I am working on an Image LSB steganography to hide secret image in image cover,and I used these benchmarks :
* cover Image ::: Baboon (512*512)
* Secret Image ::: Boat (128*128)
I am using an optimization algorithm to find the best pixels (in cover image) to host the secret bits .At the end I will get a list of indices indicating the best pixel to host the secret bits.
A similar approach was used in :
"Using PSO in a spatial domain based image hiding scheme
with distortion tolerance"
The problem is , this list is very big and I am not sure that it can be considered as a key , because its size is larger than the secret message.
* Secret Image size is (128*128) = 16 KB
* key (list of indices) = 60 KB
What is the best practice for this case ?
I think that if ur algorithm provide good results, it's ok for the key to be long. As it can give the main demands of hiding issues.
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