Abstract: An evaluation value of a sense of temperature that is closer to human perception is estimated. An image feature amount extraction unit (11) extracts an image feature amount from an input image. A temperature sense estimation unit (12) estimates a temperature sense score from the image feature amount with use of a temperature sense estimation model in which a correlation between the image feature amount and the temperature sense score has been learned in advance. The temperature sense score may be weighted with use of a material weight previously set with respect to the material information corresponding to the input image. As the image feature amount, representative values of coordinates a*, b* in a Lab three-dimensional space or a color histogram in which the Lab three-dimensional space is divided into the predetermined number may be used.