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. 2018 Apr 29;2018:7952946. doi: 10.1155/2018/7952946

Figure 4.

Figure 4

Vertebrae recognition using Cascade of Boosted Classifiers based on extended set of Haar-like features. Classifiers training based on the AdaBoost algorithm. (a) Initial image. (b) Positively detected vertebrae marked with bounding boxes for visualization.