prove stegano existance with PSNR/MSB
Posted: 2012-12-18T00:07:36-07:00
hi
as the title it implies
i would like to know how to compare original image and stegano image with PSNR or MSB effectively
it is because i tried to compare original image and stegano image with PSNR and the result is awkward
as far a i understand, PSNR value ranging from 0 - 100 and stegano image is consider readable if PSNR value is above 30
but my value is 110
attach is result code from command line
appreciate your help
thank you
as the title it implies
i would like to know how to compare original image and stegano image with PSNR or MSB effectively
it is because i tried to compare original image and stegano image with PSNR and the result is awkward
as far a i understand, PSNR value ranging from 0 - 100 and stegano image is consider readable if PSNR value is above 30
but my value is 110
attach is result code from command line
Code: Select all
compare -verbose -metric PSNR Desktop/kami.png Desktop/stegano.png Desktop/kami_dif.png
Desktop/kami.png PNG 640x480 640x480+0+0 8-bit sRGB 348KB 0.030u 0:00.019
Desktop/stegano.png PNG 640x480 640x480+0+0 16-bit sRGB 454KB 0.040u 0:00.049
Image: Desktop/kami.png
Channel distortion: PSNR
red: 110.865
green: 110.922
blue: 110.916
all: 110.901
appreciate your help
thank you