Speckle reduction by selective spatial-domain mask in digital holography Project supported by Guangdong Provincial Science and Technology Plan Project of China (Grant Nos. 2015B010114007 and 2014B050505020). |
(color online) ENL alters as the number of sub-reconstructed images increases. The red, green, and blue lines represent apertures of 480 × 640, 240 × 320, and 120 × 160, respectively. The solid line and the dotted line represent the proposed method and the SDM method, respectively. (a) The object is dice; (b) the object is coin |