Is there an easy way with iTextSharp to detect lines in PDF files?

I see the lines in a stream but I'm not sure how to parse them out of there nor 
do I know how to convert them from the current transform matrix.  For this 
given PDF there are 4 horizontal lines and 3 vertical lines.

q 1 0 0 1 19.96 538.9747 cm 
0 0 m 
716.89 0 l 
S 
Q 
q 1 0 0 1 19.96 399.63 cm 
0 0 m 
716.89 0 l 
S 
Q 
q 1 0 0 1 19.96 268.3525 cm 
0 0 m 
716.89 0 l 
S 
Q 
q 1 0 0 1 19.96 141.3561 cm 
0 0 m 
716.89 0 l 
S 
Q 
0 0 0 1 K 
/GS1 gs 
q 1 0 0 1 184.01 538.4 cm 
0 0 m 
0 -509.96 l 
S 
Q 
q 1 0 0 1 368.6952 659.88 cm 
0 0 m 
0 -631.44 l 
S 
Q 
q 1 0 0 1 561.25 538.4 cm 
0 0 m 
0 -509.96 l 
S 
Q

Thanks,
Darren

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