Chroma space and image enhancement algorithm based on wavelet were proposed,and combine the wo,which used for analyzing the tea color and luster and evaluating the grade of the tea.

The Retinex theory is applied to color image enhancement and a modification for McCann Retinex algorithm is presented.

Another one is the Retinex algorithm.

On the basis of the method,the paper introduces Retinex algorithm,as well as an ellipse fitting iterative approach,to achieve the precise location of iris contours from two eyes\' edge image,and realizes the accurate estimation of the visual direction.

X-ray medical image enhancement and histogram processing methods based on Matlab;

Medical image enhancement based on neural dynamics;

A new image enhancement method for retinal vascular images based on morphology and matched filters;

An image enhancing method based on mathematical morphology;

Parallel Image Enhancing Research Based on PDE;

Image Enhancing and Extracting Core Point of Fingerprint;

Realization of image enhance with FFT under VC~(＋＋);

A lot of researchers usually focus on the effectiveness of different image enhancement algorithms in given circumstances.

It can be got more ideal image enhance outcome by intensity expand (improve a contrast ratio), adaptive filter (dislodge “salt”noise), discrete wavelet transform (border strengthening) and combining with several methods of image enhance arithmetic than using image disposing so.