Wu Zhou, Na Jin, Minhua Jia, Huinan Yang, Xiaoshu Cai. Three-dimensional positioning method for moving particles based on defocused imaging using single-lens dual-camera system[J]. Chinese Optics Letters, 2016, 14(3): 031201
- Chinese Optics Letters
- Vol. 14, Issue 3, 031201 (2016)
Fig. 1. Schematic drawing of the defocused burring using an object-space telecentric lens.
Fig. 2. Five probable locations of the focused image plane with respect to the image sensors.
Fig. 3. Detection of blur radius.
Fig. 4. Schematic drawing of single-lens dual-camera system.
Fig. 5. Illustration of the optical imaging parameters. (a) Preliminary lens. (b) Lens-prism group.
Fig. 6. Calibration of the systematic parameters using curve fitting.
Fig. 7. Images on the two cameras when focused on one of them. (a) Focused on IS 2 IS 1
Fig. 8. Five representative groups of images in simulation.
Fig. 9. Five representative groups of images in experiments for static particles.
Fig. 10. Result errors in experiments for static particles.
Fig. 11. Photo of experimental setup for measurement of moving bubbles.
Fig. 12. Couple of images of moving bubbles and reconstructed depth.
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Table 1. Key Parameters of Preliminary Lens and Lens-Prism group (Unit: mm)
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Table 2. Real and Calculated Object Distances in Simulation
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