Results of nodule detection along AUV track SO239_98-1_AUV8 (Abyss_174) during SONNE cruise SO239

Images were acquired by the DeepSurvey Camera on board GEOMAR's AUV Abyss. Nodules were delineated by the CoMoNoD algorithm [see related to references]. Result files are computed per AUV dive. Nodule detections below 5cm^2 are neglected as are detections above 707cm^2. Abundance statistics are computed per m^2 and gridded per m^2 as well. For overlapping images, max-pooling has been applied to select the values reported in the result files. Pixel values in the rendered maps correspond to the units reported in the ASCI files (median-nodule-size: cm^2, nodule-number: m^-2, percent-coverage: %, sorting, skewness and pixel-contributions are unit-free).

本数据集的影像由GEOMAR旗下自主水下航行器（Autonomous Underwater Vehicle, AUV）Abyss搭载的DeepSurvey相机（DeepSurvey Camera）采集。锰结核（nodules）由CoMoNoD算法（CoMoNoD）完成轮廓标注，相关说明详见参考文献。结果文件按单次AUV下潜航次生成。面积小于5平方厘米（cm²）或大于707平方厘米（cm²）的锰结核检测结果将被剔除。丰度统计以每平方米（m²）为单位计算，同时以每平方米为单位完成网格化处理。针对存在重叠的影像，采用最大池化（max-pooling）操作选取结果文件中的最终上报数值。渲染所得地图的像素值与ASCI文件（ASCI）中载明的单位保持一致：锰结核中位尺寸单位为平方厘米（cm²），结核数量单位为每平方米（m⁻²），覆盖率单位为百分比（%）；分选性、偏度及像素贡献度均为无量纲量。