Bhukhanwala, Saumil A. and Tenkasi V. Ramabadran.  Automated Global enhancement of Digitized Photographs. IEEE, Consumer Electronics, Feb 1994.
 

Appendix
 

Window and Segment measures

Matlab code for performing window measures

Matlab code for performing segment measures

Matlab code for determining visual significance of segments

 Curves

Matlab code for getting gradient of line

Matlab code for curve obtained from photographic film

Matlab code for inverse of curve obtained from photographic film

Matlab code for line graph obtained from digital camera

Matlab code for inverse line graph obtained from digital camera

Matlab code for exponential fitted curve for digital camera

Matlab code for inverse exponential fitted curve for digital camera
 

Enhancement

Matlab code for push

Matlab code for stops