INDEX GENERATING METHOD, MEASURING METHOD, AND INDEX GENERATING APPARATUS

摘要

An object of the present invention is to provide an index generating method and index generating apparatus capable of accurately and stably generating an index for measuring a width of a subject, and a measuring method capable of accurately and stably measuring a width of a subject. An index generating method according to one embodiment of the present invention includes: an image input step of inputting an image obtained by imaging a linear subject; a density distribution acquiring step of acquiring, from the input image, a plurality of density distributions along a direction orthogonal to a width direction of the linear subject, which are density distributions in the width direction of the linear subject; a function calculating step of calculating a probability distribution function corresponding to the acquired plurality of density distributions; and an index generating step of generating an index indicating a width of the subject based on the calculated probability distribution function.