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無(wú)人機遙感圖像幾何畸變校正全過(guò)程控制方法研究
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黑龍江人工影響天氣辦公室

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黑龍江省氣象局 基于地面降水量的區域歷史回歸等統計方法對一次人工增雨的效果檢驗研究 (HQZC2020052)


Research on the Whole Process Control Method for Geometric Distortion Correction of Unmanned Aerial Vehicle Remote Sensing Images
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    摘要:

    幾何畸變是一種常見(jiàn)的像素點(diǎn)突變行為,在無(wú)人機遙感圖像中,像素點(diǎn)幾何畸變行為的表現能力越強,遙感主機對無(wú)人機圖像的控制能力越弱。為準確校正像素點(diǎn)幾何畸變行為,提升遙感主機對無(wú)人機圖像的控制能力,針對無(wú)人機遙感圖像幾何畸變校正全過(guò)程控制方法展開(kāi)研究。提取無(wú)人機遙感圖像的幾何描述符,并定義畸變像素點(diǎn)的尺度空間,完成對畸變像素點(diǎn)的配準處理。針對幾何畸變像素點(diǎn)實(shí)施重采樣,通過(guò)計算畸變校正參數的方式,求解校正處理函數,實(shí)現對無(wú)人機遙感圖像幾何畸變的校正。利用畸變校正交點(diǎn),確定圖像幾何畸變區域的覆蓋范圍,再聯(lián)合控制對象標定條件,完成對無(wú)人機遙感圖像幾何畸變校正的全過(guò)程控制。實(shí)驗結果表明,所提控制方法的應用,可以避免幾何畸變節點(diǎn)處的像素值出現明顯變化的情況,畸變前后的像素差不超過(guò)5.0pt,能夠實(shí)現對無(wú)人機遙感圖像中像素點(diǎn)幾何畸變行為的精準校正,符合實(shí)際應用需求。

    Abstract:

    Geometric distortion is a common mutation behavior of pixels, and the more powerful the performance of pixels in the remote sensing image of the drone, the weaker the control capability of the remote sensing console for the image of the drone. In order to accurately correct the geometric distortion behavior of pixel points and enhance the control ability of remote sensing hosts over drone images, research has been conducted on the entire process control method for geometric distortion correction of drone remote sensing images. Extract the geometric descriptors of drone remote sensing images and define the scale space of distorted pixels to complete the registration process of distorted pixels. Implement resampling for geometric distortion pixels, solve the correction processing function by calculating distortion correction parameters, and achieve the correction of geometric distortion in unmanned aerial vehicle remote sensing images. By using distortion correction intersection points to determine the coverage range of geometric distortion areas in the image, and then jointly controlling object calibration conditions, the entire process of geometric distortion correction for unmanned aerial vehicle remote sensing images is completed. The experimental results show that the application of the control method can avoid significant changes in pixel values at geometric distortion nodes, and the pixel difference before and after distortion does not exceed 5.0pt. It can achieve accurate correction of pixel geometric distortion behavior in unmanned aerial vehicle remote sensing images, which meets practical application requirements.

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趙麗斌,杜嬌嬌,賀 錚.無(wú)人機遙感圖像幾何畸變校正全過(guò)程控制方法研究計算機測量與控制[J].,2024,32(7):133-139.

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  • 收稿日期:2023-07-10
  • 最后修改日期:2023-08-15
  • 錄用日期:2023-08-15
  • 在線(xiàn)發(fā)布日期: 2024-08-02
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