数字全息测量技术中消除零级衍射像的方法

A New Way to Eliminate the Zero-order Image in Digital Holography

提出一种数字全息的零级衍射像消除方法 ,该方法不需要相移器材或其他辅助设备 ,直接利用图像处理手段对数字全息图进行数字处理 ,完全消除零级衍射像 ,有效改善真实像质量。

The true image that can be used for recording microscopic objects in digital holography is improved by elimination of zero order image with a digital way. The processing is done by mathematical methods without phase modulator or any other extra equipment. The basic principle and the verifying experiment are described too.