Let, i have an lena image of 512*512 pixels. if the consecutive pixels of an image are less than 100 i want to apply 3 LSB, but if the consecutive pixels or any one of them are more than 100 then i want to use PIXEL VALUE DIFFERENCING( PVD) METHOD.

I need to hide text inside an image,Let, i have an lena image of 512*512 pixels. if the consecutive pixels of an image are less than 100 i want to apply 3 LSB METHOD, but if the consecutive pixels or any one of them are more than 100 then i want to use pixel value differencing(PVD) method to hide 4 LSB OR 5 LSB basing upon the difference value between the consecutive pixels.i.e if the difference value is between 0 to 15 then 4 LSB ELSE 5 LSB. kindly give a suggestion?

[Walter Roberson]

How many consecutive pixels are being referred to? Consecutive in which directions ?

Answer 1

[Image Analyst]

I don't have a demo for exactly what you want to do (two different methods). I don't even know what you mean by "3 LSB METHOD", "4 LSB METHOD" or "5 LSB METHOD", but I do have a demo for LSB encoding of text in an image in my File Exchange. It's also attached.

Feel free to modify it or study how it works.