New Morphological Features for Grading Pancreatic Ductal Adenocarcinomas

Table 6

The symbol and the dimension of feature sets that are configured by the object features and combined features.

Object	Symbol	Feature set	Dimension
NEN	CNF	Classical nonepithelial nuclei features	12
Lumen	CLF	Classical lumen features	12
	PLF	Proposed lumen features	4
	ALF	CLF  +  PLF	16
EN	CEF	Classical epithelial nuclei features	12
	PEF	Proposed epithelial nuclei features	2
	AEF	CEF  +  PEF	14
Duct	CDF	Classical duct features (CLF  +  CEF)	24
	PDF	Proposed duct features (PLF  +  PEF)	6
	ADF	CDF  +  PDF	30
Tissue	CTF	Classical features extracted from three objects (CLF  +  CEF  +  CNF)	36
	PTF	Proposed features extracted from three objects (PLF  +  PEF  +  CNF)	18
	ATF	All features (CLF  +  CEF  +  PLF  +  PEF  +  CNF)	42