Fig. 3: Characterizing underperformance of saliency method pipeline.
From: Benchmarking saliency methods for chest X-ray interpretation
a, Example CXRs that highlight the three pathological characteristics identified by our qualitative analysis: (1) left, number of instances; (2) middle, size; (3) right, shape complexity. b, Example CXRs with the four geometric features used in our quantitative analysis: (1) top left, number of instances; (2) top right, size = area of segmentation/area of CXR; (3) bottom left, elongation; (4) bottom right, irrectangularity. Elongation and irrectangularity were calculated by fitting a rectangle of minimum area enclosing the binary mask (as indicated by the yellow rectangles). Elongation = maxAxis/minAxis. Irrectangularity = 1 − (area of segmentation/area of enclosing rectangle).
