Imaging Apparatus Flicker Reduction via Shutter Speed Control
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Solution Overview
Problem
Existing imaging apparatuses experience luminance noise and flicker in captured images due to periodic changes in illumination, particularly when capturing display devices, and existing solutions are limited by the difficulty in adjusting AC frequencies or display periods.
Innovation Solution
An imaging apparatus equipped with an imaging element, a controller, and memory, which detects flicker in captured images, stores flicker characteristics, frame rates, and shutter speeds, and adjusts the shutter speed to reduce flicker, allowing for improved image quality without altering the imaging apparatus settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the shutter speed is adjusted to reduce flicker, then image quality is improved, but the complexity of controlling the imaging apparatus increases
Solution Approach 1:
The controller detects flicker in the captured image and uses this feedback to automatically adjust the shutter speed. The system monitors the captured image for flicker characteristics, determines the AC power frequency based on detected flicker patterns, and adjusts the shutter speed accordingly to eliminate flicker, creating a closed-loop control system that improves image quality without requiring manual intervention
Solution Approach 2:
The imaging apparatus performs self-diagnosis and self-adjustment by automatically detecting flicker in captured images, determining the power frequency from the flicker pattern, and adjusting its own shutter speed settings. This self-service capability eliminates the need for external intervention or complex user configuration, resolving the contradiction between improved image quality and control complexity
2Manufacturing precision
If the AC frequency of the light source is adjusted to mitigate flicker, then image quality is improved, but the adaptability of the system decreases
Solution Approach 1:
Instead of adjusting the light source frequency to match the camera's shutter speed, the system inverts the approach by keeping the light source frequency unchanged and adjusting the shutter speed to match the detected light source frequency. This inversion allows the system to adapt to various AC power frequencies (50Hz, 60Hz, or other regions) without requiring changes to the illumination system, thereby maintaining both image quality and system adaptability
3Manufacturing precision
If the period during which an image is displayed is changed to reduce flicker, then image quality is improved, but the ease of operation decreases
Solution Approach 1:
The imaging apparatus automatically detects flicker in captured images and performs self-adjustment of the shutter speed based on the detected flicker characteristics. This self-service mechanism eliminates the need for user intervention to change display periods or other complex settings, thereby improving image quality while maintaining ease of operation through automatic adaptation
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 solution effectively reduces flicker in captured images, thereby enhancing image quality and allowing for automatic flicker reduction without requiring changes to the imaging apparatus settings.
Implementation Method 1
The imaging element is configured to convert light received by opening and closing the shutter unit into an electric signal
Data Source
AI summary
An imaging apparatus includes an imaging element, an imaging driver, a controller, and a memory. The imaging driver is configured to drive the imaging element. The controller is configured to detect a flicker in an image captured by the imaging apparatus. The memory is configured to, in response to the flicker being detected, store data on a characteristic of the flicker, a first frame rate, and a first shutter speed of the imaging element.