| 摘要 |
PROBLEM TO BE SOLVED: To provide an extraction method, program, extraction device, and image projection device with which the feature points of a pattern image for calibration can be effectively extracted from a photographed image of a projection target object on which the pattern image for calibration is projected.SOLUTION: An extraction method of the present invention includes a first extraction step of processing a photographed image of a projection target object on which a pattern image for calibration is projected to extract feature points, a step of specifying a deficient area where the feature points have not been extracted in the first extraction step, and a second extraction step of subjecting the deficient area to processing treatment to extract the feature points. |
