Results 31 to 40 of about 133,249 (181)

A Novel Parameter-Variabled and Coupled Chaotic System and Its Application in Image Encryption with Plaintext-Related Key Concealment

Entropy
The design of a chaotic system and pseudo-random sequence generation method with excellent performance and its application in image encryption have always been attractive and challenging research fields.
Zuxi Wang, Siyang Wang, Zhong Chen, Boyun Zhou   +3 more
doaj   +1 more source

A Cuboid Bi-Level Log Operator for Action Classification

IEEE Access, 2018
We propose a 3-D cuboid bi-level Laplacian-of-Gaussian (CBLoG) operator with high speed and invariant space-time scale for detecting abrupt changes of signals in videos.
Kaibo Yao, Nong Sang, Changxin Gao
doaj   +1 more source

Imaging Diagnostics Coupled with Non-Invasive and Micro-Invasive Analyses for the Restoration of Ethnographic Artifacts from French Polynesia

Heritage, 2022
In this paper, two different objects from the ethnographic collection of the museum of the Congregation of the Sacred Hearts of Jesus and Mary (Rome), a Polynesian barkcloth (tapa) and a Polynesian headdress in feathers (pa’e ku’a), were investigated to ...
Claudia Colantonio, Luca Lanteri, Alessandro Ciccola, Ilaria Serafini, Paolo Postorino, Erminia Censorii, Doinita Rotari, Claudia Pelosi   +7 more
doaj   +1 more source

Multispectral Photogrammetry

Digital Humanities in the Nordic and Baltic Countries Publications, 2019
The Ny Carlsberg Glyptotek and Rigsters 3D are exploring the potential of merging photogrammetry and multispectral imaging (MSI). MSI is a widely employed photographic method of analysis in studies of ancient polychromy. The collaboration has resulted in the first 3D model including visible-induced infrared luminescence (VIL) imaging, illustrating ...
Signe Buccarella Hedeaard, Cecilie Brøns, Iulian Drug, Pavel Saulins, Cristian Bercu, Aleksandr Jakovlev, Lars Kjær   +6 more
openaire   +1 more source

Computationally Efficient Target Classification in Multispectral Image Data with Deep Neural Networks

, 2016
Detecting and classifying targets in video streams from surveillance cameras is a cumbersome, error-prone and expensive task. Often, the incurred costs are prohibitive for real-time monitoring.
Benini, Luca, Bernath, Dominic, Cavigelli, Lukas, Magno, Michele   +3 more
core   +1 more source

Multispectral images of peach related to firmness and maturity at harvest [PDF]

, 2009
wo multispectral maturity classifications for red soft-flesh peaches (‘Kingcrest’, ‘Rubyrich’ and ‘Richlady’ n = 260) are proposed and compared based on R (red) and R/IR (red divided by infrared) images obtained with a three CCD camera (800 nm, 675 nm ...
A. Herrero, Aleixos, Aleixos, Carlomagno, Delwiche, Diaz, Diaz, Diezma-Iglesias, Du, Ferrer, García-Ramos, Gómez-Sanchís, Jahns, Kleynen, Kondo, L. Lleó, Laykin, Leemans, Leemans, Lu, Lu, M. Ruiz-Altisent, McGlone, Mehl, Merzlyak, P. Barreiro, Peng, Qing, Ruiz-Altisent, Singh, Tao, Unay, Vila, Ward, Zheng, Zude   +35 more
core   +3 more sources

A probabilistic robust mixed / fuzzy control method for hypersonic vehicles based on reliability theory

International Journal of Advanced Robotic Systems, 2018
Achieving balance between robustness and performance is always a challenge in the hypersonic vehicle flight control design. In this research, we focus on dealing with uncertainties of the fuzzy control system from the viewpoint of reliability.
Xiaomeng Yin, Xinming Li, Lei Liu, Yongji Wang, Xing Wei   +4 more
doaj   +1 more source

A Coordination Law for Multiple Air Vehicles in Distributed Communication Scenarios

Journal of Advanced Transportation, 2020
This paper proposes a consensus-based guidance methodology for multiple air vehicles to arrive at the same spot cooperatively. First, based on the Lyapunov stability theory, a guidance law with only one control parameter is proposed, and the exact ...
Zhongtao Cheng, Mao Su, Lei Liu, Bo Wang, Yongji Wang   +4 more
doaj   +1 more source

Improved Hybrid Fireworks Algorithm-Based Parameter Optimization in High-Order Sliding Mode Control of Hypersonic Vehicles

Complexity, 2018
With respect to the nonlinear hypersonic vehicle (HV) dynamics, achieving a satisfactory tracking control performance under uncertainties is always a challenge. The high-order sliding mode control (HOSMC) method with strong robustness has been applied to
Xiaomeng Yin, Xing Wei, Lei Liu, Yongji Wang   +3 more
doaj   +1 more source

Fixed-Time Convergent Guidance Law with Impact Angle Control

Complexity, 2020
The existing convergence control guidance laws are designed via the Lyapunov asymptotic stability theory or finite-time stability theory. However, guidance law based on the Lyapunov asymptotic stability theory would lead the states to zero only as time ...
Zhongtao Cheng, Hao Wu, Bo Wang, Lei Liu, Yongji Wang   +4 more
doaj   +1 more source