For the existing projector in the trapezoidal correction technology,realizing the trapezoidal correction in the three directions of roll angle,pitch angle and yaw angle simultaneously requires the use of a binocular camera or a monocular camera combined with a distance sensor and a gyroscope sensor.And this leads to problems such as increased costs,increased complexity in use,and reduced reliability.Now,an automatic trapezoidal correction method based on a monocular camera is studied to realize fully automatic image trapezoidal correction without human intervention.By introducing geometrical optical modeling,it assists to calculate the real deformed quadrilateral projection images on the projection plane for the correction of the projector images.The experimental results show that this method can accomplish the automatic correction of the projector with low hardware costs and a simple calculation method.
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