In an optical tomography device, a signal processor (22) of an OCT processor (400) generates cross-section information from an interference signal by means of a Fourier transform unit (410), removes noise components from the cross-section information by means of a log transform unit (420) and a smoothing processor (430), and detects signal-void regions by performing binarization processing on the cross-section information by means of a binarization processor (440) after the noise components have been removed. A signal-void region image based on the signal-void regions is constructed in a signal-void region image constructor (450), the signal-void region image is synthesized by an image synthesizer (480) with a separately constructed cross-section image, and the synthesized image is output to a monitor (500).
OPTICAL TOMOGRAPHY DEVICE AND OPTICAL TOMOGRAPHY METHOD