PROBLEM TO BE SOLVED: To objectively evaluate a sense of firmness of individual subjects.SOLUTION: A gray-scale image of luminance is obtained in a cheek region of a face image of the subject. When luminance of the gray-scale image is 256 gray scale, a high luminance region and an intermediate luminance region are extracted, where the high luminance region includes a maximum luminance in the gray-scale image and is at a high gray-scale side from a 20th gray scale in the gray scale of the maximum luminance, and the intermediate luminance region has lower luminance than the high luminance region and is at the high gray-scale side from a 40th gray scale in the gray scale of the maximum luminance. Luminance contour lines of the high luminance region and the intermediate luminance region are added to the cheek region of the face image. Any one or more items of an area ratio of the high luminance region to the intermediate region and a boundary length ratio of the intermediate region are displayed together.COPYRIGHT: (C)2013,JPO&INPIT【課題】個々の被験者について、ハリ感を客観的に評価できるようにする。【解決手段】被験者の顔画像の頬領域について輝度の階調画像を得、該階調画像の輝度を256階調とした場合に、階調画像の最高輝度の階調を含む高輝度領域であって、該最高輝度の階調の20階調下から高階調側の高輝度領域と、高輝度領域よりも輝度の低い中輝度領域であって、前記最高輝度の階調の40階調下から高階調側の中輝度領域を抽出し、高輝度領域と中輝度領域の輝度等高線を、前記顔画像の頬領域に付加し、高輝度領域と中輝度領域の面積比、及び中輝度領域の周囲長比のいずれか一つ以上の項目を併せて表示する。【選択図】図1
