A5028945187- Advanced Vision and Imaging
- Image Enhancement Techniques
- Advanced Image Processing Techniques
- Image and Signal Denoising Methods
- Advanced Image and Video Retrieval Techniques
- Advanced Image Fusion Techniques
- Caching and Content Delivery
- Video Surveillance and Tracking Methods
- Image Processing Techniques and Applications
- Advanced Data Compression Techniques
- Advanced Database Systems and Queries
- Video Coding and Compression Technologies
- Data Management and Algorithms
- Recommender Systems and Techniques
- Semantic Web and Ontologies
- Advanced Optical Imaging Technologies
- Image Retrieval and Classification Techniques
- Context-Aware Activity Recognition Systems
- Web Data Mining and Analysis
- Video Analysis and Summarization
- Medical Image Segmentation Techniques
- Distributed systems and fault tolerance
- Blind Source Separation Techniques
- Multimedia Communication and Technology
- Optical measurement and interference techniques
Chung-Ang University
2011-2024
Korea University
1996-2023
Konyang University
2020
Simon Fraser University
2009-2017
Chinese University of Hong Kong
2007-2016
Prince of Wales Hospital
2016
Oak Ridge National Laboratory
2015
Seoul National University
2005-2013
Chung Shan Medical University
2010
University of Cambridge
2010
Objective: This is the first community‐based epidemiological study examining prevalence of suicidal behaviors, their transitional pathways, and relationship with mental disorders in metropolitan China. Method: Suicidal including ideation, plans, attempts were assessed by face‐to‐face household interviews among 5201 respondents Beijing Shanghai 2001–2002. Lifetime risk factors examined using multivariate discrete‐time survival models. Results: The lifetime estimates 3.1%, 0.9%, 1.0%...
The object of this paper is to present a simple and efficient algorithm for dynamic range compression contrast enhancement digital images under the noisy environment in compressed domain. First, an image separated into illumination reflectance components. Next, component manipulated adaptively dynamics by using new content measure. Then, based on measure spectral contents contrast. computed from energy distribution across different bands discrete cosine transform (DCT) block. proposed...
The paper presents an overview of the WHO World Mental Health (WMH) Survey Initiative and summarizes recent WMH results regarding prevalence societal costs mental disorders. surveys are representative community that were carried out in 28 countries throughout world aimed at providing information to health policy makers about prevalence, burden, unmet need for treatment common Results show disorders commonly occurring all participating countries. inter-quartile range (IQR: 25(th)-75(th)...
To examine the patterns of drinking, relationship between binge alcohol abuse, and dependence, sociodemographic factors associated with problem drinking among Hong Kong Chinese.An anonymous, random telephone survey was conducted on 9860 Chinese adults from April to June, 2006.The age-adjusted prevalence amongst men for 14.4% 5.3% males being abusers 2.3% dependent alcohol. The corresponding figures women were all lower at 3.6%, 1.4%, 0.7%, respectively. Younger age groups showed highest...
Outdoor images are subject to degradation regarding contrast and color because atmospheric particles scatter incoming light a camera. Existing haze models that employ model-based dehazing methods cannot avoid the artifacts. These artifacts include distortion overenhancement around object boundaries of incorrect transmission estimation from depth error in skyline wrong information, especially bright objects. To overcome this problem, we present novel optimization-based algorithm combines...
Undisturbed interaction is essential to provide immersive AR environments. There have been a lot of approaches interact with VEs (virtual environments) so far, especially in hand metaphor. When the user's hands are being used for hand-based work such as maintenance and repair, necessity alternative technique has arisen. In recent research, hands-free gaze information adopted perform original actions concurrence interaction. [3, 4]. little progress on that still at pilot study laboratory...
This study presents a novel image‐naturalness restoration for the purpose of achieving better image quality with respect to human visual system. Specifically, authors suppress artefacts around edges using gradient components. They also appropriately enhance brightness an adaptive gamma correction. In particular, they simply create mapping curve adjust contrast, and then perform contrast enhancement. Experimental results demonstrate that proposed algorithm outperforms other state‐of‐the‐art...
This paper presents a low-light video restoration algorithm using similar patches among temporally adjacent frames. The proposed artifact-free consists of three steps: 1) brightness enhancement frames and adaptive accumulation; 2) improved color assignment to reduce distortion; 3) image fusion for saturation reduction the guide map. step guarantees not produce any undesired artifacts because searching most given set steps enable fully automatic preservation average control. Experimental...
