コンソール上でImageMagickを使って画像ファイルのEXIF情報を取得する

あまり写真とか取らないのだけど、ふとLinuxのコンソール上で画像データのEXIF情報を取得するにはどうすれば良いのかなと思ったので調べてみたところ、ImageMagickを使ってやることで、コンソール上からファイルのEXIF情報を取得・削除といった事が可能なようだ。
ImageMagickは、CentOSならyum、Ubuntuであればaptからインストールができる。

sudo apt install imagemagick
sudo yum install ImageMagick

EXIF情報を確認する

インストール後、以下のコマンドでファイルのEXIF情報を取得することができる。
今回は、手元にEXIF情報のあるファイルがないのでこちらのサンプル画像を利用させてもらった。

identify -verbose ファイルPATH
[root@BS-PUB-CENT7-01 ~]# wget http://www.ksky.ne.jp/~yamama/jpggpsmap/sample/AkihabaraKousaten.JPG
--2017-08-06 04:43:36--  http://www.ksky.ne.jp/~yamama/jpggpsmap/sample/AkihabaraKousaten.JPG
www.ksky.ne.jp (www.ksky.ne.jp) をDNSに問いあわせています... 210.233.190.84
www.ksky.ne.jp (www.ksky.ne.jp)|210.233.190.84|:80 に接続しています... 接続しました。
HTTP による接続要求を送信しました、応答を待っています... 200 OK
長さ: 548570 (536K) [image/jpeg]
`AkihabaraKousaten.JPG' に保存中
100%[===================================================================================================================================================================================================>] 548,570     --.-K/s 時間 0.05s
2017-08-06 04:43:36 (11.4 MB/s) - `AkihabaraKousaten.JPG' へ保存完了 [548570/548570]
[root@BS-PUB-CENT7-01 ~]# identify -verbose ./AkihabaraKousaten.JPG
Image: ./AkihabaraKousaten.JPG
Format: JPEG (Joint Photographic Experts Group JFIF format)
Class: DirectClass
Geometry: 1200x1600+0+0
Resolution: 72x72
Print size: 16.6667x22.2222
Units: PixelsPerInch
Type: TrueColor
Endianess: Undefined
Colorspace: sRGB
Depth: 8-bit
Channel depth:
red: 8-bit
green: 8-bit
blue: 8-bit
Channel statistics:
Red:
min: 0 (0)
max: 255 (1)
mean: 92.9754 (0.364609)
standard deviation: 62.7977 (0.246266)
kurtosis: 0.812823
skewness: 1.30089
Green:
min: 0 (0)
max: 255 (1)
mean: 94.5935 (0.370955)
standard deviation: 64.6191 (0.253408)
kurtosis: 0.690189
skewness: 1.36728
Blue:
min: 0 (0)
max: 255 (1)
mean: 104.32 (0.409098)
standard deviation: 68.8523 (0.270009)
kurtosis: -0.114506
skewness: 1.09011
Image statistics:
Overall:
min: 0 (0)
max: 255 (1)
mean: 97.2963 (0.381554)
standard deviation: 65.4722 (0.256754)
kurtosis: 0.464047
skewness: 1.26142
Rendering intent: Perceptual
Gamma: 0.454545
Chromaticity:
red primary: (0.64,0.33)
green primary: (0.3,0.6)
blue primary: (0.15,0.06)
white point: (0.3127,0.329)
Interlace: None
Background color: white
Border color: srgb(223,223,223)
Matte color: grey74
Transparent color: black
Compose: Over
Page geometry: 1200x1600+0+0
Dispose: Undefined
Iterations: 0
Compression: JPEG
Quality: 92
Orientation: Undefined
Properties:
date:create: 2017-08-06T04:43:36+09:00
date:modify: 2008-07-09T22:31:13+09:00
exif:ApertureValue: 30/10
exif:BrightnessValue: -1/-1
exif:ColorSpace: 1
exif:ComponentsConfiguration: 1, 2, 3, 0
exif:Compression: 6
exif:Contrast: 0
exif:CustomRendered: 0
exif:DateTime: 2008:07:04 21:01:52
exif:DateTimeDigitized: 2008:07:04 21:01:52
