(a) ,
(b) ,
(c) ,
(d) Ground truth
(e) Chest radiograph
Figure 9: The reconstructed soft tissue images using the different numbers of exemplars. From left to right, the numbers of used exemplars () are 1, 3, and 5, respectively. rmse is the root mean squared error of the reconstructed soft tissue image. (a–c) are the reconstructed soft tissue images. (d) corresponds to the ground truth. The corresponding standard chest radiograph is (e).