An Improved Implementation of the Algebraic Reconstruction Techniques (ART) Method for Computed Tomography Reconstruction

• Main Authors: Li, Ping-Hui, 李炳輝
• Other Authors: Ching, Yu-Tai
• Format: Others
• Language: en_US
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/12879732691023472514

碩士 === 國立交通大學 === 資訊科學與工程研究所 === 102 === Computed tomography imaging is widely used in many fields. The image could be reconstructed by two main methods, Filtered Back Projection (FBP) and Algebraic Reconstruction Techniques (ART). The FBP method is fast and the quality of the image that is reconstructed by the ART method is better. In this thesis, we propose two methods to improve the ART method. First, we modify the process of back projection of the ART method. Instead of the uniform back-distribution, we use the non-uniform one. Second, we propose an area-based calculation for the weight in the implementation of back projection. Both methods improve the quality of the image and the first one makes the ART method converge faster than the classic implementation.