Projection apparatus and method for controlling the same, and a computer-readable storage medium

A method for controlling a projection apparatus for projecting a plurality of stereoscopic images such that portions thereof overlap each other and displaying one stereoscopic image, the method comprising:

• a projection step of projecting an indicator that is an image for adjusting a stereoscopic degree corresponding to a parallax between a projected left image and a projected right image, in an overlapping region where the plurality of stereoscopic images overlap each other, by a projection unit;
• a detection step of detecting a parallax between an indicator in the left image and an indicator in the right image based on a captured image of a projected indicator, by a detection unit;
• and
• an adjustment step of adjusting stereoscopic degrees of the plurality of stereoscopic images by an adjustment amount that is determined based on the detected parallax, by an adjustment unit.

A non-transitory computer-readable storage medium storing a computer program for causing a computer to function as each unit of a projection apparatus for projecting a plurality of stereoscopic images such that portions thereof overlap each other and displaying one stereoscopic image, the apparatus comprising:

• a projection unit adapted to project an indicator that is an image for adjusting a stereoscopic degree corresponding to a parallax between a projected left image and a projected right image, in an overlapping region where the plurality of stereoscopic images overlap each other;
• a detection unit adapted to detect a parallax between an indicator in the left image and an indicator in the right image based on a captured image of a projected indicator;
• and
• an adjustment unit adapted to adjust stereoscopic degrees of the plurality of stereoscopic images by an adjustment amount that is determined based on the detected parallax.