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jpg图片的Exif及gps信息和示例分析
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jpg
图片的Exif及gps
信息：
拍照时gps相关
信息写到EXIF块中。
在exif2.1就有gps的
信息块。参见《Exif2-2.PDF》
Exif是英文Exchangeable Image File(可交换图像文件)的缩写，
最初由日本电子工业发展协会(JEIDA --Japan Electronic Industry Development Association) 制订，目前的最新版本是2.21 版。
国际标准化组织(ISO)正在制订的相机文件设计标准（DCF -- Design role for Camera File system）可能以Exif2.1为基础。
Exif 文件实际是JPEG文件的一种，遵从JPEG标准，只是在文件头
信息中增加了有关拍摄
信息的内容和索引图。所以你可以使用任何
支持JPEG格式的图像工具软件观看或修改Exif文件，但，打开时可能看不到Exif
信息，一旦修改，Exif
信息可能丢失。
简单来说，EXIF
信息就是由数码相机在拍摄过程中采集一系列的
信息，然后把
信息放置在我们熟知的 JPEG/TIFF 文件的头部，
也就是说 EXIF
信息是镶嵌在 JPEG/TIFF 图像文件格式内的一组拍摄参数，主要包括摄影时的光圈、快门、ISO、日期时间等各种
与当时摄影条件相关的讯息，相机品牌型号，色彩编码，拍摄时录制的声音以及全球定位系统（GPS）等
信息。
简单的说，它就好像是傻瓜相机的日期打印功能一样，只不过 EXIF
信息所记录的资讯更为详尽和完备。
Exif的标识：所有的JPEG文件以字符串“0xFFD8”开头，并以字符串“0xFFD9”结束。文件头中有一系列“0xFF??”格式的字符串，称为“标识”，
用来标记JPEG文件的
信息段。“0xFFD8”表示图像
信息开始，“0xFFD9”表示图像
信息结束，这两个标识后面没有
信息，而其它标识紧跟一些
信息字符。
0xFFE0 -- 0xFFEF之间的标识符称为“应用标记”，没有被常规JPEG文件利用，Exif正是利用这些
信息串记录拍摄
信息如快门速度、光圈值等，
甚至可以包括全球定位
信息。按照Exif2.1标准对这些标识符的定义，数码相机可以把各种拍摄
信息记入数码图像中，应用软件可以读取这些数据，
再按照Exif2.1标准，检索出它们的具体含义。
GPS，Global Positioning System(全球卫星定位系统)，是美国从20世纪70年代开始耗巨资研制，于1994年全面建成，具有在海、陆、空进行全方位
实时三维导航与定位能力的新一代卫星导航与定位系统。
越来越多的数码相机厂商也开始在他们的新产品里提供了GPS功能的支持，（如Kodak DCS760等）可将照片拍摄瞬间所处经度、纬度、海拔的三维空间
定位数据记载在
图片里，只要
图片里保留了完整的 GPS
信息，IExif 就能准确地再现给查看者。
jpg整个文件的大体结构，由标记块组成，一般标记块由标记码(2字节)+长度(2字节)+数据(长度n)，只有SOI和EOI没有长度和数据。长度为大端数据。
标记码由两个字节构成，其前一个字节是固定值0xFF，后一个字节则根据不同意义有不同数值。
JFIF格式的JPEG文件(*.jpg)的一般顺序为：
SOI(0xFFD8) Start of Image，图像开始
APP0(0xFFE0) Application，应用程序0
[APPn(0xFFEn)]可选 Application，应用程序n
DQT(0xFFDB) Define Quantization Table，定义量化表
SOF0(0xFFC0) Start of Frame，帧图像开始
DHT(0xFFC4) Difine Huffman Table，定义哈夫曼表
SOS(0xFFDA) Start of Scan，扫描开始 12字节
压缩数据
EOI(0xFFD9) End of Image，图像结束 2字节
(0xFF后的0xD0~0xD7,则组成RSTn标记)
Exif格式的JPEG文件(*.jpg)的一般顺序为：
SOI(0xFFD8) Start of Image，图像开始
APP1(0xFFE1) Application，应用程序1
DQT(0xFFDB) Define Quantization Table，定义量化表
DHT(0xFFC4) Difine Huffman Table，定义哈夫曼表
SOF0(0xFFC0) Start of Frame，帧图像开始
SOS(0xFFDA) Start of Scan，扫描开始 12字节
压缩数据
EOI(0xFFD9) End of Image，图像结束 2字节
下面的内容是从Exif2-2.pdf上拷贝下来的：
APP1的组成：
APP1 Marker FF E1
Length 3A 59
Exif Identifier Code Exif
TIFF Header MM 002A 00000008
0th IFD
...
