Data Matrix decoder library deciphers rectangular and square ECC 200 Data Matrix codes in sizes ranging from 6x6 to 144x144.The software automatically determines whether a target employs bright on dark or dark on bright code types and adjusts a reader engine accordingly, it can be used from standard C and easy to use ,The SDK supports error correction to increase symbol strength. The error correction algorithm can recover the data from the barcode even with severe damage,Recognition rates depend on the pixel number of one module and the quality of image. The recognition algorithm can overcome multiform defects in images (scratch, smudges, damage, fuzzy code, etc.) ,