Portable projector

Abstract

The present invention provides a portable projection device that can smoothly change the position of the projected image, even when it has a hand-shake function. [Solution] The projection state maintenance processing unit 16 performs projection state maintenance processing to suppress changes in the position, size, or shape of the projected image relative to the projection surface SC, based on the detection result of a first relative change, which is a relative change in the position or orientation of the projector 11 with respect to the projection surface SC. The second detection unit 17 detects a relative change in the position or size of the projected image on the projection surface SC as a second relative change. If it is determined from the second relative change that the conditions for releasing the projection state maintenance processing are met, the projection state maintenance processing is released.

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