Chinese Optics, Volume. 16, Issue 2, 305(2023)
Targeting technology based on aerial monocular camera
Fig. 8. Feature extraction results obtained by the proposed algorithm under different conditions
Fig. 9. Corner detection repetition rates obtained by three algorithms under different conditions
Fig. 12. The relation between position accuracy of feature point and calculated attitude angle
Table 1. Correct matching rates and processing speeds of the three algorithms (Unit: ms)
View tableView in ArticleTable 1. Correct matching rates and processing speeds of the three algorithms (Unit: ms)
图像 本文算法 SURF Harris-SIFT ${r_{\rm{c}}}$ $ t $ ${r_{\rm{c}}}$ $ t $ ${r_{\rm{c}}}$ $ t $ 1 6.17 7.17 3.01 11.83 6.17 10.60 2 74.85 9.28 76.89 30.26 51.33 39.25 3 50.15 8.87 51.50 20.27 34.39 26.30 4 28.44 7.82 29.21 11.49 19.51 14.92 5 62.13 9.01 63.82 25.67 46.26 35.27 6 39.67 8.32 40.75 13.67 27.94 20.82
Table 2. Comparison of the results obtained by two camera calibration algorithms
View tableView in ArticleTable 2. Comparison of the results obtained by two camera calibration algorithms
参数 本文 张方法 使用图像 $ {{\boldsymbol{I}}_1} $ $ {{\boldsymbol{I}}_{25}} $ $ {{\boldsymbol{I}}_{49}} $ $ {{\boldsymbol{I}}_1},{{\boldsymbol{I}}_2}, \ldots ,{{\boldsymbol{I}}_{50}} $ $ {{{k_1}}/ { \times {{10}^{ - 3}}}} $ 3.132 3.131 3.132 3.129 $ {{{k_2}}/ { \times {{10}^{ - 3}}}} $ 3.227 3.225 3.226 3.225 $ {{{k_3}} /{ \times {{10}^{ - 3}}}} $ 0.002 0.001 0.001 0.002 $ {p_1} $ −0.0001 −0.00009 −0.00008 −0.0001 $ {p_2} $ 0.0001 0.0001 0.0003 0.0001
Table 3. The processing speeds of the two algorithms at different resolutions (Unit: ms)
View tableView in ArticleTable 3. The processing speeds of the two algorithms at different resolutions (Unit: ms)
图像分辨率 处理时间 CPU方案 GPU方案 640×320 84 17 640×512 161 32 1024×768 304 52 1920×1080 596 74
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Xin WANG, Yu-fang LI, Hang REN, Song-wei HAN, Li-gang LIU, Ming-chao SUN, Ce SONG. Targeting technology based on aerial monocular camera[J]. Chinese Optics, 2023, 16(2): 305
Category: Original Article
Received: Jul. 4, 2022
Accepted: --
Published Online: Apr. 4, 2023
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