Patent ID: 11889032
Assignee: HANGZHOU HIKVISION DIGITAL TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. The method according to claim 14, wherein the image sensor comprises a plurality of light sensing channels, and each light sensing channel is configured to sense at least one type of light in a visible light wave band and light in a near-infrared light wave band;
wherein
the image sensor performs the plurality of exposures in a global shutter manner, for any near-infrared light compensation, there is no intersection between a period of the near-infrared light compensation and an exposure period of a nearest second preset exposure; and the period of the near-infrared light compensation is a subset of the exposure period of the first preset exposure, or there is an intersection between the period of the near-infrared light compensation and the exposure period of the first preset exposure, or the exposure period of the first preset exposure is a subset of the period of the near-infrared light compensation; or,
wherein
the image sensor performs the plurality of exposures in a rolling shutter manner, for any near-infrared light compensation, there is no intersection between a period of the near-infrared light compensation and an exposure period of a nearest second preset exposure; and
a start moment of the near-infrared light compensation is not earlier than a start moment of an exposure of a last row of effective images in the first preset exposure; and an end moment of the near-infrared light compensation is not later than an end moment of an exposure of a first row of effective images in the first preset exposure;
or,
the start moment of the near-infrared light compensation is not earlier than an end moment of an exposure of the last row of effective images in the nearest second preset exposure before the first preset exposure and is not later than the end moment of the exposure of the first row of effective images in the first preset exposure; and the end moment of the near-infrared light compensation is not earlier than the start moment of the exposure of the last row of effective images in the first preset exposure and is not later than a start moment of an exposure of a first row of effective images in the nearest second preset exposure after the first preset exposure; or
the start moment of the near-infrared light compensation is not earlier than the end moment of the exposure of the last row of effective images in the nearest second preset exposure before the first preset exposure and is not later than a start moment of the exposure of the first row of effective images in the first preset exposure; and the end moment of the near-infrared light compensation is not earlier than an end moment of the exposure of the last row of effective images in the first preset exposure and is not later than the start moment of the exposure of the first row of effective images in the nearest second preset exposure after the first preset exposure.