add projection loader

examples/artist/projection_d58262dd-a6b2-11ef-a41a-f46d3febaf33.json

@@ -26,7 +26,7 @@
     "image": {
         "uuid": "d58262dd-a6b2-11ef-a41a-f46d3febaf33",
         "timestamp": "2024-11-19 20:14:08.825622",
-        "image_path": "d58262dd-a6b2-11ef-a41a-f46d3febaf33.tif"
+        "image_path": "projection_d58262dd-a6b2-11ef-a41a-f46d3febaf33.tif"
     },
     "detector": {
         "image_width_px": 1000,

pyproject.toml

@@ -22,6 +22,12 @@ detector_validator = "thd_json.detector:detector_cli"
 source_validator = "thd_json.source:source_cli"
 projection_geometry_validator = "thd_json.projection_geometry:projection_geometry_cli"
 
+[project.optional-dependencies]
+load = [
+    "numpy>=2.1.3",
+    "pillow>=11.0.0",
+]
+
 [build-system]
 requires = ["hatchling"]
 build-backend = "hatchling.build"

scripts/load_projection.py

+from thd_json.load_projection import load_thd_projection
+from pathlib import Path
+
+LOAD_PATH = Path('./examples/artist/projection_d58262dd-a6b2-11ef-a41a-f46d3febaf33.json')
+
+def main():
+    meta_data, projection = load_thd_projection(LOAD_PATH)
+    print(meta_data)
+    print(f'Projection Shape: {projection.shape}')
+
+
+if __name__ == '__main__':
+    main()
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src/thd_json/load_projection.py

+import numpy as np
+from PIL import Image
+import json
+from pathlib import Path
+
+
+def load_thd_projection(json_path: Path):
+    if not json_path.suffix.endswith('json'):
+        raise ValueError('Wrong data type. Input must be `.json`file.')
+    meta_data = json.load(json_path.open())
+    image = np.asarray(Image.open(json_path.parent / meta_data['image']['image_path']))
+    return meta_data, image
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