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《Acta Photonica Sinica》 2007-S1
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A New Image Enhancement by Non-linearity Transform Method

LEI Xiao-li ,DANG Qun (Department of Applied Mathematics and Applied Physics, Xi'an University of Post and Telecommunications , Xi'an 710121,China) (No. 365 Institute,Northwestern Polytechnical University , Xi'an 710072,China)  
A new non-linearity transform method is proposed for image enhancement. The whole tonal range is divided into several subintervals,but the map of shade of gray is nonlinear in the whole tonal range. In the sub- zones,red,green and blue, three colors linear are transformed alternately from the minimum to the maximum. The eye resolution of new digital image is clearly enhanced and much visible detail information is obtained in the new digital image.
【Fund】: 西安邮电学院青年基金(105-0411)资助
【CateGory Index】: TP391.41
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