26-05-2012, 01:22 PM
I AM A STUDENT OF COMPUTER SCIENSE AND WANT TO DO MY PROJECT ON IMAGE STEGANOGRAPHY (LSB BASED).I WANT ITS DETAIL.
26-05-2012, 01:22 PM
I AM A STUDENT OF COMPUTER SCIENSE AND WANT TO DO MY PROJECT ON IMAGE STEGANOGRAPHY (LSB BASED).I WANT ITS DETAIL.
05-10-2012, 12:50 PM
LSB based Image Steganography
lsb steganography.docx (Size: 141.98 KB / Downloads: 84) Abstract This paper presents the Least significant bit (LSB) steganography in an grayscale or RGB image.LSB based Steganography embed the text message or secret message in least significant bits of digital picture. Least significant bit (LSB) insertion is a common, simple approach to embedding information in a cover file. In this paper we are showing the embedding the data in an image in the case of LSB steganography. Human eye cannot distinguish between original image and stego image, image formed after embedding of data in case of LSB steganography but in case of MSB steganography there is slight difference in original image and stego image. The result is shown by calculating SNR i.e Signal to noise ratio of grayscale and RGB image. INTRODUCTION Steganography is the art and science of invisible communication. This is accomplished through hiding information in other information, thus hiding the existence of the communicated information. The word steganography is derived from the Greek words “stegos” meaning “cover” and “grafia” meaning “writing” defining it as “covered writing”. In image steganography the information is hidden exclusively in images. The image obtained after insertion of message is called a stego image. Insertion of secret message is done in least significant bit (LSB) or Most Significant bit (MSB) of the image pixels. Then the stego image formed is having a message which is invisible to human eye. This means that one cannot find the difference between the original image and stego image. The secret message is inserted by using an algorithm and the secret message is obtained from stego image by using reverse algorithm. In LSB based steganography, the secret message is embedded in the least significant bit and stego image, if formed. Similarly in most significant bit (MSB) based steganography, the message is embedded in most significant bit. Methods of Steganogarphy LSB Steganography LSB is the lowest bit in a series of numbers in binary. e.g. in the binary number: 10110001, the least significant bit is far right 1. The LSB based Steganography is one of the steganographic methods, used to embed the secret data in to the least significant bits of the pixel values in a cover image. e.g. 240 can be hidden in the first eight bytes of three pixels in a 24 bit image. CONCLUSION LSB based steganography embed the text message in LSB of the pixels of cover image . This paper shows the results of LSB based steganography by calculating Mean square error. MSE computes the error between the cover image and the stego image. If the mean square error is high that means the there is difference between the pixel values of the image then the stego image is not exactly same as the cover image. If the MSE is low then stego image is of good quality and there is less difference between the cover and stego image. Such an image the secret message cannot be observed by human eye so secret information is transferred from source to destination.
28-01-2013, 11:49 AM
to get information about the topic "image steganography based on pixel value differencing" full report ppt and related topic refer the link bellow
https://seminarproject.net/Thread-edge-a...-revisited http://project-seminars.com/attachment.php?aid=40756 https://seminarproject.net/Thread-colour...graphy-pdf http://seminarprojectsshowthread.php?tid=79404&google_seo=nnWA++&pid=142933 https://seminarproject.net/Thread-lsb-im...ganography https://seminarproject.net/Thread-visual...-in-images |
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