Next Article in Journal
Methods and Challenges in Shot Boundary Detection: A Review
Next Article in Special Issue
A Survey of Viewpoint Selection Methods for Polygonal Models
Previous Article in Journal
A Feature Extraction Method Using Improved Multi-Scale Entropy for Rolling Bearing Fault Diagnosis
Previous Article in Special Issue
IBVis: Interactive Visual Analytics for Information Bottleneck Based Trajectory Clustering
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle
Entropy 2018, 20(4), 213;

Viewpoint-Driven Simplification of Plant and Tree Foliage

Institute of New Image Technologies, Universitat Jaume I, Castellón E-12071, Spain
Author to whom correspondence should be addressed.
Received: 17 January 2018 / Revised: 16 March 2018 / Accepted: 16 March 2018 / Published: 21 March 2018
(This article belongs to the Special Issue Information Theory Application in Visualization)
Full-Text   |   PDF [40974 KB, uploaded 3 May 2018]   |  


Plants and trees are an essential part of outdoor scenes. They are represented by such a vast number of polygons that performing real-time visualization is still a problem in spite of the advantages of the hardware. Some methods have appeared to solve this drawback based on point- or image-based rendering. However, geometry representation is required in some interactive applications. This work presents a simplification method that deals with the geometry of the foliage, reducing the number of primitives that represent these objects and making their interactive visualization possible. It is based on an image-based simplification that establishes an order of leaf pruning and reduces the complexity of the canopies of trees and plants. The proposed simplification method is viewpoint-driven and uses the mutual information in order to choose the leaf to prune. Moreover, this simplification method avoids the pruned appearance of the tree that is usually produced when a foliage representation is formed by a reduced number of leaves. The error introduced every time a leaf is pruned is compensated for if the size of the nearest leaf is altered to preserve the leafy appearance of the foliage. Results demonstrate the good quality and time performance of the presented work. View Full-Text
Keywords: geometric simplification; vegetation visualization; mutual information geometric simplification; vegetation visualization; mutual information

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Gasch, C.; Remolar, I.; Chover, M.; Rebollo, C. Viewpoint-Driven Simplification of Plant and Tree Foliage. Entropy 2018, 20, 213.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top