How to get the pred_shelf_maskrcnn_hrnet_coco.pkl ?

I want to know which network do you use to get pred_shelf_maskrcnn_hrnet_coco.pkl？
In your prn64_cpn80x80x20.yaml, why your HEATMAP_SIZE set the vaule:
  - 200
  - 152
 why not 256x192 as usual ?
