Dimitri Vlachos enhanced the dials/dials repository by addressing a bug in the spot-finding pipeline related to mask-aware erosion. He modified the find_spots algorithm in C++ to exclude masked pixels from erosion checks, treating them as true in the dispersion threshold mask. This adjustment prevented masked pixels from causing incorrect spot erasure and misclassification of strong pixels near masked regions, thereby improving the reliability of spot detection. Dimitri applied his expertise in algorithm development and image processing to deliver a focused, technically sound solution. The work demonstrated careful attention to edge cases and contributed to more robust image analysis workflows.