License plate recognition technology for mobile end of handheld terminal

The research on the existing license plate recognition algorithm finds an algorithm suitable for running on AndroidandIOS platform in many algorithms.

The Mobile license plate recognition technology of handheld end refers to the technique of extracting license plate character information from vehicle image by means of computer vision, image processing and pattern recognition , so as to determine vehicle identity. Mobile License plate Recognition technology is divided into three parts: license plate location, character segmentation and character recognition. The license plate area occupies a small proportion in the whole image , the color, size and position of the license plate are uncertain, and the positioning algorithm can overcome the influence of different illumination and complex background , and also take into account the accuracy and real-time , Therefore, it is more difficult to locate the license plate quickly and accurately.

First, the camera of the smartphone to obtain the color image of the license plate, and then the captured image processing, including through the YUV model grayscale, piecewise linear transformation of gray-scale, binary, Roberts operator edge detection, mathematical morphology processing, and then through the Hough Transform carries on the license plate correction, then uses the double projection and the gray scale jumps the method realizes the license plate localization, the segmentation, finally through the template matching realizes the license plate recognition.

Moving end sweep sweep the license plate, identify the technical function of the car grade

1. The whole card recognition rate is up to 99.7%, especially the Chinese character recognition is far ahead of similar products;

2. recognition of fast, extremely optimized license plate location and recognition algorithm ;

3. Identification of the number of license plate types: Blue Card, yellow cards, trailer plate, the new forces, police license, the newly armed police plates, coach license plate, the embassy license plate, agricultural license plate, personalized license plate, Hong Kong and Macao entry and exit plates, Australian Taiwan license plate, civil Aviation license plate, consulate license plate, new Energy license plate

4. license plate width requirements are low;

5. Pure C code writing, can be applied across platforms.

If you need to know more information please see a corner of the account or "Niang Search " license plate recognition @ Zhao "get";

License plate recognition technology for mobile end of handheld terminal