基于数字全息图像质改善的DMD再现技术研究
DMD reconstruction technology research based on image quality improvement of digital holography
李晨 1周皓 1顾济华 1徐静梅 1李慧姝 1张庆1
作者信息
- 1. 苏州大学物理科学与技术学院,江苏苏州215006
- 折叠
摘要
在运用数字全息技术记录三维物体时,由于物光是漫反射场,所记录的全息图像中噪声比较大,再现图像的质量会受到很大影响,在数字微镜器件(DMD)显示系统中这种影响尤为严重.本文首先对CCD记录的全息图衍射效率进行分析,然后采用多种图像滤波算子对全息图进行滤波处理,以提高衍射效率；在对数字全息图进行二值化提高条纹对比度之后,最终在DMD上显示了较高质量的三维物体再现像.
Abstract
When three-dimensional objects recorded by using holographic technology, as object light is diffuse reflection field, the recorded holographic image noise is relatively large; reconstruction quality is affected especially in digital micromirror device (DMD) display system. In this paper, first the diffraction efficiency of the hologram which recorded by CCD is analyzed. A variety of filtering methods are used to process the images in order to improve the diffraction efficiency. After dichotomizing the hologram for getting high contrast of the fringes, reconstructed image of the three-dimensional object with quite good quality is shown on DMD finally.
关键词
数字全息/数字微镜器件(DMD)/衍射效率Key words
digital hologram/digital micromirror device (DMD)/diffraction efficiency引用本文复制引用
基金项目
江苏省科技厅项目(BK2009601)
国家大学生创新性实验计划项目(101028512)
出版年
2012
NETL
NSTL
维普
万方数据