利用成像系统的光学散焦获取景物的深度信息

Acquisition of Depth Information of a Scenery by Using the Optical Defocus of Imaging System

研究了一种新的被动测距方法．利用测量被动成像系统光学散焦的数字图像处理方法，分析光学散焦程度的变化与景物深度的关系，提出了一个散焦被动测距的计算公式，并得到了一些实验结果．该方法只需对景物采集两幅有差别的图像，避免了大量图像的采集和存储，两幅有差别图像是通过改变摄像机镜头的光圈系数来获得的，避免了图像间的位置校准和匹配．

A new passive depth detection method is discussed. With a digital image processing methodto measure the optical defocus in passive imaging system, the relationship between the optical defocusand the scenery depth is analyzed, and a calculation formula for the passive de focus depth detection isdeveloped. Experimental results are given. Only two different images obtained by changing the camera aperture coefficients are needed. and the collection and storage of a large number of images as wellas the calibration and matching of the position between the images are unnecessary.