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metric_depth/zoedepth/models/builder.py

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+# MIT License
+
+# Copyright (c) 2022 Intelligent Systems Lab Org
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+# File author: Shariq Farooq Bhat
+
+from importlib import import_module
+from zoedepth.models.depth_model import DepthModel
+
+def build_model(config) -> DepthModel:
+    """Builds a model from a config. The model is specified by the model name and version in the config. The model is then constructed using the build_from_config function of the model interface.
+    This function should be used to construct models for training and evaluation.
+
+    Args:
+        config (dict): Config dict. Config is constructed in utils/config.py. Each model has its own config file(s) saved in its root model folder.
+
+    Returns:
+        torch.nn.Module: Model corresponding to name and version as specified in config
+    """
+    module_name = f"zoedepth.models.{config.model}"
+    try:
+        module = import_module(module_name)
+    except ModuleNotFoundError as e:
+        # print the original error message
+        print(e)
+        raise ValueError(
+            f"Model {config.model} not found. Refer above error for details.") from e
+    try:
+        get_version = getattr(module, "get_version")
+    except AttributeError as e:
+        raise ValueError(
+            f"Model {config.model} has no get_version function.") from e
+    return get_version(config.version_name).build_from_config(config)