Building Computer Vision Projects with OpenCV 4 and C++

Thickening the shapes

We use an operation called dilation to achieve thickening. This is the operation that makes a shape thicker by adding boundary layers to all the shapes in the image:

Here is the code to do it:

Mat performDilation(Mat inputImage, int dilationElement, int dilationSize){    Mat outputImage;    int dilationType;    if(dilationElement == 0)        dilationType = MORPH_RECT;    else if(dilationElement == 1)        dilationType = MORPH_CROSS;    else if(dilationElement == 2)        dilationType = MORPH_ELLIPSE;    // Create the structuring element for dilation Mat element = getStructuringElement(dilationType, Size(2*dilationSize + 1, 2*dilationSize + 1), Point(dilationSize, ...