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# Copyright 2024 Xi Zhang
#
# 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.
import os
from .clip_encoder import CLIPVisionTower
from .dino_encoder import DINOVisionTower
def build_vision_tower(vision_tower_cfg, **kwargs):
vision_tower = getattr(vision_tower_cfg, 'mm_vision_tower', getattr(vision_tower_cfg, 'vision_tower', None))
if vision_tower is None:
raise ValueError("No vision tower specified in configuration.")
is_absolute_path_exists = os.path.exists(vision_tower)
if is_absolute_path_exists or vision_tower.startswith("openai") or \
vision_tower.startswith("facebook") or vision_tower.startswith("microsoft"):
if "clip" in vision_tower.lower():
return CLIPVisionTower(vision_tower, args=vision_tower_cfg, **kwargs)
elif "dino" in vision_tower.lower():
return DINOVisionTower(vision_tower, args=vision_tower_cfg, **kwargs)
else:
raise ValueError(f'Unknown vision model type in vision_tower: {vision_tower}')
raise ValueError(f'Unknown vision tower: {vision_tower}') |