Results 31 to 40 of about 202,761 (319)

Real time SVD-based clutter filtering using randomized singular value decomposition and spatial downsampling for micro-vessel imaging on a Verasonics ultrasound system.

Ultrasonics, 2020
Singular value decomposition (SVD)-based clutter filters can robustly reject the tissue clutter as compared with the conventional high pass filter-based clutter filters. However, the computational burden of SVD makes real time SVD-based clutter filtering
U. Lok, P. Song, J. Trzasko, R. Daigle, E. Borisch, Chengwu Huang, Ping Gong, Shanshan Tang, W. Ling, Shigao Chen   +9 more
semanticscholar   +1 more source

Consistent ICP for the registration of sparse and inhomogeneous point clouds [PDF]

, 2016
In this paper, we derive a novel iterative closest point (ICP) technique that performs point cloud alignment in a robust and consistent way. Traditional ICP techniques minimize the point-to-point distances, which are successful when point clouds contain ...
Goeman, Werner, Luong, Hiep, Philips, Wilfried, Vlaminck, Michiel   +3 more
core   +1 more source

Clutter Elimination and Random-Noise Denoising of GPR Signals Using an SVD Method Based on the Hankel Matrix in the Local Frequency Domain

Sensors, 2018
Ground-penetrating radar (GPR) is a kind of high-frequency electromagnetic detection technology. It is mainly used to locate targets and interfaces in underground structures.
Wenda Bi, Yonghui Zhao, Cong An, Shufan Hu   +3 more
doaj   +1 more source

Recent Advances and Applications of Passive Harmonic RFID Systems: A Review

Micromachines, 2021
Harmonic Radio Frequency Identification (RFID) systems have attracted significant interest over the last decade as it provides many benefits over the conventional RFID systems.
Saikat Mondal, Deepak Kumar, Premjeet Chahal   +2 more
doaj   +1 more source

Microwave detection of buried mines using non-contact, synthetic near-field focusing [PDF]

, 2001
Existing ground penetrating radars (GPR) are limited in their 3-D resolution. For the detection of buried land-mines, their performance is also seriously restricted by `clutter'. Previous work by the authors has concentrated on removing these limitations
ADERIN, BENJAMIN, BENJAMIN, BENJAMIN, BENJAMIN, CARTER, E. McCutcheon, EIDE, G.N. Crisp, G.S. Hilton, HABIGER, I.J. Craddock, NILAVALAN, NILAVALAN, PETERS, R. Benjamin, R. Nilavalan, S. Litobarski, VITEBSKIY   +18 more
core   +1 more source

Characterizing Clutter in the Context of Detecting Weak Gaseous Plumes in Hyperspectral Imagery

Sensors, 2006
Weak gaseous plume detection in hyperspectral imagery requires thatbackground clutter consisting of a mixture of components such as water, grass, and asphaltbe well characterized.
Brian McVey, Herb Fry, Bernie Foy, Tom Burr   +3 more
doaj   +1 more source

Clutter Effect Investigation on Co-Polarized Chipless RFID Tags and Mitigation Using Cross-Polarized Tags, Analytical Model, Simulation, and Measurement

Sensors, 2023
Chipless radio frequency identification (RFID) technology is expected to replace barcode technology due to its ability to read in non-line-of-sight (NLOS) situations, long reading range, and low cost.
Jahangir Alam, Maher Khaliel, Feng Zheng, Klaus Solbach, Thomas Kaiser   +4 more
doaj   +1 more source

Window Detection from UAS-Derived Photogrammetric Point Cloud Employing Density-Based Filtering and Perceptual Organization

Remote Sensing, 2018
Point clouds with ever-increasing volume are regular data in 3D city modelling, in which building reconstruction is a significant part. The photogrammetric point cloud, generated from UAS (Unmanned Aerial System) imagery, is a novel type of data in ...
Shirin Malihi, Mohammad Javad Valadan Zoej, Michael Hahn, Mehdi Mokhtarzade   +3 more
doaj   +1 more source

Time Reversal Detection for Moving Targets in Clutter Environments

Remote Sensing, 2023
Moving target detection plays a pivotal role in many applications, especially in radar systems. In addition, time-reversal (TR) technology can improve radar detection probability by effectively solving the problem of multipath signals. However, detection
Hao Lian, Minglei Yang, Saiqin Xu, Dingsen Zhou, Meng Liu   +4 more
doaj   +1 more source

Effect of the Temperature-Emissivity Contrast on the Chemical Signal for Gas Plume Detection Using Thermal Image Data

Sensors, 2008
Detecting and identifying weak gaseous plumes using thermal imaging data is complicated by many factors. These include variability due to atmosphere, ground and plume temperature, and background clutter. This paper presents an analysis of one formulation
Candace Metoyer, Mark Tardiff, Larry Chilton, Stephen Walsh   +3 more
doaj   +1 more source