Drone Camera Zoom Control for Focus and Propeller Avoidance
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Solution Overview
Problem
Conventional techniques lack effective methods for controlling moving apparatuses, such as drones, when an image capturing apparatus is mounted, considering the mutual influences between the two, which can lead to issues like focus failure and propeller appearance in shots.
Innovation Solution
A control device that obtains lens information, including zoom position, and controls the movement of the drone based on this information to prevent focus failure and propeller appearance in images, by adjusting the drone's position and zooming speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the drone moves closer to the subject to capture better images, then the image quality improves, but focus failure occurs due to the minimum object distance constraint
Solution Approach 1:
The system dynamically changes the zoom magnification parameter based on the distance between the drone and the subject. When the drone is close to the subject, the zoom magnification is reduced to maintain focus accuracy. When the drone is farther away, the zoom magnification is increased to maintain image quality. This parameter adaptation resolves the contradiction between image quality and focus accuracy.
2Measurement precision
If the drone hovers too close to the subject, then detailed images can be captured, but the propeller appears in the shot
Solution Approach 1:
The system replaces mechanical positioning (purely relying on drone distance control) with a combined optical-mechanical system. By using zoom magnification control in conjunction with distance control, the system achieves detailed imaging without requiring the drone to hover extremely close, thereby avoiding propeller appearance in the shot.
3Measurement precision
If the zoom magnification is increased to capture distant subjects, then the field of view is reduced, but the minimum object distance constraint causes focus failure
Solution Approach 1:
The system uses feedback control by continuously monitoring the distance between the drone and the subject, and adjusting the zoom magnification accordingly. The control unit receives distance information and automatically adjusts the zoom magnification to maintain focus accuracy, creating a closed-loop control system that resolves the contradiction between zoom magnification and focus accuracy.
4Productivity
If the drone moves faster to reach the shooting position, then the shooting efficiency improves, but the image stability deteriorates
Solution Approach 1:
The system performs preliminary hovering at the target position before capturing images. This preliminary action allows the drone to stabilize its position and reduce vibrations caused by movement, thereby maintaining image stability while still achieving efficient shooting by quickly reaching the position first.
Data Source
AI summary
There is provided a control device that controls a moving apparatus to which an image capturing apparatus including a zoom lens is mounted, the device comprising: an obtaining unit configured to obtain lens information including information pertaining to a zoom position of the zoom lens; and a control unit configured to control movement of the moving apparatus based on the lens information.