Abstract
AbstractSteganography is the science and art of covert communication. Conversely, steganalysis is the study of uncovering the steganographic process. The evolution of steganography has been paralleled by the development of steganalysis. In this game of hide and seek, the two player’s steganography and steganalysis always want to break the other down. Over the past three decades, research has produced a plethora of remarkable image steganography techniques (ISTs). The major challenge for most of these ISTs is to achieve a fair balance between the metrics such as high hiding capacity (HC), better imperceptibility, and improved security. This study aims to present an exhaustive scrutiny of various ISTs from the classical to recent developments in the spatial domain, with respect to various image steganographic metrics. Further, the current status, recent developments, open challenges, and promising directions in this field are also highlighted.
Highlights
Recent innovation in digitization led to the production of an enormous amount of information every day
The major challenge for most of these image steganography techniques (ISTs) is to achieve a fair balance between the metrics such as high hiding capacity (HC), better imperceptibility, and improved security
This study aims to present an exhaustive scrutiny of various ISTs from the classical to recent developments in the spatial domain, with respect to various image steganographic metrics
Summary
Recent innovation in digitization led to the production of an enormous amount of information every day. Storing, transmitting and sharing this confidential information over an open and insecure communication channel is still an unsolved challenge [1]. In this aspect, data security techniques such as cryptography, watermarking and steganography have received immense interest from researchers. The authors have highlighted the major issues, current status, and critical challenges for various state-of-the-art spatial domain ISTs. The significant contributions of the proposed study are highlighted below.
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