Exif IFD
1st IFD
JPEGInterchangeFormat
JPEGInterchangeFormatLength
JPEG Thumbnail
TIFF Header
Name Size (Bytes) Value
Byte Order 2 either "II" (4949.H) (little endian) or "MM" (4D4D.H)(big endian)
42 2 002A.H (fixed)
Offset IFD 4 0th IFD offset. If the TIFF header is followed immediately by the 0th IFD, it is written as 00000008.H.
JPEG Thumbnail组成：(Compressed Thumbnail)
SOI
DQT
DHT
SOF
SOS
Compressed Data
EOI
(0xFF后的0xD0~0xD7,则组成RSTn标记)
采用了TIFF VER 6.0的文件头相关
信息。下面是Exif2-2的简要
信息：
File Header,
0th IFD,
0th IFD Value,
1st IFD,
1st IFD Value,
1st (Thumbnail) Image Data,
0th (Primary) Image Data.
IFD：
2bytes number of fields
12bytes Tag:
Bytes 0-1 Tag
Bytes 2-3 Type
Bytes 4-7 Count The number of values, NOT bytes, such as SHORT,COUNT=1 is 2bytes
Bytes 8-11 Value or Offset This tag records the offset from the start of the TIFF header In cases where the value fits in 4 bytes, the value itself is recorded
4bytes nextIFD
TYPE:
1 = BYTE An 8-bit unsigned integer.,
2 = ASCII An 8-bit byte containing one 7-bit ASCII code. The final byte is terminated with NULL.,
3 = SHORT A 16-bit (2-byte) unsigned integer,
4 = LONG A 32-bit (4-byte) unsigned integer,
5 = RATIONAL Two LONGs. The first LONG is the numerator and the second LONG expresses the denominator.,
7 = UNDEFINED An 8-bit byte that can take any value depending on the field definition,
9 = SLONG A 32-bit (4-byte) signed integer (2's complement notation),
10 = SRATIONAL Two SLONGs. The first SLONG is the numerator and the second SLONG is the denominator.
Exif IFD: Exif IFD is a set of tags for recording Exif-specific attribute information
Exif IFD Pointer
Tag = 34665 (8769.H)
Type = LONG
Count = 1
Default = none
GPS IFD:GPS IFD is a set of tags for recording GPS information
GPS Info IFD Pointer
Tag = 34853 (8825.H) 2bytes
Type = LONG 0004 2bytes
Count = 1 00000001 4bytes
Default = none 4bytes 例：000002A2
Interoperability IFD:Interoperability IFD is composed of tags which stores the information to ensure the Interoperability and pointed by
the following tag located in Exif IFD
Interoperability IFD Pointer
Tag = 40965 (A005.H)
Type = LONG
Count = 1
Default = None
TIFF Rev. 6.0 Attribute Information
Tag ID
Tag Name Field Name Dec Hex Type Count
A. Tags relating to image data structure
Image width ImageWidth 256 100 SHORT or LONG 1
Image height ImageLength 257 101 SHORT or LONG 1
Number of bits per component BitsPerSample 258 102 SHORT 3
Compression scheme Compression 259 103 SHORT 1
Pixel composition PhotometricInterpretation 262 106 SHORT 1
Orientation of image Orientation 274 112 SHORT 1
Number of components SamplesPerPixel 277 115 SHORT 1
Image data arrangement PlanarConfiguration 284 11C SHORT 1
Subsampling ratio of Y to C YCbCrSubSampling 530 212 SHORT 2
Y and C positioning YCbCrPositioning 531 213 SHORT 1
Image resolution in width XResolution 282 11A RATIONAL 1
Image resolution in height YResolution 283 11B RATIONAL 1
Unit of X and Y resolution ResolutionUnit 296 128 SHORT 1
