How to improve program for license plate location

Hello everybody :) I have little problem. I need to do a program for license plate location. I have a code:

http://pastebin.com/GER1dwEC

Code detect license plate on image :

https://dl.dropbox.com/u/19214852/15.jpg

because I set intervals especially for that image, but when license plate on image is little darker or lighter, the program doesn't detect a license plate. Is there any solution than program will detect license plate for all images ?

Thank you for help :)

Regards

Michal

P.S. Sorry for my English ;)

Answer 1

[Image Analyst]

Pick an algorithm here: http://iris.usc.edu/Vision-Notes/bibliography/motion-f726.html#License%20Plate%20Recognition,%20Extraction,%20Analysis. I'm sure someone has encountered that before and published a solution for it.

[Image Analyst]

Another FAQ for you to read: http://matlab.wikia.com/wiki/FAQ#Can_you_program_up_the_algorithm_in_this_article_for_me_and_explain_it_to_me.3F. The fact is that LPR is such a complicated application for general images with all sorts of resolutions, rotations, license plate artwork, colors, etc. that no one has time to review the papers, pick one, explain it to you, code it up for you. This will take more than a few minutes. If you really need it, you can

1. Do it yourself.
2. Hire a consultant.
3. Buy a commercial product that already does it.

Asking us to do, or even part of it, or explain OCR algorithms to you is just way more time than any of us could possibly devote to your project. I have a wish list of my own projects that I never get time to spend on. I hope you understand.

Answer 2

[MIchal]

I saw that site, but i don't know hot to do that for my algorithm. I dont have big skill in programming and that is the problem.. So i need little programming help for that, not theory..

Answer 3

[MIchal]

Someone will help me ? I will be very grateful. :)

[Image Analyst]

Your last two replies were "Answers" but they weren't answers at all - they should have been comments to my answer.