Combined reconstruction and edge detection in dimensioning
Combined reconstruction and edge detection in dimensioning
复制标题
尺寸标注中的组合重建和边缘检测
DOI:
10.1088/0957-0233/24/12/125601
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发表时间:
2013
影响因子:
2.4
通讯作者:
Schorr
中科院分区:
文献类型:
--
作者:
Schorr
The result of tomographic examination is a series of two-dimensional (2D) or three-dimensional (3D) images, on which a diagnosis is based. Automatic evaluations of these images are rather common in nondestructive testing, in medical analysis this may partially be the case in the future. Typically the two tasks, image reconstruction and image evaluation, are treated separately. This paper describes an approach where the two steps are combined in just one method. By joint optimization of the two steps, the results are much superior to the separate treatment of the two tasks, as the comparisons in Louis (2008 SIAM J. Imaging Sci. 1 188–208) show. By constructing corresponding reconstruction filters, the algorithms are of filtered backprojection type, hence the computing time essentially remains the same as for the reconstruction of the density itself. We consider the reconstruction problem in x-ray tomography for the fan-beam geometry with flat detectors and edge detection. This method is then extended to filtered backprojection with Feldkamp-type kernels for the 3D cone-beam case. We calculate special reconstruction kernels which work also in the case of very noisy real data, and we present numerical examples from the measured data.
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影响因子:
1.9
作者:
Quinto, Eric Todd;Oktem, Ozan
通讯作者:
Oktem, Ozan
DOI:
--
发表时间:
2000
期刊:
IEEE Nuclear Science Symposium Conference Record
影响因子:
--
作者:
S. Bonnet;F. Peyrin;F. Turjman;R. Prost
通讯作者:
R. Prost
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
A. Begmatov;A. Begmatov
通讯作者:
A. Begmatov
影响因子:
2.1
作者:
A. Louis
通讯作者:
A. Louis
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
A. Louis
通讯作者:
A. Louis