全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

基于多聚焦图像深度信息提取的背景虚化显示

DOI: 10.16383/j.aas.2015.c140059, PP. 304-311

Keywords: 多聚焦,深度提取,热扩散,背景虚化

Full-Text   Cite this paper   Add to My Lib

Abstract:

?针对普通相机无法拍摄出符合视觉美感的背景虚化图像问题,提出一种基于多聚焦图像深度信息提取的背景虚化算法.首先,根据图像的光学成像原理,对多聚焦图像进行热扩散方程的数学建模,对图像中的每个点自适应的初始化一个深度值;其次,根据图像每个点的热扩散系数对初始图像进行前向扩散,用数值方法来解此偏微分方程,通过正则化得到修正后的图像深度信息;最后,对图像深度信息进行分层,利用多尺度高斯滤波对不同深度层的图像进行虚化处理.本算法能够有效地提取出图像的深度信息,并且获得的背景虚化效果也能够较好地符合光学原理.

References

[1]  Subbarao M, Surya G. Depth from defocus: a spatial domain approach. International Journal of Computer Vision, 1994, 13(2): 271-294
[2]  Favaro P, Mennucci A, Soatto S. Observing shape from defocused images. International Journal of Computer Vision, 2003, 52(1): 25-43
[3]  Favaro P, Soatto S. A geometric approach to shape from defocus. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2005, 27(2): 406-417
[4]  Favaro P, Soatto S, Burger M, Osher S J. Shape from defocus via diffusion. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2008, 30(2): 518-531
[5]  Zhuo S J, Sim T. Defocus map estimation from a single image. Pattern Recognition, 2011, 44(9): 1852-1858
[6]  Tang C, Hou C, Song Z. Defocus map estimation from a single image via spectrum contrast. Optics Letters, 2013, 38(10): 1706-1708
[7]  McIntosh L, Riecke B E, DiPaola S. Efficiently simulating the bokeh of polygonal apertures in a post-process depth of field shader. Computer Graphics Forum, 2012, 31(6): 1810- 1822
[8]  Kriener F, Binder T, Wille M. Accelerating defocus blur magnification. In: Proceedings of the 2013 SPIE, Volume 8667, Multimedia Content and Mobile Devices. Burlingame, California, USA, 2013. 86671Q-11
[9]  Wu J Z, Zheng C W, Hu X H, Xu F J. Rendering realistic spectral bokeh due to lens stops and aberrations. The Visual Computer, 2013, 29(1): 41-52
[10]  Xiao Jin-Sheng, Shan Shan-Shan, Duan Peng-Fei, Tu Chao-Ping, Yi Ben-Shun. A fast image enhancement algorithm based on fusion of different color spaces. Acta Automatica Sinica, 2014, 40(4): 697-705(肖进胜, 单姗姗, 段鹏飞, 涂超平, 易本顺. 基于不同色彩空间融合的快速图像增强算法. 自动化学报, 2014, 40(4): 697-705)
[11]  An Yao-Zu, Lu Yao, Zhao Hong. An adaptive-regularized image super-resolution. Acta Automatica Sinica, 2012, 38(4): 601-608(安耀祖, 陆耀, 赵红. 一种自适应正则化的图像超分辨率算法. 自动化学报, 2012, 38(4): 601-608)
[12]  Zhang Y Q, Ding Y, Xiao J S, Liu J, Guo Z. Visibility enhancement using an image filtering approach. EURASIP Journal on Advances in Signal Processing, 2012, 2012(1): 1 -6
[13]  Xiao J S, Sun L L. An iterative algorithm for maximal monotone multivalued operator equations. Acta Mathematica Scientia, 2001, 21(B2): 152-158
[14]  The Original Images. Image Registration and Fusion Systems [Online], available: http://www.imgfsr.com/ifsr_ifs1. html, April 19, 2014
[15]  The Original Images. Photo content [Online], available: http://www.pxleyes.com/photography-contest/19726/2/, April 19, 2014
[16]  Huang Zhi-Yin, Zhang Mao-Jun, Zhang Xin, Wang Wei. Multi-focus image fusion algorithm based on relative activity level. Microcomputer Information, 2009, 25(18): 289- 291(黄志银, 张茂军, 张鑫, 王炜. 基于相对清晰度的多焦距图像融合算法. 微计算机信息, 2009, 25(18): 289-291)
[17]  Xue Qian, Yang Cheng-Yi, Wang Hua-Xiang. Alternating direction method for salt-and-pepper denoising. Acta Automatica Sinica, 2013, 39(12): 2071-2076(薛倩, 杨程屹, 王化祥. 去除椒盐噪声的交替方向法. 自动化学报, 2013, 39(12): 2071-2076)
[18]  Chai Y, Li H F, Guo M Y. Multifocus image fusion scheme based on features of multiscale products and PCNN in lifting stationary wavelet domain. Optics Communications, 2011, 284(5): 1146-1158

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133