proposed recognition method with a complex
background and non-uniform lighting conditions and
automatically locate the barcode and successfully applied to the
envelope image recognition system in 2010 .We can be seen
that from the research results, the current barcode image
recognition research divide into two directions. First , barcode
image processing algorithm of the barcode reading devices,
barcode is the main information of image, technology is
relatively mature. Second, in some large-scale application
systems need to recognize the bar code, while identify other
information of the image, as described in the attached image
recognition system to identify the meter reading and relevant
character while barcode information to be recognized, this case
barcode does not be the main image information, so there may
be the phenomenon of low pixel, uneven illumination of
barcode image area, the effect of using the traditional method is
not ideal.