1,388 research outputs found
FreDSNet: Joint Monocular Depth and Semantic Segmentation with Fast Fourier Convolutions
In this work we present FreDSNet, a deep learning solution which obtains
semantic 3D understanding of indoor environments from single panoramas.
Omnidirectional images reveal task-specific advantages when addressing scene
understanding problems due to the 360-degree contextual information about the
entire environment they provide. However, the inherent characteristics of the
omnidirectional images add additional problems to obtain an accurate detection
and segmentation of objects or a good depth estimation. To overcome these
problems, we exploit convolutions in the frequential domain obtaining a wider
receptive field in each convolutional layer. These convolutions allow to
leverage the whole context information from omnidirectional images. FreDSNet is
the first network that jointly provides monocular depth estimation and semantic
segmentation from a single panoramic image exploiting fast Fourier
convolutions. Our experiments show that FreDSNet has similar performance as
specific state of the art methods for semantic segmentation and depth
estimation. FreDSNet code is publicly available in
https://github.com/Sbrunoberenguel/FreDSNetComment: 7 pages, 5 figures, 3 table
Multi-label affordance mapping from egocentric vision
Accurate affordance detection and segmentation with pixel precision is an
important piece in many complex systems based on interactions, such as robots
and assitive devices. We present a new approach to affordance perception which
enables accurate multi-label segmentation. Our approach can be used to
automatically extract grounded affordances from first person videos of
interactions using a 3D map of the environment providing pixel level precision
for the affordance location. We use this method to build the largest and most
complete dataset on affordances based on the EPIC-Kitchen dataset, EPIC-Aff,
which provides interaction-grounded, multi-label, metric and spatial affordance
annotations. Then, we propose a new approach to affordance segmentation based
on multi-label detection which enables multiple affordances to co-exists in the
same space, for example if they are associated with the same object. We present
several strategies of multi-label detection using several segmentation
architectures. The experimental results highlight the importance of the
multi-label detection. Finally, we show how our metric representation can be
exploited for build a map of interaction hotspots in spatial action-centric
zones and use that representation to perform a task-oriented navigation.Comment: International Conference on Computer Vision (ICCV) 202
Randomized, double-blind, three-arm, parallel-group study to compare the efficacy and safety of a single dose of 100 and 200 mg of mifepristone for cervical ripening in term pregnancies
Background: Mifepristone is an antiprogestin developed to antagonize the action of progesterone by inhibiting its receptors. It has had a recognized role in the medical termination of early pregnancy, reduction in the volume of uterine fibroids and endometriosis symptoms. A new indication for labor induction and cervical ripening in has been proposed. The objective was to compare the efficacy and safety of mifepristone 100 and 200 mg with placebo for cervical ripening in term pregnancies.Methods: Double-blind, placebo-controlled trial of 90 term pregnancy women randomly assigned to receive orally tablet of 100 mg and 200 mg mifepristone or placebo. Efficacy was assessed by measuring changes in cervical ripening according to Bishop 72 hours after treatment. Statistical analysis was using the t-student test and the chi-square test. The relative risk (RR) was determined with a 95% confidence interval.Results: The bishop score and the number of contractions at 48 hours in the group of 200mg of mifepristone presented a significantly higher mean value in relation to the placebo (p=0.04). At 72 hours, cervical length showed a significant difference (p<0.01) in both mifepristone groups compared to the placebo group. Also, at 72 hours a significant increase in the mean duration of contractions was demonstrated in the 100 mg mifepristone group.Conclusions: There was a significant increase in Bishop's score for the 200 mg mifepristone group probably due to a significant increase in contractions at 24 hours. No differences were observed between groups in adverse events
Portable Multi-Hypothesis Monte Carlo Localization for Mobile Robots
Self-localization is a fundamental capability that mobile robot navigation
systems integrate to move from one point to another using a map. Thus, any
enhancement in localization accuracy is crucial to perform delicate dexterity
tasks. This paper describes a new location that maintains several populations
of particles using the Monte Carlo Localization (MCL) algorithm, always
choosing the best one as the sytems's output. As novelties, our work includes a
multi-scale match matching algorithm to create new MCL populations and a metric
to determine the most reliable. It also contributes the state-of-the-art
implementations, enhancing recovery times from erroneous estimates or unknown
initial positions. The proposed method is evaluated in ROS2 in a module fully
integrated with Nav2 and compared with the current state-of-the-art Adaptive
ACML solution, obtaining good accuracy and recovery times.Comment: Submission for ICRA 202
Commencement of flash glucose monitoring is associated with a decreased rate of depressive disorders among persons with diabetes (FLARE-NL7)
INTRODUCTION: Depressive disorders are more common among persons with diabetes, as compared with persons without diabetes. The burden of glucose management is known to associate with depressive symptoms. This study aims to assess the effects of commencement of FreeStyle Libre flash glucose monitoring (FSL-FGM) on the mental health status of persons with diabetes. RESEARCH DESIGN AND METHODS: Post-hoc analysis of data from a 1-year prospective nationwide FSL-FGM registry. Participants who used FSL-FGM for 12 months and completed the 12-Item Short Form Health Survey version 2 (SF-12v2) questionnaires at baseline, 6 and 12 months were included. An SF-12v2 Mental Component Score (MCS) of ≤45 was used as a cut-off to discriminate between persons with and without a depressive disorder. RESULTS: A total of 674 patients were included with a mean age of 48.2 (±15.8) years, 51.2% men, 78.2% type 1 diabetes and baseline HbA1c 62.8 (±13.4) mmol/mol (7.9±1.2%). At baseline, 235 (34.9%) persons had an SF-12 MCS ≤45 while after 6 and 12 months these numbers decreased: 202 (30.0%, p<0.01) and 173 (25.7%, p<0.01). Overall, MCS improved from 48.5 at baseline to 50.7 after 6 months and 51.3 after 12 months. In multivariable regression analysis, age and MCS at baseline were associated with improvement of MCS after 12 months of FSL-FGM use. CONCLUSIONS: This analysis suggests that use of FSL-FGM is associated with a decreased rate of depressive disorders among persons with diabetes. Future studies are needed to corroborate these findings
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