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

Figure 3

Images of Thinner Aluminum Step Wedges Obtained by a Photostimulable Phosphor Plate (PSP) System and a Charge-Coupled Device CCD Sensor. A lead plate is placed at d, e, and f images. (a, d) Digora images. (b, e) VistaScan images. (c, f) Megadixel images.