Patent ID: 9049434
Filing Date: 2015-06-02
Classification: G03B,H04N

Abstract:
1. A 3D imaging device for three-dimensionally imaging a subject and capturing a 3D image formed by a first viewing point image and a second viewing point image, the 3D imaging device comprising: an optical system configured to form an optical image of the subject; an image generator configured to generate the 3D image based on the formed optical image; a disparity detector configured to detect a disparity of the 3D image; a display parameter gatherer configured to obtain a display parameter associated with an environment in which the 3D image is viewed; a 3D perception determiner configured to determine, during imaging for generating the 3D image, whether the generated 3D image will be easy to view three-dimensionally based on the detected disparity and the obtained display parameter; the 3D perception determiner calculates, based on the disparity detected by the disparity detector, a maximum subject distance Rf that is a distance to a farthest subject having a maximum subject distance in a scene to be imaged three-dimensionally and a minimum subject distance Rn that is a distance to a nearest subject having a minimum subject distance in the scene to be imaged three-dimensionally, and determines, during 3D imaging, whether the scene to be imaged will be easy to view three-dimensionally at a backward position to which the 3D imaging device is moved by determining whether the formula below is satisfied: where δx is a relative disparity angle indicating a range that can be viewed three-dimensionally, ΔR is a distance between a current position of the 3D imaging device and the backward position to which the 3D imaging device is moved in a direction away from the subject, αf is a disparity angle of the farthest subject at the current position of the 3D imaging device, an is a disparity angle of the nearest subject at the current position of the 3D imaging device, αf is a disparity angle of the farthest subject at the backward position of the 3D imaging device, and an is a disparity angle of the nearest subject at the backward position of the 3D imaging device; and a controller configured to set a control mode for changing a positional relationship between the 3D imaging device and the subject when the 3D perception determiner determines that the 3D image will be difficult to view three-dimensionally.