I am working with JavaAnpr to automatically recognize license plates. While it works well with European license plates, it doesn't with my country. For example;

How could I edit the recourse files and syntax XML to support other countries?

解决方案

@michel_layyous - Here's the documentation by the author. Read Page 57:

http://javaanpr.sourceforge.net/anpr.pdf

syntax.xml is essentially a regex file.

This Russian license plate pattern is 8 characters. The first character can be any of those letters. The next 3 characters can be any number from their respective set. The next 2 characters can be any of those letters from their respective set, and the last 2 characters can be any of those letters from their respective set.

The next Russian license plate is just like the first Russian license plate, except one key difference:

The 6th character can only be a 0, 1, or 2.

I found a very similar license plate for your country, however it consists of two rows. The first two numbers are on the top row, and there are 5 numbers on the bottom row. It looks like your country has 7 digits for your particular style of plate. I don't how the dot factors into the recognition of your plate, however, Page 58 of the author's documentation states:

The correction of a plate means the replacement of

each invalid character by another one. If the

character

( )

i

p

at the i

th

position of the plate

P

does not match the selected pattern

( )

`

sel

P

, it will

be replaced by the first valid one from

( )

s

y

.

( )

s

y

is a sorted vector of output activities denoting

how much the recognized character is similar to an

individual character from the alphabet.

Heuristic analysis of a segmented plate can sometim

es incorrectly evaluate non-character

elements as characters. Acceptance of the non-chara

cter elements causes that the recognized

plate will contain redundant characters. Redundant

characters occur usually on sides of the

plate, but rarely in the middle.

If the recognized plate number is longer than the l

ongest syntax pattern, we can select the

nearest pattern, and drop the redundant characters

according to it.