Mixed Filter Array for Simultaneous Hyperspectral and Color Imaging
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Solution Overview
Problem
Existing hyperspectral imaging technologies struggle to simultaneously generate high-resolution hyperspectral images and color images, often requiring separate systems or complex processing methods.
Innovation Solution
A filter array with multiple types of first filters having distinct transmission spectra with multiple peaks and multiple types of second filters with different transmission spectra having one or more peaks, arranged in a mixed configuration, allowing for simultaneous generation of hyperspectral and color images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate systems or complex processing methods are used to generate hyperspectral images, then wavelength resolution is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple filter types (first filters with multiple peaks and second filters with one or more peaks) into a single filter array that can simultaneously capture hyperspectral and color image information. This merging eliminates the need for separate hyperspectral imaging systems and color camera systems, reducing overall system complexity while maintaining high wavelength resolution through the coordinated arrangement of different filter types.
Solution Approach 2:
The filter array is designed to perform multiple functions simultaneously: it captures hyperspectral data for detailed wavelength analysis and color image data for visual representation. The first filters provide multiple transmission peaks for hyperspectral information, while the second filters provide color information, making the single system universal for both imaging modes without requiring separate dedicated systems.
2Measurement precision
If separate systems are used to generate hyperspectral images and color images, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
By merging hyperspectral filtering and color filtering into a single filter array, the system allows users to acquire both types of image data through one imaging operation rather than requiring separate acquisition processes. This simplifies user operation while maintaining the measurement precision of hyperspectral imaging through the first filters' multiple transmission peaks.
3Measurement precision
If complex processing methods are used for simultaneous image generation, then wavelength resolution is improved, but productivity deteriorates
Solution Approach 1:
The filter array is pre-configured with first filters and second filters in specific arrangements, so that during image capture, both hyperspectral and color information are simultaneously encoded in the captured data. This preliminary arrangement eliminates the need for complex post-capture processing to separate or reconstruct the different image types, improving productivity by enabling direct simultaneous generation of both image modes.
Solution Approach 2:
The simultaneous capture capability merges hyperspectral and color imaging into a single acquisition process, doubling the information output without requiring double the acquisition time. This increases productivity by allowing users to obtain both detailed wavelength-resolved hyperspectral data and visual color images in one shot, rather than requiring sequential processing.
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 proposed solution enables the generation of hyperspectral images with high wavelength resolution and color images simultaneously, improving efficiency and reducing the complexity of image acquisition and processing.
Implementation Method 1
The filters include multiple types of first filters having mutually different transmission spectra, of which each transmission spectrum includes first peaks, and multiple types of second filters having mutually different transmission spectra, of which each transmission spectrum includes one or more second peaks
Data Source
AI summary
A filter array according to one aspect of the present disclosure is provided with filters arranged two-dimensionally. The filters include multiple types of first filters having mutually different transmission spectra, of which each transmission spectrum includes first peaks, and multiple types of second filters having mutually different transmission spectra, of which each transmission spectrum includes one or more second peaks. The number of the first peaks in the transmission spectrum of each of the multiple types of first filters is greater than the number of the one or more second peaks in the transmission spectrum of each of the multiple types of second filters, and the multiple types of first filters and the multiple types of second filters are disposed in a mixed arrangement.