An efficient approach for improving the quality of image based on image fusion

The field of image processing is constantly evolving in the last decades and it is being used in many applications. At present there are many enhancement techniques are available for contrast enhancement of the image. This paper proposes an effective approach to improve the quality of the image based on the image fusion using the discrete wavelet transform (DWT). Contrast enhancement approach is proposed for images which has low contrast. Contrast enhancement involves transforming the intensity of pixels from the original value to new value. The goal of contrast enhancement is to improve visibility of image details without introducing unwanted visual appearances and/or unwanted artefacts. This paper presents the contract enhancement technique to visualize all available information in an image. Proposed method uses the retinex algorithm and gamma correction technique. It uses the DWT for decomposition of the image and decompose the image into a set of band-limited components, called HH, HL, LH, and LL. LL subband will be fused to get the better result of the image. Finally, inverse DWT will be performed on fused image to achieve the final enhanced image.