Imaging Device Synchronized Exposure for Moving Subjects
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Solution Overview
Problem
Prior imaging devices struggle to produce a composite image of a moving subject without blurring, as the combination of images with different exposure times results in an awkward composite image due to the crisp image from the second image signal overlaying on the blurred first image signal.
Innovation Solution
The imaging device incorporates an exposure unit, shooting processor, and image processor to control storage times and exposure information, ensuring that adjacent frames have equal exposure times, thereby generating a composite image that is unaffected by subject movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple image signals with different exposure times are combined to generate a composite image, then the brightness difference (contrast) is enlarged, but the composite image becomes awkward when the subject moves due to the overlay of crisp and blurred images
Solution Approach 1:
The patent changes the exposure time parameter from being different between first and second image signals to being equal. By setting the exposure time of the second image signal to match the first image signal's exposure time, the patent eliminates the blur discrepancy that causes awkward composite images while moving subjects, thereby resolving the contradiction between brightness difference enhancement and image quality
Solution Approach 2:
The patent dynamically adjusts the exposure time of the second image signal based on the exposure time of the first image signal. Instead of using a fixed shorter exposure time for the second signal, the system adapts the exposure time to match the first signal, allowing the composite image quality to maintain consistency even when subject movement occurs
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for the production of a clear, composite image that is not affected by subject movement, as the exposure times are synchronized to prevent blurring and enhance image quality.
Implementation Method 1
an imaging unit, a shooting processor, an exposure information setter, and an image processor. The imaging unit stores electric charges in response to an incident light for each frame, thereby generating an image signal
Data Source
AI summary
The imaging device comprises: an imaging unit, a shooting processor, an exposure information setter, and an image processor. The imaging unit stores electric charges in response to an incident light for each frame, thereby outputting an image signal. The shooting processor controls storage times, during which the imaging unit stores the electric charges. The exposure information setter sets first exposure control information that controls brightness of a first image signal generated based on a first storage time and second exposure control information that controls brightness of a second image signal generated based on a second storage time. The image processor combines the first and the second image signal. In the case where the first exposure control information satisfies a given condition, the exposure information setter sets the first and the second exposure control information such that storage times corresponding to frames adjacent to each other become equal to each other.