Parallel Hardware Implementation of Efficient Embedding Bit Rate Control Based Contrast Mapping Algorithm for Reversible Invisible Watermarking

Subhajit Das,Reshmi Maity,Niladri Pratap Maity,Arun Kumar Sunaniya

doi:10.1109/access.2020.2986134

Abstract

This paper presents an improved reversible contrast mapping (RCM) algorithm for reversible invisible watermarking (RIW) in both software and hardware platforms. Based on well-known parameters for RIW like distortion, embedding bit rate, payload size and data hiding capacity, an efficient embedding bit rate control based contrast mapping (EBCRCM) algorithm is proposed. An adaptive linear contrast mapping on pixel intensity value is asserted with RCM that controls the embedding bit rate without changing the embedding capacity to maintain distortion. Xilinx system generator (XSG) and VIVADO tool construct the novel VLSI architecture that needs 173.362 ns latency for 100 MHz clock with throughput 46.146 Mbps and 5.8 ns critical path for single cycle of embedding process. The proposed algorithm is verified in MATLAB tool based software platform by taking different types of multimedia data like gray-scale images, color images and video signals. Implementation of low hardware resources based VLSI architecture through zed-board in real time field programmable gate array (FPGA) platform confirms the capability of high speed, low cost and real-time use. 100% agreement is observed from software simulations and hardware platforms.

Highlights

The modern world depends on digital medium as well as digital multimedia data for contemporary communication system
Taking into consideration distortion as well as to implement less hardware resources based VLSI architecture, in embedding bit rate control based contrast mapping (EBCRCM) algorithm the T is kept as a constant and the embedding bit rate is controlled by adaptively varying contrast value
In this paper a new embedding bit rate control based contrast mapping algorithm is proposed for reversible image watermarking

Summary

INTRODUCTION

The modern world depends on digital medium as well as digital multimedia data for contemporary communication system. The efficiency and superiority of an algorithm for RIW are found out based on these parameters They are distortion, data hiding capacity, payload size and embedding bit rate. The visual quality can be increased by increasing the value of PSNR above the range but to do this either the embedding capacity or embedding bit rate needs to be reduced below their desired range This decreases the overall efficiency, superiority and performance of an algorithm for RIW which is practically not acceptable. The outcome of the algorithm will provide a good visual quality watermarked image as well as the value of respective parameters will vary in their desired range In this way, unlike application specific algorithms the proposed algorithm represents a novel algorithm for RIW. This section highlights the performance based on inevitability and comparative analysis with other algorithms

THE PROPOSED EBCRCM BASED RW

RESULT

CONCLUSION