Aerial Photo Single Frames = Frame Level Records for Multiple Agencies: 1937-Present

The Aerial Photography Single Frame Records collection is a large and diverse group of imagery acquired by Federal organizations from 1937 to the present. Over 6.4 million frames of photographic images are available for download as medium and high resolution digital products. The high resolution data provide access to photogrammetric quality scans of aerial photographs with sufficient resolution to reveal landscape detail and to facilitate the interpretability of landscape features. Coverage is predominantly over the United States and includes portions of Central America and Puerto Rico. Individual photographs vary in scale, size, film type, quality, and coverage.

航空摄影单帧记录数据集（Aerial Photography Single Frame Records）是一类规模宏大、类型多样的影像集合，由美国联邦机构自1937年起采集至今。现有超过640万帧摄影影像可作为中、高分辨率数字产品供用户下载。高分辨率数据可提供符合摄影测量质量标准的航空影像扫描件，其分辨率足以清晰展现地表细节，提升地物特征的解译性。该数据集覆盖范围以美国本土为主，同时涵盖中美洲部分区域及波多黎各。单幅影像在比例尺、画幅尺寸、胶片类型、成像质量及覆盖范围等方面均存在差异。