VIDEO COMPOSING APPARATUS, VIDEO COMPOSING METHOD, AND VIDEO COMPOSING PROGRAM

摘要

PROBLEM TO BE SOLVED: To compose a video picture by estimating a light source direction from a video picture in which an image of a light source is not directly taken, without requiring complicated calibration and any special device.;SOLUTION: The image composing apparatus composes a video picture having optical consistency from plural video pictures on which subjects having different light-source environments have been imaged. The image composing apparatus: stores a known video picture that includes a subject and is associated beforehand to light source information including a light source position; selects plural subject regions included in an input video picture; determines whether or not subjects included in the selected subject regions are spherical; for each subject region in which a corresponding subject has been determined to be spherical, calculates a light source position with respect to the corresponding subject in the subject region; corrects the known video picture on the basis of the calculated light source position; and combines the know video picture having the corrected light source position with the input video picture.;COPYRIGHT: (C)2013,JPO&INPIT