Camera Image Compositing for High-Quality Hyper-Lapse Video
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Solution Overview
Problem
Existing electronic devices face challenges in efficiently obtaining video data by compressing images taken over a long duration into a shorter duration while maintaining image quality and reducing file size.
Innovation Solution
An electronic device and method that utilize a camera with an image sensor and processor to identify maximum exposure time, obtain images based on this time interval, synthesize frames, and configure them as subsequent frames to generate hyper-lapse video data, allowing for efficient compression and representation of object trajectories over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If images are taken over a long duration and compressed into shorter duration video, then video file size is reduced, but image quality may deteriorate
Solution Approach 1:
The patent segments the video generation process into distinct phases: capturing a reference frame, capturing subsequent frames with reduced exposure time, and selectively synthesizing frames only when motion detection thresholds are met. This segmentation allows quality preservation in critical frames while reducing overall data volume.
Solution Approach 2:
The patent dynamically changes exposure time parameters based on motion detection results. When motion exceeds a threshold, the system adjusts exposure time to capture necessary detail; when motion is minimal, it uses shorter exposure times to reduce data volume, thereby maintaining quality while compressing file size.
2Manufacturing precision
If exposure time is increased to capture more light and detail, then image quality improves, but frame rate and video duration efficiency decreases
Solution Approach 1:
The patent implements periodic full-exposure frame capture interspersed with shorter exposure frames. Full-exposure reference frames are captured at intervals to maintain quality benchmarks, while shorter exposure frames fill temporal gaps, achieving both quality and frame rate objectives.
Solution Approach 2:
The patent applies partial action by using reduced exposure time for frames where full exposure is not necessary (when motion is minimal). This selective approach applies maximum exposure only when needed for quality, thereby improving overall frame rate while maintaining acceptable image quality.
3Manufacturing precision
If all frames are captured with maximum quality settings, then image quality is maintained, but video file size increases
Solution Approach 1:
The patent extracts and utilizes only the essential information needed for quality representation. By detecting motion between frames and synthesizing only when necessary, it extracts the minimal required data to maintain perceived quality while discarding redundant information, thereby reducing file size.
Solution Approach 2:
The patent creates synthesized frame copies by combining reference frame data with motion-detected changes from subsequent frames. This copying approach reconstructs quality frames on-demand rather than storing all original high-quality frames, reducing overall data storage requirements while maintaining visual fidelity.
Data Source
AI summary
An electronic device is provided. The electronic device includes a camera including an image sensor, memory, comprising one or more storage media, storing one or more computer programs, and one or more processors communicatively coupled to the camera and the memory, wherein the one or more computer programs include computer-executable instructions that, when executed by the one or more processors individually or collectively, cause the electronic device to identify, based on capability information of the image sensor, maximum exposure time of the camera as a first time interval, obtain, based on exposure time set as the first time interval, a first image using the camera, identify a second image constituting a first frame stored in the memory, obtain, based on synthesizing the first image and the second image, a third image, and, based on configuring the third image as a second frame which is next frame after the first frame, obtain video data consisting of a plurality of frames including the first frame and the second frame.