Apple CT Data: Ground truth reconstructions - 4 of 6
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<strong>Summary</strong><br> This submission is a supplementary material to the article [Coban 2020b]. As part of the manuscript, we release three simulated parallel-beam tomographic datasets of 94 apples with internal defects, the ground truth reconstructions and two defect label files. <strong>Description</strong><br> This Zenodo upload contains the ground truth reconstructed slices for each apple. In total, there are 72192 reconstructed slices, which have been divided into 6 separate submissions: <em>ground_truths_1.zip </em>(1 of 6): 10.5281/zenodo.4550729 <em>ground_truths_2.zip </em>(2 of 6): 10.5281/zenodo.4575904 <em>ground_truths_3.zip </em>(3 of 6): 10.5281/zenodo.4576078 <em>ground_truths_4.zip </em>(4 of 6): 10.5281/zenodo.4576122 (this upload) <em>ground_truths_5.zip </em>(5 of 6): 10.5281/zenodo.4576202 <em>ground_truths_6.zip </em>(6 of 6): 10.5281/zenodo.4576260 The simulated parallel-beam datasets and defect label files are also available through this project, via a separate Zenodo upload: 10.5281/zenodo.4212301. <strong>Apparatus</strong><br> The dataset is acquired using the custom-built and highly flexible CT scanner, FleX-ray Laboratory, developed by TESCAN-XRE, located at CWI in Amsterdam. This apparatus consists of a cone-beam microfocus X-ray point source that projects polychromatic X-rays onto a 1944-by-1536 pixels, 14-bit, flat detector panel. Full details can be found in [Coban 2020a]. <strong>Ground Truth Generation</strong> We reconstructed the raw tomographic data, which was captured at sample resolution of 54.2µm over a 360 degrees in circular and continuous motion in a cone-beam setup. A total of 1200 projections were collected, which were distributed evenly over the full circle. The raw tomographic data is available upon request. The ground truth reconstructed slices were generated based on Conjugate Gradient Least Squares (CGLS) reconstruction of each apple. The voxel grid in the reconstruction was 972px x 972px x 768px. The resolution in the ground truth reconstructions remained unchanged. All ground truth reconstructed slices are in .tif format. Each file is named "<em>appleNo_sliceNo.tif".</em> <strong>List of Contents</strong><br> The contents of the submission is given below. <strong>ground_truths_4</strong><strong>: </strong>This folder contains reconstructed slices of 16 apples<br> <strong>Additional Links</strong><br> These datasets are produced by the Computational Imaging group at Centrum Wiskunde & Informatica (CI-CWI). For any relevant Python/MATLAB scripts for the FleX-ray datasets, we refer the reader to our group's GitHub page. <strong>Contact Details</strong><br> For more information or guidance in using these dataset, please get in touch with s.b.coban [at] cwi.nl vladyslav.andriiashen [at] cwi.nl poulami.ganguly [at] cwi.nl <strong>Acknowledgments</strong><br> We acknowledge GREEFA for supplying the apples and further discussions.
<strong>摘要</strong><br> 本提交为论文[Coban 2020b]的补充材料。作为稿件的一部分，我们公开了94个带有内部缺陷苹果的三组模拟平行束层析数据集、真值重建结果以及两份缺陷标签文件。<br><strong>数据集说明</strong><br> 本次Zenodo上传包含每个苹果的真值重建切片。总计72192张重建切片，已分为6个独立提交包：<br><em>ground_truths_1.zip</em>（第1/6部分）：10.5281/zenodo.4550729<br><em>ground_truths_2.zip</em>（第2/6部分）：10.5281/zenodo.4575904<br><em>ground_truths_3.zip</em>（第3/6部分）：10.5281/zenodo.4576078<br><em>ground_truths_4.zip</em>（第4/6部分，即本上传包）：10.5281/zenodo.4576122<br><em>ground_truths_5.zip</em>（第5/6部分）：10.5281/zenodo.4576202<br><em>ground_truths_6.zip</em>（第6/6部分）：10.5281/zenodo.4576260<br>模拟平行束数据集与缺陷标签文件可通过本项目下的另一Zenodo上传包获取：10.5281/zenodo.4212301。<br><strong>实验装置</strong><br> 本数据集使用由位于阿姆斯特丹的荷兰数学与计算机科学研究中心（Centrum Wiskunde & Informatica, CWI）的TESCAN-XRE公司开发的定制化高柔性CT扫描仪FleX-ray Laboratory采集。该装置包含一个锥束微焦点X射线点光源，可将多色X射线投射至1944×1536像素、14位的平板探测器面板上。详细参数可参见[Coban 2020a]。<br><strong>真值生成流程</strong><br> 我们对原始层析数据进行了重建：该数据以54.2μm的采样分辨率，在锥束扫描设置下，以圆周连续运动采集360°范围的数据，共收集1200幅均匀分布于全圆周的投影图像。原始层析数据可按需获取。<br>真值重建切片基于共轭梯度最小二乘（Conjugate Gradient Least Squares, CGLS）算法对每个苹果的扫描数据重建得到。重建体素网格为972px×972px×768px，真值重建结果的分辨率保持不变。所有真值重建切片均为.tif格式，文件命名格式为<em>appleNo_sliceNo.tif</em>。<br><strong>内容清单</strong><br> 本提交包的内容如下：<br><strong>ground_truths_4</strong>：该文件夹包含16个苹果的重建切片。<br><strong>附加链接</strong><br> 本数据集由荷兰数学与计算机科学研究中心（Centrum Wiskunde & Informatica, CWI）计算成像组（Computational Imaging group, CI-CWI）制作。如需获取FleX-ray数据集相关Python/MATLAB脚本，请参阅本团队的GitHub页面。<br><strong>联系方式</strong><br> 如需获取更多信息或使用该数据集的相关指导，请联系：s.b.coban [at] cwi.nl、vladyslav.andriiashen [at] cwi.nl、poulami.ganguly [at] cwi.nl。<br><strong>致谢</strong><br> 感谢GREEFA提供苹果样本及相关讨论。
