发明名称 |
Method of reconstructing tomograms from polychromatic X-ray transmission image and image processing apparatus using the same |
摘要 |
A method of reconstructing tomograms from a polychromatic X-ray transmission image and an image processing apparatus using the same. An image of a target is reconstructed in consideration of a fact that an X-ray has a polychromatic X-ray spectrum and the target is dependent upon energy of the X-ray transmitted through the target, and thus an image without any beam hardening artifacts may be generated. In addition, measurement data for X-rays with respect to all wavelengths is used to reconstruct an image, thereby reconstructing an accurate image. |
申请公布号 |
US8958619(B2) |
申请公布日期 |
2015.02.17 |
申请号 |
US201213553033 |
申请日期 |
2012.07.19 |
申请人 |
Samsung Electronics Co., Ltd. |
发明人 |
Jang Kwang-eun;Sung Young-hun;Lee Jong-ha;Lee Kang-eui |
分类号 |
G06K9/00;G06T11/00 |
主分类号 |
G06K9/00 |
代理机构 |
Staas & Halsey LLP |
代理人 |
Staas & Halsey LLP |
主权项 |
1. A method of reconstructing tomograms, in which at least one X-ray spectrum is radiated to a target comprising at least one material in order to reconstruct the tomograms of the target from an X-ray transmitted through the target, the method comprising:
receiving transmission image data that is measured by detecting the X-ray transmitted through the target; obtaining first reconstruction information from the measured transmission image data; estimating transmission image data from the obtained first reconstruction information in consideration of a fact that the X-ray has a polychromatic X-ray spectrum; obtaining second reconstruction information from the estimated transmission image data; and generating the tomograms of the target from the obtained second reconstruction information, wherein the second reconstruction information is obtained based on a minimization of a cost function defined by introducing a generalized information theoretic discrepancy (GID) concept with respect to the measured transmission image data and estimated transmission image data. |
地址 |
Suwon-Si KR |