Background This is the first cross-national study of intermittent explosive disorder (IED). Method A total 17 face-to-face cross-sectional household surveys adults were conducted in 16 countries ( n = 88 063) as part World Mental Health Surveys initiative. The Organization Composite International Diagnostic Interview (CIDI 3.0) assessed DSM-IV IED, using a conservative definition. Results Lifetime prevalence IED ranged across from 0.1 to 2.7% with weighted average 0.8%; 0.4 and 0.3% met...
The images captured by real cameras often suffer from lens distortion which is a nonlinear and radial distortion. In this work, we present method to correct the caused camera lens. particular, discuss framework determine vectors function directly without employing approximation approach causes incorrect warping problem. proposed entirely non-iterative, therefore computationally efficient. We also compute center of distortion, important obtain optimal results. accuracy robustness system are...
As context is acknowledged as an important factor that can affect users' preferences, many researchers have worked on improving the quality of recommender systems by utilizing context. However, incorporating into not a simple task in influence item preferences various ways depending application. In this paper, we propose novel method for context-aware recommendation, which incorporates several features ranking model. By decomposing query, types reflect contextual effects. addition, present...
Age-related macular degeneration (AMD) is a global health challenge. AMD causes visual impairment and blindness, particularly in older individuals. This multifaceted disease progresses through various stages, from asymptomatic dry to advanced wet AMD, driven by factors including inflammation oxidative stress. Current treatments are effective mainly for AMD; the therapeutic options limited. Photobiomodulation (PBM) using low-energy light red-to-near-infrared range promising treatment retinal...
This paper presents a neural network-based method to generate multiple images with different exposures from single input low dynamic range (LDR) image for improved high (HDR) imaging. The proposed algorithm consists of three steps: 1) 2-D histogram estimation; 2) LDR and 3) generation an optimal set differently exposed images. first generates features by estimating patched-based histogram. extracted are used in layer the network, which plays role select A is generated using curvature-based...
Image smoothing has been used for image segmentation, reconstruction, object classification, and 3D content generation. Several approaches have at the pre-processing step to retain critical edge, while removing noise small details. However, they limited performance, especially in details discrete regions. Therefore, provide fast accurate smoothing, we propose an effective scheme that uses a weighted combination of gradient, Laplacian, diagonal derivatives smoothed image. In addition, reduce...
In this paper, we propose a novel method for estimating the transmission and removing haze from single image. This is based on observation that property of widely spread. Thus its estimated should be smoothly changed over scene. We employed local entropy log function atmospheric light smooth transmission. Experimental results demonstrated proposed can applied efficiently to outdoor vision applications or devices including cameras camcorders with low complexity.
Background: Psoriasis is a chronic inflammatory skin disease that affects approximately 1~3% of the general population.Objective: We performed cDNA microarray analysis with using dendrimer labelling method to investigate gene expression profile in peripheral blood mononuclear cells (PBMCs) psoriatic patients.Methods: The 5 patients psoriasis and 8 control subjects were used analyses psoriasis.Results: identified 212 differentially expressed genes showed at least two-fold induction and/or...
To realize a practical context-aware system, we should be clearly aware of important issues in systems. In this paper, review wide range existing researches and the history We derive technical on realizing services based explain them. addition, describe seven service scenarios discuss related issues. believe that derived from our survey proposed will used as useful reference for future researches.
This paper presents a normalized human height estimation algorithm using an uncalibrated camera. To estimate the height, proposed detects moving object and performs tracking-based automatic camera calibration. The method consists of three steps: (i) detection tracking, (ii) calibration, (iii) error correction. automatically calibrates by detecting humans estimates can be applied to object-based video surveillance systems digital forensic.
In a previous search for the differentially expressed genes in keratinocyte differentiation, we identified neutrophil gelatinase-associated lipocalin (NGAL) as calcium-induced gene.In this study, further verified expression of NGAL cultured keratinocytes well several skin diseases.Reverse transcription-polymerase chain reaction (RT-PCR), Western blot, and ELISA clearly showed that was markedly increased differentiation vitro.However, our report, not detected normal tissue except hair...