Road Vehicle Monitoring System Based on Intelligent Visual Internet of Things

Figure 9

The whole effective images of license plate location. (a) Original image. (b) Sobel sharpening. (c) Vertical and horizontal dilation. (d) Cut the extra white segment. (e) Filter the regions of license plate by aspect ratio. (f) Filter the regions of license plate by color statistics. (g) Judge the final region by edge detection with feature color. (h) Resulting image.

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