Low light monitoring system utilizing dual video streams

CN114930806BActive Publication Date: 2026-07-07SANDISK TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SANDISK TECH
Filing Date
2021-05-12
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing video surveillance systems struggle to simultaneously support grayscale video display and advanced analytics, especially facial or object recognition, under low-light conditions, and existing technologies may result in image distortion or excessive costs.

Method used

By employing dual-stream video technology, an infrared blocking filter is used to disable the infrared filter under low-light conditions, generating a grayscale video stream for display, and a full-spectrum video stream is generated for analysis. Combined with an analysis engine, event detection and model training are performed to achieve effective image processing under low-light conditions.

Benefits of technology

It achieves clear display of grayscale video and effective support for advanced analysis under low-light conditions, reduces system costs, and improves the accuracy and efficiency of event detection.

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Abstract

The present disclosure describes systems and methods for low light monitoring systems utilizing dual video streams. A video camera can include an image sensor and an infrared cut filter. In response to detecting low light conditions, the infrared cut filter can be disabled, and full spectrum video data from the video camera can be sent in one video stream that is processed for a user display, such as rendered in grayscale, and in another video stream for analytics processing, such as event detection.
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