Baoyan Shan, Zhencai Zhu, Yonghe Zhang, Chengbo Qiu. A Real-Time SIFT Algorithm for Planetary Surface Feature Extraction[J]. Laser & Optoelectronics Progress, 2021, 58(2): 0210020
- Laser & Optoelectronics Progress
- Vol. 58, Issue 2, 0210020 (2021)
Fig. 1. Flow chart of proposed algorithm
Fig. 2. Gaussian kernel function implementation process
Fig. 3. Key point extraction parallelization process
Fig. 4. Error distribution
Fig. 5. Feature point matching results of four algorithms. (a) SIFT algorithm; (b) SiftGPU algorithm; (c) SURF algorithm; (d) FG-SIFT algorithm
Fig. 6. Time-consuming comparison of feature point extraction. (a) Time-consuming statistics; (b) algorithm speedup ratio
Fig. 7. Time-consuming comparison of building Gaussian pyramid. (a) Time-consuming statistics; (b) algorithm speedup ratio
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Table 1. Shared memory layout in block
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Table 2. Error statistics of different σ values
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Table 3. Matching effect of four algorithms
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