B. Tags relating to recording offset
Image data location StripOffsets 273 111 SHORT or LONG *S
Number of rows per strip RowsPerStrip 278 116 SHORT or LONG 1
Bytes per compressed strip StripByteCounts 279 117 SHORT or LONG *S
Offset to JPEG SOI JPEGInterchangeFormat 513 201 LONG 1
Bytes of JPEG data JPEGInterchangeFormatLength 514 202 LONG 1
C. Tags relating to image data characteristics
Transfer function TransferFunction 301 12D SHORT 3 * 256
White point chromaticity WhitePoint 318 13E RATIONAL 2
Chromaticities of primaries PrimaryChromaticities 319 13F RATIONAL 6
Color transf matrix coef YCbCrCoefficients 529 211 RATIONAL 3
Pair of black and white refl ReferenceBlackWhite 532 214 RATIONAL 6
D. Other tags
File change date and time DateTime 306 132 ASCII 20
Image title ImageDescription 270 10E ASCII Any
Image input equipment manuf Make 271 10F ASCII Any
Image input equipment model Model 272 110 ASCII Any
Software used Software 305 131 ASCII Any
Person who created the image Artist 315 13B ASCII Any
Copyright holder Copyright 33432 8298 ASCII Any
*S Chunky format: StripsPerImage
Planar format: SamplesPerImage * StripsPerImage
StripsPerImage = floor((ImageLength + RowsPerStrip -1)/ RowsPerStrip)
Exif IFD Attribute Information
Tag ID
Tag Name Field Name Dec Hex Type Count
A. Tags Relating to Version
Exif version ExifVersion 36864 9000 UNDEFINED 4
Supported Flashpix version FlashpixVersion 40960 A000 UNDEFINED 4
B. Tag Relating to Image Data Characteristics
Color space information ColorSpace 40961 A001 SHORT 1
C. Tags Relating to Image Configuration
Meaning of each component ComponentsConfiguration 37121 9101 UNDEFINED 4
Image compression mode CompressedBitsPerPixel 37122 9102 RATIONAL 1
Valid image width PixelXDimension 40962 A002 SHORT or LONG 1
Valid image height PixelYDimension 40963 A003 SHORT or LONG 1
D. Tags Relating to User Information
Manufacturer notes MakerNote 37500 927C UNDEFINED Any
User comments UserComment 37510 9286 UNDEFINED Any
E. Tag Relating to Related File Information
Related audio file RelatedSoundFile 40964 A004 ASCII 13
F. Tags Relating to Date and Time
Date time of orig data gen DateTimeOriginal 36867 9003 ASCII 20
Date time of digi data gen DateTimeDigitized 36868 9004 ASCII 20
DateTime subseconds SubSecTime 37520 9290 ASCII Any
DateTimeOriginal subseconds SubSecTimeOriginal 37521 9291 ASCII Any
DateTimeDigitized subseconds SubSecTimeDigitized 37522 9292 ASCII Any
G. Tags Relating to Picture-Taking Conditions
See Table 5
H. Other Tags
Unique image ID ImageUniqueID 42016 A420 ASCII 33
G. Tags Relating to Picture-Taking Conditions
Exposure time ExposureTime 33434 829A RATIONAL 1
F number FNumber 33437 829D RATIONAL 1
Exposure program ExposureProgram 34850 8822 SHORT 1
Spectral sensitivity SpectralSensitivity 34852 8824 ASCII Any
ISO speed rating ISOSpeedRatings 34855 8827 SHORT Any
Optoelectric conv factor OECF 34856 8828 UNDEFINED Any
