Lens Displacement Control for Panoramic Image Stabilization
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Solution Overview
Problem
Existing image capturing technologies face challenges in generating high-quality panoramic images due to image blurring caused by camera shake during the movement of the shooting direction, which affects the resolution and quality of captured images.
Innovation Solution
An image capturing apparatus with a shake correction function that displaces the lens unit and/or imaging device in response to camera motion, adjusting the displacement amount based on exposure time and shutter speed to minimize shake during exposure, thereby enhancing the quality of captured images for panoramic image generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the shooting direction is moved to capture panoramic images, then the imaging coverage is improved, but image blurring occurs due to camera shake
Solution Approach 1:
The lens unit or imaging device is displaced in advance before the exposure time period starts. The control unit calculates the required displacement amount based on the shooting direction movement and exposure duration, then pre-positions the optical components to counteract anticipated shake, ensuring the optical image remains stable on the imaging surface throughout the exposure.
Solution Approach 2:
The system dynamically adjusts the displacement amount of the lens unit or imaging device based on real-time parameters including exposure time period length and shooting direction movement characteristics. This dynamic adjustment allows the shake correction mechanism to adapt to varying capture conditions while maintaining image quality across different panoramic shooting scenarios.
2Illumination intensity
If the exposure time period is extended to capture moving subjects, then the image brightness is improved, but image blurring increases due to camera shake
Solution Approach 1:
The lens unit or imaging device is displaced in advance before the exposure time period starts. The control unit calculates the required displacement amount based on the shooting direction movement and exposure duration, then pre-positions the optical components to counteract anticipated shake, ensuring the optical image remains stable on the imaging surface throughout the exposure.
Solution Approach 2:
The system varies the displacement amount according to the exposure time period length. For longer exposures, larger displacement amounts are applied to compensate for increased shake vulnerability, while shorter exposures use smaller displacement amounts. This parameter-based adjustment allows the system to maintain image sharpness across different exposure durations while capturing sufficient light.
3Productivity
If the sweep velocity is increased to capture panoramic images faster, then the productivity is improved, but image blurring occurs due to excessive shake
Solution Approach 1:
The lens unit or imaging device is displaced in advance before the exposure time period starts. The control unit calculates the required displacement amount based on the shooting direction movement and exposure duration, then pre-positions the optical components to counteract anticipated shake, ensuring the optical image remains stable on the imaging surface throughout the exposure.
Solution Approach 2:
The system adjusts the displacement amount based on the sweep velocity characteristics. For faster panoramic captures, the system calculates appropriate displacement amounts that compensate for the increased motion, allowing high-speed operation without sacrificing image quality. This enables the system to maintain image sharpness across different sweep velocities.
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 image blurring and maintains high image quality by correcting camera shake during panoramic image capture, ensuring minimal degradation in resolution and distortion, even when the exposure time is extended or sweep velocity is high.
Implementation Method 1
a shake correction function is provided in which an optical axis is displaced in response to a shake, and hence image blurring due to the shake is prevented
Data Source
AI summary
An image capturing apparatus includes a driving unit for displacing one of a lens unit and an imaging device with respect to an optical axis, and a controller for causing the driving unit to displace one of the lens unit and the imaging device, in response to the motion of the image capturing apparatus. When, with a shooting direction being moved, captured images are generated so that a panoramic image is generated from the captured images, the controller displaces the position of the lens unit or the imaging device at the start of exposure of each image to be captured in a direction based on a direction in which the shooting direction is moved. In addition, a displacement amount at the start of the exposure is set in response to the length of an exposure time period so that the displacement during the exposure time period becomes small and the quality of an image is improved.