Hyperspectral Imaging with Non-Uniform Illumination for Clearer Reconstruction

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Solution Overview

Problem

Hyperspectral imaging systems using compressed sensing face challenges in maintaining reconstruction accuracy due to unclear color boundaries and noise when using illumination light with uniform spectral intensity, which affects the quality of reconstructed images.

Innovation Solution

The system employs an illuminating device that outputs illumination light with non-uniform spectral intensity to enhance the clarity of color boundaries in compressed images, thereby improving the reconstruction accuracy of hyperspectral images.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If illumination light with uniform spectral intensity is used, then the imaging process is simple, but color boundaries become unclear and reconstruction accuracy decreases

Engineering Contradiction:

Improvesimplicity of imaging processVSAvoidreconstruction accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent applies local quality by making the illumination light have different spectral intensities at different wavelengths rather than uniform intensity. Specifically, the illumination light is designed to have higher intensity at certain wavelength bands where color boundaries are more difficult to distinguish, thereby locally enhancing the visibility of color boundaries in the compressed image and improving reconstruction accuracy.

Inventive Principle:

Principle #3Local quality

2Measurement precision

If illumination light with non-uniform spectral intensity is used, then color boundary clarity improves, but the complexity of the illumination system increases

Engineering Contradiction:

Improvecolor boundary clarityVSAvoidillumination system complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by modifying the spectral intensity distribution parameter of the illumination light. Instead of using uniform spectral intensity, the system changes the parameter to create non-uniform spectral intensity with specific characteristics (higher intensity at certain wavelength bands). This parameter modification directly improves color boundary clarity in compressed images while managing system complexity through controlled spectral shaping.

Inventive Principle:

Principle #35Parameter changes

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 use of non-uniform spectral intensity in illumination light helps suppress unclear color boundaries, leading to improved reconstruction accuracy and quality of hyperspectral images.

Implementation Method 1

an illuminator that outputs illumination light to be radiated onto a target object... a light intensity in the first wavelength band included in the illumination light and a light intensity in the second wavelength band included in the illumination light are different from each other

Methodology Applied

Scientific EffectNon-uniform spectral intensity illumination:

Implementation Method 2

compressed sensing is a technique involving assuming that a data distribution of an observation target is sparse in a certain space (e.g., frequency space) so as to reconstruct data greater in number than observed data

Methodology Applied

Scientific EffectCompressed sensing:

Implementation Method 3

an imager that receives reflected light originating from the illumination light and coming from the target object

Methodology Applied

Scientific EffectReflection: Reflection

Implementation Method 4

The imaging device performs a reconstruction computation based on a compressed image acquired by imaging using the encoder, so as to be capable of generating an image corresponding to each wavelength band

Methodology Applied

Scientific EffectData reconstruction:

Data Source

PatentUS20260012711A1Imaging system and method

Publication Date: 2026.01.08 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

An imaging system includes: an illuminator that outputs illumination light to be radiated onto a target object; an imager that receives reflected light originating from the illumination light and coming from the target object and generates a compressed image in which image information of wavelength bands included in a target wavelength range is compressed as one piece of image information; and a processor that generates reconstructed images based on the compressed image, each reconstructed image corresponding to a different one of the wavelength bands. The wavelength bands include a first wavelength band and a second wavelength band. A light intensity in the first wavelength band included in the illumination light and a light intensity in the second wavelength band included in the illumination light are different from each other.