基于面阵CCD的相机自动调焦技术  

Technology of camera auto-focusing based on area-array CCD

作　　者：李开端[1] 赵育良[1] 李英杰[1] 张青臣[1] 

机构地区：[1]海军航空工程学院青岛分院,青岛266041

出　　处：《传感器技术》2002年第6期46-49,共4页Journal of Transducer Technology

摘　　要：为满足摄影分辨力的要求 ,在航空相机拍摄过程中 ,镜头位置要随着摄影距离的改变相应调整。线阵CCD交汇测量能准确测定点目标的距离 ,但对于面目标测量难度较大 ,若用面阵CCD替代线阵CCD ,并利用小波变换获取的图像边缘特征 ,自动识别相同点目标在不同CCD面上的成像位置 ,可实现面目标距离精确测量和相机焦距的自动调整。During aerial camera photograph,photographic distance occur change with flight platform,argue to satisfy resolution,the location of camera lens will be adjusted correspondingly.The linear array CCD can accurate survey the distance of target, but measuring area target is greater difficulty.If replacing the linear array CCD with the area array CCD,and extracting speciality of image edge using wavelet transform,auto recognition location of unequal target's image in CCD surface,can realize the auto focusing and accurate measurement of surface target.

关 键 词：面阵CCD 交汇测量 小波变换 自动调焦 

分 类 号：TB852.1[一般工业技术—摄影技术]