计算机科学 ›› 2016, Vol. 43 ›› Issue (Z11): 140-143.doi: 10.11896/j.issn.1002-137X.2016.11A.030
赵青青,张涛,郑伟波
ZHAO Qing-qing, ZHANG Tao and ZHENG Wei-bo
摘要: 光场是空间中同时包含位置和方向信息的四维光辐射场的参数化表示,光场数据的获取为计算成像提供了很多新的发展方向。光场相机能够获取空间四维光场信息,相比传统成像方式多出2个自由度,因而在图像重建过程中,能够获得更加丰富的图像信息。市面上的Lytro Illum相机相对于Lytro1.0相机的成像效果更加丰富,因此利用Lytro Illum光场相机获取四维光场信息,提取出其中的有效光场数据,反演出8bit/pixel的原始四维光场图像数据,并对基于微透镜模型的光场数据进行一系列的算法预处理,从而得到易于理解的标准四维光场矩阵和子光圈图像矩阵,为光场成像技术的数据开发和应用奠定了基础。
[1] Ng R,Levoy M,Bredif M,et al.Light field photography with a handheld plenoptic camera,computer science technical report CSTR[R].Palo Alto:Stanford University,2005 [2] Levoy M.Light fields and computational imaging[J].Computer,2006,39(8):46-55 [3] Zhou Yan,Guo Hui-wen,Liang Guo-yuan,et al.3D Reconstruction Based on Light Field Information[C]∥IEEE International Conference on Information and Automation.2015:976-981 [4] Huang Yu-sheng,Xia Jun,Yin Han-chun.Three-dimensionalscene reconstruction by using lenslet array modelin computational integral imaging[C]∥Procssing of SPIE -The internatio-nal Society for Optical Engineering.2009,3:75131E [5] Tao M W,Hadap S,Malik J,et al.Depth from Combining Defocus and Correspondence Using Light Field Cameras[C]∥IEEE Internatioanl Conference on Computer Vision.2013:673-680 [6] Bishop T E,Favaro P.Full-Resolution Depth Map Estimationfrom an Aliased Plenoptic Light Field[M]∥Computer Vision-ACCV 2010.Springer Berlin Heidelberg,2010:186-200 [7] Ng R.Fourier slice photography[J].ACM Transactions on Gra-phics,2005,24(3):735-744 [8] Zhou Zhi-liang,Yuan Yan,Xiang Li-bin.Computer simulationfor digital refocusing imager based onlight field photography[C]∥International Symposium on Photoelectronic Detection & Imaging.2009 [9] 聂云峰,相里斌,周志良.光场成像技术进展[J].中国科学院研究生院学报,2011,8(5):563-571 [10] Vaish V,Wilburn B,Joshi N,et al.Using plane + parallax for calibrating dense camera arrays[C]∥Computer Vision and Pattern Recognition.2004 [11] Levin A,Fergus R,Durand F,et al.Image and depth from a conventional camera with a coded aperture[J].ACM Transactions on Graphics,2007,26(3):70-75 [12] Adelson E H,Wang J Y A.Single Lens Stereo with a Plenoptic Camera[J].IEEE Transactions on Pattern Analysis & Machine Intelligence,1992,4(2):99-106 [13] Georgiev T,Zhan Yu,Lumsdaine A,et al.Lytro camera technology:theory,algorithms,performance analysis[J].Proceedings of SPIE-The International Society for Optical Engineering,2013,7(15) [14] 阮龙.基于微透镜型光场成像数据获取及深度信息提取研究[D].郑州:郑州大学,2014 [15] 高珍.光场相机的数据处理和标定方法研究[D].杭州:浙江工商大学,2014 [16] 周文晖,林丽莉.Lytro相机的光场图像校正与重对焦方法[J].中国图像图形学报,2014,9(7):1006-1011 [17] Dansereau D G,Pizarro O,Williams S B,et al.Decoding,Calibration and Rectification for Lenselet-Based Plenoptic Cameras[C]∥Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition,2013 |
No related articles found! |
|