| Popis: |
The feasibility of a simple and low-cost 3D time-of-flight imaging system isexperimentally investigated. Using a conventional CCD camera, a fast optoelectronic shutter and a modulated light, the distance of an object in a scene is measured. The measurements are computed using a homodyne approach. The key component of the system is the opto-electronic shutter, for which amodulator developed by Acreo AB is used, and special attention was brought to characterize its properties. The principle has been successfully demonstrated. For a modulation frequency of 15 MHz and a modulator contrast of 3:1, the depth accuracy of the system is evaluated to 3.3 cm at worst and the repetability of the measurements to 3.6 cm on a range of 2 m. Indications to improve the system’s resolution are detailed for future work. |
