As you have said you would need a variable amount of outputs which is not feasible in a CNN. However, you could divide the image into a grid and make predictions of the probability of the center of a circle is within each grid and their x and y offsets . Not sure if there are better resources available, but it might be worth looking at how YOLO or YOLO2 implemented their outputs.
stanteal t1_j5f0jaw wrote
Reply to comment by arararagi_vamp in [D] Simple Questions Thread by AutoModerator
As you have said you would need a variable amount of outputs which is not feasible in a CNN. However, you could divide the image into a grid and make predictions of the probability of the center of a circle is within each grid and their x and y offsets . Not sure if there are better resources available, but it might be worth looking at how YOLO or YOLO2 implemented their outputs.