Camera Controller Short-Exposure Shake Suppression
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Solution Overview
Problem
Existing photography techniques fail to effectively suppress camera shake during image capture, leading to suboptimal image quality even when multiple shots are taken.
Innovation Solution
A controller system that performs short-time photographing operations with reduced exposure time and corrects image data using brightness information from normal exposure time images, minimizing shake and exposure deficiencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a normal exposure time is used to ensure sufficient light exposure, then image brightness is improved, but camera shake influence increases
Solution Approach 1:
The patent segments the photographing process into two distinct operations: a short-time photographing operation with short exposure time to minimize camera shake, and a normal photographing operation with normal exposure time to capture sufficient light. The image correcting unit then processes the short-time captured image data using brightness information from the normal operation, effectively separating the functions of shake suppression and brightness capture.
Solution Approach 2:
The patent changes the exposure time parameter between the two photographing operations. The short-time operation uses a reduced exposure time parameter to suppress camera shake, while the normal operation uses a standard exposure time parameter to ensure adequate brightness. This parameter variation allows the system to optimize for different requirements in different operations.
2Object-affected harmful factors
If a short exposure time is used to suppress camera shake, then shake influence is reduced, but image brightness deteriorates due to insufficient light exposure
Solution Approach 1:
The patent introduces an intermediary approach where the normal photographing operation serves as a reference for brightness information. The image correcting unit uses the brightness data from the normal operation (which has sufficient light exposure) to correct and enhance the brightness of the short-time captured image data (which has suppressed shake), thereby mediating between the conflicting requirements of shake suppression and brightness maintenance.
3Measurement precision
If multiple normal photographing operations are performed to acquire correction information, then correction accuracy is improved, but photographing time increases
Solution Approach 1:
The patent performs preliminary action by capturing image data at normal exposure time before the short-time photographing operation. This preliminary normal operation provides the necessary brightness information and shake reference data that will be used to correct the subsequent short-time captured images, eliminating the need for multiple repeated normal operations.
Solution Approach 2:
The patent applies partial action by performing only one normal photographing operation to acquire sufficient correction information, rather than requiring multiple operations. The single normal operation provides adequate brightness reference and shake data for the correction process, avoiding excessive time consumption while maintaining correction accuracy.
Data Source
AI summary
A controller includes a photographing control unit controlling an image pickup unit taking a photograph of an object to perform a short-time photographing operation in which an exposure time is set shorter than a normal exposure time and an image correcting unit acquiring correction information for correcting image data taken in the short-time photographing operation and correcting the image data using the acquired correction information.