将散斑照相技术用于物体通过漫射介质成象

THE APPLICATION OF THE SPECKLE PHOTOGRAPH TECHNIQUE IN THE FORMATIONS OF IMAGES OF OBJECTS THROUGH SCATTERING MEDIA

物体通过大雾等漫射介质的成象问题一直吸引众多研究者的注意．光学全息技术、光栅干涉仪技术已经显示出在实验室条件下的有效性．但由于所使用的设备比较复杂，很容易受外界震动的干扰，使其应用场所受到很大制约．本文提出了使用散斑照相技术使物体通过漫射介质成象．用这种技术得到的实验结果显示这项技术在象的对比度方面比直接得到的象有很大提高．同时所使用的设备简单，受外界震动的影响小。

Imaging through scattering media such as fog is a long standing problem. Holographic techniques and grating interferometer technique have been applied successfully in laboratory, but their usefulness is often limited by the complication of optical devices. In this paper, the speckle photograph technique is used for the formation of image of objects through scattering media. Experimental results obtained with this technique show substantial improvement in image contrast on that obtained via direct imaging. The used equipment is simple and has relatively high tolerance to normal vibration disturbance.