Enhancement of Low Contrast Image Contain Small Target

摘要: Selection of the subsection point is key to enhance low contrast image under light background by linear transformation.Present two methods choose point:multi-scale approach(MSA) and constant ratio(CER).The former based on principle that target would express a different dynamic behavior in scale-space.It gets transition area between repetitious approach.The latter defines fixed ratio,and find out gray level satisfied ratio as from high histogram.These are simple fast.Experimental results prove those can accurately,and effectively.