3D imaging device and 3D imaging method

摘要

A 3D imaging device determines during imaging whether the captured images will be viewed three-dimensionally without causing fatigue while simulating actual human perception. In a 3D imaging device, a warning unit provides a warning to a photographer indicating that the captured images of the scene to be imaged will not be perceived as a 3D video having an appropriate 3D effect when a control unit determines that the captured images will not be perceived as such an appropriate 3D video. The 3D imaging device is prevented from obtaining an inappropriate 3D image (3D video).

主权项

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:αn′-αf′=RnRn+Δ⁢⁢R⁢αn-RfRf+Δ⁢⁢R⁢αf≤2·δ⁢⁢x 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.