Shutter speed ShutterSpeedValue 37377 9201 SRATIONAL 1
Aperture ApertureValue 37378 9202 RATIONAL 1
Brightness BrightnessValue 37379 9203 SRATIONAL 1
Exposure bias ExposureBiasValue 37380 9204 SRATIONAL 1
Maximum lens aperture MaxApertureValue 37381 9205 RATIONAL 1
Subject distance SubjectDistance 37382 9206 RATIONAL 1
Metering mode MeteringMode 37383 9207 SHORT 1
Light source LightSource 37384 9208 SHORT 1
Flash Flash 37385 9209 SHORT 1
Lens focal length FocalLength 37386 920A RATIONAL 1
Subject area SubjectArea 37396 9214 SHORT 2 or 3 or 4
Flash energy FlashEnergy 41483 A20B RATIONAL 1
Spatial frequency response SpatialFrequencyResponse 41484 A20C UNDEFINED Any
Focal plane X resolution FocalPlaneXResolution 41486 A20E RATIONAL 1
Focal plane Y resolution FocalPlaneYResolution 41487 A20F RATIONAL 1
Focal plane resolution unit FocalPlaneResolutionUnit 41488 A210 SHORT 1
Subject location SubjectLocation 41492 A214 SHORT 2
Exposure index ExposureIndex 41493 A215 RATIONAL 1
Sensing method SensingMethod 41495 A217 SHORT 1
File source FileSource 41728 A300 UNDEFINED 1
Scene type SceneType 41729 A301 UNDEFINED 1
CFA pattern CFAPattern 41730 A302 UNDEFINED Any
Custom image processing CustomRendered 41985 A401 SHORT 1
Exposure mode ExposureMode 41986 A402 SHORT 1
White balance WhiteBalance 41987 A403 SHORT 1
Digital zoom ratio DigitalZoomRatio 41988 A404 RATIONAL 1
Focal length in 35 mm film FocalLengthIn35mmFilm 41989 A405 SHORT 1
Scene capture type SceneCaptureType 41990 A406 SHORT 1
Gain control GainControl 41991 A407 RATIONAL 1
Contrast Contrast 41992 A408 SHORT 1
Saturation Saturation 41993 A409 SHORT 1
Sharpness Sharpness 41994 A40A SHORT 1
Device settings description DeviceSettingDescription 41995 A40B UNDEFINED Any
Subject distance range SubjectDistanceRange 41996 A40C SHORT 1
GPS Attribute Information
Tag ID
Tag Name Field Name Dec Hex Type Count
A. Tags Relating to GPS
GPS tag version GPSVersionID 0 0 BYTE 4
North or South Latitude GPSLatitudeRef 1 1 ASCII 2
Latitude GPSLatitude 2 2 RATIONAL 3
East or West Longitude GPSLongitudeRef 3 3 ASCII 2
Longitude GPSLongitude 4 4 RATIONAL 3
Altitude reference GPSAltitudeRef 5 5 BYTE 1
Altitude GPSAltitude 6 6 RATIONAL 1
GPS time (atomic clock) GPSTimeStamp 7 7 RATIONAL 3
GPS satellites used GPSSatellites 8 8 ASCII Any
GPS receiver status GPSStatus 9 9 ASCII 2
GPS measurement mode GPSMeasureMode 10 A ASCII 2
Measurement precision GPSDOP 11 B RATIONAL 1
Speed unit GPSSpeedRef 12 C ASCII 2
Speed of GPS receiver GPSSpeed 13 D RATIONAL 1
Reference dir of movement GPSTrackRef 14 E ASCII 2
Direction of movement GPSTrack 15 F RATIONAL 1
Reference direction of image GPSImgDirectionRef 16 10 ASCII 2
Direction of image GPSImgDirection 17 11 RATIONAL 1
Geodetic survey data used GPSMapDatum 18 12 ASCII Any
Reference latitude of dest GPSDestLatitudeRef 19 13 ASCII 2
Latitude of destination GPSDestLatitude 20 14 RATIONAL 3
Reference longitude of dest GPSDestLongitudeRef 21 15 ASCII 2
