Patent ID: 11908119
Assignee: DENSO CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 2:
3. The abnormality detection device according to claim 1, wherein
the abnormality determination unit is configured to, in response to the correlation value being out of the predefined range, provisionally determine that there is an abnormality in either of the optical sensor and the camera,
the abnormality detection device further comprises a resolution adjustment unit configured to, in response to the abnormality determination unit provisionally determining that there is an abnormality in either of the optical sensor and the camera, direct the optical sensor to increase resolution of each of the reflection intensity image and the background light image,
the correlation value calculation unit is configured to calculate again the correlation value between at least one of the reflection intensity image and the background light image, whose resolution has been increased by the resolution adjustment unit, and the captured image, and
the abnormality determination unit is configured to, in response to the correlation value calculated again by the correlation value calculation unit being out of the predefined range, determine that there is an abnormality in either of the optical sensor and the camera.