Paper Info
Title
Papaya Tree Detection with UAV Images Using a GPU-Accelerated Scale-Space Filtering Method.
Abstract
The use of unmanned aerial vehicles (UAV) can allow individual tree detection for forest inventories in a cost-effective way. The scale-space filtering (SSF) algorithm is commonly used and has the capability of detecting trees of different crown sizes. In this study, we made two improvements with regard to the existing method and implementations. First, we incorporated SSF with a Lab color transformation to reduce over-detection problems associated with the original luminance image. Second, we ported four of the most time-consuming processes to the graphics processing unit (GPU) to improve computational efficiency. The proposed method was implemented using PyCUDA, which enabled access to NVIDIA's compute unified device architecture (CUDA) through high-level scripting of the Python language. Our experiments were conducted using two images captured by the DJI Phantom 3 Professional and a most recent NVIDIA GPU GTX1080. The resulting accuracy was high, with an F-measure larger than 0.94. The speedup achieved by our parallel implementation was 44.77 and 28.54 for the first and second test image, respectively. For each 4000 x 3000 image, the total runtime was less than 1 s, which was sufficient for real-time performance and interactive application.
Year
DOI
Venue
2017
10.3390/rs9070721
REMOTE SENSING
Keywords
Field
DocType
compute unified device architecture (CUDA),graphics processing units (GPU),PyCUDA,scale-space,tree detection,unmanned aerial vehicle (UAV)
Computer vision,Computer science,CUDA,Filter (signal processing),Scale space,Artificial intelligence,Graphics processing unit,Standard test image,Python (programming language),Speedup,Scripting language
Journal
Volume
Issue
Citations 
9
7
4
PageRank 
References 
Authors
0.42
11
5
Name
Order
Citations
PageRank
Jiang Hao153.16
Shuisen Chen241.10
Dan Li352.14
Chongyang Wang441.10
Ji Yang595.93