面向农田信息采集的数字照片空间标识索引方法

摘要

针对精准农业多源信息采集管理应用的实际需求,提出一种基于时间阈值的数字照片自动空间位置标识方法和基于空间位置的数字照片索引及热链接方法.利用该方法开发了面向精准农业的农田空间多媒体信息采集管理软件,软件将数字照片采集、空间标识、快速索引、热链接表达和数据转换等环节作为一个完整的流程处理,支持普通数码照相机配合手持GPS设备、GPS数码相机和具有定位拍照功能手持设备等多种数据采集方式下的空间多媒体数据采集、空间位置标识索引和数据交换,实现了地理信息系统环境下的数字照片动态索引和关联,并给出了匹配照片时间阈值ε的取值范围.通过精准农业农田基础设施空间多媒体数据采集融合实际应用,验证了该方法的有效性和实用性.%A kind of automatic digital photo geocoding method based on time threshold, photo indexing and hotlink was developed for precision agriculture field data collection and management. By this method, field multimedia GIS software was developed with functions of digital photo collection, automatic synchronization and geocoding, indexing, hotlink and data conversion as an integrated flow. This software supports different data collection ways such as common digital cameras with hand-held GPS devices, digital cameras with built-in GPS module or smart hand-held PDA with GPS and video camera, which can achieve dynamic photo indexing and linking under GIS environment. Validity and practicality of the method and software were tested by application on field facilities distribution geo-referenced multimedia data collection and process.