Results 91 to 100 of about 345,447 (283)

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Learning Segmentation Masks with the Independence Prior

, 2018
An instance with a bad mask might make a composite image that uses it look fake. This encourages us to learn segmentation by generating realistic composite images.
Chen, Yimin, Dai, Songmin, Li, Xiaoqiang, Tong, Weiqin, Wang, Lu, Wu, Pin   +5 more
core   +1 more source

Instance Consistency Regularization for Semi-Supervised 3D Instance Segmentation

IEEE Transactions on Pattern Analysis and Machine Intelligence
Large-scale datasets with point-wise semantic and instance labels are crucial to 3D instance segmentation but also expensive. To leverage unlabeled data, previous semi-supervised 3D instance segmentation approaches have explored self-training frameworks, which rely on high-quality pseudo labels for consistency regularization.
Yizheng Wu, Zhiyu Pan, Kewei Wang, Xingyi Li, Jiahao Cui, Liwen Xiao, Guosheng Lin, Zhiguo Cao   +7 more
openaire   +3 more sources

Semi-convolutional Operators for Instance Segmentation [PDF]

, 2018
Object detection and instance segmentation are dominated by region-based methods such as Mask RCNN. However, there is a growing interest in reducing these problems to pixel labeling tasks, as the latter could be more efficient, could be integrated seamlessly in image-to-image network architectures as used in many other tasks, and could be more accurate
David Novotny, Samuel Albanie, Diane Larlus, Andrea Vedaldi   +3 more
openaire   +3 more sources

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Training Fully Convolutional Neural Networks for Lightweight, Non-Critical Instance Segmentation Applications

Applied Sciences
Augmented reality applications involving human interaction with virtual objects often rely on segmentation-based hand detection techniques. Semantic segmentation can then be enhanced with instance-specific information to model complex interactions ...
Miguel Veganzones, Ana Cisnal, Eusebio de la Fuente, Juan Carlos Fraile   +3 more
doaj   +1 more source

Faster Training of Mask R-CNN by Focusing on Instance Boundaries

, 2019
We present an auxiliary task to Mask R-CNN, an instance segmentation network, which leads to faster training of the mask head. Our addition to Mask R-CNN is a new prediction head, the Edge Agreement Head, which is inspired by the way human annotators ...
Siems, Julien N., Zimmermann, Roland S.
core   +1 more source

PointInst3D: Segmenting 3D Instances by Points

, 2022
The current state-of-the-art methods in 3D instance segmentation typically involve a clustering step, despite the tendency towards heuristics, greedy algorithms, and a lack of robustness to the changes in data statistics. In contrast, we propose a fully-convolutional 3D point cloud instance segmentation method that works in a per-point prediction ...
He, Tong, Yin, Wei, Shen, Chunhua, Hengel, Anton van den   +3 more
openaire   +2 more sources

The neural crest‐associated gene ERRFI1 is involved in melanoma progression and resistance toward targeted therapy

Molecular Oncology, EarlyView.
ERRFI1, a neural crest (NC)‐associated gene, was upregulated in melanoma and negatively correlated with the expression of melanocytic differentiation markers and the susceptibility of melanoma cells toward BRAF inhibitors (BRAFi). Knocking down ERRFI1 significantly increased the sensitivity of melanoma cells to BRAFi.
Nina Wang, Qian Sun, Daniel Novak, Lei Zhu, Juliane Poelchen, Tamara Steinfass, Yiman Wang, Viktor Umansky, Jochen Utikal   +8 more
wiley   +1 more source

Budget-aware Semi-Supervised Semantic and Instance Segmentation [PDF]

, 2019
Methods that move towards less supervised scenarios are key for image segmentation, as dense labels demand significant human intervention. Generally, the annotation burden is mitigated by labeling datasets with weaker forms of supervision, e.g.
Bellver, Miriam, Giro-i-Nieto, Xavier, Salvador, Amaia, Torres, Jordi   +3 more
core   +1 more source