Bed area extraction method and bed area extraction apparatus

摘要

A bed area extraction method includes specifying, by a computer, a first part of a bed candidate area in an image based on a first line segment extracted from the image; setting a search range for searching a second line segment with reference to the bed candidate area which is determined based on the specified first part of the bed candidate area; and correcting the bed candidate area based on a disposition of the second line segment included in the set search range.