A Support Construction for CT Image Based on K-Means Clustering

• 作者: Hiroyuki Shioya Wisan Dhammatorn
• 来源期刊: 电脑和通信(英文)
• 学科: 工学
• 关键词: SPARSE CT Reconstruction K-MEANS Clustering Total Variation FILTERING MAXIMUM ENTROPY THRESHOLDING
• 年，卷（期）: 2017,（1）
• 页码范围: 137-151
• 页数: 15页
• 分类号: TP39

摘要

Computer Tomography in medical imaging provides human internal body pictures in the digital form. The more quality images it provides, the better information we get. Normally, medical imaging can be constructed by projection data from several perspectives. In this paper, our research challenges and describes a numerical method for refining the image of a Region of Interest (ROI) by constructing support within a standard CT image. It is obvious that the quality of tomographic slice is affected by artifacts. CT using filter and K-means clustering provides a way to reconstruct an ROI with minimal artifacts and improve the degree of the spatial resolution. Experimental results are presented for improving the reconstructed images, showing that the approach enhances the overall resolution and contrast of ROI images. Our method provides a number of advantages: robustness with noise in projection data and support construction without the need to acquire any additional setup.