| 摘要 |
RGB image signals are inputted. B/G ratio is calculated based on B image signal and G image signal. G/R ratio is calculated based on the G image signal and R image signal. In a feature space formed by the B/G ratio and the G/R ratio, a first process is performed. In the first process, a difference between coordinates in a first observation area and coordinates in a second observation area is increased. The first observation area mostly contains coordinates corresponding to a portion (of an object) infected with H. pylori. The second observation area mostly contains coordinates corresponding to a portion (of the object) in which eradication of the H. pylori infection has been successful. |
