Table 1:
Symbols and their definitions
| Symbol | Definition |
|---|---|
| BB_AP | Bounding box length of anterior-posterior direction |
| SD_IDM | Standard deviation of inverse difference moment |
| ϵ | Area distortion metric |
| Np | The number of peaks |
| Ns | The number of spiculations |
| Nl | The number of lobulations |
| Na | The number of attached peaks |
| s1 & s2 | The proposed spiculation scores (sharpness and irregularity) |
| sa & sb | Dhara’s spiculation scores [15] |
| Ts | Threshold to binarize RS |
| Th | Minimum height of spiculaiton |
| TΩ | Maximum solid angle of spiculation |
| sr | Steradian, the SI unit of solid angle |