title: What is the upsampling technique used in yolov3 upsampling layers? No resources on the internet and the original paper did not describe it well
body: <p>There are different upsampling techniques used in different object detection algorithms but I want to 
     understand how the YOLO architecture works and in order to visualize the output of each layer and I 
     have got into trouble when I get at the upsampling layer?</p>