License plate recognition method based on Hidden Markov models
A hidden Markov, license plate recognition technology, applied in the field of license plate recognition, can solve problems such as poor accuracy of Chinese characters, achieve high accuracy and improve the effect of intelligent traffic management
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[0024] The present invention will be further described below in conjunction with the drawings.
[0025] Reference Figure 1 ~ Figure 3 , A method for license plate recognition based on a hidden Markov model, which detects vehicles on a monitored road and automatically extracts and processes vehicle license plate information. The license plate recognition method includes the following steps:
[0026] Step 1. License plate positioning. The video data of the monitoring equipment is decoded, and the data frames are separated to form the image data of each frame of video, so as to facilitate the subsequent identification of vehicle information on a single image.
[0027] The license plates captured are generally color images, and the license plates have black characters on a yellow background and white characters on a blue background. In order to process these license plate images together, the license plate must be grayed out first, and the image is converted into a grayscale image acc...
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