my_yolo

Yolov2 implement by keras and TensorFlow

Detail of Cnns

1.DenseNet121 pre-trained model

2.down-sample:32

3.input shape:416x416 output shape:13x13

Detail of Anchor

1.set 5 anchorbox by hand

2.anchor_size = lenght/weight = [1,2,3,0.5,0.3]

exchange from output to real bbox

assert output[3,4,3,:] = [0.3,0.4,1.2,1.5,0.9,1,0,0]

anchorbox = 3/1

x = 3x32+0.3x32

y = 3x32+0.4x32

w = 3xe^1.2

h = 1xe^1.5

confidence = 0.9

class = 1