Illustration of parameters variation with different subdivision numbers.

<p>Illustration of parameters variation with different subdivision numbers.</p

Specifications of core components.

<p>Specifications of core components.</p

3D ear acquisition system: (a) Our developed 3D ear acquisition device, (b) 2D ear images with laser lines on them, and (c) 3D ear points cloud sample

<p>3D ear acquisition system: (a) Our developed 3D ear acquisition device, (b) 2D ear images with laser lines on them, and (c) 3D ear points cloud sample</p

Components of the 3D ear acqusition system.

<p>Components of the 3D ear acqusition system.</p

Illustration of the parameters for calibration.

<p>Illustration of the parameters for calibration.</p

Illustration of one-step rotation in laser scanning.

<p>Illustration of one-step rotation in laser scanning.</p

3D ear acquisition system: (a) Our developed 3D ear acquisition device, (b) 2D ear images with laser lines on them, and (c) 3D ear points cloud sample

<p>3D ear acquisition system: (a) Our developed 3D ear acquisition device, (b) 2D ear images with laser lines on them, and (c) 3D ear points cloud sample</p

Three-Dimensional ear data collection and processing process (the red solid arrows denote the sending command; the green arrows, from “CCD camera / Laser projector” to “Computer”, denote the data transmission of collecting; and the blue arrows, from “Computer” to “3D Ear”, denote data processing).

<p>Three-Dimensional ear data collection and processing process (the red solid arrows denote the sending command; the green arrows, from “CCD camera / Laser projector” to “Computer”, denote the data transmission of collecting; and the blue arrows, from “Computer” to “3D Ear”, denote data processing).</p

Contour maps of different ear samples (the top row is contour maps drawn from one ear, the bottom row is contour maps drawn from another ear).

<p>Contour maps of different ear samples (the top row is contour maps drawn from one ear, the bottom row is contour maps drawn from another ear).</p

Performance Comparison with commercial scanner (Vivid 910).

<p>Performance Comparison with commercial scanner (Vivid 910).</p