System-level relative radiation correction method for aviation whisk broom multispectral scanner images

A relative radiation correction and swing-broom technology, which is applied in image enhancement, image data processing, instruments, etc., to achieve the effect of enhancing the interpretation effect

Inactive Publication Date: 2018-01-26
TIANJIN JINHANG INST OF TECH PHYSICS
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Problems solved by technology

[0004] The present invention proposes a system-level relative radiation correcti

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  • System-level relative radiation correction method for aviation whisk broom multispectral scanner images
  • System-level relative radiation correction method for aviation whisk broom multispectral scanner images
  • System-level relative radiation correction method for aviation whisk broom multispectral scanner images

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Embodiment Construction

[0016] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] This embodiment proposes a system-level relative radiation correction method for aerial swing-sweep multispectral scanner images. In this method, the principle of scanning and imaging swing-sweep strips with a large field of view is shown in Figure 1. The system-level relative radiation correction method of this embodiment includes the following steps:

[0018] Step 1: Before take-off, the bad pixel lookup table is detected on the ground according to the bad pixel detection program, and the bad pixel of the scanner is replaced according to this table; Scan 100°, collect one high-temperature blackbody image and one low-temperature blackbody image at the edge of the field of view, and ensure that the energy emitted...

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Abstract

The invention belongs to the aviation remote sensing image preprocessing technology field and particularly relates to a system-level relative radiation correction method for aviation whisk broom multispectral scanner multi-stripe images. The method is advantaged in that on the basis of real-time relative radiation correction on a single-stripe scanning image machine, system-level relative radiation correction for the multi-stripe scanning images is carried out to eliminate change of non-uniformity among the multi-stripe images after time accumulation, and image stripe removal and image enhancement processing are further carried out to enhance the image visual interpretation effect.

Description

technical field [0001] The invention belongs to the field of aerial remote sensing image preprocessing, and in particular relates to a system-level relative radiation correction method for images between multiple strips of an aerial swing-sweep multispectral scanner. Background technique [0002] The development of large field of view and high-resolution swing-broom multispectral scanner and the acquisition of experimental images can be extended and applied to the field of aerial remote sensing. However, whether the remote sensing data can be effectively applied depends not only on the design and performance of the imaging payload, but also on the radiation and geometric quality of the imaging image data. Although radiometric calibration and correction are not directly involved in the acquisition of remote sensing images, they play an important role in determining image quality. There are two ways of radiation correction: relative radiation correction and absolute radiation...

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Application Information

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IPC IPC(8): G06T5/00
Inventor 刘晓波李金龙
Owner TIANJIN JINHANG INST OF TECH PHYSICS
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