Laser & Optoelectronics Progress, Volume. 61, Issue 18, 1828005(2024)

Block Adjustment of Large-Scale Domestic Optical Satellite Remote Sensing Imagery Without GCPs in the Antarctic

Qing Fu1,2,3, Wenlang Luo1,2,3、*, and Chen Guo1,2,3
Author Affiliations
  • 1School of Electronics and Information Engineering, Jinggangshan University, Ji'an 343009, Jiangxi, China
  • 2Jiangxi Engineering Laboratory of IoT Technologies for Crop Growth, Ji'an 343009, Jiangxi, China
  • 3Ji'an Key Laboratory of Agricultural Remote Sensing, Ji'an 343009, Jiangxi, China
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    Traditional manual mapping methods face crucial challenges in ensuring favorable observation conditions in difficult mapping areas in the Antarctic. This study proposes a large-scale block adjustment (BA) method without ground control points (GCP) using high-resolution optical satellite remote sensing images. This method mainly includes constructing an adjustment model based on virtual control points (VCPs), implementing a multilevel gross error detection and elimination strategy, and providing a robust and fast solution of large-scale BA equations accelerated by a GPU device. To validate the effectiveness of the proposed method, an experimental analysis was conducted using 39 images obtained from the ZiYuan-3 satellite images in the Antarctic. The experimental results indicate that sparse matrix storage technology can effectively reduce memory requirements, and the GPU parallel computing method can address efficiency problem in solving large-scale adjustment parameters. The accuracy of the proposed method reaches the subpixel level after the BA procedure, fully meeting the requirements of cartographic mosaicing.

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    Qing Fu, Wenlang Luo, Chen Guo. Block Adjustment of Large-Scale Domestic Optical Satellite Remote Sensing Imagery Without GCPs in the Antarctic[J]. Laser & Optoelectronics Progress, 2024, 61(18): 1828005

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    Paper Information

    Category: Remote Sensing and Sensors

    Received: Aug. 24, 2023

    Accepted: Dec. 26, 2023

    Published Online: Sep. 17, 2024

    The Author Email: Wenlang Luo (9920150045@jgsu.edu.cn)

    DOI:10.3788/LOP231971

    CSTR:32186.14.LOP231971

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