Development of Automatic 3D Blood Vessel Search and Automatic Blood Sampling System by Using Hybrid Stereo-Autofocus Method

Figure 3

Blood vessel photos in cases of NIR lights, wavelengths 625–950 nm, and visible light.

(a) Visible light

(b) 625 nm

(c) 660 nm

(d) 765 nm

(e) 780 nm

(f) 850 nm

(g) 870 nm

(h) 940 nm

(i) 950 nm