Penrose high-dynamic-range imaging

doi:10.1117/1.JEI.25.3.033024

CORC > 北京大学 > 信息科学技术学院

	Penrose high-dynamic-range imaging
	Li, Jia ; Bai, Chenyan ; Lin, Zhouchen ; Yu, Jian
刊名	JOURNAL OF ELECTRONIC IMAGING
	2016
关键词	Penrose high-dynamic-range imaging spatially varying exposures Gaussian mixture models RECONSTRUCTION IMAGES SCENES VIDEO RESOLUTION
DOI	10.1117/1.JEI.25.3.033024
英文摘要	High-dynamic-range (HDR) imaging is becoming increasingly popular and widespread. The most common multishot HDR approach, based on multiple low-dynamic-range images captured with different exposures, has difficulties in handling camera and object movements. The spatially varying exposures (SVE) technology provides a solution to overcome this limitation by obtaining multiple exposures of the scene in only one shot but suffers from a loss in spatial resolution of the captured image. While aperiodic assignment of exposures has been shown to be advantageous during reconstruction in alleviating resolution loss, almost all the existing imaging sensors use the square pixel layout, which is a periodic tiling of square pixels. We propose the Penrose pixel layout, using pixels in aperiodic rhombus Penrose tiling, for HDR imaging. With the SVE technology, Penrose pixel layout has both exposure and pixel aperiodicities. To investigate its performance, we have to reconstruct HDR images in square pixel layout from Penrose raw images with SVE. Since the two pixel layouts are different, the traditional HDR reconstruction methods are not applicable. We develop a reconstruction method for Penrose pixel layout using a Gaussian mixture model for regularization. Both quantitative and qualitative results show the superiority of Penrose pixel layout over square pixel layout. (C) 2016 SPIE and IS&T; Fundamental Research Funds for the Central Universities [K16JB00080]; 973 Program of China [2015CB352502]; National Natural Science Foundation of China (NSFC) [61272341, 61231002]; Microsoft Research Asia Collaborative Research Program; NSFC [61370129]; PhD Programs Foundation of Ministry of Education of China [20120009110006]; SCI(E); EI; ARTICLE; jiali.gm@gmail.com; 3; 25
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/492331]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Li, Jia,Bai, Chenyan,Lin, Zhouchen,et al. Penrose high-dynamic-range imaging[J]. JOURNAL OF ELECTRONIC IMAGING,2016.
APA	Li, Jia,Bai, Chenyan,Lin, Zhouchen,&Yu, Jian.(2016).Penrose high-dynamic-range imaging.JOURNAL OF ELECTRONIC IMAGING.
MLA	Li, Jia,et al."Penrose high-dynamic-range imaging".JOURNAL OF ELECTRONIC IMAGING (2016).