关键词: 几何失真校正, 等弧长校正, 边缘融合, 透视投影, 大迎角, F-16飞行器

Abstract: Geometrical calibration is one of the key technologies for multi-channel projection system. In consideration of the complexity and expensive of existing correction methods which needs camera to collect the feedback images, a new algorithm is proposed to correct geometrical distortion. Firstly, the pixels of the uncorrected image are mapped to the cylindrical screen with equal-arc method. Then the correction of the geometrical distortion is 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 it completes the high angle of attack flight simulation based on two projection channels. It can provide significant stall feeling so as to be a good platform for high angle of attack flight test analysis.

Key words: geometric distortion correction, equal-arc correction, edge blending, perspective projection, high angle of attack, F-16