Determination method, determination system, and recording medium

A determination method, a determination system, and a recording medium. A correspondence relationship between a projector coordinate system and a camera coordinate system can be determined with high precision regardless of a fixed state of a camera. A determination device (1A) determines whether or not an imaging device (50) that captures an image of an object to be projected (SC) is fixed, and projects an image from a projector (2) onto the object to be projected (SC). When it is determined that the image is fixed, the specifying device (1A) causes the projector (2) to sequentially project the pattern images belonging to the second group. When it is determined that the image is not fixed, the specifying device (1A) causes the projector (2) to sequentially project pattern images belonging to a first group having a smaller number of images than the second group. A specifying device (1A) generates a captured image by causing an image capturing device (50) to capture an image of an object to be projected (SC) on