1. An expression estimation device configured to estimate an expression of a person from an image, the expression estimation device comprising: an expression determination unit that analyzes the image of the person to generate first expression information indicating an expression of the person; a motion determination unit that analyzes the image of the person to determine a type of motion of the person; and an expression estimation unit that generates second expression information indicating the expression of the person according to the first expression information generated by the expression determination unit and the type of motion determined by the motion determination unit, wherein the first expression information is information in which a fitness for each of the different expressions is indicated in terms of numerical value, and wherein the expression estimation unit generates the second expression information by correcting the numerical value of the first expression information using predetermined correction information on each type of motion.