Image Capture Control Method for Stabilization Without Hardware
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Solution Overview
Problem
Conventional image capture devices face challenges in maintaining image quality due to device movement, especially in smaller, lighter devices, as existing stabilization methods can introduce errors from environmental factors and require additional hardware, potentially causing lens collisions and increased volume.
Innovation Solution
An image capture control method that adjusts the shutter exposure period and sensitivity based on environmental data, using a main control unit to modify these parameters when the initial exposure period exceeds a predetermined threshold, thereby stabilizing images without increasing hardware architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a sensor and compensation lens group are added to stabilize images, then image stability is improved, but device volume and complexity increase
Solution Approach 1:
The patent replaces the mechanical image stabilization system (sensor detecting movement, compensation lens group physically adjusting) with an electronic solution. The image capture unit captures images at different exposures, and the control unit processes these images electronically to achieve stabilization without physical movement of optical components.
Solution Approach 2:
The patent captures multiple copies of the same scene at different exposure times (first exposure image and second exposure image). These multiple image copies are then processed and combined to achieve the stabilization effect, avoiding the need for physical stabilization hardware.
2Illumination intensity
If the shutter exposure period is extended to capture more light, then image brightness is improved, but device movement during exposure increases
Solution Approach 1:
The patent uses periodic action by capturing images at different exposure times (first exposure and second exposure with different durations). This periodic variation in exposure allows the system to accumulate sufficient light while maintaining stability through electronic processing of the multiple captured images.
Solution Approach 2:
The patent changes the exposure time parameter between different image captures (first exposure image with initial exposure period, second exposure image with adjusted exposure period). By varying this parameter across multiple captures and processing them together, the system achieves both adequate brightness and stability.
Data Source
AI summary
An image capture control method and apparatus thereof is provided. The method includes capturing automatic exposure environmental data by an image capture unit, calculating initial shutter exposure period and initial sensitivity in accordance with the environmental data, and determining in accordance with the specific mode. Under the specific mode, capturing the image based on the initial shutter exposure period and initial sensitivity when the initial shutter exposure period is less than or equal to the predetermined period. Modify parameters for image capture to obtain final shutter exposure period and final sensitivity when the initial shutter exposure period exceeds the predetermined period. Capturing the image with the final shutter exposure period (t′) and processing the captured image with the final sensitivity (ISO′).