Rui Xiong, Naiting Gu, Hongyan Xu. An Auto-Focusing Evaluation Function Adapted to Multi-Directional Gray Gradient Change[J]. Laser & Optoelectronics Progress, 2022, 59(4): 0418001
- Laser & Optoelectronics Progress
- Vol. 59, Issue 4, 0418001 (2022)
Fig. 1. Ideal focusing evaluation curve
Fig. 2. Focus image
Fig. 3. Focusing evaluation curves of traditional functions
Fig. 4. Focusing evaluation curves of Brenner function and Brenner2d function
Fig. 5. Microscopic focus images of groups A, B and C. (a) Group A; (b) group B; (c) group C
Fig. 6. Normalized focusing evaluation curves of microscopic images of groups A, B and C. (a) Group A; (b) group B; (c) group C
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Table 1. Evaluation indexes of focus evaluation function of group A
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Table 2. Evaluation indexes of focus evaluation function of group B
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Table 3. Evaluation indexes of focus evaluation function of group C
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