PDF barcode reader for renaming the file name by reading the barcode in it!

Hi All, I was experimenting renaming the files based on the barcode in the pdf file which are scanned and renamed.As usual searching google stumbled upon image barcode reader opensource Zbar.Now the next challenge is to convert the pdf to image file in order to scan.Subsequent research i came across Image Magick. Using the combination of imageMagick and zbarcode i was able to solve the rename pdf files based on the first page of barcode. Which worked like a magic.