臺灣博碩士論文加值系統

長久以來，檢查胸部X光(Chest X-ray, CXR)影像中的肺部輪廓已經廣泛的用於診斷肺部健康。在本論文中，我們提出了一種從CXR影像中分割出肺部輪廓的方法，其中分為三個階段。首先，我們針對CXR影像設計的對比度增強技術能有效的增強肺部與其周圍之間的對比度。接著，使用自適應二值化技術來預處理CXR影像來獲得前景資訊並減少CXR影像儲存空間。最後，使用各種完全卷積網路(Fully Convolutional Network, FCN)來驗證所提出方法的實用性。實驗結果顯示，所提出的方法與現有的模型相比，在CXR上分割肺部區域的精準度相當，但是推論時間與儲存空間分別減少了平均19.10%與94.6%。

Automatically locating the lung regions effectively and efficiently in digital chest X-ray (CXR) images is crucial in computer-aided diagnosis. In this paper, we propose a method to segment lungs from CXR images, which comprises of three steps. First, a contrast enhancement method specifically designed for CXR images is adopted. Secondly, using adaptive binarization to preprocess CXR images to obtain foreground information and reduce storage space usage. Thirdly, the practicality of the proposed methodology is validated through various fully convolutional neural networks. The experimental results revealed that the proposed method can achieve comparable segmentation accuracy to those of state-of-the-art methods with inferring time and memory consumption for the model input cut by 19.10% and 94.6% on average.

CHAPTER 1 INTRODUCTION
CHAPTER 2 RELATED WORKS
CHAPTER 3 PROPOSED METHOD
CHAPTER 4 EXPERIMENTAL RESULTS
CHAPTER 5 CONCLUSION

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