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Method and device for creating BRDF model, electronic equipment and storage medium

A model and initial model technology, applied in the field of satellite remote sensing, can solve the problem of low test accuracy and achieve high test accuracy

Active Publication Date: 2019-04-26
NAT SATELLITE METEOROLOGICAL CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiment of the present invention is to provide a BRDF model creation method, device, electronic equipment and storage medium, in order to solve the existing BRDF model to test target object The problem of low test accuracy

Method used

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  • Method and device for creating BRDF model, electronic equipment and storage medium
  • Method and device for creating BRDF model, electronic equipment and storage medium
  • Method and device for creating BRDF model, electronic equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] According to Embodiment 1 of the present invention, a method for creating a BRDF model is provided, such as figure 1 As shown, it is a schematic flowchart of a method for creating a BRDF model provided by Embodiment 1 of the present invention. The method at least includes the following steps:

[0032] S101. Obtain various measured data of the current data test scene;

[0033]S102, referring to each measured data, based on corresponding the radiance reflected by the surface of each object with the corresponding incident angle to the equivalent specular reflectance of the micro-surface element at the corresponding inclination angle, an initial BRDF model is created;

[0034] S103, correcting the created BRDF initial model to obtain a corrected BRDF model; thus, through the solution provided in Embodiment 1 of the present invention, it is possible to: provide a method for creating a new BRDF model, and create the obtained BRDF The test accuracy of the model on the test t...

Embodiment 2

[0053] According to Embodiment 2 of the present invention, a device for creating a BRDF model is also provided, such as Image 6 As shown, it is a schematic structural diagram of a device for creating a BRDF model provided by Embodiment 2 of the present invention.

[0054] A device for creating a BRDF model provided by Embodiment 2 of the present invention includes an acquisition module 601 , a creation module 602 and a correction module 603 .

[0055] Specifically, the acquisition module 601 acquires each measured data of the current data test scene;

[0056] Creation module 602, with reference to each measured data obtained by acquisition module 601, based on corresponding the radiance reflected by each object surface with the corresponding incident angle to the equivalent specular reflectance of the tiny surface element at the corresponding inclination angle, an initial BRDF model is created;

[0057] The correction module 603 is to correct the BRDF initial model created b...

Embodiment 3

[0065] According to Embodiment 3 of the present invention, there is also provided an electronic device, the electronic device includes: a memory and a processor, the processor and the memory communicate with each other through a bus; The program instructions executed by the processor, the processor calling the program instructions can perform the following methods: obtaining each measured data of the current data test scene; referring to each measured data, based on the reflection of each object surface with the corresponding incident angle The radiance corresponds to the equivalent specular reflectance of the micro-surface element at the corresponding inclination angle, and the initial BRDF model is created; the initial BRDF model created is corrected to obtain the corrected BRDF model.

[0066] Part of the content of the solution provided by Embodiment 3 of the present invention is the same or similar to that of the solution provided by Embodiment 1 of the present invention. ...

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Abstract

The embodiment of the invention discloses a BRDF model creation method and device, electronic equipment and a storage medium, and belongs to the technical field of satellite remote sensing, and the method comprises the steps: obtaining each piece of actual measurement data of a current data test scene; By referring to each actual measurement data, creating a BRDF initial model based on the fact that the radiance of each object surface reflected along with the corresponding incident angle is corresponding to the equivalent specular reflection ratio of the micro surface element at the corresponding inclination angle; And correcting the created BRDF initial model to obtain a corrected BRDF model. According to the scheme, a new BRDF model creation method can be provided, and the created BRDF model has higher test precision on the test target object.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of satellite remote sensing, and in particular to a method, device, electronic equipment and storage medium for creating a BRDF model. Background technique [0002] BRDF (Bidirectional Reflectance Distribution Function, Bidirectional Reflectance Distribution Function) is used to define the ratio of the reflected radiance (radiance) in a given direction to the irradiance in the incident direction (irradiance). The model that describes how the incident light in different directions is distributed in each outgoing direction after being reflected by a specific surface is the BRDF model corresponding to the surface. Since it is difficult to measure BRDF on a satellite, BRF (Bi-directional Reflectance Factor, bidirectional reflectance factor) is usually used instead of BRDF. It is defined as the ratio of the reflected radiance in a certain direction to the reflected radiance of an ideal diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20Y02T90/00
Inventor 李元
Owner NAT SATELLITE METEOROLOGICAL CENT