Comprehensive Image Analysis

Top image shows the same check that has been warmed beyond room temperature to verify the hidden word VALID in both the PAY and SIGNATURE area of interest. Below this is a complete scanned image of the original document compressed into a low resolution bitmap, similar to what the banks converted image will look like. The scans below it show the signature area magnified to demonstrate the ability of discovery ofan alteration through pixel analysis. The robustness of the characters left behind when compared to the original will show most alterations easily.

WARMED ORIGINAL CHECK TO SHOW VERIFIER HIDDEN MESSAGE

 

SCANNED AND COMPRESSED LOW RESOLUTION IRD

 

MAGNYFIED LOW RESOLUTION BITMAP OF SIGNATURE AREA

 

SAME AREA SHOWING AN ALTERATION ATTEMPT