Building Computer Vision Projects with OpenCV 4 and C++

Segmentation

Segmentation is the process of dividing an image into multiple segments. This process is to simplify the image for analysis and make feature extraction easier.

One important feature of plate segmentation is the high number of vertical edges in a license plate, assuming that the image was taken frontally and the plate is not rotated and without perspective distortion. This feature can be exploited during the first segmentation step to eliminate regions that don't have any vertical edges.

Before finding vertical edges, we need to convert the color image to a grayscale image (because color can't help us in this task) and remove possible noise generated from the camera or other ambient noise. We will apply a 5x5 gaussian blur and ...