This shape estimation apparatus includes an input unit that is configured to receive input of detected information, which indicates the relationship between a wavelength and an amount of light, obtained by a photodetector using a shape estimating sensor configured such that the amount of light detected for the wavelength corresponding to each of a plurality of parts thereof to be detected is different according to the shape of each of the plurality of parts thereof to be detected. The shape estimation apparatus further includes: a storage unit that stores a light amount estimation relationship which includes shape characteristic information indicating the relationship between shape, wavelength, and amount of light for each of the plurality of parts to be detected； a light amount calculation unit that calculates light amount information which is the result of correcting errors due to temperature-dependent noise in the detected information from the photodetector； a curvature calculation unit that calculates the curvature of a detected part from a light amount estimation value, which indicates the relationship between the wavelength and the amount of light calculated on the basis of the light amount estimation relationship, and the light amount information from the light amount calculation unit； and a shape calculation unit that estimates the shape of the shape estimating sensor on the basis of the information on the curvatures and positions of the detected parts.La présente invention concerne un appareil d'estimation de forme qui comprend une unité d'entrée qui est configurée pour recevoir une entrée d'informations détectées, qui indiquent la relation entre une longueur d'onde et une quantité de lumière, obtenue par un photodétecteur à l'aide d'un capteur d'estimation de forme configuré de sorte que la quantité de lumière détectée pour la longueur d'onde correspondant à chacune d'une pluralité de parties de celle-ci devant être détectées soit différente en fonction de
