The disclosed image processing device is provided with a polarized illumination unit (120) which sequentially illuminates a body to be imaged with three or more types of linearly polarized light with different polarization plane angles, an imaging unit (140) which images the body to be imaged when said body to be imaged is sequentially illuminated by each of the three or more different types of linearly polarized light, and an image processing unit (150). The image processing unit (150) is provided with: a variable-brightness processing unit (1302) which processes the brightness of the images captured by the imaging unit and calculates the reflection polarization state of the surface of the body to be imaged a reflection determination unit (1305) which, on the basis of the output of the variable-brightness processing unit (1302), differentiates multiple reflection regions, in which return light is reflected twice in a concave area, and single reflection regions, in which return light is reflected once on the surface of the body to be imaged and a mirror image search unit (1306) which determines a pair of multiple reflection regions in which return light is reflected twice in a concave area on the surface of the body to be imaged. The image processing unit (150) generates images showing the aforementioned concave area on the surface of the aforementioned body to be imaged on the basis of the pair of the multiple reflection regions.Linvention porte sur un dispositif de traitement dimage qui comprend une unité déclairage polarisée (120) qui éclaire séquentiellement un corps soumis à une imagerie par au moins trois types de lumière polarisée linéairement ayant des angles de plan de polarisation différents, une unité dimagerie (140) qui forme limage du corps soumis à une imagerie lorsque ledit corps soumis à une imagerie est séquentiellement éclairé par chacun des au moins trois types différents de lumière polarisée linéairement, et une unité de traitement dimage (150).
