Dynamic Frame Rate Control for High-Velocity Object Detection
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Solution Overview
Problem
Surveillance cameras face inefficiencies in data storage due to constant frame rates, which result in unnecessary data generation for stationary backgrounds and inadequate recording of fast-moving objects, leading to wasted storage space and performance issues.
Innovation Solution
A device and method for controlling video recording attributes, such as frame rate and exposure value, based on object velocity, using a video input unit, motion information acquiring unit, and camera module controller to dynamically adjust recording settings, optimizing data usage and object detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a constant frame rate is used for video recording, then the recording performance is stable and simple to control, but unnecessary data is generated for stationary backgrounds and fast-moving objects cannot be accurately recorded
Solution Approach 1:
The patent applies dynamics by transitioning from a static constant frame rate to a dynamic variable frame rate system. The frame rate is adjusted in real-time based on detected object velocity: higher frame rates for fast-moving objects to capture motion accurately, and lower frame rates for stationary or slow-moving scenes to reduce data generation. This dynamic adaptation resolves the contradiction between recording efficiency and storage space utilization.
Solution Approach 2:
The patent changes the frame rate parameter based on object velocity detection. By monitoring motion in video frames and adjusting the frame rate parameter accordingly, the system optimizes the balance between capturing fast-moving objects accurately and minimizing unnecessary data recording during stationary periods, thereby improving recording efficiency while reducing storage requirements.
2Ease of operation
If a constant frame rate is used for video recording, then the system is simple to operate, but fast-moving objects cannot be accurately photographed
Solution Approach 1:
The system performs self-service by automatically detecting object velocity and adjusting frame rate without user intervention. The surveillance camera monitors motion in video frames, calculates object velocity, and autonomously modifies the recording frame rate to match the detected motion level, maintaining operational simplicity while improving detection accuracy for fast-moving objects.
Solution Approach 2:
The patent implements feedback by continuously monitoring video content for object motion, calculating velocity based on frame-to-frame changes, and using this information to adjust the frame rate. This closed-loop feedback mechanism ensures that the recording parameters adapt to actual scene conditions, improving object detection accuracy while maintaining system simplicity through automated control.
3Measurement precision
If a high frame rate is used to accurately record fast-moving objects, then object detection accuracy improves, but unnecessary data is generated for stationary backgrounds
Solution Approach 1:
The patent applies dynamics by making the frame rate adaptive rather than fixed. The system dynamically adjusts the frame rate based on real-time object velocity detection: using high frame rates only when fast-moving objects are detected (improving detection accuracy) and low frame rates when scenes are stationary (improving data generation efficiency). This dynamic parameter adjustment resolves the contradiction between accuracy and efficiency.
Solution Approach 2:
The patent changes the frame rate parameter based on detected object velocity. By monitoring motion between frames and adjusting the frame rate parameter in response to velocity changes, the system achieves high detection accuracy for moving objects while minimizing unnecessary data generation during stationary periods, thereby resolving the contradiction between measurement precision and productivity.
Data Source
AI summary
Method and device for controlling a video recording attribute such as a frame rate and/or an exposure value to suitably record a video depending on a velocity of an object detected by a camera module are provided. The device for controlling a video recording attribute of a camera module includes: a video input unit that receives video data corresponding to frames from the camera module; a motion information acquiring unit that acquires motion information between two successive frames; a video recording attribute determining unit that determines the video recording attribute of the camera module on the basis of the motion information; and a camera module controller that generates a camera module control signal for causing the camera module to perform a video recording operation on the basis of the determined video recording attribute and outputs the camera module control signal to the camera module. Accordingly, it is possible to enhance the processability of an object moving at a high velocity in a surveillance area to accurately detect the object by controlling a video recording attribute (a frame rate and/or an exposure value) of a camera module depending on the velocity of the object moving in the surveillance area.