Dynamic Cropping Area for Camera Shake Stabilization
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Solution Overview
Problem
Conventional electronic image stabilization systems face challenges in setting the optimal size of the cropping area, as a larger cropping area results in higher resolution but a smaller buffer zone, making camera shake correction difficult, while a smaller cropping area secures more buffer zone but decreases resolution.
Innovation Solution
An image pickup apparatus that includes an image pickup unit, a camera shake detection unit, and an electronic image stabilization unit, which adjusts the size of the cropping area based on detected camera shake angular velocity, allowing for dynamic changes in the cropping area and buffer zone to optimize image stabilization and resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the cropping area is made large to achieve high resolution, then the resolution in the cropping area is improved, but the buffer zone becomes small making camera shake correction difficult
Solution Approach 1:
The patent applies dynamics by making the cropping area size adjustable rather than fixed. The system dynamically changes the cropping area size based on detected camera shake conditions - using a larger cropping area when shake is minimal to maximize resolution, and reducing the cropping area when camera shake is detected to preserve buffer zone for correction. This dynamic adjustment resolves the contradiction between maintaining high resolution and ensuring correction capability.
Solution Approach 2:
The patent changes the parameter of cropping area size based on camera shake conditions. By monitoring angular velocity from the camera shake detection unit, the system adjusts the cropping area dimension parameter - increasing it when shake is low to improve resolution, and decreasing it when shake is high to maintain sufficient buffer zone for effective camera shake correction.
2Adaptability or versatility
If the cropping area is made small to secure buffer zone for camera shake correction, then the camera shake correction capability is improved, but the resolution in the cropping area is decreased
Solution Approach 1:
The system dynamically adjusts the cropping area size based on real-time camera shake detection. When camera shake is detected, the system reduces the cropping area size to secure sufficient buffer zone for correction. When camera shake is minimal, the system increases the cropping area size to maximize resolution. This dynamic behavior allows the system to optimize for either correction capability or resolution depending on current conditions.
Solution Approach 2:
The patent modifies the cropping area size parameter in response to camera shake conditions. The system uses angular velocity data from the camera shake detection unit to determine when to change the cropping area parameter - reducing it when shake is present to ensure adequate buffer zone, and increasing it when shake is absent to improve resolution.
3Adaptability or versatility
If the buffer zone is increased to enable sufficient camera shake correction, then the camera shake correction capability is improved, but the cropping area size is reduced decreasing resolution
Solution Approach 1:
The patent implements a dynamic system where the cropping area size is adjusted based on detected camera shake conditions. The buffer zone size is indirectly controlled by changing the cropping area size - when camera shake is detected, the cropping area is reduced to increase the buffer zone for correction. When camera shake is minimal, the cropping area is expanded to maximize resolution, thereby dynamically balancing correction capability and resolution.
Solution Approach 2:
The system changes the cropping area size parameter in response to camera shake conditions. By monitoring angular velocity, the system determines when to modify the cropping area parameter - reducing it to increase buffer zone when shake is present, and increasing it to improve resolution when shake is absent.
Data Source
AI summary
Provided is an image pickup apparatus that includes: an image pickup unit configured to generate picked-up image data by an image pickup process; a camera shake detection unit configured to detect an angular velocity generated by camera shake when shooting; an electronic image stabilization unit configured to perform an image stabilization process by moving a position of a cropping area in the picked-up image data, based on the angular velocity detected by the camera shake detection unit; and an area changing unit configured to change a size of the cropping area with respect to the picked-up image data, based on the angular velocity detected by the camera shake detection unit.