Results 41 to 50 of about 2,969,604 (339)
Origin and Application of the Twinned Calcite Strain Gauge
Geosciences, 2021 This paper is a personal account of the origin and development of the twinned-calcite strain gauge, its experimental verification, and its relationship to stress analysis.
Richard H. Groshong
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Noise removal from multiple MRI images [PDF]
Journal of Digital Imaging, 1994 We introduce a novel technique for magnetic resonance image (MRI) restoration, using a physical model (spin equation). We determine a set of three basis images (proton density and nuclear relaxation times) from the MRI data using a nonlinear optimization method, and use those images to obtain restorations of the original image.
S J, Garnier +3 more
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Towards a Guideline for UAV-Based Data Acquisition for Geomorphic Applications
Remote Sensing, 2023 Recent years have seen a rapid rise in the generation of high-resolution topographic data using custom-built or commercial-grade Unmanned Aerial Vehicles (UAVs).
Dipro Sarkar +2 more
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An Iterative Mean Filter for Image Denoising
IEEE Access, 2019 We propose an Iterative Mean Filter (IMF) to eliminate the salt-and-pepper noise. IMF uses the mean of gray values of noise-free pixels in a fixed-size window. Unlike other nonlinear filters, IMF does not enlarge the window size. A large size reduces the
ugur erkan +3 more
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A Noise Removal Algorithm Based on OPTICS for Photon-Counting LiDAR Data
IEEE Geoscience and Remote Sensing Letters, 2020 Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) shows great potential for forest height retrieval. However, there are abundant noise photons in the ICESat-2 data, which make the accurate extraction of global forest heights challenging.
Xiaoxiao Zhu +6 more
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Voxel-Based Spatial Filtering Method for Canopy Height Retrieval from Airborne Single-Photon Lidar
Remote Sensing, 2016 Airborne single-photon lidar (SPL) is a new technology that holds considerable potential for forest structure and carbon monitoring at large spatial scales because it acquires 3D measurements of vegetation faster and more efficiently than conventional ...
Hao Tang +4 more
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Hyperspectral Mixed Noise Removal By $\ell _1$-Norm-Based Subspace Representation
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020 This article introduces a new hyperspectral image (HSI) denoising method that is able to cope with additive mixed noise, i.e., mixture of Gaussian noise, impulse noise, and stripes, which usually corrupt hyperspectral images in the acquisition process ...
Lina Zhuang, M. Ng
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SensorsThis paper proposes a point cloud post-processing method based on the minimum spanning tree (MST) and depth-first search (DFS) to extract laser stripe centerlines from the complex inner surfaces of deep holes.
Huifu Du +3 more
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AWGN Removal Using Modified Steering Kernel and Image Matching
Applied Sciences, 2022 Image noise occurs during acquisition and transmission and adversely affects processes, such as image segmentation and object recognition and classification.
Bong-Won Cheon, Nam-Ho Kim
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Remote SensingThe high-precision motion state analysis of space targets has important scientific value and application potential in the fields of geodynamics, geodesy, space collision warning and avoidance, and the capture, recovery, and removal of space debris.
Yanning Zheng +7 more
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