NOAA Integrated Ocean and Coastal Mapping (IOCM) orthorectified mosaic true color (RGB) and infrared (IR) image tiles, Kachemak Bay, Alaska, 2008 (NODC Accession 0074379)

These data are a NOAA National Ocean Service National Geodetic Survey (NOS/NGS) Integrated Ocean and Coastal Mapping (IOCM) Product. The images were acquired from a nominal altitude of 5,000 feet above ground level (AGL), using an Applanix Digital Sensor System (DSS). Imagery products are true color (prefix C) and infrared (prefix R) images. The IR images were acquired with a 850 nm cut on filter. Images have been orthorectified and mosaiced to produce a seamless data set. The data were collected for ongoing research efforts for testing and developing standards for airborne digital imagery.

The data set includes .TIF images with associated .ODM, .OVR, .GEOM, and .HIS files with .JPG and .PNG graphics and metadata files. Clouds may be present in the imagery. Mosaic data have not been histogram stretched and only minimal color balancing has been performed. The ground sample distance (GSD) for each pixel is 0.5 m.

Clouds may be present in the imagery. Mosaic data have not been histogram stretched and only minimal color balancing has been performed.

This imagery was acquired by the NOAA Remote Sensing Division to support NOAA's IOCM requirements. It is not intended for mapping, charting, or navigation.

本数据集为美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）下属国家海洋服务局（National Ocean Service, NOS）与国家大地测量局（National Geodetic Survey, NGS）联合推出的集成海洋与海岸测绘（Integrated Ocean and Coastal Mapping, IOCM）产品。影像采集时的标称飞行高度为距地面5000英尺（Above Ground Level, AGL），搭载Applanix数字传感器系统（Digital Sensor System, DSS）。该数据集包含两类影像产品：前缀为C的真彩色影像，以及前缀为R的红外影像。红外影像采用850nm截止滤光片进行拍摄。所有影像均已完成正射校正与镶嵌处理，形成无缝数据集。本次数据采集服务于机载数字影像标准的测试与开发相关持续研究工作。

本数据集包含带关联文件的.TIF格式影像，关联文件包括.ODM、.OVR、.GEOM及.HIS格式文件，同时配套.JPG、.PNG格式可视化图形与元数据文件。影像中可能存在云覆盖情况。镶嵌数据未经过直方图拉伸处理，仅进行了最低限度的色彩平衡操作。单像素对应的地面采样距离（Ground Sample Distance, GSD）为0.5米。

影像中可能存在云覆盖情况。镶嵌数据未经过直方图拉伸处理，仅进行了最低限度的色彩平衡操作。

本影像数据由NOAA遥感部门采集，旨在支持NOAA的集成海洋与海岸测绘相关工作需求，不得用于测绘、制图或导航作业。