VIDEO PROCESSING DEVICE, VIDEO PROCESSING METHOD AND VIDEO PROCESSING PROGRAM

A video processing device (30) includes a video acquirer (31), a video recognition unit (32), a luminance value acquirer (33), and a luminance adjuster (35). The video acquirer (31) acquires a video in which the face of an image capture object is captured. The video recognition unit (32) recognizes an iris part and an eyelid part in a video acquired by the video acquirer (31). The luminance value acquirer (33) acquires a luminance value of each of the iris part and the eyelid part recognized by the video recognition unit (32). The luminance adjuster (35) adjusts a luminance value of a video such that the luminance values of the iris part and the eyelid part acquired by the luminance value acquirer (33) respectively become closer to a certain iris luminance upper threshold in the iris part and a certain eyelid luminance lower threshold in the eyelid part.