Dual-Spectrum Image Processing for Event-Triggered Invisible Light Detection
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Solution Overview
Problem
Surveillance systems using visible light sensors struggle to detect danger events that emit invisible light, such as arcs or high temperatures, as they rely solely on visible light detection.
Innovation Solution
An image processing system incorporating both visible and invisible light sensors, with an event detector to activate or deactivate the invisible light ISP based on specific events, allowing for the generation of invisible light images when needed, and combining these with visible light images when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only visible light sensors are used in the surveillance system, then the system complexity and power consumption are reduced, but the system cannot detect danger events that emit invisible light such as arcs or high temperature
Solution Approach 1:
The patent implements dynamic activation of the invisible light ISP based on event detection. The system switches between active and inactive states for the invisible light processing pipeline, activating it only when specific events are detected in visible light images. This dynamic approach maintains comprehensive detection capability while reducing average system complexity and power consumption.
Solution Approach 2:
The patent creates a multi-functional surveillance system that can detect both visible light events and invisible light events (arcs, high temperature) using a unified architecture. The same sensor array and processing framework handle both visible and invisible light detection, eliminating the need for separate dedicated systems and reducing overall complexity.
2Reliability
If invisible light ISP is always activated to detect danger events, then detection capability is improved, but power consumption increases
Solution Approach 1:
The system employs periodic scanning of visible light images to monitor for specific events. Instead of continuously processing invisible light data, the system periodically checks visible light frames for event patterns and only activates the power-intensive invisible light ISP when events are detected, creating a periodic activation pattern that reduces average power consumption.
Solution Approach 2:
The system performs preliminary detection using the lower-power visible light sensor to identify potential danger events before activating the invisible light ISP. This preliminary screening action filters out non-critical periods, allowing the system to prepare for and respond to actual threats while minimizing unnecessary activation of high-power components.
3Measurement precision
If invisible light sensor and processing components are added to detect arcs and high temperature, then detection precision for danger events is improved, but device complexity increases
Solution Approach 1:
The patent merges the invisible light detection capability into the existing visible light processing pipeline. The invisible light sensor array is integrated with the visible light sensor, and the invisible light ISP is combined with the visible light ISP, allowing both detection functions to share common infrastructure and reduce overall component complexity.
Solution Approach 2:
The processing system is segmented into separate visible light and invisible light pipelines, with the invisible light processing only activated when needed. This segmentation allows the system to maintain full detection precision by having dedicated processing paths for each light type, while avoiding the complexity of continuously running all processing functions simultaneously.
Data Source
AI summary
An image processing system, comprising: a visible light sensor, configured to generate visible light sensing signals; a visible light ISP (image signal processor), configured to generate visible light images according to the visible light sensing signals; an invisible light sensor, configured to generate invisible light sensing signals; an invisible light ISP, configured to generate invisible light images according to the invisible light sensing signals; and an event detector, configured to activate or inactivate the invisible light ISP according to if a specific event occurs. The image processing system may be applied to a surveillance system.