Traced build_representation from its production caller through routing, rasterization, backend selection, tiling, structure tensor calculation, isotropic and stromal expansion, footprint grading, rendering, and reusable buffers.
Recorded exact definition and key call-site lines, including repo-owned helpers in cell_detection, super_window, taxonomy, and wsi_inference.arrays.
Identified runtime NumPy/CuPy and SciPy/CuPy ndimage dispatch, host/device residency branches, optional buffer paths, and external OpenCV, Torch, and CUDA boundaries.
Did not modify the histo repository.
Lessons Learned: Pitfalls
The broad knowledge-base startup material was not needed for a narrow read-only static call-graph trace.
Simple symbol search does not capture cached-property access or runtime module dispatch, so those edges required manual inspection.
Lessons Learned: Improvements
A project call-graph tool or SOP that models property reads and module-valued xp/ndimage dispatch would speed up similar architecture traces.
