Abstract
Geometrical calibration is one of the key technologies for multi-channel projection system. In consideration of the complexity and cost of existing correction methods which need camera to collect the feedback images, another algorithm was proposed to correct geometrical distortion. Firstly, the pixels of the uncorrected image were mapped to the cylindrical screen with equal-arc length method. Then the correction of the geometrical distortion was realized by transforming the pixels on the cylindrical screen to the 2D coordinate of pre-corrected image according to perspective projection. Combined with simplified edge blending method, this system completed the high-angle-of-attack flight simulation based on two-channel projection and could be a platform for high-angle-of-attack flight test and flight accident reconstruction.
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