Image restoration of the open-loop adaptive optics retinal imaging system based on optical transfer function analysis

2013 ◽  
Vol 300 ◽  
pp. 178-182 ◽  
Author(s):  
Lei Yu ◽  
Yue Qi ◽  
Dayu Li ◽  
Mingliang Xia ◽  
Li Xuan
Keyword(s):  
Transfer Function ◽  
Image Restoration ◽  
Adaptive Optics ◽  
Imaging System ◽  
Function Analysis ◽  
Retinal Imaging ◽  
Open Loop ◽  
Optical Transfer Function ◽  
Transfer Function Analysis ◽  
Optical Transfer

Imaging

2019 ◽  
pp. 382-434
Author(s):  
B. D. Guenther
Keyword(s):  
Transfer Function ◽  
Modulation Transfer Function ◽  
Noise Intensity ◽  
Imaging System ◽  
Optical Transfer Function ◽  
Modulation Transfer ◽  
Optical Aperture ◽  
System Properties ◽  
Incoherent Imaging ◽  
Optical Transfer

Treating an imaging system as a linear system and use llinear system properties to d iscuss both coherent and incoherent imaging. Use a one dimensional pin hole camera to study the theory of incoherent imaging. Two different criteria, Rayleigh and Sparrow, are used to define the resolution limits of the camera. From the simple theory define the optical transfer function and the modulation transfer function as appropriate characterizations of complex imaging systems. A review of the human imaging system emphasizes tits idfferences with man made cameras. Coherent imaging is based on Abbe’s theory of microscopy. A simple 4f imaging system can be used to understand how spatial resolution is limited by the optical aperture and by controlling the aperture, we can enhance the edges of an image or remove noise intensity noise on a plane wave. Apodizing the aperture allows astronomers to locate planents orbiting distant stars.

Transfer function analysis of positron-emitting tracer imaging system (PETIS) data

2002 ◽  
Vol 57 (2) ◽  
pp. 225-233 ◽  
Author(s):  
N. Keutgen ◽  
S. Matsuhashi ◽  
C. Mizuniwa ◽  
T. Ito ◽  
T. Fujimura ◽  
...  
Keyword(s):  
Transfer Function ◽  
Imaging System ◽  
Function Analysis ◽  
Transfer Function Analysis ◽  
Tracer Imaging
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