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第 卷第 期
智能系统学报
Vol
年 月
CAAI Transactions on Intelligent Systems
Apr
Image reconstruction algorithm inspired by a bionic
compound eye system
LI Min XU LizhongSHI Aiye HUANG Fengchen
College of Computer Information and Engineering Hohai UniversityNanjing China
Abstract Iterative backprojection algorithms based on pixelrearrangement have been reported since
thin observation modules using bound opticalTOMBO systems were presentedHowever computational
costs are high and the noise smoothing ability needs to be improvedSo a normalized iterative backpro
jection algorithm was proposed to get reconstructed images for this systemBoth an adaptive total variation
normalized factor and a bilateral total variation normalized factor were employed to normalize the iterative
backprojection algorithmThe former factor chose parameters adaptively according to present image in
formation so it could retrieve the high frequency components while smoothing noiseHowever the latter
factor determined the noise points according to nearest and next nearest neighborhood of pixels in which
more image information was considered so that it smoothed noises across boundariesAlso the latter factor
accelerated the reconstructing process greatlyExperiments were based on bionic compound eye images
And the results demonstrated that the suggested method requires less time in image reconstruction
Keywordsbionic compound eye system superreconstruction iterative backprojection IBP normal
ization
受 昆 虫 复 眼 系 统 启 发 的 图 像 重 构 算 法
李敏 徐立中 石爱业 黄凤辰
河海大学 计算机及信息工程学院江苏 南京
摘要虽然基于像素重排列的迭代反投影算法已经在 TOMBO 模型构建时提出但是该方法需要大量的迭代次数同时在噪
声平滑效果上还有待于改进因此一种正则化的迭代反投影算法被提出为该系统重构图像采用自适应的总变差正则化因子
和双边总变差正则化因子来正则化迭代反投影算法自适应总变差正则化因子根据图像的当前信息来选择参数因此用该因
子正则化后的迭代反投影算法可以在平滑噪声的同时保留高频成分而双边总变差正则化因子是依据像素点的最邻近领域
和次邻近领域来判别该点是否为噪声点考虑了更多的图像信息从而可以跨过边缘平滑噪声同时双边总变差正则化因子
可以大大地加速重构的过程实验是建立在仿生复眼图像上实验结果证明了这两种正则化的迭代算法的有效性
关键词仿生复眼系统超分辨率重构迭代反投影算法正则化
中图分类号TP文献标识码A文章编号
Received Date
Foundation Item National Natural Science Foundation of China
National High Technology
Research and Development Program of China
AAZ Research Fund for the Doctoral
Program of Higher Education of China
Contact AuthorXU LizhongEmail lzhxuhhueducn
In many applications imaging system need to be
thin and lightHowever decreasing the thickness of a
lens reduces the area of the vision fieldInspired by
insect vision systems a bionic compound eye system
was constructed by TanidaIt is called a thin observa
tion module by bound optics TOMBO
The TOM
BO system uses compound eye imaging technology to
capture measured images and uses digital signal pro
cessing technology to reconstruct a highresolution im
ageThis system is mainly constructed of many micro
lenses so it can be made very thin
Because of cost of hardware and the physical limi