License plate detection method and device in complex scenes
A license plate detection and complex scene technology, applied in the field of image processing, can solve the problems of high false detection rate, license plate feature design, and time-consuming detection, and achieve the effect of low false detection rate
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[0078] In order to further explain the present invention, the present invention will now be explained in conjunction with the accompanying drawings and embodiments.
[0079] The method of the current embodiment of the present invention is as figure 1 Shown, utilize the license plate detecting device of the present invention to carry out. The current embodiment of the present invention includes the following steps:
[0080] Step 1: Coarse license plate location based on the license plate segmentation filter. This step is carried out using the coarse positioning unit, and the process of coarse positioning is as follows figure 2 As shown in , set the size of the filter according to the calibrated width and height of the license plate, filter the input image, binarize and extract the connected area, and obtain the candidate frame where the license plate is located. This step can greatly reduce the image size of the subsequent processing , to improve processing efficiency.
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