Method for automatically optimizing and solving parameters of rational function model based on embedded regression

A technology of rational function and model parameters, which is applied in the field of automatic optimization and solution of rational function model parameters, and can solve problems such as complex forms of multiple correlations between variables, increased model interpretation errors, and lack of testing methods

Inactive Publication Date: 2013-01-02
CENT FOR EARTH OBSERVATION & DIGITAL EARTH CHINESE ACADEMY OF SCI
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the form of multiple correlations between variables is very complicated, and there is still a lack of very reliable testing methods, the practice of deleting some related variables often leads to an inc...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for automatically optimizing and solving parameters of rational function model based on embedded regression
  • Method for automatically optimizing and solving parameters of rational function model based on embedded regression
  • Method for automatically optimizing and solving parameters of rational function model based on embedded regression

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0068] The results of Example 1 illustrate two problems:

[0069] 1) Under the condition of sufficient control points, when a certain number of RPCs are optimized, continuing to increase RPCs will not significantly improve the fitting accuracy, or even reduce the fitting accuracy, while the ill-conditionedness of the model will increase significantly.

[0070] 2) When there are fewer control points (10), RPCs with more than the number of control points cannot be solved.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention aims to convert a problem for solving rational polynomial coefficients (RPCs) into a multi-element linear regression problem with multi-collinearity, and provides an embedded regression method for automatically optimizing parameters of a rational function model by taking a determination coefficient as an evaluation rule. Coefficients with obvious influence in the rational function model are gradually introduced, and redundant coefficients with low influence are eliminated, so that the RPCs can be automatically optimized and solved, and the brief rational function model is obtained. By the method, the rational function model can be automatically simplified, the using amount of control points is reduced, and the image correction and collimation precision is improved.

Description

technical field [0001] The invention relates to an automatic optimization and solution method of rational function model parameters, which can simplify the rational function model, reduce the number of control points used, and improve image correction accuracy. It can be applied to remote sensing, photogrammetry, surveying and mapping, image processing and other fields. Background technique [0002] The rational function model (Rational Function Model, RFM) is a complete mathematical model. Its essence is to use a large number of control points to fit the strict imaging relationship. It does not require the actual characteristics of the sensor and the imaging process. It is suitable for different types of sensor, and can hide various physical parameters of the sensor in the imaging process, so it has been widely used in the field of photogrammetry and remote sensing. The key to using the rational function model to process satellite remote sensing images is to accurately sol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F17/12G06F17/16
Inventor 龙腾飞焦伟利
Owner CENT FOR EARTH OBSERVATION & DIGITAL EARTH CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap