Matsumoto Yuji, Takaki Yasuhiro
Opt Lett. 2014 Jun 15;39(12):3433-6. doi: 10.1364/OL.39.003433.
Horizontally scanning holography can enlarge both screen size and viewing zone angle. A microelectromechanical-system spatial light modulator, which can generate only binary images, is used to generate hologram patterns. Thus, techniques to improve gray-scale representation in reconstructed images should be developed. In this study, the error diffusion technique was used for the binarization of holograms. When the Floyd-Steinberg error diffusion coefficients were used, gray-scale representation was improved. However, the linearity in the gray-scale representation was not satisfactory. We proposed the use of a correction table and showed that the linearity was greatly improved.
水平扫描全息术可以扩大屏幕尺寸和视角。一种只能生成二值图像的微机电系统空间光调制器被用于生成全息图图案。因此，应该开发用于改善重建图像中灰度表示的技术。在本研究中，误差扩散技术被用于全息图的二值化。当使用弗洛伊德 - 斯坦伯格误差扩散系数时，灰度表示得到了改善。然而，灰度表示中的线性度并不令人满意。我们提出使用校正表，并表明线性度得到了极大改善。
