Dual-Camera Frame Selection for Flicker-Corrected Video
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Solution Overview
Problem
Flicker phenomena occur in videos captured under fluorescent lighting due to differences in brightness between frames, which degrade user subjective image quality, particularly with global shutter and rolling shutter methods.
Innovation Solution
A method and device using multiple cameras with synchronized settings to capture images at specific intervals, selecting and combining frames based on light intensity thresholds to generate flicker-corrected video.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If images are captured using a single camera under fluorescent lighting, then the capture process is simple, but flicker appears due to brightness differences between frames
Solution Approach 1:
The patent divides the image capture task into multiple segments by using multiple cameras (first camera and second camera) with different capture periods. Each camera captures images at different intervals, and the system segments the final video into different time periods, selecting appropriate images from each camera based on flicker conditions to maintain consistent brightness throughout the video.
2Reliability
If a single camera is used to capture video, then the system is simple, but flicker degrades image quality due to brightness variations between frames
Solution Approach 1:
The patent changes the capture period parameter by using two different cameras with different capture intervals (first period and second period). This parameter variation allows the system to capture images at optimal moments to avoid flicker, and the selection unit chooses images based on their capture timing relative to the fluorescent lighting cycle, thereby maintaining consistent brightness.
3Ease of operation
If images are captured at fixed intervals, then the capture process is straightforward, but flicker appears when brightness thresholds are not met
Solution Approach 1:
The patent implements a feedback mechanism where the selection unit continuously monitors whether captured images meet the brightness threshold requirements. Based on this feedback, the system dynamically selects appropriate images from either the first or second camera, ensuring that only images with acceptable brightness levels are used in the final video, thereby maintaining reliability while keeping the capture process simple.
Data Source
AI summary
Provided is an electronic device including a first camera, a second camera, memory configured to store at least one instruction, and at least one processor, wherein the at least one instruction, when executed by the at least one processor, causes the electronic device to obtain, by using the first camera, a first image captured at intervals of a first period, obtain, by using the second camera, a second image captured at intervals of a second period, select the first image, based on a light intensity value of the first image being less than or equal to a first threshold and greater than or equal to a second threshold, select the second image captured prior to the first image being captured, based on the light intensity value being greater than the first threshold or less than the second threshold, and generate a video based on the selected first image or the selected second image.