Initial commit: Speckle-Scanner 3D pipeline with setup README

05_disparity/zncc/requirements.txt

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+# 05_disparity/zncc — Python dependencies
+# Install: pip install -r requirements.txt
+# Full pipeline (all steps): pip install -r ~/Speckle-Scanner/requirements.txt
+#
+# GPU acceleration (optional — falls back to CPU numba if absent):
+#   CUDA 11.x:  pip install cupy-cuda11x
+#   CUDA 12.x:  pip install cupy-cuda12x
+
+numpy>=1.21
+opencv-python>=4.8
+matplotlib>=3.5
+scipy>=1.7
+numba>=0.56
+open3d>=0.16