TY - GEN
T1 - Research on representing remote sensing images based on QTM
AU - Lv, Zhenhua
AU - Wu, Jianping
AU - Zhang, Shengmao
AU - Zhao, Hui
PY - 2010
Y1 - 2010
N2 - Representing RS (remote sensing) images under multi-resolution is a key component of "Digital Earth", and becomes one of the fundamental problems in Geography and Spatial Information Science. QTM (Quaternary Triangular Mesh) with excellent features of global continuity, stability, hierarchy, and uniformity has the potential ability to represent the global model. In this paper, we present a method of displaying the RS images. This method is primarily divided into two steps. First, the calculated geographical coordinate of each pixel in a dataset is transformed into a QTM code at a proper subdivision level, and the pixel value is also mapped into a triangular cell which is correlative to the pixel. Second, all the triangular cells are displayed by the use of OpenGL. The transformation from geographical coordinates to QTM codes are also examined at different subdivision levels. In the end, the experiment is performed with FengYun(FY-3) Satellite Data(HDF5 format) and aerial remote images (Tif format) of Shanghai in China. The results illustrate that this method is acceptable.
AB - Representing RS (remote sensing) images under multi-resolution is a key component of "Digital Earth", and becomes one of the fundamental problems in Geography and Spatial Information Science. QTM (Quaternary Triangular Mesh) with excellent features of global continuity, stability, hierarchy, and uniformity has the potential ability to represent the global model. In this paper, we present a method of displaying the RS images. This method is primarily divided into two steps. First, the calculated geographical coordinate of each pixel in a dataset is transformed into a QTM code at a proper subdivision level, and the pixel value is also mapped into a triangular cell which is correlative to the pixel. Second, all the triangular cells are displayed by the use of OpenGL. The transformation from geographical coordinates to QTM codes are also examined at different subdivision levels. In the end, the experiment is performed with FengYun(FY-3) Satellite Data(HDF5 format) and aerial remote images (Tif format) of Shanghai in China. The results illustrate that this method is acceptable.
KW - Coordinates transformation
KW - HDF
KW - QTM code
KW - Quaternary triangular mesh
KW - Remote sensing image
UR - https://www.scopus.com/pages/publications/78650355177
U2 - 10.1117/12.873152
DO - 10.1117/12.873152
M3 - 会议稿件
AN - SCOPUS:78650355177
SN - 9780819483645
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Sixth International Symposium on Digital Earth
T2 - 6th International Symposium on Digital Earth: Data Processing and Applications
Y2 - 9 September 2009 through 12 September 2009
ER -