Projector, computer program product, and trapezoidal distortion correcting method

A computer program product embodied in at least one computer readable medium and comprising computer instructions executable by a computer of a projector, which controls a storing unit, an imaging unit, and a projecting unit, to perform the function of:

• causing the storing unit to store setting data indicating a manual trapezoidal distortion correction system selected out of plural kinds of manual trapezoidal distortion correction systems when manual trapezoidal distortion correction is instructed;
• causing the imaging unit to pick up an image of a projection target area and generate a pickup image;
• performing automatic trapezoidal distortion correction on the basis of operation information indicating an automatic trapezoidal distortion correction instruction and the pickup image;
• causing the projecting unit to project, after the automatic trapezoidal distortion correction is performed, irrespectively of the manual trapezoidal distortion correction system indicated by the setting data, an adjustment instruction image for urging adjustment of a vertex position of a display planned area of the image in the projection target area on the projection target area;
• and
• performing manual trapezoidal distortion correction on the basis of operation information indicating an adjustment instruction for the vertex position.

A trapezoidal distortion correcting method for a computer of a projector, which controls a storing unit, an imaging unit, and a projecting unit, the method comprising the steps of:

• allowing the computer to cause the storing unit to store setting data indicating a manual trapezoidal distortion correction system selected out of plural kinds of manual trapezoidal distortion correction systems when manual trapezoidal distortion correction is instructed;
• allowing the computer to cause the imaging unit to pick up an image of a projection target area and generate a pickup image;
• allowing the computer to perform automatic trapezoidal distortion correction on the basis of operation information indicating an automatic trapezoidal distortion correction instruction and the pickup image;
• allowing the computer to cause the projecting unit to project, after the automatic trapezoidal distortion correction is performed, irrespectively of the manual trapezoidal distortion correction system indicated by the setting data, an adjustment instruction image for urging adjustment of a vertex position of a display planned area of the image in the projection target area on the projection target area;
• and
• allowing the computer to perform manual trapezoidal distortion correction on the basis of operation information indicating an adjustment instruction for the vertex position.