Results 41 to 50 of about 42,043 (166)

3D Registration and Integrated Segmentation Framework for Heterogeneous Unmanned Robotic Systems

open access: yesRemote Sensing, 2020
The paper proposes a novel framework for registering and segmenting 3D point clouds of large-scale natural terrain and complex environments coming from a multisensor heterogeneous robotics system, consisting of unmanned aerial and ground vehicles.
Haris Balta   +4 more
doaj   +1 more source

Learning Two-View Correspondences and Geometry via Local Neighborhood Correlation

open access: yesEntropy, 2021
Seeking quality feature correspondences (also known as matches) is a foundational step in computer vision. In our work, a novel and effective network with a stable local constraint, named the Local Neighborhood Correlation Network (LNCNet), is proposed ...
Luanyuan Dai   +4 more
doaj   +1 more source

Improving K-Means by Outlier Removal [PDF]

open access: yes, 2005
We present an Outlier Removal Clustering (ORC) algorithm that provides outlier detection and data clustering simultaneously. The method employs both clustering and outlier discovery to improve estimation of the centroids of the generative distribution. The proposed algorithm consists of two stages.
Ville Hautamäki   +4 more
openaire   +1 more source

A Method for Measuring Parameters of Defective Ellipse Based on Vision

open access: yesSensors, 2023
Ellipse detection has a very wide range of applications in the field of object detection, especially in the geometric size detection of inclined microporous parts.
He Zhang   +4 more
doaj   +1 more source

Geometric Cover with Outliers Removal

open access: yes, 2021
We study the problem of partial geometric cover, which asks to find the minimum number of geometric objects (unit squares and unit disks in this work) that cover at least (n-t) of n given planar points, where 0 ≤ t ≤ n/2. When t = 0, the problem is the classical geometric cover problem, for which many existing works adopt a general framework called the
Guo, Zhengyang, Li, Yi
openaire   +2 more sources

Monitoring reservoir water elevation changes using Jason-2/3 altimetry satellite missions: exploring the capabilities of JASTER (Jason-2/3 Altimetry Stand-Alone Tool for Enhanced Research)

open access: yesInternational Journal of Digital Earth
In the absence of in-situ data, satellite radar altimetry, critical for studies requiring water elevation data, faces challenges in outlier removal over reservoirs, influenced by surrounding land.
Natalya Ross   +8 more
doaj   +1 more source

Outlier removal in cryo-EM via radial profiles

open access: yesJournal of Structural Biology
The process of particle picking, a crucial step in cryo-electron microscopy (cryo-EM) image analysis, often encounters challenges due to outliers, leading to inaccuracies in downstream processing. In response to this challenge, this research introduces an additional automated step to reduce the number of outliers identified by the particle picker.
Lev Kapnulin   +2 more
openaire   +3 more sources

TPDA2 ALGORITHM FOR LEARNING BN STRUCTURE FROM MISSING VALUE AND OUTLIERS IN DATA MINING

open access: yesJurnal Informatika, 2006
Three-Phase Dependency Analysis (TPDA) algorithm was proved as most efficient algorithm (which requires at most O(N4) Conditional Independence (CI) tests).
Benhard Sitohang, G.A. Putri Saptawati
doaj  

Analysis of Preprocessing Techniques for Missing Data in the Prediction of Sunflower Yield in Response to the Effects of Climate Change

open access: yesApplied Sciences, 2023
Machine learning is often used to predict crop yield based on the sowing date and weather parameters in non-irrigated crops. In the context of climate change, regression algorithms can help identify correlations and plan agricultural activities to ...
Alina Delia Călin   +2 more
doaj   +1 more source

Accuracy Enhancement of ASTER Global Digital Elevation Models Using ICESat Data

open access: yesRemote Sensing, 2011
Global Digital Elevation Models (GDEM) are considered very attractive for current research and application areas due to their free and wide range accessibility.
Peter Reinartz, Hossein Arefi
doaj   +1 more source

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