Dilation

dilate(M, Melem, r_origin, c_origin, b) Performs binary dilation on matrix M at threshold b using structuring element Melem with origin at row r_origin and column c_origin.

dilate4(M, b) Performs dilation on matrix M at threshold b using 4 neighbors.

dilate8(M, b) Performs dilation on matrix M at threshold b using 4 neighbors.

Arguments:

• M is an image matrix.
• Melem is a vector or matrix.
• b is a real number.
• r_origin, c_origin are integers, where sign indicates direction.

Notes:

• The dilate function has binary output: foreground is always set to 255, while background is always set to 0.