Camera Shake Correction in Sequential Line Reading Imaging Sensors
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Solution Overview
Problem
Imaging apparatuses using CMOS sensors that read lines sequentially often produce corrected images with distortions due to camera shake, causing uncomfortable viewing experiences for users, as existing correction techniques fail to adequately address the rolling camera shake effectively.
Innovation Solution
An imaging apparatus equipped with a gyro sensor to detect angular velocity, a controller that determines the appropriate correction angle based on the detected velocity, and performs image processing to reduce the influence of camera shake, ensuring a proper correction even with sequential line reading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If camera shake correction is performed using sequential line reading imaging sensor, then camera shake influence is reduced, but image distortion occurs causing uncomfortable viewing experience
Solution Approach 1:
The patent applies dynamics by making the correction angle adaptive rather than fixed. The correction angle is determined based on the detected angular velocity and integration time, allowing the system to dynamically adjust the correction parameters according to the actual shake conditions, thereby reducing image distortion while maintaining correction effectiveness
Solution Approach 2:
The patent changes parameters by adjusting the correction angle based on angular velocity detection. Instead of using a fixed correction angle, the system varies the correction angle according to the detected shake intensity and duration, optimizing the balance between shake correction and distortion reduction
2Reliability
If correction angle is increased to reduce camera shake influence, then shake correction effectiveness improves, but image distortion increases causing uncomfortable viewing
Solution Approach 1:
The system dynamically adjusts the correction angle based on real-time angular velocity detection and integration time calculation, rather than applying a fixed or maximally aggressive correction angle, thereby adapting the correction strength to actual shake conditions
Solution Approach 2:
The system uses feedback from angular velocity detection to determine the appropriate correction angle. By continuously monitoring the shake characteristics and using this information to adjust the correction parameters, the system optimizes the balance between correction effectiveness and distortion minimization
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 suppresses the visual recognition of distortions in corrected images, reducing uncomfortable feelings for users by accurately addressing the rolling camera shake, especially in moving image capture modes.
Implementation Method 1
a gyro sensor to detect angular velocity
Data Source
AI summary
An imaging apparatus includes an image sensor that exposes a subject image by reading lines sequentially to generate an image; a detector that detects an angular velocity of a shake of the imaging apparatus; a controller that: (i) determines the detected angular velocity as an angular velocity for correction when the detected angular velocity is equal to or less than a predetermined angular velocity and, determines the predetermined angular velocity as the angular velocity for correction when the detected angular velocity is larger than the predetermined angular velocity; and (ii) corrects to reduce an influence of a shake to the image generated by the image sensor by image processing based on the determined angular velocity for correction.