Spacecraft Recovery & Remote Sensing, Volume. 45, Issue 4, 99(2024)
Study on Efficient Dense Matching Method of Stereo Mapping Satellite Image
Figures & Tables(15)
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Table 1. Experimental data information
View tableView in ArticleTable 1. Experimental data information
实验组别 影像角色 卫星载荷 分辨率/m 影像尺寸/像素×像素 第一组 左影像 ZY-3 FWD 3.5 2 010×2 010 右影像 ZY-3 BWD 3.5 2 010×2 010 第二组 左影像 GF-7 FWD 0.65 3 010×3 010 右影像 GF-7 BWD 0.65 3 010×3 010
Table 2. Experimental parameters of dense matching
View tableView in ArticleTable 2. Experimental parameters of dense matching
参数 金字塔 尺度3 金字塔 尺度2 金字塔 尺度1 降采样比例 4 2 1 匹配窗口尺寸/像素×像素 7×7 7×7 7×7 代价聚合方向/个 8 8 8 惩罚参数P1 3 3 3 惩罚参数P2 10 10 10 视差浮动值v 10 8 4
Table 3. Statistics of cost aggregation and parallax determination time in different parallax ranges
View tableView in ArticleTable 3. Statistics of cost aggregation and parallax determination time in different parallax ranges
影像实验 项目 参数 视差范围/像素 21 31 41 ZY-3影像实验 （影像尺寸/像素×像素：502×502） SGM用时/s 106.75 369.20 537.97 SGM-li用时/s 13.08 17.08 23.61 MCP用时/s 3.67 4.26 4.74 GF-7影像实验 （影像尺寸/像素×像素：752×752） SGM用时/s 226.20 468.05 1 065.12 SGM-li用时/s 27.21 39.52 52.26 MCP用时/s 7.82 11.02 13.75
Table 4. Time statistics for cost aggregation and parallax determination at different pyramid scales
View tableView in ArticleTable 4. Time statistics for cost aggregation and parallax determination at different pyramid scales
影像实验 项目 参数 金字塔尺度 2 1 ZY-3影像实验 影像尺寸/像素×像素 1 005×1 005 2 010×2 010 视差范围/像素 17 9 SGM用时/s 312.77 618.30 SGM-li用时/s 40.06 88.14 MCP用时/s 14.00 43.30 GF-7影像实验 影像尺寸/像素×像素 1 505×1 505 3 010×3 010 视差范围/像素 17 9 SGM用时/s 646.30 1 357.04 SGM-li用时/s 85.86 188.37 MCP用时/s 33.13 110.27
Table 5. Comparison statistics of parallax map between SGM and MCP
View tableView in ArticleTable 5. Comparison statistics of parallax map between SGM and MCP
参数 ZY-3影像实验 GF-7影像实验 视差差值阈值/像素 1 1 金字塔尺度 3 2 1 3 2 1 视差一致像素占比/% 98.13 97.39 96.12 94.54 96.32 92.89
Table 6. Comparative statistics of SGM and MCP DSM
View tableView in ArticleTable 6. Comparative statistics of SGM and MCP DSM
参数 ZY-3影像 GF-7影像 高程差值阈值/m 4 1 高程一致像素占比/% 98.09 96.73
Table 7. DSM accuracy statistics generated by SGM and MCP
View tableView in ArticleTable 7. DSM accuracy statistics generated by SGM and MCP
方法 ZY-3影像DSM精度/m GF-7影像DSM精度/m SGM 4.2 4.5 MCP 4.6 4.9
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Wenhuan YANG, Shuai ZHANG, Chao SUN, Ao ZHANG. Study on Efficient Dense Matching Method of Stereo Mapping Satellite Image[J]. Spacecraft Recovery & Remote Sensing, 2024, 45(4): 99
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Received: Jul. 9, 2023
Accepted: --
Published Online: Nov. 1, 2024
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