Research Article
Classification of Region of Interest in Mammograms Using Dual Contourlet Transform and Improved KNN
Table 3
Classification performance (%) using KNN and improved KNN tested between normal and abnormal.
| Feature | Dual-CT | Contourlet | Wavelet | Normal | Abnormal | Normal | Abnormal | Normal | Abnormal |
| KNN (mean) | 84.47 | 79.66 | 87.38 | 53.39 | 88.35 | 61.02 | Improved KNN (mean) | 96.12 | 88.14 | 98.54 | 80.51 | 95.15 | 81.36 |
| KNN (SD) | 85.44 | 73.73 | 83.98 | 61.86 | 87.86 | 62.71 | Improved KNN (SD) | 96.60 | 88.14 | 97.57 | 85.59 | 94.17 | 87.29 |
| KNN (smoothness) | 83.98 | 77.97 | 90.29 | 61.02 | 87.86 | 67.80 | Improved KNN (smoothness) | 94.66 | 92.37 | 96.60 | 81.36 | 90.78 | 87.29 |
| KNN (skewness) | 83.98 | 77.12 | 86.41 | 55.08 | 83.90 | 59.32 | Improved KNN (skewness) | 95.15 | 88.98 | 93.69 | 83.05 | 91.75 | 84.95 |
| KNN (uniformity) | 85.92 | 62.71 | 88.83 | 61.36 | 84.47 | 66.95 | Improved KNN (uniformity) | 98.54 | 84.75 | 96.60 | 87.29 | 96.60 | 84.75 |
| KNN (entropy) | 84.95 | 70.34 | 87.38 | 58.44 | 82.52 | 63.56 | Improved KNN (entropy) | 98.06 | 87.29 | 99.03 | 83.90 | 97.57 | 86.44 |
| KNN (contrast) | 83.98 | 67.80 | 89.81 | 53.39 | 80.58 | 66.10 | Improved KNN (contrast) | 96.60 | 80.51 | 98.06 | 85.59 | 94.66 | 89.83 |
| KNN (correlation) | 84.47 | 80.51 | 85.92 | 63.56 | 86.89 | 64.41 | Improved KNN (correlation) | 96.12 | 89.83 | 96.60 | 84.75 | 90.29 | 84.75 |
| KNN (homogeneity) | 87.86 | 69.49 | 86.89 | 59.32 | 86.41 | 60.17 | Improved KNN (homogeneity) | 98.54 | 83.05 | 98.54 | 85.59 | 95.63 | 87.29 |
|
|
SD represents standard deviation; bold font number indicates the best performance in each class.
|