Camera Frame Image Selection for Double-Depression Shutter Timing
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Solution Overview
Problem
Existing image-capturing devices may fail to securely save images captured immediately before and after a second shutter release, especially when a 'double-depression operation' is performed, as they do not account for the user's intention to retry the shutter release.
Innovation Solution
An image-capturing device with an instruction unit, image sensor, storage unit, save candidate designation unit, and control unit that designates frame images obtained before and after a photographing instruction signal as save candidates, allowing for optimal selection and saving of images even during a second shutter release, by controlling the save candidate designation based on predetermined time intervals and image characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera saves images captured before and after a first shutter release, then images are secured for normal photography, but images captured before and after a second shutter release (double-depression operation) are not secured
Solution Approach 1:
The camera system dynamically adjusts its image saving behavior based on the timing and sequence of shutter release operations. When a second shutter release is detected within a predetermined time period after the first, the system switches to a different saving mode that captures images before and after the second release, thereby adapting to the user's retry operation while maintaining reliability for both normal and corrective photography scenarios
Solution Approach 2:
The system changes the parameter of save candidate designation based on the operation mode. In normal mode, it designates A images before and B images after the first shutter release. When double-depression operation is detected, it designates images before and after the second shutter release, effectively changing the temporal parameters of image capture to match the user's operational intent
2Reliability
If multiple frame images are saved to ensure capturing the intended moment, then the likelihood of capturing the optimal moment improves, but memory space consumption increases
Solution Approach 1:
The system implements a balanced approach by designating a specific number A of frame images before the shutter release and B frame images after, rather than saving all possible frames. This partial action approach ensures sufficient coverage to capture the intended moment while avoiding excessive memory consumption, achieving an optimal balance between reliability and resource efficiency
Data Source
AI summary
An image-capturing device includes: an instruction unit that issues a photographing instruction signal; an image sensor that obtains frame images over predetermined time intervals; a storage unit into which a plurality of frame images obtained via the image sensor are sequentially stored; a save candidate designation unit that designates a plurality of frame images obtained before and after an output of the photographing instruction signal among a plurality of frame images stored in the storage unit as save candidate images that may be saved into a recording medium; and a control unit that controls the save candidate designation unit so as to designate as the save candidates a plurality of frame images obtained before and after a second photographing instruction signal issued within a predetermined length of time following the output of the photographing instruction signal.