Results 21 to 30 of about 1,446,341 (290)

UNLABELED SELECTED SAMPLES IN FEATURE EXTRACTION FOR CLASSIFICATION OF HYPERSPECTRAL IMAGES WITH LIMITED TRAINING SAMPLES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
Feature extraction plays a key role in hyperspectral images classification. Using unlabeled samples, often unlimitedly available, unsupervised and semisupervised feature extraction methods show better performance when limited number of training samples ...
A. Kianisarkaleh   +2 more
doaj   +1 more source

Face Detection with Effective Feature Extraction [PDF]

open access: yes, 2010
There is an abundant literature on face detection due to its important role in many vision applications. Since Viola and Jones proposed the first real-time AdaBoost based face detector, Haar-like features have been adopted as the method of choice for ...
C. Huang   +10 more
core   +1 more source

Plant leaf tooth feature extraction.

open access: yesPLoS ONE, 2019
Leaf tooth can indicate several systematically informative features and is extremely useful for circumscribing fossil leaf taxa. Moreover, it can help discriminate species or even higher taxa accurately.
Hu Wang   +4 more
doaj   +1 more source

A generic optimising feature extraction method using multiobjective genetic programming [PDF]

open access: yes, 2011
In this paper, we present a generic, optimising feature extraction method using multiobjective genetic programming. We re-examine the feature extraction problem and show that effective feature extraction can significantly enhance the performance of ...
Rockett, P.I, Zhang, Y.
core   +1 more source

Fingerprint Feature Extraction for Indoor Localization

open access: yesSensors, 2021
This paper proposes a fingerprint-based indoor localization method, named FPFE (fingerprint feature extraction), to locate a target device (TD) whose location is unknown. Bluetooth low energy (BLE) beacon nodes (BNs) are deployed in the localization area
Jehn-Ruey Jiang   +2 more
doaj   +1 more source

Advancements in Research on Micro-motion Feature Extraction in the Terahertz Region

open access: yesLeida xuebao, 2018
With years of development and accumulation, a considerable amount of research has focused on micro-motion, an important auxiliary feature in radar target detection and recognition. With the recent rise of terahertz, micro-motion feature extraction in the
Yang Qi   +3 more
doaj   +1 more source

Feature Extraction in Speechreading

open access: yesJournal of Software, 2010
To solve the problem of feature extraction in speechreading, several appearance-based feature extraction method are compared and a new improved LDA algorithm is proposed in this paper. I n speech or speechreading recognition application, Linear Discriminant Analysis (LDA) usually choose syllable 、 HMM state or other units as class ...
Jun He, Hua Zhang
openaire   +1 more source

Feature Extraction for Finger-Vein-Based Identity Recognition

open access: yesJournal of Imaging, 2021
This paper aims to provide a brief review of the feature extraction methods applied for finger vein recognition. The presented study is designed in a systematic way in order to bring light to the scientific interest for biometric systems based on finger ...
George K. Sidiropoulos   +3 more
doaj   +1 more source

Extraction of Features in EEG

open access: yesJournal of Robotics and Mechatronics, 1997
We take various information from the outside world into our brain by moving our eyes in every direction and sounds EEG contain basic rhythms of the brain, such as alpha waves, and components, such as myoelectric potentials. The results of the simulation indicated that the use of multiple windows would raise the accuracy in the detection of time delays ...
Ichiro Hamamoto   +3 more
openaire   +1 more source

An Algebra for Feature Extraction [PDF]

open access: yesProceedings of the 55th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), 2017
Though feature extraction is a necessary first step in statistical NLP, it is often seen as a mere preprocessing step. Yet, it can dominate computation time, both during training, and especially at deployment. In this paper, we formalize feature extraction from an algebraic perspective.
openaire   +1 more source

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