Longitude of destination GPSDestLongitude 22 16 RATIONAL 3
Reference bearing of dest GPSDestBearingRef 23 17 ASCII 2
Bearing of destination GPSDestBearing 24 18 RATIONAL 1
Reference distance to dest GPSDestDistanceRef 25 19 ASCII 2
Distance to destination GPSDestDistance 26 1A RATIONAL 1
Name GPS process method GPSProcessingMethod 27 1B UNDEFINED Any
Name of GPS area GPSAreaInformation 28 1C UNDEFINED Any
GPS date GPSDateStamp 29 1D ASCII 11
GPS differential correction GPSDifferential 30 1E SHORT 1
如何
分析一个Exif的jpg文件中的gps
信息？
实例
分析：PICT0021.JPG
00 FF D8 FF E1 3A 59 45 78 69 66 00 00 4D 4D 00 2A
10 00 00 00 08 00 0C 01 0E 00 02 00 00 00 0E 00 00
20 03 F4 01 0F 00 02 00 00 00 20 00 00 04 02 01 10
30 00 02 00 00 00 20 00 00 04 22 01 12 00 03 00 00
40 00 01 00 01 00 00 01 1A 00 05 00 00 00 01 00 00
50 04 42 01 1B 00 05 00 00 00 01 00 00 04 4A 01 28
60 00 03 00 00 00 01 00 02 00 00 01 31 00 02 00 00
70 00 20 00 00 04 52 01 32 00 02 00 00 00 14 00 00
80 04 72 02 13 00 03 00 00 00 01 00 01 00 00 87 69
90 00 04 00 00 00 01 00 00 00 9E 88 25 00 04 00 00
A0 00 01 00 00 02 A2 00 00 02 E4 00 28 82 9A 00 05
B0 00 00 00 01 00 00 04 86 82 9D 00 05 00 00 00 01
C0 00 00 04 8E 88 22 00 03 00 00 00 01 00 02 00 00
D0 88 27 00 03 00 00 00 01 00 C8 00 00 90 00 00 07
E0 00 00 00 04 30 32 32 31 90 03 00 02 00 00 00 14
F0 00 00 04 96 90 04 00 02 00 00 00 14 00 00 04 AA
100 91 01 00 07 00 00 00 04 01 02 03 00 91 02 00 05
110 00 00 00 01 00 00 04 BE 92 01 00 0A 00 00 00 01
120 00 00 04 C6 92 02 00 05 00 00 00 01 00 00 04 CE
130 92 04 00 0A 00 00 00 01 00 00 04 D6 92 05 00 05
140 00 00 00 01 00 00 04 DE 92 06 00 05 00 00 00 01
150 00 00 04 E6 92 07 00 03 00 00 00 01 00 02 00 00
160 92 08 00 03 00 00 00 01 00 00 00 00 92 09 00 03
170 00 00 00 01 00 20 00 00 92 0A 00 05 00 00 00 01
180 00 00 04 EE 92 7C 00 07 00 00 00 40 00 00 04 F6
190 A0 00 00 07 00 00 00 04 30 31 30 30 A0 01 00 03
1A0 00 00 00 01 00 01 00 00 A0 02 00 04 00 00 00 01
1B0 00 00 12 00 A0 03 00 04 00 00 00 01 00 00 0D 80
1C0 A0 05 00 04 00 00 00 01 00 00 02 84 A2 15 00 05
1D0 00 00 00 01 00 00 05 36 A2 17 00 03 00 00 00 01
1E0 00 02 00 00 A3 00 00 07 00 00 00 01 03 00 00 00
1F0 A3 01 00 07 00 00 00 01 01 00 00 00 A4 01 00 03
200 00 00 00 01 00 00 00 00 A4 02 00 03 00 00 00 01
210 00 00 00 00 A4 03 00 03 00 00 00 01 00 00 00 00
220 A4 04 00 05 00 00 00 01 00 00 05 3E A4 05 00 03
230 00 00 00 01 00 29 00 00 A4 06 00 03 00 00 00 01
240 00 00 00 00 A4 07 00 03 00 00 00 01 00 00 00 00
250 A4 08 00 03 00 00 00 01 00 00 00 00 A4 09 00 03
260 00 00 00 01 00 00 00 00 A4 0A 00 03 00 00 00 01
270 00 00 00 00 A4 0B 00 07 00 00 00 04 00 00 00 00
280 A4 0C 00 03 00 00 00 01 00 00 00 00 00 00 00 00
290 00 02 00 01 00 02 00 00 00 04 52 39 38 00 00 02
2A0 00 07 00 00 00 04 30 31 30 30 00 00 00 00 00 05
2B0 00 00 00 01 00 00 00 04 02 02 00 00 00 01 00 02
2C0 00 00 00 02 4E 00 00 00 00 02 00 05 00 00 00 03
2D0 00 00 05 46 00 03 00 02 00 00 00 02 45 00 00 00
2E0 00 04 00 05 00 00 00 03 00 00 05 5E 00 00 00 00
