enter image description here

enter image description here

I used histogram attack on image with embedded text ASCII(LSB-method) and found the chi square value. All observed frequencies more than expected frequencies, that is tipical for empty image, and have almost the same difference. Also the p-value is too big, though the data is embedded. Why do we observe this phenomenon?

  • 1
    $\begingroup$ Surely the frequencies can't all be higher, unless the image got bigger? $\endgroup$ – user253751 Mar 20 at 14:59
  • $\begingroup$ no, embedded image has the same size as empty $\endgroup$ – Irene Mar 20 at 18:50

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.