| 摘要 |
To enable display of a guide display screen that is excellent in visibility and reduced in the risk of occurrence of privacy or security problems without increasing processing load. A processing unit executes a process for creating a dedicated color palette (color palette dedicated for a palm vein GUI) as an initialization process, and creates the color palette dedicated for a palm vein GUI. The processing unit (11) replaces a 256-level gradation grayscale palette set in an acquired photographed image (322) with the color palette dedicated for the palm vein GUI. The processing unit performs guide GUI display for guiding a palm to an appropriate position, using a display image formed by setting the color palette dedicated for the palm vein GUI for the photographed image acquired from a photographed image-acquiring process. |
