Live-View Exposure Control for Multi-Image Synthesis
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Solution Overview
Problem
Existing imaging technologies lack the ability to conveniently control exposure time and other settings for synthesized images, leading to difficulties in managing image blur and meeting user-defined imaging conditions.
Innovation Solution
An image processing device that includes a display control unit to show exposure time, number of images, and total exposure time on a live-view display, allowing users to easily set and adjust these parameters during image synthesis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple images are captured and synthesized to reduce noise and blur, then image quality is improved, but the complexity of controlling exposure time and synthesis parameters increases
Solution Approach 1:
The patent combines multiple exposure time settings into a single synthesized image output, merging the control of individual exposure parameters with the overall synthesis result. This allows users to capture multiple images with different exposure times and automatically synthesize them into one high-quality image, reducing the need for manual adjustment of each parameter separately.
Solution Approach 2:
The system automatically adjusts exposure time parameters across multiple captured images based on predefined synthesis algorithms. By changing the exposure time parameter for each individual image capture while maintaining a unified synthesis goal, the system optimizes image quality without requiring users to manually control each parameter.
2Manufacturing precision
If exposure time per image is shortened to reduce blur in individual images, then image sharpness is improved, but the total exposure time for synthesis increases
Solution Approach 1:
The patent employs periodic capture of multiple images with short exposure times, where each image is captured in rapid succession with minimal intervals. This periodic action allows the system to accumulate sufficient light information across multiple frames while maintaining sharpness in each individual image, ultimately producing a high-quality synthesized image without excessive total exposure time.
3Manufacturing precision
If the number of images to be synthesized is increased to improve image quality, then noise reduction is enhanced, but the processing time and complexity increase
Solution Approach 1:
The system implements a balanced approach by capturing a specific number of images (excessive enough to ensure noise reduction but not so many as to cause excessive processing delays). This partial action principle allows the system to achieve sufficient noise reduction by synthesizing a moderate number of images, optimizing the balance between image quality and processing efficiency.
Data Source
AI summary
A digital camera includes: a display control unit that displays an image acquired by an imaging unit and setting values regarding the imaging on a display unit at the time of live-view image; and an image synthesis unit that synthesizes a plurality of images acquired by the imaging unit on the basis of the setting values, the display control unit displaying two or more setting values out of an exposure time per image out of the images to be synthesized, the number of images to be synthesized, and a total exposure time of the images to be synthesized, in an image synthesis mode in which a plurality of images are captured and synthesized.