Results 11 to 20 of about 155,901 (241)

Image Feature Extraction and Matching of Augmented Solar Images in Space Weather

open access: yesKongjian kexue xuebao, 2023
Augmented solar images were used to research the adaptability of four representative image extraction and matching algorithms in space weather domain.
WANG Rui, BAO Lili, CAI Yanxia
doaj   +1 more source

An Improved ASIFT Image Feature Matching Algorithm Based on POS Information

open access: yesSensors, 2022
The affine scale-invariant feature transform (ASIFT) algorithm is a feature extraction algorithm with affinity and scale invariance, which is suitable for image feature matching using unmanned aerial vehicles (UAVs).
Junchai Gao, Zhen Sun
doaj   +1 more source

SIFT-GVF-based lung edge correction method for correcting the lung region in CT images.

open access: yesPLoS ONE, 2023
Juxtapleural nodules were excluded from the segmented lung region in the Hounsfield unit threshold-based segmentation method. To re-include those regions in the lung region, a new approach was presented using scale-invariant feature transform and ...
Xin Li   +4 more
doaj   +2 more sources

pi-SIFT: A Photometric and Scale Invariant Feature Transform [PDF]

open access: yes2008 19th International Conference on Pattern Recognition, 2008
In this chapter, we presented a novel photometric quasi-invariant SIFT descriptor, PHI-SIFT, which is insensitive to photometric variations in addition to geometric invariance. The dichromatic reflection model is used for extracting photometric quasi-invariant features and the similar approach to the SIFT is used for obtaining geometric invariance. For
Moon-Hong Baeg   +3 more
openaire   +3 more sources

Pemanfaatan Scale Invariant Feature Transform Berbasis Saliency untuk Klasifikasi Sel Darah Putih

open access: yesJuTISI (Jurnal Teknik Informatika dan Sistem Informasi), 2021
White blood cells are cells that makeup blood components that function to fight various diseases from the body (immune system). White blood cells are divided into five types, namely basophils, eosinophils, neutrophils, lymphocytes, and monocytes ...
Yohannes Yohannes   +2 more
doaj   +1 more source

Practical challenges in data‐driven interpolation: Dealing with noise, enforcing stability, and computing realizations

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary In this contribution, we propose a detailed study of interpolation‐based data‐driven methods that are of relevance in the model reduction and also in the systems and control communities. The data are given by samples of the transfer function of the underlying (unknown) model, that is, we analyze frequency‐response data.
Quirin Aumann, Ion Victor Gosea
wiley   +1 more source

Unsupervised Video Shot Detection Using Clustering Ensemble with a Color Global Scale-Invariant Feature Transform Descriptor

open access: yesEURASIP Journal on Image and Video Processing, 2008
Scale-invariant feature transform (SIFT) transforms a grayscale image into scale-invariant coordinates of local features that are invariant to image scale, rotation, and changing viewpoints.
Hong Yi   +3 more
doaj   +2 more sources

FPGA-Based Hardware Design for Scale-Invariant Feature Transform

open access: yesIEEE Access, 2018
This paper proposes a novel hardware design method of scale-invariant feature transform (SIFT) algorithm for implementation on field-programmable gate array (FPGA).
Shih-An Li   +4 more
doaj   +1 more source

Improving the matching precision of SIFT [PDF]

open access: yes, 2014
International audienceMatching precision of scale-invariant feature transform (SIFT) is evaluated and improved in this paper. The aim of the paper is not to invent a new feature detector more invariant than the others.
Monasse, Pascal   +2 more
core   +3 more sources

Automated identification of Lauraceae by scale-invariant feature transform [PDF]

open access: yesJournal of Wood Science, 2017
An image dataset of the cross-sectional optical micrographs of the Lauraceae species including 39 species in 11 genera, capturing at least one full annual ring, was investigated by scale-invariant feature transform (SIFT), a computer vision-based feature extraction algorithm. We found an image of 900 × 900-pixel size at a pixel resolution of ca.
Kayoko Kobayashi   +4 more
openaire   +2 more sources

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