Patent ID: 11887349
Assignee: NEC CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 0:
1. An interest determination apparatus comprising:
hardware, including a processor and memory;
an image acquisition unit implemented at least by the hardware and configured to acquire image data obtained by capturing at least eyes of a target person, the image data comprising at least one image;
an object specifying unit implemented at least by the hardware and configured to specify an object in a line-of-sight direction of the target person using the image data;
an incident light amount calculation unit implemented at least by the hardware and configured to calculate an incident light amount representing an amount of light incident on the eyes of the target person using the image data;
a reference pupil size determination unit implemented at least by the hardware and configured to determine a reference pupil size based on the incident light amount;
a pupil size calculation unit implemented at least by the hardware and configured to calculate a pupil size of the target person using the image data; and
an interest determination unit implemented at least by the hardware and configured to determine an interest of the target person in the object by comparing the reference pupil size with the pupil size, wherein
the image data is further obtained by capturing the object, and
the incident light amount calculation unit calculates luminance in the object using the image data, calculates illuminance in the eyes of the target person from color information of a sclera, which is a white eye area of the eyes, of the target person in the image data, and calculates the incident light amount based on the luminance in the object and the illuminance in the eyes of the target person.