2F0 00 06 01 03 00 03 00 00 00 01 00 06 00 00 01 1A
300 00 05 00 00 00 01 00 00 05 76 01 1B 00 05 00 00
310 00 01 00 00 05 7E 01 28 00 03 00 00 00 01 00 02
320 00 00 02 01 00 04 00 00 00 01 00 00 07 F4 02 02
330 00 04 00 00 00 01 00 00 32 5D 00 00 00 00 00 00
FF D8 SOI
FF E1 APP1
3A 59 APP1 LENGTH
45 78 69 66 00 00 Exif ASCII结束符两个
4D 4D MM big endian TIFF Header (注意小端的为：49492A00 08000000)
00 2A fixed
00 00 00 08 IFD0 offset
00 0C IFD0: number of TAGs 12个tag，每个12字节。
01 0E TAG Image title
00 02 TYPE ASCII
00 00 00 0E count 最多13个字符
00 00 03 F4 offset +0C=0x400 可以看到DCIM\100MEDIA (0x0c from the start of the TIFF header 4D4D MM)
01 0F TAG Image input equipment manuf
00 02 TYPE ASCII
00 00 00 20 count 最多31个字符
00 00 04 02 offset +0c=0x040E 可以看到TCL
01 10 TAG Image input equipment model
00 02 TYPE ASCII
00 00 00 20 count
00 00 04 22 offset +0c=0x042E 可以看到SDV05
01 12 TAG Orientation of image
00 03 SHORT 00 01
00 00 00 01 count
00 01 00 00 value
01 1A TAG Image resolution in width 0x0442+0c=0x44E，可以看到00 00 00 48/00 00 00 01
00 05 RATIONAL
00 00 00 01 count
00 00 04 42 offset +0c=0x44E，可以看到00 00 00 48/00 00 00 01
01 1B TAG Image resolution in height
00 05 RATIONAL
00 00 00 01
00 00 04 4A offset+0c=0x456 可以看到00 00 00 48/00 00 00 01
01 28 Unit of X and Y resolution
00 03 SHORT 00 02
00 00 00 01
00 02 00 00
01 31 Software used
00 02 ASCII
00 00 00 20 count
00 00 04 52 offset +0c =0x45E 可以看到0.0.2
01 32 DateTime
00 02 ASCII
00 00 00 14 20字节
00 00 04 72 offset+0c=0x47E，可以看到2012:07:29 21:28:18
02 13 YCbCrPositioning
00 03 SHORT 00 01
00 00 00 01
00 01 00 00
87 69 Exif IFD Pointer
00 04 LONG
00 00 00 01 count
00 00 00 9E offset+0c=0xAA
88 25 GPS Info IFD Pointer
00 04 LONG
00 00 00 01 count
00 00 02 A2 offset+0c=0x02AE
00 00 02 E4 nextIFD IFD1 offset
00 28 Exif IFD number of TAGs
82 9A ExposureTime
00 05 RATIONAL
00 00 00 01 count
00 00 04 86 offset+0c=0x0492
...
Exif的相关信息这里先不做分析，请大家参照上面的文档自己分析了。
这里主要是分析GPS相关信息
GPS Info IFD Pointer 0x02AE 从上面数据2A0行的后面看数据
00 05 count of TAGs
00 00 GPSVersionID
00 01 BYTE
00 00 00 04 count
02 02 00 00 value 2.2.0.0
00 01 GPSLatitudeRef
00 02 ASCII
00 00 00 02 count
4E 00 00 00 N North
00 02 GPSLatitude
00 05 RATIONAL 前4字节为分子，后4字节为分母，十六进制先转为十进制
00 00 00 03 count
00 00 05 46 offset+0c=0x552 16 00 00 00 01 00 00 00 22 00 00 00 01 00 00 00 51 00 00 00 04 00 00 00
22/1=22 34/1=34 81/4= 20.25
通过windows的右键属性看详细
信息：22；34；20.249999999999915
00 03 GPSLongitudeRef
00 02
00 00 00 02 count
45 00 00 00 East
00 04 GPSLongitude
00 05 RATIONAL
00 00 00 03 count
00 00 05 5E offset+0c=0x56A 71 00 00 00 01 00 00 00 37 00 00 00 01 00 00 00 6C 00 00 00 04 00
113/1=113 55/1=55 108/4=27
通过windows的右键属性看详细
信息：113;55;27.000000000000171
550 04 00 16 00 00 00 01 00 00 00 22 00 00 00 01 00
560 00 00 51 00 00 00 04 00 00 00 71 00 00 00 01 00
570 00 00 37 00 00 00 01 00 00 00 6C 00 00 00 04 00
580 00 00 00 00 00 48 00 00 00 01 00 00 00 48 00 00
590 00 01 00 00 00 00 00 00
主要
分析gps相关
信息
对于Exif的相关
信息可以参照tag进行
分析。