1Assistant professor, SRKR Engineering college, Bhimavaram, Andhra Pradesh, India
2Principal, S.I.E.T, Narsapur, Andhra Pradesh, India
3Professor, KL university, Andhra Pradesh, India
4PG student, SRKR Engineering college, Bhimavaram, Andhra Pradesh, India
Online published on 6 March, 2017.
This paper presents a new method for image enhancement which includes both resolution enhancement and contrast enhancement. The proposed method merges SWT-DWT which is for resolution enhancement and CLAHE-SWT which is for Contrast enhancement. SWT is used in combination with DWT for enhancing the resolution of an image. (CLAHE) is a powerful method for contrast enhancement. SWT is used in combination with CLAHE to mitigate noise effects. The proposed method gives better results than existing techniques and it is proved with PSNR, Standard Deviation and RMSE and visual results.
Contrast limited adaptive histogram equalization(CLAHE), Discrete wavelet transform (DWT), Stationary wavelet transform, (SWT), Bi-cubic interpolation, Peak signal to noise ratio (PSNR)
