mmsegmentation/configs/hrnet/fcn_hr18_4x4_512x512_80k_vaihingen.py

_base_ = [
    '../_base_/models/fcn_hr18.py', '../_base_/datasets/vaihingen.py',
    '../_base_/default_runtime.py', '../_base_/schedules/schedule_80k.py'
]
model = dict(decode_head=dict(num_classes=6))