Super Slow-Motion Camera Recording with Adaptive ROI Thresholds
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Solution Overview
Problem
Portable electronic devices face limitations in super slow motion video recording due to memory and processor constraints, often erroneously initiating recording based on their own movement instead of the object's movement in the region of interest, leading to suboptimal video quality.
Innovation Solution
An electronic device adjusts conditions for super slow motion video recording based on illuminance and movement information, distinguishing between its own movement and the object's movement within the region of interest to accurately initiate recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the electronic device uses a fixed threshold to detect object movement in the ROI, then the detection process is simple, but the device erroneously initiates recording based on its own movement instead of the object's movement
Solution Approach 1:
The patent applies dynamics by making the threshold adjustable rather than fixed. The threshold is dynamically changed based on the detected movement of the electronic device itself. When device movement is detected, the threshold is adjusted to a higher value to prevent false triggering, and when no device movement is detected, the threshold returns to a lower value for sensitive object detection. This dynamic adjustment resolves the contradiction between detection accuracy and preventing false positives.
Solution Approach 2:
The patent implements feedback by using the detected movement information of the electronic device to adjust the threshold for object movement detection. The system continuously monitors device movement and uses this information to modify the detection threshold in real-time. This feedback loop enables the system to distinguish between device-induced image changes and actual object movement, improving measurement precision while maintaining manageable complexity.
2Reliability
If the electronic device records super slow motion video continuously, then no movement detection is needed, but memory and processor limitations are exceeded
Solution Approach 1:
The patent applies partial action by activating super slow motion video recording only when specific conditions are met - namely, when object movement exceeding the threshold is detected in the ROI. Instead of continuous recording, the system selectively records only when movement is detected, significantly reducing memory and processor requirements while maintaining reliable video quality for actual events. This selective approach resolves the contradiction between recording reliability and resource consumption.
3Manufacturing precision
If the electronic device increases the frame rate for super slow motion recording, then video quality improves, but processing capability requirements increase beyond portable device limits
Solution Approach 1:
The patent applies periodic action by alternating between normal frame rate recording and high frame rate super slow motion recording. The system operates at normal frame rate most of the time, then periodically switches to high frame rate mode when object movement is detected, and returns to normal mode when movement ceases. This periodic switching enables high video quality when needed while keeping average processor power consumption within portable device limits.
Data Source
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AI summary
An electronic device may comprise a camera, a sensor circuit, a memory, and a processor configured to obtain a plurality of first images including a region of interest (ROI) based on a first frame rate using the camera, detect a movement of the electronic device using the sensor circuit, identify a threshold related to a movement of the ROI based on the movement of the electronic device, wherein the threshold related to a movement of the ROI is identified as a first threshold, and the threshold related to the movement of the ROI is identified as a second threshold larger than the first threshold, obtain a plurality of second images based on a second frame rate larger than the first frame rate in response to an object moving at the first threshold or the second threshold in the ROI, and provide a video related to the object.