Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/7215
Title: Dark satellite image enhancement using knee transfer function and gamma correction based on DWT–SVD
Authors: Bhandari A.K.
Kumar A.
Singh G.K.
Soni V.
Published in: Multidimensional Systems and Signal Processing
Abstract: In this paper, an improved and simple approach for enhancement of dark and low contrast satellite image based on knee function and gamma correction using discrete wavelet transform with singular value decomposition (DWT–SVD) has been proposed for quality enhancement of feature. In addition, this method can also process the high resolution dark or very low contrast images, and offers best enhanced result using tuning parameter of Gamma. The technique decomposes the input image into four frequency subbands by using DWT and estimates the singular value matrix of the low–low subband image, and then compute the knee transfer function using gamma correction for further improvement of the LL component. Afterward, processed LL band image undergoes IDWT together with the unprocessed LH, HL, and HH subbands to generate an appropriate enhanced image. Although, various histogram equalization approaches has been proposed in the literature, they tend to degrade the overall image quality by exhibiting saturation artifacts in both low- and high-intensity regions. The proposed algorithm overcomes this problem using knee function and gamma correction. The experimental results show that the proposed algorithm enhances the overall contrast and visibility of local details better than the existing techniques. © 2015, Springer Science+Business Media New York.
Citation: Multidimensional Systems and Signal Processing (2016), 27(2): 453-476
URI: https://doi.org/10.1007/s11045-014-0310-7
http://repository.iitr.ac.in/handle/123456789/7215
Issue Date: 2016
Publisher: Springer New York LLC
Keywords: Contrast enhancement
Dark remote sensing image
DWT–SVD
Gamma correction
Image equalization
Knee transfer function
ISSN: 9236082
Author Scopus IDs: 25651606700
57215268681
57193351909
55863318400
Author Affiliations: Bhandari, A.K., PDPM Indian Institute of Information Technology Design and Manufacturing, Jabalpur, MP 482005, India
Kumar, A., PDPM Indian Institute of Information Technology Design and Manufacturing, Jabalpur, MP 482005, India
Singh, G.K., Department of Electrical Engineering, Indian Institute of Technology Roorkee, Uttarakhand, 247667, India
Soni, V., PDPM Indian Institute of Information Technology Design and Manufacturing, Jabalpur, MP 482005, India
Corresponding Author: Bhandari, A.K.; PDPM Indian Institute of Information Technology Design and ManufacturingIndia; email: bhandari.iiitj@gmail.com
Appears in Collections:Journal Publications [EE]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.