Numerical Evaluation of Image Contrast for Thicker and Thinner Objects among Current Intraoral Digital Imaging Systems

<div><i>Comparison of Gray Values for Thinner Aluminum Step Wedges</i>. D, V, and M indicate the Digora, VistaScan, and Megadixel detectors’ values. Bold lines of the detectors (D1.6, V1.6, and M0.8) show the Gray levels at standard exposure. (a) Exposure condition with the aluminum step wedge alone. (b) Exposure condition with the aluminum step wedge and the lead plate.</div>

BioMed Research International

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Figure 5

Figure 5: Numerical Evaluation of Image Contrast for Thicker and Thinner Objects among Current Intraoral Digital Imaging Systems 