Research Article

Proving Reliability of Image Processing Techniques in Digital Forensics Applications

Listing 21

Involution property of pixels.
Lemma negpix_involution: forall pix: pixel,
 negpix (negpix pix) = pix.
Proof.
 intro.
 destruct pix.
 simpl.
 induction col.
 + simpl. auto.
 + simpl. auto.
Qed.