Imaging Device Bulb Exposure Background Light Trace Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional imaging devices struggle to accurately adjust exposure settings for bulb exposures, particularly in situations like shooting stars or fireworks, requiring advanced photography skills and often resulting in exposure failures due to variations in background brightness and light trail lengths.
Innovation Solution
The imaging device employs a combination of relatively bright and dark combination processing, along with difference image calculation, to generate and adjust image data in real-time, allowing for independent control of background and light trace brightness, enabling photographers to achieve intended exposure settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If continuous image data reading and simple cumulative addition is performed during bulb exposure, then exposure progression can be displayed, but the background brightness cannot be independently controlled and light trail length is determined by background brightness rather than photographer's intention
Solution Approach 1:
The patent segments the cumulative addition process into two distinct pathways: one for background image data and one for light trace image data. By separating the processing of stationary background elements from moving light sources, the system can independently control their respective brightness levels through different gain adjustments, resolving the contradiction between providing exposure feedback and maintaining control flexibility.
Solution Approach 2:
The patent introduces dynamic control mechanisms where the photographer can adjust background brightness and light trace brightness independently during the bulb exposure process. This dynamic adjustment capability allows real-time optimization of both background and light trail characteristics without being constrained by fixed cumulative addition rules.
2Manufacturing precision
If brightness levels are compared and only brighter pixels are selected for combination, then light trails can be traced with maintained background brightness, but the photographer cannot adjust background brightness independently
Solution Approach 1:
The patent divides the image processing into separate background processing and light trace processing streams. The background brightness is controlled through one gain parameter while light trace brightness is controlled through another gain parameter, allowing independent adjustment of each element's brightness to meet both precision control and adaptability requirements.
Solution Approach 2:
The patent applies different processing qualities to different regions of the image: background regions receive processing optimized for brightness control while light trace regions receive processing optimized for trail formation. This local quality differentiation enables precise control over light trails while maintaining adaptability in background brightness.
3Reliability
If aperture and ISO sensitivity are adjusted to match subject brightness, then proper exposure can be achieved, but the process requires long years of photography experience and advanced shooting technology
Solution Approach 1:
The patent implements an automatic exposure control system that performs real-time analysis of the captured image data and automatically adjusts exposure parameters. This self-service mechanism eliminates the need for photographers to have extensive experience in manual exposure calculation, while maintaining high exposure accuracy through algorithmic optimization.
Solution Approach 2:
The patent incorporates real-time feedback loops where the system continuously monitors the captured image quality and automatically adjusts aperture, ISO sensitivity, and exposure time to achieve optimal results. This feedback mechanism makes advanced photography accessible to beginners by automating the complex decision-making process that previously required years of experience.
Data Source
AI summary
An imaging device of the present invention, using image data that has been continuously read out at specified time intervals from an image sensor, generates dark image combination image data resulting from dark image combination using darker pixel data of each pixel of image data is generated, and bright image combination image data resulting from bright image combination using brighter pixel data of each pixel of image data, and difference output image data is generated from the bright image combination image data and the dark image combination image data. With the generated dark image combination image data as background image data and the difference output image data as light trace output image data, respective brightness is adjusted, and by subjecting each of the image data after adjustment to addition combination, it is possible to respectively independently adjust background brightness and light trace brightness.