Blemish detection and notification in an image capture device

摘要

A lens on an image capture device is illuminated with a known light source. The current light field created by illuminating the lens is measured at an image sensor on the device. In response to detecting that the current light field measurement fails to satisfy a threshold, a notification is provided on the device.

主权项

1. A method performed by an image capture device, comprising:
determining characteristics of an unblemished light field, wherein the determined characteristics include a running average of multiple previous light field measurements that satisfy a threshold; illuminating a lens that is disposed on the device with a known light source; generating a measurement of a current light field at an image sensor on the device, the current light field created by illuminating the lens; comparing the current light field measurement against the running average of the multiple previous light field measurements; determining that a difference between the current light field measurement and the running average of the multiple previous light field measurements fails to satisfy the threshold; and providing a notification on the device in response to the determining that the difference between the current light field measurement and the running average of the multiple previous light field measurements fails to satisfy the threshold.