Quantitative Image Analysis of Epithelial and Stromal Area in Histological Sections of Colorectal Cancer: An Emerging Diagnostic Tool

Table 2

Specificity, precision, recall, and 1 score from three human experts (hExp 1–3), alternative automated methods (GT, GT + MP, LT, LT + MP, and MH), and EPSTRA.

Method/expert	Specificity	Precision	Recall	1 score
hExp1	0.97	0.99	0.98	0.98
hExp2	0.98	0.99	0.97	0.98
hExp3	0.98	0.99	0.98	0.99
GT	0.97	0.99	0.34	0.51
GT + MP	0.98	0.99	0.30	0.47
LT	0.93	0.98	0.75	0.85
LT + MP	0.96	0.99	0.74	0.85
MH	0.96	0.99	0.80	0.89
EPSTRA	0.97	0.99	0.97	0.98

GT: global thresholding using cumulative histogram thresholding; MP: morphologic processing; LT: local thresholding; MH: morphological hierarchy.