Special Section on High-Performance Computing in Applied Remote Sensing: Part 3

High-performance meshing processing of remote sensing data on large displays

[+] Author Affiliations
Tung-Ju Hsieh

National Taipei University of Technology, Department of Computer Science and Information Engineering, No. 1, Sec. 3, Chung-Hsiao E. Road, Taipei 10608, Taiwan

Wei-Yao Chen

National Taipei University of Technology, Department of Civil Engineering, No. 1, Sec. 3, Chung-Hsiao E. Road, Taipei 10608, Taiwan

Che-Hao Chang

National Taipei University of Technology, Department of Civil Engineering, No. 1, Sec. 3, Chung-Hsiao E. Road, Taipei 10608, Taiwan

Yen-Lin Chen

National Taipei University of Technology, Department of Computer Science and Information Engineering, No. 1, Sec. 3, Chung-Hsiao E. Road, Taipei 10608, Taiwan

Ming-Li Lin

National Taipei University of Technology, Department of Computer Science and Information Engineering, No. 1, Sec. 3, Chung-Hsiao E. Road, Taipei 10608, Taiwan

Shih-Ching Yeh

National Central University, Department of Computer Science and Information Engineering, No. 300, Jhongda Rd., Jhongli, Taoyuan 32001, Taiwan

Yang-Lang Chang

National Taipei University of Technology, Department of Electrical Engineering, No. 1, Sec. 3, Chung-Hsiao E. Road, Taipei 10608, Taiwan

Bormin Huang

University of Wisconsin-Madison, Space Science and Engineering Center, Madison, Wisconsin 53706, United States

J. Appl. Remote Sens. 8(1), 084796 (Sep 05, 2014). doi:10.1117/1.JRS.8.084796
History: Received May 29, 2014; Revised July 20, 2014; Accepted August 11, 2014
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Abstract.  Visualizing light detection and ranging (LIDAR) scans consisting of millions of points on large displays poses a significant challenge. High-resolution large displays allow researchers to examine point clouds in detail. However, how to interact with point clouds rendered on large displays is a difficult problem. We present a case study that visualizes LIDAR point clouds on a tiled display wall termed highly interactive-parallelized display (HIPerDisplay). It has twenty 24-inch liquid-crystal displays with a total resolution of 46 Mpixels. Interaction between the user and the display wall is achieved by using a video camera system that is able to track the position of a hand-held light ball device. A user holds it to manipulate point clouds on the HIPerDisplay. Case studies are conducted to study the LIDAR scans of slopes in the Houshanyue mountain areas in Taiwan. Experiments were conducted to examine the advantages of using the HIPerDisplay for point clouds in data postprocessing. The experiments assess two tasks for manipulating point cloud data designed to evaluate the efficiency of the interactive devices. To evaluate the efficiency of the system, a group of 30 graduate students participated in the experiment. User surveys were performed to evaluate the efficiency of the system and to discover the users’ opinions about using the interactive device in a large display environment. The results showed that the participants preferred to perform LIDAR data operation tasks on a high-resolution large display environment rather than on a single monitor. The results also showed that the HIPerDisplay offered superior performance for the processing of large LIDAR datasets.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Tung-Ju Hsieh ; Wei-Yao Chen ; Che-Hao Chang ; Yen-Lin Chen ; Ming-Li Lin, et al.
"High-performance meshing processing of remote sensing data on large displays", J. Appl. Remote Sens. 8(1), 084796 (Sep 05, 2014). ; http://dx.doi.org/10.1117/1.JRS.8.084796


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