Patent ID: 9307228
Filing Date: 2016-04-05
CPC Classification: H04N

Claim Text:
1. A depth of field maintaining apparatus, comprising: a 3D video signal input device; a position measuring device; an image processing device; and a 3D video signal output device, wherein the 3D video signal input device, the position measuring device and the 3D video signal output device are connected to the image processing device, the 3D video signal input device transmits an acquired 3D video signal to the image processing device, the position measuring device transmits detected position information of a viewer and a display screen to the image processing device, and the image processing device adjusts a space between corresponding object points in left and right eye images in the 3D video signal in accordance with the position information and using a computing formula: such that a depth of field remains unchanged, and transmits a adjusted 3D video signal to the 3D video signal output device, wherein M is a space between the corresponding object points of the left and right images shown on the display screen, S is a pupil distance of the viewer, D is a distance between the viewer and the display screen, and L is the depth of field.