Exif数据格式浅析及其读取应用

Study on the Analysis and Application of Exif Format

照片中镶嵌着丰富的Exif信息,从中可提取出拍摄位置与时间等实用数据服务于我们的工作与生活。本文分析了Exif数据格式,介绍了其读取方法,总结了Exif信息提取算法。结合具体实例,进行测试验证,对日常手机定位精度情况进行了评估。最后,通过生产实践,验证Exif信息对于提高测绘与地理信息单位的作业效率与质量控制的促进作用,同时对应用前景进行了展望。

Image file mosaic rich Exif information, which can be extracted from shooting location and time utility data services to our work and life. Combined with specific examples, describes the Exif data format, extraction and applica- tion, summed up the Exif information extraction algorithm, test and mobile phone positioning accuracy. Finally, through the production practice, proved that the Exif information can improve operational efficiency.