The data for this competition comes from pottery sherds excavated from the Daxinzhuang Pit H690 archaeological site. This data is of exceptionally high scientific value and is unique.
We provide photographs of pottery sherds excavated from Daxinzhuang Pit H690. Generally, there is one image for the front (exterior) and one for the back (interior) of each sherd. All photographs were taken with the same camera settings and lighting conditions to accurately represent and preserve the true appearance of the pottery sherds as much as possible. All pottery sherds (sherd_id) and photographs (image_id) have a unique corresponding number. The numbering for pottery sherds and photographs can be found in the provided **jd_sherds_info.csv** table. 

The photos have a resolution of 1024x1024 pixels and are in high-quality JPEG format. Each photo includes a standard scale bar for size reference. Some sherds may show severe weathering, wear, or color distortion; it is also common that not all fragments of original artifacts can be found.

**Original Pottery Image Dataset**: 
sherd_images/ (Pottery Image Directory): 

Each pottery sherd provides two high-definition 1024x1024 pixel images: one for the exterior and one for the interior surface.

Images are named as JDxxxxx_exterior or JDxxxxx_interior. JDxxxxx is the corresponding sherd ID, _exterior indicates the outer surface of the sherd, and _interior indicates the inner surface of the sherd.

Participants should note that due to millennia of burial, some pottery sherds may exhibit significant weathering, wear, surface deposits, or color distortion. Furthermore, it is a common archaeological reality that not all fragments of original artifacts can be found. Robust models should be able to handle these real-world imperfections.

**Metadata**: 

**jd_sherds_info.csv** contains the basic information for excavated pottery sherds and images. It includes the following fields: 
(1) image_id: sherd image ID, e.g., JDxxxxx_exterior or JDxxxxx_interior.
(2) sherd_id: Unique ID for the pottery sherd, e.g., JDxxxxx, where JD stands for Jinan Daxinzhuang, and xxxxx is the sequential number of the sherd.
(3) unit: Excavation stratum or context of the sherd. L01-L14 indicates a stratigraphic layer; M indicates from H690 but specific layer is unknown; Z indicates a sherd from a large-mouthed zun (vessel), stratigraphic layer unknown.
(4) part: The part of the pottery vessel represented by the sherd.
(5) type: The type of pottery vessel (or possible type) to which the sherd belongs.
(6) image_side: The outer or inner surface of the pottery; exterior represents the outer surface, interior represents the inner surface.

**reference_shapes**/ (Reference Pottery Vessel Directory): 
	It contains reference materials for complete pottery vessels excavated from the site or related to the period, including photos of complete vessels and line drawings. These are for understanding pottery vessel morphology and aiding model design.

**sample_submission.csv** (Submission Sample File): 
	A CSV file containing the sequential number of the reconstructible group, the exterior and interior IDs of each reconstructible pottery sherd within the group, and an example photo of the assembled result.


本次竞赛的数据来自大辛庄灰坑H690考古发掘出土的陶片，数据具有极高的科研价值且具有唯一性 。
	我们提供大辛庄灰坑H690出土陶片的照片 。一般是陶片的正面、背面各一张 。所有照片均按照相同的相机设置和光照条件拍摄，尽可能还原和保留陶片的真实样貌 。所有陶片(sherd_id)和照片(image_id)都有一个唯一的编号，并相互对应 。陶片和照片的编号可以在提供的jd_sherds_info.csv表格中找到 。照片分辨率为1024x1024像素，格式为高质量JPEG格式 。每张照片均包含标准比例尺，用于尺寸参考 。部分陶片可能存在严重风化、磨损或颜色失真；并非所有原始器物都能找到所有碎片 。

**陶片原始图像数据**：
sherd_images/ (陶片图像目录):

图像编号JDxxxxx_exterior或JDxxxxx_interior ，JDxxxxx是对应的陶片编号，_exterior指示陶片的外侧（正面）照片，_interior指示陶片的内侧（背面）照片 。
参赛者应注意，由于数千年的埋藏，一些陶片可能表现出明显的风化、磨损、表面沉积物或颜色失真 。此外，考古学中常见的情况是并非原始器物的所有碎片都能被找到 。稳健的模型应能处理这些现实世界中的不完美之处 。

**元数据**:

**jd_sherds_info.csv**是出土陶片和影像的基本数据 。包含以下字段：
(1) image_id: 陶片影像编号，例如JDxxxxx_exterior或JDxxxxx_interior 。
(2) sherd_id: 陶片的唯一编号，例如JDxxxxx，其中JD代表Jinan Daxinzhuang，xxxxx是陶片的序列号 。
(3) unit: 陶片出土层位或场景 。L01-L14代表有明确出土层位；M代表出自H690但具体层位不明；Z代表是大口尊的陶片，层位不明 。
(4) part: 陶片代表的陶器部位 。
(5) type: 陶片归属的（或可能的）陶器器型 。
(6) image_side: 陶器的正反面，exterior代表正面，interior代表背面 。

**reference_shapes**/ (参考器形目录):

包含从遗址出土或与该时期相关的完整陶器器形参考资料，包括完整器物照片和线图 。它们用于理解器物形态，辅助模型设计 。

**sample_submission.csv** (提交样例文件):
CSV文件，包含可拼合组流水号，每组可拼合陶片的正面、反面编号，以及拼合后的照片示例。