more
openaire   +3 more sources

Enhanced Contactless Vital Sign Estimation from Real-Time Multimodal 3D Image Data

open access: yesJournal of Imaging, 2020
The contactless estimation of vital signs using conventional color cameras and ambient light can be affected by motion artifacts and changes in ambient light.
Chen Zhang   +4 more
doaj   +1 more source

One-Shot Distributed Generalized Eigenvalue Problem (DGEP): Concept, Algorithm and Experiments

open access: yesApplied Sciences, 2022
This paper focuses on the design of a distributed algorithm for generalized eigenvalue problems (GEPs) in one-shot communication. Since existing distributed methods for eigenvalue decomposition cannot be applied to GEP, a general one-shot distributed GEP
Kexin Lv   +4 more
doaj   +1 more source

Contactless heart rate measurement in newborn infants using a multimodal 3D camera system

open access: yesFrontiers in Pediatrics, 2022
Newborns and preterm infants require accurate and continuous monitoring of their vital parameters. Contact-based methods of monitoring have several disadvantages, thus, contactless systems have increasingly attracted the neonatal communities' attention ...
Libor Svoboda   +6 more
doaj   +1 more source

Multispectral Imaging Flow Cytometry with Spatially and Spectrally Resolving Snapshot-Mosaic Cameras for the Characterization and Classification of Bioparticles

open access: yesMicromachines, 2022
In the development and optimization of biotechnological cultivation processes the continuous monitoring through the acquisition and interpretation of spectral and morphological properties of bioparticles are challenging. There is therefore a need for the
Paul-Gerald Dittrich   +4 more
doaj   +1 more source

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