Dynamic Exposure Adjustment for Hand Shake Reduction
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Solution Overview
Problem
Current image capturing devices face challenges in producing high-quality images due to hand shake-induced vibrations, which lead to blurred images and inefficient multi-exposure image integration methods that result in noise and longer processing times.
Innovation Solution
An image capturing device with a processing module that dynamically adjusts exposure time for each temporary image based on photographic conditions, including vibration data and image clarity, to generate a stored image with improved quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple images are captured for multi-exposure integration, then image quality can be improved through noise reduction, but processing time increases significantly
Solution Approach 1:
The patent implements dynamic exposure time adjustment where the exposure time for each temporary image is adaptively modified based on vibration detection results. The system transitions from static to dynamic control, allowing the image capturing process to adapt in real-time to hand shake conditions, thereby optimizing the balance between image quality and processing time.
Solution Approach 2:
The system incorporates vibration detection feedback mechanisms that monitor hand shake conditions during image capture and use this information to adjust exposure times for subsequent images. This feedback loop enables the system to respond to actual vibration conditions rather than using fixed exposure parameters, improving both image quality and processing efficiency.
2Illumination intensity
If exposure time is increased to capture more light, then image brightness is improved, but hand shake-induced blurriness increases
Solution Approach 1:
The system dynamically adjusts exposure time based on real-time vibration detection, allowing the exposure duration to adapt to hand shake conditions. When vibration is detected, the exposure time is reduced to prevent motion blur, while still capturing sufficient light through multi-exposure integration of multiple shorter-exposure images.
Solution Approach 2:
The patent changes the exposure time parameter adaptively based on vibration conditions. Instead of using a fixed exposure time, the system modifies this critical parameter in response to detected hand shake, thereby optimizing the trade-off between image brightness and image clarity under varying vibration conditions.
3Manufacturing precision
If sensitivity of photo-sensor is elevated to reduce exposure time, then hand shake impact is reduced, but image noise increases
Solution Approach 1:
The system combines multiple temporary images with reduced exposure times into a single integrated image. By merging multiple short-exposure images through the integration module, the system achieves the hand shake resistance benefits of short exposure while maintaining adequate signal-to-noise ratio through the combined data from multiple captures.
Solution Approach 2:
The patent implements continuous multi-exposure capture where multiple temporary images are acquired in rapid succession with reduced exposure times. This continuous capturing process ensures that hand shake effects are minimized in each individual image while the cumulative effect of multiple images provides sufficient signal strength, reducing the need for high sensor sensitivity.
Data Source
AI summary
The present invention discloses an image capturing device and an exposure time adjusting method thereof. The image capturing device comprises an image capturing module, a processing module and an image integrated module. The image capturing module is used to capture a plurality of temporary images. While the image capturing module captures the temporary images, the processing module dynamically adjusts the exposure times of the temporary images according to a predetermined file, a plurality of analysis results of the temporary images or the vibration information sensed by a vibration sensor. Next, the image integrated module controlled by a control module in the processing module integrates the temporary images to generate a stored image.