Results 41 to 50 of about 44,169 (308)
The Scientific World Journal, 2013 Active contour models are used to extract object boundary from digital image, but there is poor convergence for the targets with deep concavities. We proposed an improved approach based on existing gradient vector flow methods. Main contributions of this
Jianhui Zhao +4 more
doaj +1 more source
Fuzzy Region-Based Active Contours Driven by Weighting Global and Local Fitting Energy
IEEE Access, 2019 Active contour model (ACM) has been a successful method for image segmentation. The existing ACMs poorly segment the images with intensity inhomogeneity or non-homogeneity, and the results highly depend on the initial position of the contour. To overcome
Jiangxiong Fang +4 more
doaj +1 more source
FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source
An Active Contour Model Guided by LBP Distributions [PDF]
, 2006 The use of active contours for texture segmentation seems rather attractive in the recent research, indicating that such methodologies may provide more accurate results. In this paper, a novel model for texture segmentation is presented, combining advantages of the active contour approach with texture information acquired by the Local Binary Pattern ...
Savelonas, M.A. +3 more
openaire +2 more sources
Quantitative Comparison of Deformable Models in Range Segmentation
Cybernetics and Information Technologies, 2015 In this paper we segment range images by applying three deformable models (the classical Active Contour, the adaptive active contour and the Level Set method). These three methods are used to segment images with planar and curved surface scenes. Then the
Amine Khaldi, Hayet Farida Merouani
doaj +1 more source
FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source
A Vessel Active Contour Model for Vascular Segmentation [PDF]
BioMed Research International, 2014 This paper proposes a vessel active contour model based on local intensity weighting and a vessel vector field. Firstly, the energy function we define is evaluated along the evolving curve instead of all image points, and the function value at each point on the curve is based on the interior and exterior weighted means in a local neighborhood of the ...
Yun Tian +7 more
openaire +2 more sources
FEBS Letters, EarlyView.We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley +1 more source
Comparison Between The Performance of Parametric Active Contour Models
Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017 Snakes, or active contours, are used extensively in computer vision and image processing applications, particularly to locate object boundaries. In this research, for the segmentation of anatomical structures in medical images three approaches were ...
F. A. Alwan
doaj
Noise Image Segmentation Model with Adaptive Neighborhood Based on Gradient Information [PDF]
Jisuanji gongcheng, 2018 An improved active contour model is proposed to solve the problem that most of the existing segmentation model can not take into account the segmentation accuracy of the probability noise image and the inhomogeneous image.Firstly,the new neighborhood ...
LI Gang,LI Haifang,SHANG Fangxin,GUO Hao
doaj +1 more source