How to hide data in images by simple LSB substitution?

In this paper, a data hiding scheme by simple LSB substitution is proposed. By applying an optimal pixel adjustment process to the stego-image obtained by the simple LSB substitution method, the image quality of the stego-image can be greatly improved with low extra computational complexity.

How is the LSB substitution method used in steganography?

This paper describes the various techniques using the LSB substitution method to hide the data in images. Image steganography hides the data efficiently and effectively with the help of LSB substitution methods. Key Words—image steganography; cover image; stego image; Simple LSB substitution; Optimal LSB technique; 1.INTRODUCTION

How is the least significant bit ( LSB ) used?

The least significant bit (LSB) is one of the most important and simple method when one want to solve such problems. In this method, a number of bits of LSB is directly replaced by each pixel of the cover image with the embedded message. This paper describes the various techniques using the LSB substitution method to hide the data in images.

Learn more In this paper, a data hiding scheme by simple LSB substitution is proposed. By applying an optimal pixel adjustment process to the stego-image obtained by the simple LSB substitution method, the image quality of the stego-image can be greatly improved with low extra computational complexity.

How to hide data in a cover image?

A spatial domain-based data hiding scheme is one that embeds confidential messages into a cover image by simply modifying its pixel values. A representative scheme is least significant bit (LSB) substitution [4]. Following LSB substitution, many schemes based on histogram shifting have been proposed [5,6]. …

How are secret data hidden in an image?

In the spatial domain [3,11,23] based steganography scheme, the secret data are embedded into the cover image by directly modifying each pixel value of the cover image itself. The most common and simplest steganography approach in the spatial domain is the Least Significant Bit (LSB) substitution method [3].

Which is the best substitution method for steganography?

The most common and simplest steganography approach in the spatial domain is the Least Significant Bit (LSB) substitution method [3]. Some other substitution methods have been proposed by enhancing the conventional LSB substitution such as Local Pixel Adjustment Process (LPAP) [19], Optimal Pixel Adjustment Process (OPAP) [3] etc.,