Point density variations in airborne lidar point clouds

V Petras, A Petrasova, JB McCarter, H Mitasova… - Sensors, 2023 - mdpi.com
In spite of increasing point density and accuracy, airborne lidar point clouds often exhibit
point density variations. Some of these density variations indicate issues with point clouds …

Adaptive coarse-to-fine clustering and terrain feature-aware-based method for reducing LiDAR terrain point clouds

C Chen, H Wu, Z Yang, Y Li - ISPRS Journal of Photogrammetry and …, 2023 - Elsevier
Light detection and ranging (LiDAR)-derived point cloud has become the standard spatial
data for digital terrain model (DTM) construction; however, it suffers from huge data with …

Revisiting point cloud simplification: A learnable feature preserving approach

RA Potamias, G Bouritsas, S Zafeiriou - European Conference on …, 2022 - Springer
The recent advances in 3D sensing technology have made possible the capture of point
clouds in significantly high resolution. However, increased detail usually comes at the …

Point cloud simplification for the boundary preservation based on extracted four features

H Chen, W Cui, C Bo, N Yang - Displays, 2023 - Elsevier
This paper proposes a simplification algorithm based on four feature parameters, aiming at
solving the problem that the edge features cannot be retained due to the incompletely …

3D Point Cloud Simplification Based on k‐Nearest Neighbor and Clustering

A Mahdaoui, EH Sbai - Advances in Multimedia, 2020 - Wiley Online Library
While the reconstruction of 3D objects is increasingly used today, the simplification of 3D
point cloud, however, becomes a substantial phase in this process of reconstruction. This is …

A saliency-based sparse representation method for point cloud simplification

E Leal, G Sanchez-Torres, JW Branch-Bedoya, F Abad… - Sensors, 2021 - mdpi.com
High-resolution 3D scanning devices produce high-density point clouds, which require a
large capacity of storage and time-consuming processing algorithms. In order to reduce both …

Feature preserving and uniformity-controllable point cloud simplification on graph

J Qi, W Hu, Z Guo - … conference on multimedia and expo (ICME), 2019 - ieeexplore.ieee.org
With the development of 3D sensing technologies, point clouds have attracted increasing
attention in a variety of applications for 3D object representation, such as autonomous …

A tree point cloud simplification method based on fpfh information entropy

C Hu, Y Ru, S Fang, H Zhou, J Xue, Y Zhang, J Li, G Xu… - Forests, 2023 - mdpi.com
LiDAR technology has been widely used in forest survey and research, but the high-
resolution point cloud data generated by LiDAR equipment also pose challenges in storage …

Feature-preserved point cloud simplification based on natural quadric shape models

K Zhang, S Qiao, X Wang, Y Yang, Y Zhang - Applied Sciences, 2019 - mdpi.com
With the development of 3D scanning technology, a huge volume of point cloud data has
been collected at a lower cost. The huge data set is the main burden during the data …

[PDF][PDF] Rethinking the Role of Activation Functions in Deep Convolutional Neural Networks for Image Classification.

Q Zheng, M Yang, X Tian, X Wang… - engineering …, 2020 - engineeringletters.com
Deep convolutional neural network used for image classification is an important part of deep
learning and has great significance in the field of computer vision. Moreover, it helps …