请问如何从jpg文件中读取gps信息，该信息应该包含在exif头信息里的
如题，不甚感激
[解决办法]
標準的文件格式包括：
? File Header,
? 0th IFD,
? 0th IFD Value,
? 1st IFD,
? 1st IFD Value,
? 1st (Thumbnail) Image Data,
? 0th (Primary) Image Data.
而
GPS IFD is a set of tags for recording GPS information. It is pointed to by the offset from the TIFF header (Value Offset) indicated by a GPS private tag value.
GPS Info IFD Pointer
Tag = 34853 (8825.H)
Type = LONG
Count = 1
Default = none
