Abstract:

In order to obtain more ideal effect of the image enhancement, the authors presented  an image enhancement algorithm based on Android platform. Firstly,  homomorphism filtering was used to preprocess the image, and wavelet transform was used to decompose the image, and then the contrast stretching and brightness enhancement were used to eliminate the unfavorable influence on the image, and wavelet transform was used to reconstruct the components
after image enhancement, finally, the image enhancement algorithm was implemented at the Android platform and the performance was tested by simulation experiment. The simulation results show that the proposed algorithm has the advantages of Android and can obtain more ideal visual effect, speeds up the image enhanced speed, so it can meet the image enhancement real\|time requirements.

Key words: image enhancement, wavelet transform, homomorphism filtering, histogram equalization 