exif:DateTimeOriginal: 2008:07:04 21:01:52
exif:DigitalZoomRatio: 100/100
exif:ExifImageLength: 1600
exif:ExifImageWidth: 1200
exif:ExifOffset: 350
exif:ExifVersion: 48, 50, 50, 48
exif:ExposureMode: 0
exif:Flash: 24
exif:FlashPixVersion: 48, 49, 48, 48
exif:FNumber: 30/10
exif:FocalLength: 477/100
exif:FocalLengthIn35mmFilm: 28
exif:GPSInfo: 660
exif:GPSLatitude: 35/1, 41/1, 5920/100
exif:GPSLatitudeRef: N
exif:GPSLongitude: 139/1, 46/1, 1812/100
exif:GPSLongitudeRef: E
exif:GPSMapDatum: WGS-84
exif:GPSVersionID: 2, 2, 0, 0
exif:ImageDescription: SA390017
exif:JPEGInterchangeFormat: 888
exif:JPEGInterchangeFormatLength: 6623
exif:LightSource: 0
exif:Make: KDDI-SA
exif:MaxApertureValue: 30/10
exif:MeteringMode: 1
exif:Model: W51SA
exif:ResolutionUnit: 2
exif:Saturation: 0
exif:SceneCaptureType: 0
exif:SceneType: 1
exif:Sharpness: 0
exif:SubjectDistance: 0/0
exif:SubjectDistanceRange: 0
exif:WhiteBalance: 0
exif:XResolution: 72/1
exif:YCbCrPositioning: 1
exif:YResolution: 72/1
jpeg:colorspace: 2
jpeg:sampling-factor: 1x2,1x1,1x1
signature: ed4f58a3429273fc4d64fe40d616bf77b0805723db5170a16684fafba37f8fb3
unknown: 65, 83, 67, 73, 73, 0, 0, 0, 71, 80, 83, 45, 70, 73, 88
Profiles:
Profile-exif: 7517 bytes
Artifacts:
filename: ./AkihabaraKousaten.JPG
verbose: true
Tainted: False
Filesize: 549KB
Number pixels: 1.92M
Pixels per second: 64MB
User time: 0.040u
Elapsed time: 0:01.030
Version: ImageMagick 6.7.8-9 2016-06-16 Q16 http://www.imagemagick.org
[root@BS-PUB-CENT7-01 ~]# identify -verbose ./AkihabaraKousaten.JPG | grep 'exif:'
exif:ApertureValue: 30/10
exif:BrightnessValue: -1/-1
exif:ColorSpace: 1
exif:ComponentsConfiguration: 1, 2, 3, 0
exif:Compression: 6
exif:Contrast: 0
exif:CustomRendered: 0
exif:DateTime: 2008:07:04 21:01:52
exif:DateTimeDigitized: 2008:07:04 21:01:52
exif:DateTimeOriginal: 2008:07:04 21:01:52
exif:DigitalZoomRatio: 100/100
exif:ExifImageLength: 1600
exif:ExifImageWidth: 1200
exif:ExifOffset: 350
exif:ExifVersion: 48, 50, 50, 48
exif:ExposureMode: 0
exif:Flash: 24
exif:FlashPixVersion: 48, 49, 48, 48
exif:FNumber: 30/10
exif:FocalLength: 477/100
exif:FocalLengthIn35mmFilm: 28
exif:GPSInfo: 660
exif:GPSLatitude: 35/1, 41/1, 5920/100
exif:GPSLatitudeRef: N
exif:GPSLongitude: 139/1, 46/1, 1812/100
exif:GPSLongitudeRef: E
exif:GPSMapDatum: WGS-84
exif:GPSVersionID: 2, 2, 0, 0
exif:ImageDescription: SA390017
exif:JPEGInterchangeFormat: 888
exif:JPEGInterchangeFormatLength: 6623
exif:LightSource: 0
exif:Make: KDDI-SA
exif:MaxApertureValue: 30/10
exif:MeteringMode: 1
exif:Model: W51SA
exif:ResolutionUnit: 2
exif:Saturation: 0
exif:SceneCaptureType: 0
exif:SceneType: 1
exif:Sharpness: 0
exif:SubjectDistance: 0/0
exif:SubjectDistanceRange: 0
exif:WhiteBalance: 0
exif:XResolution: 72/1
exif:YCbCrPositioning: 1
exif:YResolution: 72/1
Profile-exif: 7517 bytes

 

