Measurement Systems for 3-D Displays
Measuring and characterizing 3-D displays is not straightforward. The technology used for stereo-image creation affects the measurement methodology, and, as already indicated, the methods are not yet standardized. Typically, optical characteristics of the autostereoscopic displays are strongly angle-dependent as the exigencies of the two-eye-view construction for stereo images require this. With an angular scan over the angles of interest, the luminance (and sometimes color) profiles can be obtained, and the remainder of the characteris-tics are derived from these values.11,12 However, the properties of the measurement system may greatly affect the results,13 the angular aperture of the measurement devices being one example. The angular aperture or resolution is typically too large for 3-D displays which have large luminance fluctuations versus viewing angle and results in large errors.