Resolution enhancement by aerial image approximation with 2D-TCC

Author(s):  
Kenji Yamazoe ◽  
Yoshiyuki Sekine ◽  
Miyoko Kawashima ◽  
Manabu Hakko ◽  
Tomomi Ono ◽  
...  
1994 ◽  
Author(s):  
Ronald M. Martino ◽  
Richard A. Ferguson ◽  
Russell A. Budd ◽  
John L. Staples ◽  
Lars W. Liebmann ◽  
...  

Author(s):  
Sergey Stankevich ◽  
Mykola Lybskyi ◽  
Artur Lysenko

Insufficient spatial resolution is a common problem in aerial imaging. An approach for spatial resolution enhancement using several images of low spatial resolution with relative subpixel displacement for the superresolution is proposed. Demo example of superresolution of test aerial image acquired by 4K camera onboard DJI Phantom 4 quadcopter is described.


2004 ◽  
Author(s):  
Ming Liu ◽  
Linpei Zhai ◽  
Gang Liu ◽  
Haipeng Kuang ◽  
Jihong Xiu

Author(s):  
J.K. Weiss ◽  
M. Gajdardziska-Josifovska ◽  
M. R. McCartney ◽  
David J. Smith

Interfacial structure is a controlling parameter in the behavior of many materials. Electron microscopy methods are widely used for characterizing such features as interface abruptness and chemical segregation at interfaces. The problem for high resolution microscopy is to establish optimum imaging conditions for extracting this information. We have found that off-axis electron holography can provide useful information for the study of interfaces that is not easily obtained by other techniques.Electron holography permits the recovery of both the amplitude and the phase of the image wave. Recent studies have applied the information obtained from electron holograms to characterizing magnetic and electric fields in materials and also to atomic-scale resolution enhancement. The phase of an electron wave passing through a specimen is shifted by an amount which is proportional to the product of the specimen thickness and the projected electrostatic potential (ignoring magnetic fields and diffraction effects). If atomic-scale variations are ignored, the potential in the specimen is described by the mean inner potential, a bulk property sensitive to both composition and structure. For the study of interfaces, the specimen thickness is assumed to be approximately constant across the interface, so that the phase of the image wave will give a picture of mean inner potential across the interface.


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