Camera Image Stabilization Using Motion Vectors for Panning
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Solution Overview
Problem
Beginners find it challenging to set the correct shutter speed for panning shooting, as it requires adjusting the camera panning speed to match the subject's speed, and existing methods do not provide adequate assistance for determining the exposure period, leading to potential image blur or unsatisfactory dynamic effects.
Innovation Solution
An image capturing apparatus with a setting unit for background flow amount, a calculation unit to determine exposure period based on angular velocity and focal length, and a limitation unit to prevent excessive exposure, ensuring the background flows appropriately while maintaining subject clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If shutter speed is set too fast, then subject blur is reduced, but background flow is insufficient making the subject appear less dynamic
Solution Approach 1:
The system automatically adjusts the shutter speed parameter based on detected subject motion characteristics. By calculating the appropriate exposure time that allows background flow while maintaining subject clarity, the system optimizes the shutter speed parameter to resolve the contradiction between subject sharpness and background dynamic effect.
2Productivity
If shutter speed is set too slow, then background flows appropriately, but subject blur increases due to camera shake
Solution Approach 1:
The system uses feedback from the angular velocity sensor to detect camera shake and subject motion during the exposure period. Based on this feedback, the image stabilization apparatus adjusts the shutter speed to prevent subject blur while maintaining adequate background flow, resolving the contradiction between background dynamic effect and subject sharpness.
3Productivity
If manual adjustment of camera panning speed is used to match subject speed, then panning shooting can be achieved, but skill is required and it is difficult for beginners
Solution Approach 1:
The system performs self-service by automatically detecting subject motion and calculating the appropriate shutter speed without requiring manual intervention. The image stabilization apparatus uses the angular velocity sensor and motion detection algorithms to autonomously determine optimal exposure settings, making panning shooting accessible to beginners without requiring manual skill.
4Ease of operation
If automatic shutter speed setting is implemented, then ease of operation improves, but accuracy of exposure period determination may be compromised
Solution Approach 1:
The system replaces manual mechanical adjustment with an automated electronic control system that uses angular velocity sensors and computational algorithms to determine shutter speed. This substitution maintains high precision in exposure period determination while significantly improving ease of operation, as the electronic system can process sensor data and calculate optimal settings faster and more accurately than manual estimation.
Data Source
AI summary
An image capturing apparatus comprising: an image sensor that shoots a subject image that is incident thereon via an imaging optical system; a setting unit that sets a background flow amount in panning shooting; a calculation unit that calculates, in panning shooting, an exposure period of exposing the image sensor from the background flow amount, an angular velocity detected by a detection unit that detects an angular velocity of vibration, and a focal length of the imaging optical system, so as to obtain the background flow amount set by the setting unit; and a limitation unit that, if the exposure period calculated by the calculation unit is greater than or equal to a predetermined threshold value, limits the exposure period to the threshold value.