Screw and pen frame 1.

(scr3)

The original image

(scr3and1)

Result of ANDing graylevels of scr3 and scr4.

(scr3and2)

Result of ANDing negatives of scr3 and scr4.

(scr3thr1)

Result of thresholding scr3

(scr3and3)

Result of ANDing negatives of scr3thr1 and scr4thr1.

(scr3or1)

Result of ORing negatives of scr3thr1 and scr4thr1.

(scr3or2)

Result of ORing scr3thr1 and scr4thr1.

(scr3xor1)

Result of XORing scr3thr1 and scr4thr1.

©2003 R. Fisher, S. Perkins, A. Walker and E. Wolfart.