Time-lapse Video Generation Using Motion Sensor Stability Analysis
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Solution Overview
Problem
Time-lapse videos are often marred by camera shaking, which becomes more pronounced when played faster, leading to blurred and unstable footage due to the inherent instability of the recording device.
Innovation Solution
An electronic apparatus equipped with motion sensors detects movement and stability during video recording, allowing for the conversion of video clips into time-lapse format based on stability analysis, with unstable clips either kept at original frame rate or removed, ensuring better video quality by filtering out shaky segments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If video clips are converted into time-lapse clips to achieve faster time representation, then the time-lapse effect is improved, but the shaking and blurring become more pronounced
Solution Approach 1:
The patent applies local quality by differentiating the processing of video clips based on their stability characteristics. Stable clips are converted to time-lapse format with accelerated playback, while unstable clips are either kept at normal speed or removed entirely. This selective processing ensures that each portion of the video receives the appropriate treatment based on its local stability quality, resolving the contradiction between time acceleration and shaking reduction.
Solution Approach 2:
The patent segments the video into multiple clips and evaluates the stability of each clip independently using motion sensors. By dividing the video content and applying different processing strategies to different segments (time-lapse conversion for stable segments, normal playback or removal for unstable segments), the system achieves overall improved video quality while maintaining the time-lapse effect where applicable.
2Ease of operation
If all video clips are converted to time-lapse format to maintain consistent playback style, then the time-lapse effect is uniform, but the video quality deteriorates due to including shaky segments
Solution Approach 1:
The patent implements dynamic processing by continuously monitoring the stability of video clips and adjusting the processing strategy in real-time. Rather than applying a static uniform conversion to all clips, the system dynamically evaluates each clip's stability characteristics and adapts the processing approach accordingly, switching between time-lapse conversion, normal playback, and removal based on the measured stability of each segment.
3Measurement precision
If motion sensors are used to detect stability during recording, then the video quality control is improved, but the device complexity increases
Solution Approach 1:
The patent applies self-service by utilizing the motion sensors already present in modern electronic devices (smartphones, tablets, cameras) to detect device movement and stability during video recording. Rather than adding specialized external equipment, the system leverages the device's own built-in sensors to measure acceleration and movement, automatically evaluating clip stability and making processing decisions without requiring additional complex measurement apparatus.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method effectively generates time-lapse videos with improved quality by identifying and mitigating the impact of camera instability, resulting in smoother and clearer playback.
Implementation Method 1
a movement of the electronic apparatus is detected by the at least one motion sensor while a video is recorded by the image capturing device
Data Source
AI summary
A method and an electronic apparatus for generating a time-lapse video and a recording medium using the method are provided. In the method, a movement of the electronic apparatus is detected by the at least one motion sensor while a video is recorded by the image capturing device. A detected movement is analyzed to determine a stability of the electronic apparatus for each of a plurality of time intervals during which the video is recorded. At least one clip of the video is converted into a time-lapse video according to a determined stability of the electronic apparatus associated with each of the plurality of the time intervals during which the clip of the video is recorded.