what is meant by intensity factor(alpha)

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megha prabhu on 30 Jan 2018

Commented: Image Analyst on 31 Jan 2018

DCMm=DCM+(α*Em)

where: DCMm = DC matrix after embedding message

DCM = DC matrix of cover image

α = the intensity factor of embedded

Em = Encryption message i have encrypted the msg and to get dcm i have applied blocproc method i need help to solve this!!

Image Analyst on 30 Jan 2018

Alpha is just what fraction of the watermark image you’re going to add to the original image.

megha prabhu on 30 Jan 2018

Edited: megha prabhu on 30 Jan 2018

So does that mean it can be programmer s choice? Like. Can we take 0.5

Image Analyst on 31 Jan 2018

Sure. I don't care what you use. It's a judgment call/personal choice.

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