Dazzle resilient video camera or video camera module
AssigneeThe Secretary of State for Defence
InventorSean Michael Tsi-Ong Tipper
Life of this patent
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Abstract
Video camera or video camera module, comprising an RGB image sensor, a computer processor adapted to perform pre-processing followed by video compression, and a dazzle detector, characterised in responding to dazzle in one colour channel by reducing values in that colour channel prior to compressing the video data. This has the advantage that in the event of laser dazzle that is specific to a colour channel, the compressed video data generated will retain more detail from the other colour channels compared to a conventional camera.
Claims9
A video camera or video camera module, having a field of view, comprising:
- a single chip image sensor including a red, green, and blue (RGB) Bayer filter, arranged to generate raw RGB video data;
- a computer processor adapted to perform image processing on the raw RGB video data, comprising at least one pre-processing operation, followed by a post processing compression operation to generate compressed video data;
- a detector adapted to determine an excess amount of light in at least one RGB colour channel as compared to other RGB colour channel(s), the excess amount of light associated with dazzle consistent with a laser, in at least part of the field of view of the video camera or video camera module, and to output to the computer processor a determination of at least one specified RGB colour channel as including the excess amount of light, wherein the determination is either based on video data from the RGB sensor or based on data from a light spectrum sensor or laser detector;
- wherein the computer processor is adapted to respond to the determination of an excess amount of light in the at least one specified RGB colour channel by reducing values of the specified RGB colour channel(s) as the part of the at least one pre-processing operation in advance of the post processing compression operation.
Dependencies are inferred from the claim text.