# Copyright 2020 Huawei Technologies Co., Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ============================================================================

"""Config parameters for YOLOv3 models."""


class ConfigYOLOV3ResNet18:
    """
    Config parameters for YOLOv3.

    Examples:
        ConfigYoloV3ResNet18.
    """
    img_shape = [352, 640]
    feature_shape = [32, 3, 352, 640]
    num_classes = 2
    nms_max_num = 50

    backbone_input_shape = [64, 64, 128, 256]
    backbone_shape = [64, 128, 256, 512]
    backbone_layers = [2, 2, 2, 2]
    backbone_stride = [1, 2, 2, 2]

    ignore_threshold = 0.5
    obj_threshold = 0.3
    nms_threshold = 0.4

    anchor_scales = [(10, 13),
                     (16, 30),
                     (33, 23),
                     (30, 61),
                     (62, 45),
                     (59, 119),
                     (116, 90),
                     (156, 198),
                     (163, 326)]
    out_channel = int(len(anchor_scales) / 3 * (num_classes + 5))