Image Registration Using Common Wavelength Component
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Solution Overview
Problem
Existing image processing techniques fail to register images with high accuracy across different wavelength ranges due to low detection accuracy of correspondence points and spatial resolution issues, leading to poor image composition and subject measurement.
Innovation Solution
An image processing device and method that detects correspondence points based on a common wavelength range among multiple images and eliminates interference from non-specific wavelength ranges, ensuring high-accuracy registration and isolation of desired wavelength components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If images are captured with non-overlapping wavelength ranges using mosaic-shaped color filters, then wavelength-specific information is obtained, but spatial resolution and correspondence point detection accuracy deteriorate
Solution Approach 1:
The patent divides the image processing into two distinct stages: first capturing images with non-overlapping wavelength ranges using mosaic-shaped color filters to obtain wavelength-specific information, then performing registration based on a common wavelength range component that is intentionally included in each image. This segmentation allows simultaneous achievement of wavelength specificity and spatial resolution by processing different wavelength components separately rather than requiring perfect spectral separation.
Solution Approach 2:
The patent applies different processing qualities to different wavelength components. The common wavelength range component is used for high-precision registration and correspondence point detection, while other wavelength-specific components are used for their respective measurement purposes. This local quality approach allows each wavelength component to be optimized for its specific function while maintaining overall system performance.
2Adaptability or versatility
If multiple imaging units with different wavelength characteristics are used, then wavelength-specific imaging is achieved, but correspondence point detection accuracy and registration precision deteriorate
Solution Approach 1:
The patent makes each imaging unit universally applicable for registration purposes by including a common wavelength range component in images captured with non-overlapping wavelength ranges. This universal component serves as a basis for correspondence point detection across all imaging units, while each unit simultaneously maintains its wavelength-specific imaging capabilities. The common wavelength component acts as a universal reference that enables accurate registration despite the diversity of wavelength ranges.
3Measurement precision
If images are registered based on wavelength-specific components, then wavelength accuracy is maintained, but registration accuracy deteriorates due to lack of common reference
Solution Approach 1:
The patent introduces a common wavelength range component as an intermediary element that mediates between multiple wavelength-specific images. This intermediary component serves as a common reference frame that enables accurate registration while preserving the wavelength-specific information in each image. The common wavelength component acts as a bridge that allows images from different wavelength ranges to be aligned accurately without compromising their spectral characteristics.
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
The solution enables high-accuracy registration and measurement of images with only the desired wavelength range, improving image composition and subject measurement precision.
Implementation Method 1
an imaging element having a plurality of imaging elements... each image includes only information of a single characteristic
Implementation Method 2
at least one optical filter transmitting light having a plurality of wavelength ranges
Data Source
AI summary
The present invention provides an image processing device, an imaging apparatus, and an image processing method capable of acquiring images that are registered with high accuracy and include only a component of a desired wavelength range. In an image processing device according to an aspect of the invention, at least one image is captured with light having a plurality of wavelength ranges not overlapping one another (that is, including an intentional interference component in addition to a principal wavelength range), and at least one wavelength range of the plurality of wavelength ranges is common among the images. Accordingly, it is possible to detect correspondence points among a plurality of images based on information of such a common wavelength range, and to register the plurality of images with high accuracy. In addition, since an influence of light having a wavelength range other than a specific wavelength range is eliminated after registration, it is possible to acquire a plurality of images including only a component of a desired wavelength range.