Photographing Apparatus Noise Reduction via Shot Optimization
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Solution Overview
Problem
Existing photographing systems that capture chemiluminescent or fluorescent light face a significant issue with noise increase when generating added images from multiple shots, leading to deterioration in image quality.
Innovation Solution
A photographing apparatus and method that calculate the minimum number of shots and unit exposure time periods based on set exposure conditions, allowing for the generation of an added image by combining images taken during these exposure periods, thereby minimizing noise and improving image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If images captured through a plurality of shots of the photography are added up to generate an added image, then the image quality of weak light subjects (chemiluminescent or fluorescent light) is improved, but noise of the added image increases linearly or according to the square root of the number of images, causing deterioration in image quality
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting exposure time periods and shot intervals based on signal strength analysis. The system changes the timing parameters of photography shots to optimize the balance between signal accumulation and noise reduction, thereby improving image quality without excessive noise increase.
Solution Approach 2:
The system implements dynamics by adaptively adjusting the photography process based on real-time signal analysis. The exposure time periods and shot intervals are dynamically modified according to the detected signal strength, allowing the system to optimize the addition of multiple images while controlling noise accumulation.
2Reliability
If the number of images added up is increased to improve the signal strength of the added image, then the image quality is improved, but the noise increases and deteriorates the image quality
Solution Approach 1:
The patent changes parameters by adjusting exposure time periods and shot intervals based on signal strength analysis. The system modifies these timing parameters to achieve optimal signal accumulation while preventing excessive noise increase, thereby resolving the contradiction between reliability and harmful factors.
Solution Approach 2:
The system employs feedback by analyzing the signal strength from captured images and using this information to adjust subsequent exposure time periods and shot intervals. This feedback mechanism allows the system to optimize the number of shots and exposure timing to maximize signal strength while controlling noise levels.
3Reliability
If multiple shots are taken with extended exposure time periods to capture weak light, then the signal strength is improved, but the total photography time increases
Solution Approach 1:
The patent applies segmentation by dividing the total exposure time into multiple unit exposure time periods with intervals between them. This segmentation allows the system to accumulate signal strength over an extended period while maintaining reasonable total photography time through efficient parallel processing and optimized timing.
Solution Approach 2:
The system implements continuity of useful action by continuously capturing images during the extended exposure period through multiple shots with intervals. The useful action of light capture continues throughout the extended period, maximizing signal accumulation while the system processes images efficiently to minimize total photography time.
Data Source
AI summary
There are provided a photographing apparatus and a photographing method capable of generating an added image by adding up images, the apparatus and the method achieving image quality of the added image. A photographing apparatus includes: a photographing section that photographs a subject a plurality of times sequentially; an image processing section that adds up images so as to generate an added image; and an exposure condition calculation section that calculates the minimum number of shots of the photography, which is for calculating a plurality of predetermined exposure time periods, and unit exposure time periods of the shots of the photography performed the minimum number of times, on the basis of set and input exposure conditions. The image processing section generates an added image of the plurality of exposure time periods by adding up images which are captured through the shots of the photography for the unit exposure time periods.