Image enhancement of pre-processed fingerprints using color information and spatial frequency filtering

2019 ◽  
Author(s):  
Hidetoshi Kakuda ◽  
Norimitsu Akiba ◽  
Kenro Kuroki ◽  
Kazuhito Hibino ◽  
Kenji Kurosawa ◽  
...  
Keyword(s):  
Spatial Frequency ◽  
Image Enhancement ◽  
Frequency Filtering ◽  
Color Information ◽  
Spatial Frequency Filtering

Compact Incoherent Spatial Frequency Filtering Enabled by Metasurface Engineering

2021 ◽  
Author(s):  
Dean S. Hazineh ◽  
Qi Guo ◽  
Zhujun Shi ◽  
Yao-Wei Huang ◽  
Todd Zickler ◽  
...  
Keyword(s):  
Spatial Frequency ◽  
Frequency Filtering ◽  
Spatial Frequency Filtering

Low spatial frequency filtering modulates early brain processing of affective complex pictures

2007 ◽  
Vol 45 (14) ◽  
pp. 3223-3233 ◽  
Author(s):  
Catalina Alorda ◽  
Ignacio Serrano-Pedraza ◽  
J. Javier Campos-Bueno ◽  
Vicente Sierra-Vázquez ◽  
Pedro Montoya
Keyword(s):  
Spatial Frequency ◽  
Frequency Filtering ◽  
Spatial Frequency Filtering ◽  
Brain Processing
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