PROBLEM TO BE SOLVED: To easily improve image quality in an optical coherence tomographic imaging apparatus.SOLUTION: An optical tomographic image generation method includes: a first step of acquiring signals of a plurality of frames； a second step of converting the signals of the plurality of frames by Fourier conversion and obtaining data on complex numbers, respectively； a third step of combining the plurality of frames by using each of the complex number data； and a fourth step of generating tomographic images based on the combined data.
