Unsatisfied result on YOLOv4

[lengyuner]

I have transformed the 'yolov4.weight' into 'yolov4.pb' and run the 'predict.py'. But it seems that the output is unsatisfactory.

Does anyone has got the same result?

[frotms]

I got the same result when run the test.py.
The original image is:

the result is: