Correction Image Creation Device Noise Cancellation
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Solution Overview
Problem
Existing imaging devices require significant time and precision to obtain a correction value for offset correction, and there is a need for a technique to easily create a correction image with minimal noise.
Innovation Solution
A correction image creation device that acquires original images, determines if external noise is present, and cancels the creation of the correction image if noise is detected, ensuring that only noise-free images are used for offset correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional offset correction methods are used to obtain precise correction values, then measurement precision is improved, but loss of time increases due to the significant time required to acquire correction values
Solution Approach 1:
The patent performs offset correction acquisition in advance during periods when imaging is not required. The correction image creation unit acquires original images and creates correction images beforehand, storing them for later use. This preliminary action allows the system to have correction values ready without delaying actual imaging operations, thus resolving the contradiction between precision and time loss.
2Manufacturing precision
If correction images are created continuously to maintain accuracy, then manufacturing precision is improved, but productivity decreases due to the time-consuming creation process
Solution Approach 1:
The system creates correction images in advance during idle periods and stores them in storage units. When imaging is required, the correction image selection unit retrieves pre-created correction images based on matching imaging conditions (exposure time, temperature, etc.), eliminating the need to create correction images in real-time and thus maintaining productivity while ensuring accuracy.
Solution Approach 2:
The patent creates correction images that represent typical imaging conditions and stores these as reusable templates. When actual imaging conditions match the stored correction image conditions, the system uses the copied correction data directly without recreation, improving productivity while maintaining precision through condition-matched corrections.
3Device complexity
If simple correction methods are used to reduce complexity, then device complexity is reduced, but measurement precision deteriorates due to noise in correction images
Solution Approach 1:
The patent extracts and removes noise from original images before creating correction images. The noise removal unit specifically targets and eliminates noise components while preserving the actual signal. This extraction approach simplifies the correction process by automatically handling noise removal, reducing device complexity while maintaining high measurement precision through clean correction images.
Solution Approach 2:
The system evaluates the quality of created correction images and uses this feedback to determine whether the correction image should be stored or discarded. The correction image creation unit monitors noise levels and correction effectiveness, providing feedback that guides whether to proceed with storing the correction image or to continue acquiring more data for a better correction image, thus balancing complexity and precision.
Data Source
AI summary
A correction image creation device includes: an acquisition unit that acquires at least one original image, which is a basis when creating a correction image used in offset correction with respect to an image that has been obtained by imaging; a determination unit that determines whether or not noise from the exterior is superimposed on the original image; and a cancellation unit that cancels creation of the correction image in a case in which it has been determined by the determination unit that noise from the exterior is superimposed on the original image.