Yong Hao, Xiang Zhao, Qinhua Wen, Qingyuan Shang, Bin Chen. Roller Missing Detection in Deep Groove Ball Bearings Based on Machine Vision[J]. Laser & Optoelectronics Progress, 2018, 55(2): 021502
- Laser & Optoelectronics Progress
- Vol. 55, Issue 2, 021502 (2018)
Fig. 1. Diagram of image acquisition system
Fig. 2. Obtained images under three lighting schemes. (a) Coaxial light source; (b) backlight source; (c) coaxial light source and backlight
Fig. 3. (a) Extraction bearing inner and outer rings; (b) a new circle produced under the traditional CHT model; (c) the estimated circle center
Fig. 4. Segmentation of bearing inner and outer rings
Fig. 5. Schematic of bearing expansion. (a) Ring expansion; (b) pixel correspondence before and after ring expansion
Fig. 6. Polar coordinate expansion of a perfect bearing (a) and a roller missing bearing (b)
Fig. 7. Data extraction of a perfect bearing (a) and a roller missing bearing (b)
Fig. 8. Identification results of a perfect bearing (a) and a roller missing bearing (b)
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