Optical image processing using the photoinduced anisotropy of pyrrylfulgide.
A synthesized photochromic compound-pyrrylfulgide--is prepared as a thin film doped in a polymethylmethacrylate (PMMA) matrix. Under irradiation by UV light, the film converts from the bleached state into a colored state that has a maximum absorption at 635 nm and is thermally stable at room temperature. When the colored state is irradiated by a linearly polarized 650 nm laser, the film returns to the bleached state; photoinduced anisotropy is produced during this process. Application of optical image processing methods using the photoinduced anisotropy of the pyrrylfulgide/PMMA film is described. Examples in non-Fourier optical image processing, such as contrast reversal and image subtraction and summation, as well as in Fourier optical image processing, such as low-pass filtering and edge enhancement, are presented.
Menke
Neimule
N
State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China.
Yao
Baoli
B
Wang
Yingli
Y
Zheng
Yuan
Y
Lei
Ming
M
Ren
Liyong
L
Chen
Guofu
G
Chen
Yi
Y
Fan
Meigong
M
Li
Tiankai
T
D016880:Anisotropy; D006845:Hydrocarbons, Fluorinated / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects*; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008027:Light; D008858:Microscopy, Phase-Contrast / Q000379:methods*; D010777:Photochemistry / Q000379:methods*; D010783:Photometry / Q000379:methods*
D006845:Hydrocarbons, Fluorinated