• Opto-Electronic Engineering
  • Vol. 37, Issue 4, 60 (2010)
TANG Ting-yong* and SU Xian-yu
Author Affiliations
  • [in Chinese]
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    DOI: 10.3969/j.issn.1003-501x.2010.04.012 Cite this Article
    TANG Ting-yong, SU Xian-yu. Inverse Fringe Projection and Its Application in the Digital Globe[J]. Opto-Electronic Engineering, 2010, 37(4): 60 Copy Citation Text show less

    Abstract

    A digital globe based on the inverse fringe projection is presented. In the digital globe, the display screen is a spherical surface of the diffuse reflection screen and through the method of projection, digital globe rotating display in any direction can be achieved. First of all, sinusoidal fringes are projected to the spherical screen. Then, from the direction of observing globe, the digital CCD camera is used to obtain deformation fringe images. Through the phase-shifting algorithm, we can establish the transmission geometry between the projector and camera pixels. The inverse projected images for projector can be generated according to the expected images, which come from the 3D Earth graphics information database. 3D information extraction model of the Earth is established to quickly acquire Earth's graphics information in any observation point. In the experiment, the calculated inverse map is projected onto a spherical surface with the diffuse reflection screen,whose the radius is 25 cm. The experimental results are quite satisfactory.
    TANG Ting-yong, SU Xian-yu. Inverse Fringe Projection and Its Application in the Digital Globe[J]. Opto-Electronic Engineering, 2010, 37(4): 60
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