| 摘要 |
A projector device (1), a method of correcting trapezoidal distortion, and a distortion correction program stored in a recording medium are provided, each of which sets a sampling time period at a predetermined value, sets a value of limit angle (A L ) to be greater than a minimum angle value (±) that defines an inclination angle value subjected for distortion correction, detects inclination of the projector device (1) with respect to a horizontal surface to output a plurality of inclination angle values (X) of the projector device (1) during a current sampling time period having the predetermined value, calculates a representative angle value (Ax) of a current sampling time period based on the plurality of inclination angle values (X) of the projector device (1) that are detected for the current sampling time period, calculates the difference between the representative angle value (Ax) obtained for the current sampling time period and a representative angle value (A x-1 ) obtained for a previous sampling time period, determines whether the difference in representative angle value is equal to or greater than the limit angle value (A L ) to generate a determination result, and corrects trapezoidal distortion in the image to be projected based on the inclination angle values (X) detected during the current sampling time period when the determination result indicates that the difference in representative angle value is equal to or greater than the limit angle value (A L ). |
