Test strip indicator determining system, terminal device, and method

A terminal device for determining a status of an indicator that changes optical properties based on a specific environment, the terminal device comprising:

• an image acquiring part that acquires an image including an indicator;
• a type information acquiring part that acquires information showing type of the indicator;
• a color information acquiring part that acquires color information before and after change of the indicator that corresponds to the type;
• a status acquiring part that acquires a shape of a first region by the color after change of the indicator in the image based on the color information, and status of the indicator determined based on a determination status corresponding to the type.

A determining method for determining a status of an indicator that changes optical properties based on a specific environment, the determining method comprising:

• an image acquiring step that acquires an image including an indicator;
• a type information acquiring step that acquires information showing type of the indicator;
• a color information acquiring step that acquires color information before and after change of the indicator that corresponds to the type;
• and
• an extracting step that extracts a first region of the image that contains the color after change of the indicator, based on the color information;
• and
• a status determining step that determines status of the indicator based on a determining status that corresponds to the type and the shape of the first region that was extracted by the extracting part.