Results 91 to 100 of about 22,214 (311)

Vectors of Locally Aggregated Centers for Compact Video Representation

open access: yes, 2015
We propose a novel vector aggregation technique for compact video representation, with application in accurate similarity detection within large video datasets.
Abbas, Alhabib   +2 more
core   +1 more source

Chiral Nanohoops as an Efficient Spin Polarization System

open access: yesAdvanced Functional Materials, EarlyView.
Chiral conjugated nanohoops with a central dibenzopentalene unit exhibit 90% spin polarization at low voltage and high conductivity. These properties make them ideal components in molecular spintronics applications. Abstract A central challenge in molecular spintronics is to achieve a high spin polarization at low operating voltages and ambient ...
Anu Gupta   +4 more
wiley   +1 more source

An Ionic Gelation Powder for Ultrafast Hemostasis and Accelerated Wound Healing

open access: yesAdvanced Functional Materials, EarlyView.
An ultrafast ionic gelation‐activated hemostatic powder (AGCL) forms a hydrogel within ≈1 s upon contact with blood‐derived calcium ions. The AGCL powder enables rapid hemorrhage control, strong tissue adhesion, and enhanced healing. The powder's pre‐crosslinked polymer network ensures high blood uptake and stability, offering effective treatment for ...
Youngju Son   +12 more
wiley   +1 more source

Vehicle Logo Recognition by Spatial-SIFT Combined with Logistic Regression [PDF]

open access: yes, 2016
An efficient recognition framework requires both good feature representation and effective classification methods. This paper proposes such a framework based on a spatial Scale Invariant Feature Transform (SIFT) combined with a logistic regression ...
Chen, R.   +4 more
core  

Passenger monitoring in moving bus video

open access: yes, 2008
In this paper, we present a novel person detection system for public transport buses tackling the problem of changing illumination conditions. Our approach integrates a stable SIFT (Scale Invariant Feature Transform) background seat modeling mechanism ...
Leoputra, Wilson S.   +2 more
core   +1 more source

Sustainable Catalyst‐Free PLG Networks: Recyclability, Biodegradability, and Functional Performance

open access: yesAdvanced Functional Materials, EarlyView.
A catalyst‐additive free covalent adaptable network is developed from star‐shaped poly(lactide‐co‐glycolide) cross‐linked with pyromellitic dianhydride, enabling internal carboxylic acid‐driven transesterification. The resulting biodegradable network exhibits mechanical robustness (Young's modulus ≈1.6 GPa), complete recyclability, rapid biodegradation
Lars Schwarzer   +2 more
wiley   +1 more source

Automatic Matching of Multi-Source Satellite Images: A Case Study on ZY-1-02C and ETM+

open access: yesApplied Sciences, 2017
The ever-growing number of applications for satellites is being compromised by their poor direct positioning precision. Existing orthoimages, such as enhanced thematic mapper (ETM+) orthoimages, can provide georeferences or improve the geo-referencing ...
Bo Wang   +3 more
doaj   +1 more source

A Novel Approach to Face Recognition using Image Segmentation based on SPCA-KNN Method [PDF]

open access: yes, 2013
In this paper we propose a novel method for face recognition using hybrid SPCA-KNN (SIFT-PCA-KNN) approach. The proposed method consists of three parts.
Benco, M.   +5 more
core   +1 more source

Fast MPEG-CDVS Encoder with GPU-CPU Hybrid Computing

open access: yes, 2017
The compact descriptors for visual search (CDVS) standard from ISO/IEC moving pictures experts group (MPEG) has succeeded in enabling the interoperability for efficient and effective image retrieval by standardizing the bitstream syntax of compact ...
Chen, Jie   +9 more
core   +1 more source

Bioinspired Polypeptide Dendrimer‐Modified Thin‐Film Composite Membranes for Selective Lithium‐Magnesium Separation with DFT Insights

open access: yesAdvanced Functional Materials, EarlyView.
We fabricated a biomimetic dendrimer‐modified thin‐film nanocomposite membrane with a coordination‐assisted ion‐selective interface. pH‐responsive polypeptide sites preferentially bind Mg2+ and promote Li+ permeation, as predicted by density functional theory calculations of metal‐ligand interactions.
Mehrasa Yassari   +7 more
wiley   +1 more source

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