TY - GEN
T1 - Implementing light field image refocusing algorithm
AU - Fu, Wenxing
AU - Tong, Xi
AU - Shan, Chuan
AU - Zhu, Supeng
AU - Chen, Baijia
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/12/2
Y1 - 2015/12/2
N2 - The light field imaging produces the information on the direction of light ray, therefore the refocusing of the raw image shot with the light field camera can acquire high-resolution images of objects at different distances. This paper presents the light field image refocusing principles, rearranges raw images, transforms virtual image planes and integrates light rays, thus obtaining ideal refocused images. Then it implements frequency domain refocusing and space domain refocusing and applies the Fourier slicing theorem to implementing the frequency domain refocusing algorithm and uses the fast Fourier transform to enhance its efficiency. Through experiments, it compares the computational efficiency of the space domain refocusing algorithm and the frequency domain refocusing algorithm. It concludes that the latter has a higher computational efficiency.
AB - The light field imaging produces the information on the direction of light ray, therefore the refocusing of the raw image shot with the light field camera can acquire high-resolution images of objects at different distances. This paper presents the light field image refocusing principles, rearranges raw images, transforms virtual image planes and integrates light rays, thus obtaining ideal refocused images. Then it implements frequency domain refocusing and space domain refocusing and applies the Fourier slicing theorem to implementing the frequency domain refocusing algorithm and uses the fast Fourier transform to enhance its efficiency. Through experiments, it compares the computational efficiency of the space domain refocusing algorithm and the frequency domain refocusing algorithm. It concludes that the latter has a higher computational efficiency.
KW - algorithms
KW - computational frequency
KW - Fourier slicing theorum
KW - frequency domain refocusing
KW - image processing
KW - light field imaging
KW - space domain refocusing
UR - https://www.scopus.com/pages/publications/84960374172
U2 - 10.1109/OPTRONIX.2015.7345517
DO - 10.1109/OPTRONIX.2015.7345517
M3 - 会议稿件
AN - SCOPUS:84960374172
T3 - 2015 2nd International Conference on Opto-Electronics and Applied Optics: Advances in Optical Sciences and Engineering II, IEM OPTRONIX 2015
BT - 2015 2nd International Conference on Opto-Electronics and Applied Optics
A2 - Lakshminarayan, Vasudevan
A2 - Bhattacharya, Indrani
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2nd International Conference on Opto-Electronics and Applied Optics, IEM OPTRONIX 2015
Y2 - 15 October 2015 through 17 October 2015
ER -