Cropped single instrument frames subset from Cholec80

This dataset is a subset of the original Cholec80 dataset and is used by the OpenMIBOOD framework to evaluate a specific out-of-distribution setting.When using this dataset, it is mandatory to cite the corresponding publication (OpenMIBOOD) and to follow the acknowledgement and citation requirements of the original dataset (Cholec80).

The original Cholec80 dataset (associated paper,Homepage) consists of 80 cholecystectomy surgery videos recorded at 25 fps, performed by 13 surgeons. It includes phase annotations (25 fps) and tool presence labels (1 fps), with phase definitions provided by a senior surgeon. A tool is considered present if at least half of its tip is visible. The dataset categorizes tools into seven types: Grasper, Bipolar, Hook, Scissors, Clipper, Irrigator, and Specimen bag. Multiple tools may be present in each frame. Additionally, 76 of the 80 videos exhibit a strong black vignette.

For this dataset subset, frames were extracted based on tool presence labels, selecting only those containing Grasper, Bipolar, Hook, or Clipper while ensuring that only a single tool appears per frame. To enhance visual consistency, the black vignette was removed by extracting an inner rectangular region, where applicable.

本数据集为原始Cholec80数据集（Cholec80 dataset）的子集，由OpenMIBOOD框架用于评估特定的分布外（out-of-distribution）设置。使用本数据集时，必须引用对应的OpenMIBOOD相关出版物，并遵循原始Cholec80数据集的致谢与引用要求。

原始Cholec80数据集（关联论文、项目主页）包含由13名外科医生完成的80段胆囊切除术手术视频，帧率为25fps。该数据集包含25fps的手术阶段标注与1fps的器械存在标签，手术阶段定义由资深外科医生给出。当器械尖端至少一半可见时，即判定该器械存在。数据集将器械分为7类：抓钳（Grasper）、双极电凝钳（Bipolar）、钩子（Hook）、剪刀（Scissors）、施夹器（Clipper）、冲洗器（Irrigator）以及标本袋（Specimen bag）。单帧画面中可同时存在多件器械。此外，80段视频中的76段带有明显的黑色暗角效果。

针对本次发布的数据集子集，研究人员基于器械存在标签提取视频帧，仅保留包含抓钳、双极电凝钳、钩子或施夹器的视频帧，且确保每帧仅出现单一件器械。为提升视觉一致性，研究人员在适用场景下通过提取内部矩形区域的方式移除了黑色暗角效果。