G Naga Swetha

Work place: Department of ECE, Madanapalle Institute of Technology and Sciences. PO Box No: 14, Angallu, Madanapalle-517325, Andhra Pradesh, India.

E-mail: nagaswethag@mits.ac.in


Research Interests: Image Processing, Image Manipulation, Image Compression, Embedded System


G Naga Swetha was born in1985 in India. She received the B.Tech in Instrumentation and control Engineering from Annamacharya Institute of Technology and Science. She completed M Tech in Embedded systems from Annamacharya Institute of Technology and Science and her research area of interest – implementation of image processing in embedded systems

Author Articles
A Multi-Scale Image Enhancement Model using Human Visual System Characteristics

By M Venkata Srinu G Naga Swetha M Deepthi

DOI: https://doi.org/10.5815/ijigsp.2015.06.01, Pub. Date: 8 May 2015

Image enhancement is a fundamental pre-processing step for many automated systems and vision systems. Many enhancement algorithms have been anticipated based on different sets of criteria. One of the most widely used algorithms is the direct multi-scale image enhancement algorithm. The specialty of this algorithm is, it provides contrast enhancement, tonal rendition, dynamic range compression and accurate edge preservation of the images. It also provides these features to the individual images and/or simultaneously to the images. In this proposed method, a multi-scale image enhancement algorithm is established by using parametric contrast measure with the transform techniques such as Laplacian pyramid, discrete wavelet transform, Stationary wavelet transform and Dual-tree complex wavelet transform. The new contrast measure provides both the luminance and contrast masking characteristics of the human visual system. The proposed method is used to attain simultaneous local and global enhancements. The enhancement measures such as Entropy, Mean opinion score and Measure of enhancement gives better results than the existing methods.

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