SIA

This FAIRsharing record describes: The Simple Image Access protocol (SIA) provides capabilities for the discovery, description, access, and retrieval of multi-dimensional image datasets, including 2-D images as well as datacubes of three or more dimensions. SIA data discovery is based on the ObsCore Data Model (ObsCoreDM), which primarily describes data products by the physical axes (spatial, spectral, time, and polarization). Image datasets with dimension greater than 2 are often referred to as datacubes, cube or image cube datasets and may be considered examples of hypercube or n-cube data. In this document the term ?image? refers to general multi-dimensional datasets and is synonymous with these other terms unless the image dimensionality is otherwise specified. SIA provides capabilities for image discovery and access. Data discovery and metadata access (using ObsCoreDM) are defined here. The capabilities for drilling down to data files (and related resources) and services for remote access are defined elsewhere, but SIA also allows for direct access to retrieval.

本FAIRsharing记录描述如下内容：简单图像访问协议（Simple Image Access Protocol，SIA）可实现多维图像数据集的发现、描述、访问与检索，涵盖二维图像以及三维及以上维度的数据立方体（datacube）。SIA的数据发现基于核心观测数据模型（ObsCore Data Model，ObsCoreDM），该模型主要通过空间、光谱、时间与偏振四类物理轴对数据产品进行描述。维度大于2的图像数据集常被称为数据立方体、立方体或图像立方体数据集，亦可视为超立方体或n维立方体数据的示例。本文中，"图像"一词指代通用多维数据集，除非特别指定图像维度，否则与上述其他术语同义。SIA具备图像发现与访问能力，本文定义了基于ObsCoreDM的数据发现与元数据访问功能。针对数据文件（及相关资源）的下钻检索功能与远程访问服务的定义见于其他文档，但SIA同时支持直接检索访问。

搜集汇总

背景与挑战

背景概述

SIA（简单图像访问协议）是一个用于多维度图像数据集（包括2-D图像和数据立方体）发现、描述、访问和检索的协议，基于ObsCore数据模型（ObsCoreDM）通过物理轴（如空间、光谱、时间）进行数据产品描述。它支持图像发现和元数据访问，并允许直接访问检索功能，适用于处理复杂多维图像数据的场景。