Why no of filters not according to the formula (5+ No of classes) x 3 ?

[MuhammadAsadJaved]

Hi @jwchoi384
In the original YOLOV3 , the no of filters in the 3 layers is according to the following formula

(5+ no of classes) x 3

so for 10 classes it should be (5 + 10) x 3 = 75 . why it is 57 in Guassian_yolov3_BDD.cfg , can you explain the reason and formula?

How I should change for different no of classes? for example for 2 classes.

https://github.com/jwchoi384/Gaussian_YOLOv3/blob/master/cfg/Gaussian_yolov3_BDD.cfg#L604

[jwchoi384]

@MuhammadAsadJaved
Hi,
Our output size is (C+1+4x2)xA.
C is the number of class, 1 is objectness score, and 4 is coordinate of bbox.
2 is Gaussian parameter (i.e., mu and sigma). A is the number of anchor boxes (=3)

If you use 2 classes, output size is 33 (2+1+4x2)x3.