Table 5.

Average computational cost (measured in second) for feature extraction (including sparse feature encoding) on images with size 1000 × 1000 pixels. The evaluation is carried out with Intel(R) Xeon(R) CPU X5365 @ 3.00GHz, and GeForce GTX 580.

Feature Extraction Component(s)	Average Computational Cost (in second)
Nuclear Segmentation	40
CMF-SFE	42 = Nuclear-Segmentation-Cost(40) + SFE-Cost(2)
DPSD-SFE	115 = DPSD-Cost(95) + SFE-Cost(20)
SPSD-SFE	70 = SPSD-Cost(60) + SFE-Cost(10)
DSIFT-SFE	16 = DSIFT-Cost(10) + SFE-Cost(6)
SSIFT-SFE	47 = SSIFT-Cost(45) + SFE-Cost(2)
DCT-SFE	90 = DCT-Cost(80) + SFE-Cost(10)
SCT-SFE	108 = SCT-Cost(105) + SFE-Cost(3)
CMF	40 = Nuclear-Segmentation-Cost(40)
DPSD	95
SPSD	60 = Nuclear-Segmentation-Cost(40) + PSD-Cost(20)
DSIFT	10
SSIFT	45 = Nuclear-Segmentation-Cost(40)+SIFT-Cost(5)
DCT	80
SCT	105 = Nuclear-Segmentation-Cost(40) + SCT-Cost(65)
StackedPSD	100
AlexNet	1200/180 (CPU-Only/GPU-Acceleration)