# 1DSfM Dataset

（To be completed in v2 version）
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1DSfM (1-Day Structure from Motion) dataset typically contains large-scale unordered image collections and is a common benchmark for evaluating large-scale reconstruction and localization algorithms.

This page will discuss (reserved):

- **Data Format**: `bundler.out` file format, image lists, feature and matching information.
- **Loading and Conversion in PoSDK**: How to parse 1DSfM dataset output and convert it to PoSDK data structures such as `GlobalPoses`, `Tracks`, `CameraModels`, etc.
- **Evaluation Methods**: Methods for evaluating global pose accuracy in large-scale scenes.

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