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基于图像处理的三维自动调焦系统 被引量:3
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作者 王健 陈洪斌 +2 位作者 张晓明 安涛 熊帅 《光电工程》 CAS CSCD 北大核心 2013年第2期46-51,共6页
针对一维调焦技术的不足,在六自由度平台的基础上提出了一种基于图像处理的三维自动调焦系统。该系统以CMOS相机为图像传感器,以六自由度平台为执行机构,用计算机获取图像清晰度评价值并驱动六自由度(6-DOF)平台做三维空间运动实现三维... 针对一维调焦技术的不足,在六自由度平台的基础上提出了一种基于图像处理的三维自动调焦系统。该系统以CMOS相机为图像传感器,以六自由度平台为执行机构,用计算机获取图像清晰度评价值并驱动六自由度(6-DOF)平台做三维空间运动实现三维自动调焦。调焦实验分为两部分,一部分为一维自动调焦闭环实验,另一部分为三维自动调焦闭环实验。针对X、Y、Z三轴耦合性关系,提出一种改进的随机并行梯度下降(SPGD)算法。实验结果表明系统闭环调焦误差小于3%,满足三维调焦精度要求。 展开更多
关键词 图像清晰度评价 六自由度 三维调焦 SPGD
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3-Dimensional Irradiance Imaging with a Single Camera System
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作者 陆永刚 王式民 +1 位作者 朱震 徐益谦 《Journal of Southeast University(English Edition)》 EI CAS 1998年第2期40-44,共5页
The focusing tomography is presented to reconstruct 3 dimensional irradiance distribution. A 3 dimensional luminous body could be considered as the combination of many 2 dimensional parallel luminous sections. Focu... The focusing tomography is presented to reconstruct 3 dimensional irradiance distribution. A 3 dimensional luminous body could be considered as the combination of many 2 dimensional parallel luminous sections. Focus on these discrete sections respectively by a single camera, a group of images would be captured to form governing equations of irradiance. After inversion procedure, the irradiance distribution of different sections could be decoded. In this experimentation two lightbulbs are used to simulate two luminous sections. Reasonable results demonstrate that this technique could be a useful method in irradiance reconstruction after further development. 展开更多
关键词 focusing tomography 3 dimensional irradiance reconstruction image
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