Figure 4 (original file can be downloaded from learning central named q2.jpg) shows an image captured by the camera. Figure 4: The real image taken by a camera 1.2.1 Task: Describe the steps to locate the centres of the two black regions Ri and R2 Complete the Matlab function "blobcentres.m" to implement the above method. The Matlab function should return the two centre coordinates in the image-plane in the format of a 2 x 2 matrix, where each column is a vector of the coordinate, such as [ri.yi;2,2