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# -*- coding: utf-8 -*-
# Copyright (c) Facebook, Inc. and its affiliates.
def add_deeplab_config(cfg):
"""
Add config for DeepLab.
"""
# We retry random cropping until no single category in semantic segmentation GT occupies more
# than `SINGLE_CATEGORY_MAX_AREA` part of the crop.
cfg.INPUT.CROP.SINGLE_CATEGORY_MAX_AREA = 1.0
# Used for `poly` learning rate schedule.
cfg.SOLVER.POLY_LR_POWER = 0.9
cfg.SOLVER.POLY_LR_CONSTANT_ENDING = 0.0
# Loss type, choose from `cross_entropy`, `hard_pixel_mining`.
cfg.MODEL.SEM_SEG_HEAD.LOSS_TYPE = "hard_pixel_mining"
# DeepLab settings
cfg.MODEL.SEM_SEG_HEAD.PROJECT_FEATURES = ["res2"]
cfg.MODEL.SEM_SEG_HEAD.PROJECT_CHANNELS = [48]
cfg.MODEL.SEM_SEG_HEAD.ASPP_CHANNELS = 256
cfg.MODEL.SEM_SEG_HEAD.ASPP_DILATIONS = [6, 12, 18]
cfg.MODEL.SEM_SEG_HEAD.ASPP_DROPOUT = 0.1
cfg.MODEL.SEM_SEG_HEAD.USE_DEPTHWISE_SEPARABLE_CONV = False
# Backbone new configs
cfg.MODEL.RESNETS.RES4_DILATION = 1
cfg.MODEL.RESNETS.RES5_MULTI_GRID = [1, 2, 4]
# ResNet stem type from: `basic`, `deeplab`
cfg.MODEL.RESNETS.STEM_TYPE = "deeplab"
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