3D surface reconstruction is one of the most important topics in Spatial Augmented Reality (SAR). Using structured
light is a simple and rapid method to reconstruct the objects. In order to improve the precision of 3D reconstruction, we
present a high-accuracy multi-view 3D measurement system based on Gray-code and Phase-shift. We use a camera and a
light projector that casts structured light patterns on the objects. In this system, we use only one camera to take photos on
the left and right sides of the object respectively. In addition, we use VisualSFM to process the relationships between
each perspective, so the camera calibration can be omitted and the positions to place the camera are no longer limited.
We also set appropriate exposure time to make the scenes covered by gray-code patterns more recognizable. All of the
points above make the reconstruction more precise. We took experiments on different kinds of objects, and a large
number of experimental results verify the feasibility and high accuracy of the system.
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