Advanced tomographic reconstruction

高级断层扫描重建

• 批准号: 406304-2011
• 负责人: Daymond, Mark
• 金额: $ 2.3万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=472436
• 关键词: Advanced; tomographic; reconstruction

Tomography allow users to obtain three-dimensional (3D) pictures of the internal structure of a material, possibly while it is being deformed under a stress or temperature. Tomographic imaging works by taking multiple two-dimensional (2D) x-ray transmission images of an object; each image directly analogous to a conventional medical x-ray but in this case with a much higher spatial resolution. The object is rotated a small amount (less than a degree) with an image collected at each position. A computational algorithm is then used to produce a 3D model of the structure by combining all the 2D images. This proposal is to obtain the software and hardware capable of a new approach for this step, going from multiple 2D images to the 3D object. This new approach will be particularly suited to dealing with situations with noisy images, or where a full 360 degree rotation of the object is not possible.

断层扫描允许用户获得材料内部结构的三维（3D）图像，可能是当它在应力或温度下变形时。层析成像通过拍摄物体的多个二维（2D） x射线透射图像来工作；每个图像都直接类似于传统的医学x射线，但在这种情况下具有更高的空间分辨率。对象被旋转一小部分（小于一个度），在每个位置收集图像。然后使用计算算法通过组合所有2D图像来生成结构的3D模型。该提案旨在获得能够实现这一步骤的新方法的软件和硬件，从多个2D图像到3D对象。这种新方法将特别适用于处理有噪声图像的情况，或者对象不可能完全360度旋转的情况。