Umesh Ghanekar

Work place: Department of Electronics and Communication Engineering National Institute of Technology, Kurukshetra, India

E-mail: ugnitk@nitkkr.ac.in

Website:

Research Interests: Image Processing, Image Manipulation, Image Compression, Computer Architecture and Organization, Computational Science and Engineering

Biography

Umesh Ghanekar, received Ph.D. degree from National Institute of Technology, Kurukshetra. He is a Professor in the department of Electronics and Communication Engineering at National Institute of Technology, Kurukshetra and has teaching experience of more than 28 years. His research interests are communication engineering, Image processing, signal processing, image forensics, image resolution and image denoising.

Author Articles
Spliced Image Classification and Tampered Region Localization Using Local Directional Pattern

By Surbhi Sharma Umesh Ghanekar

DOI: https://doi.org/10.5815/ijigsp.2019.03.05, Pub. Date: 8 Mar. 2019

In this paper the authors have proposed a spliced image detection algorithm based on Local Directional Pattern (LDP). The output of many splicing detection techniques is either to classify spliced image from authentic images or to localize the spliced region. But the proposed algorithm has ability to classify and to localize the spliced region.  First, the original image (RGB color space) is converted to Ycbcr color space. The histogram of LDP of chrominance component of suspect image is used in classification. Whereas for localization of spliced region, the chrominance component of input image is divide into overlapping blocks; then, the LDP of each block is calculated. The standard deviation of each block is used as clue to visualize the spliced region. The experimental results are calculated in terms of accuracy, specificity (true negative tare), sensitivity (true positive rate) and error rate and proves effectiveness of the proposed algorithm. The accuracy of the proposed algorithm is 98.55 %. The algorithm is also robust against post splicing image processing operation such as gaussian blur, additive white gaussian noise, JPEG compression and scaling however, previous techniques have not considered these experimental environment. 

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