Title :
A wavelet coefficients based dynamic range compression technique for infrared images
Author :
Karali, A.O. ; Aytac, T.
Author_Institution :
TUBITAK BILGEM ILTAREN, Ankara, Turkey
Abstract :
14-bit or 16-bit pixel depth high dynamic-range images are acquired from visible band cameras and from infrared imaging devices which are more widely used nowadays. Usually, linear mapping is used to display these images to operators. However, results of the researches done to map images into 0-255 range in recent years show that different techniques result in major differences at image perception and detail visibility. Successful compression of image dynamic range increases the operator awareness for surveillance systems and ensure more effective display of scene details to user. Besides, dynamic-range compression techniques effect the enhancement of the success rate of image target detection and tracking techniques. In this work, scene components are analyzed using wavelet coefficients and intensity distribution of scene components are extracted. Extracted intensity distribution is used to display scene components effectively.
Keywords :
data compression; image coding; infrared imaging; object tracking; surveillance; dynamic range compression technique; dynamic-range compression techniques; image perception; image target detection; infrared images; infrared imaging devices; intensity distribution extraction; linear mapping; operator awareness; pixel depth high dynamic-range images; scene component extraction; surveillance systems; tracking techniques; visible band cameras; wavelet coefficients; DH-HEMTs; Dynamic range; High definition video; Histograms; Image coding; Infrared imaging; Nonlinear optics; Dynamic Range Compression; Image Enhancement; Infrared Imaging; Low Level Image Processing;
Conference_Titel :
Signal Processing and Communications Applications Conference (SIU), 2013 21st
Conference_Location :
Haspolat
Print_ISBN :
978-1-4673-5562-9
Electronic_ISBN :
978-1-4673-5561-2
DOI :
10.1109/SIU.2013.6531510