双孔散斑照相用于物体通过漫射介质成象

Imaging through scattering media by two apertures speckle photograph technique

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。本文提出了使用双孔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，因而具有很大的实用价值。

Imaging through scattering media such as fog is a long standing problem.Holographic techniques and grating interferometer technique have been demonstrated successfully in the laboratory,but their usefulness is ofen limited in field conditions by the complication of optical devices.In this paper,two apertures speckle photograph technique is used into the formation of image of objects through scattering media.Experimental results obtained with this technique show substantial improvement in image contrast over that obtained via direct imaging.The installations used are simple.There is relatively high tolerance to normal vibration disturbance.