LOW LIGHT EXPOSURE CONTROL USING INFRARED LIGHT-EMITTING DIODE ZONES DURING NIGHT VISION

A method is provided for low light exposure control during night vision. The method may include actively illuminating a region by using a plurality of IR LEDs. The IR LEDs are arranged so that an IR LED of the plurality of IR LEDs covers one of a plurality of zones, which combine to cover the region...

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Bibliographic Details
Main Author Swamy, Ramkrishna
Format Patent
LanguageEnglish
Published 29.02.2024
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:A method is provided for low light exposure control during night vision. The method may include actively illuminating a region by using a plurality of IR LEDs. The IR LEDs are arranged so that an IR LED of the plurality of IR LEDs covers one of a plurality of zones, which combine to cover the region. The method may also include capturing an image frame by an imaging system including an image sensor. The image frame may be made up of pixels and captured using the light originating from the plurality of IR LEDs and reflected from the region onto the image sensor. The method may also include calculating auto-exposure control (AEC) parameters for the image frame to establish an average setting, recalculating AEC parameters for a first zone the plurality of zones and adjusting the power of a first IR LED of the plurality of IR LEDs.
Bibliography:Application Number: US202217898303