Auto-focus compensation method for image capturing devices
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Solution Overview
Problem
Image capturing devices often fail to achieve optimal focus in dark scenes, resulting in blurred images due to the auto-focus procedure's inability to find the best focusing position under all conditions.
Innovation Solution
An auto-focus compensation method that includes a touch screen interface allowing users to adjust the focus after an initial auto-focus procedure, using modules to detect touch operations and display an adjustment interface for fine-tuning the image capture settings, such as auto-focus value and exposure, to ensure maximum clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If auto-focus procedure is used to capture images, then capturing speed is improved, but image clarity deteriorates in dark scenes
Solution Approach 1:
The system performs preliminary auto-focus to quickly obtain a focused image, then uses touch operation detection to identify when manual adjustment is needed. The staying time detection prepares the system to switch to manual mode when the user touches the screen for an extended period, ensuring both speed and clarity are maintained through proactive preparation.
Solution Approach 2:
The system incorporates feedback through touch operation detection and staying time measurement. When the user touches the screen and the staying time exceeds the threshold, the system responds by switching from auto-focus to manual focus adjustment mode, allowing the user to correct any focus issues and ensure maximum clarity.
2Ease of operation
If auto-focus procedure is used, then operation simplicity is improved, but focus accuracy deteriorates
Solution Approach 1:
The system provides self-service by automatically detecting when manual adjustment is needed through touch operation monitoring. When the user touches the screen and the staying time exceeds the threshold, the system automatically switches to manual focus mode without requiring additional commands, allowing users to easily correct focus issues while maintaining simplicity.
Solution Approach 2:
The focus adjustment mechanism is dynamic, automatically switching between auto-focus and manual focus modes based on user interaction. The system monitors touch operations and staying time in real-time, adapting the focus mode dynamically to balance ease of operation with focus accuracy according to user needs.
Data Source
AI summary
An auto-focus compensation method, adapted to an image capturing device having a touch screen, includes the following steps. First, a first touch operation performed on a first object displayed on the touch screen is detected. Next, an auto-focusing procedure is performed so as to obtain a focused image. A staying time of the first touch operation on the first object is accumulated and determined whether it exceeds a time threshold. When the staying time exceeds the time threshold, an adjustment interface is displayed on the touch screen, and a second touch operation performed on the adjustment interface is detected. The focused image is adjusted according to the second touch operation, and a new focused image is thus obtained and captured. An image capturing device is also provided in the invention to implement the aforementioned auto-focus compensation method.