Gaussian Machine Learning Model Atmospheric Correction

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Solution Overview

Problem

Existing systems for atmospheric correction of digital images are inefficient and unable to provide accurate results, especially when ground reflectance values are not available for the correction process.

Innovation Solution

A system and method utilizing a Gaussian machine learning model to predict ground reflectance values based on radiance spectra, generating a reflectance parameter and solving for a conversion coefficient to correct for scattering and absorption effects in digital images, allowing for the production of an altered image by removing, filtering, or altering data for pixels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional atmospheric correction systems are used, then the correction process can be performed, but the accuracy is insufficient especially when ground reflectance values are not available

Engineering Contradiction:
Improveaccuracy of atmospheric correctionVSAvoidperformance without ground reflectance values
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The patent introduces an intermediary deep learning model that acts as a mediator between the input digital image and the corrected output. This model learns the complex mapping relationship between radiance and reflectance without requiring ground truth data, enabling accurate atmospheric correction even when ground reflectance values are unavailable. The model serves as an intelligent intermediary that captures atmospheric effects and reverses them through learned transformations.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent transforms the atmospheric correction problem by changing the parameters used in the correction process. Instead of relying on traditional parameters like ground reflectance values, the system uses learned parameters from the deep learning model that are optimized during training. This parameter transformation allows the system to achieve high accuracy without conventional input parameters that are often unavailable in practice.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If traditional atmospheric correction methods are used, then the correction can be applied, but the computational efficiency is low

Engineering Contradiction:
Improveefficiency of atmospheric correctionVSAvoidcomputational time required
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-training the deep learning model on a large dataset of radiance-reflectance pairs before deployment. This offline training phase captures the complex atmospheric correction mappings in advance, so that during actual operation, the correction is performed through efficient forward propagation rather than iterative computation. This preliminary preparation dramatically reduces the computational time required during practical application.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces traditional mechanical/computational atmospheric correction methods with a data-driven deep learning approach. Instead of using iterative mathematical optimization or physics-based models that require extensive computation, the system uses a trained neural network that performs correction through efficient matrix operations, significantly improving computational efficiency and reducing processing time.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20240144446A1System and method for gaussian process and deep learning atmospheric correction
Publication Date: 2024.05.02 UNIV OF VIRGINIA PATENT FOUND
  • US20240144446A1 patent drawing
  • US20240144446A1 patent drawing
  • US20240144446A1 patent drawing

AI summary

Embodiments can relate to a system for producing a digital image by automatically correcting for scattering and/or absorption effects in an original digital image. The system can include a processor. The system can include memory containing a computer program that when executed will cause the processor to receive radiance spectra of a digital image, and execute a Gaussian machine learning model. The system can generate a reflectance parameter by predicting a ground reflectance value based on a Gaussian probability distribution of radiance spectra. The system can solve for a conversion coefficient based on the reflectance parameter. The system can produce an altered digital image by at least one or more of removing, filtering, and/or altering data for at least one pixel of a digital image based on the conversion coefficient.