上記コマンドだと大量のデータが取得されるため、必要な箇所(カメラなどのモデルや緯度、経度といったGPS情報)のみを表示させる場合は、以下のようにformatを指定してやればいい。

identify -format "Make:%[EXIF:Make]\nModel:%[EXIF:Model]\nDate:%[EXIF:DateTime]\n緯度:%[EXIF:GPSLatitude]\n経度:%[EXIF:GPSLongitude]" ファイルPATH
[root@BS-PUB-CENT7-01 ~]# identify -format "Make:%[EXIF:Make]\nModel:%[EXIF:Model]\nDate:%[EXIF:DateTime]\n緯度:%[EXIF:GPSLatitude]\n経度:%[EXIF:GPSLongitude]" ./AkihabaraKousaten.JPG
Make:KDDI-SA
Model:W51SA
Date:2008:07:04 21:01:52
緯度:35/1, 41/1, 5920/100
経度:139/1, 46/1, 1812/100
Sponsored Links

EXIF情報を削除する

EXIF情報を削除する場合、convertコマンドで別のファイルに書き出すか、もしくはmogrifyコマンドで直接ファイルを変更することが可能だ。

convert -strip 元ファイル コピー先ファイル
[root@BS-PUB-CENT7-01 ~]# convert -strip ./AkihabaraKousaten.JPG ./AkihabaraKousaten.JPG.strip
[root@BS-PUB-CENT7-01 ~]# identify -verbose ./AkihabaraKousaten.JPG.strip
Image: ./AkihabaraKousaten.JPG.strip
Format: JPEG (Joint Photographic Experts Group JFIF format)
Class: DirectClass
Geometry: 1200x1600+0+0
Resolution: 72x72
Print size: 16.6667x22.2222
Units: PixelsPerInch
Type: TrueColor
Endianess: Undefined
Colorspace: sRGB
Depth: 8-bit
Channel depth:
red: 8-bit
green: 8-bit
blue: 8-bit
Channel statistics:
Red:
min: 0 (0)
max: 255 (1)
mean: 92.9628 (0.36456)
standard deviation: 62.8308 (0.246395)
kurtosis: 0.809192
skewness: 1.29937
Green:
min: 0 (0)
max: 255 (1)
mean: 94.58 (0.370902)
standard deviation: 64.61 (0.253373)
kurtosis: 0.688694
skewness: 1.36622
Blue:
min: 0 (0)
max: 255 (1)
mean: 104.273 (0.408912)
standard deviation: 68.8235 (0.269896)
kurtosis: -0.116854
skewness: 1.08713
Image statistics:
Overall:
min: 0 (0)
max: 255 (1)
mean: 97.2718 (0.381458)
standard deviation: 65.4697 (0.256744)
kurtosis: 0.460821
skewness: 1.2593
Rendering intent: Perceptual
Gamma: 0.454545
Chromaticity:
red primary: (0.64,0.33)
green primary: (0.3,0.6)
blue primary: (0.15,0.06)
white point: (0.3127,0.329)
Interlace: None
Background color: white
Border color: srgb(223,223,223)
Matte color: grey74
Transparent color: black
Compose: Over
Page geometry: 1200x1600+0+0
Dispose: Undefined
Iterations: 0
Compression: JPEG
Quality: 92
Orientation: Undefined
Properties:
date:create: 2017-08-06T05:12:41+09:00
date:modify: 2017-08-06T05:12:41+09:00
jpeg:colorspace: 2
jpeg:sampling-factor: 1x2,1x1,1x1
signature: ac1086147cdc50ba6dede52f12f1c135a26da23717bf44955166f8274634ef28
Artifacts:
filename: ./AkihabaraKousaten.JPG.strip
verbose: true
Tainted: False
Filesize: 434KB
Number pixels: 1.92M
Pixels per second: 48MB
User time: 0.040u
Elapsed time: 0:01.039
Version: ImageMagick 6.7.8-9 2016-06-16 Q16 http://www.imagemagick.org
[root@BS-PUB-CENT7-01 ~]# mogrify -strip ./AkihabaraKousaten.JPG
[root@BS-PUB-CENT7-01 ~]# identify -verbose ./AkihabaraKousaten.JPG
Image: ./AkihabaraKousaten.JPG
Format: JPEG (Joint Photographic Experts Group JFIF format)
Class: DirectClass
Geometry: 1200x1600+0+0
Resolution: 72x72
Print size: 16.6667x22.2222
Units: PixelsPerInch
Type: TrueColor
Endianess: Undefined
Colorspace: sRGB
Depth: 8-bit
Channel depth:
red: 8-bit
green: 8-bit
blue: 8-bit
Channel statistics:
Red:
min: 0 (0)
max: 255 (1)
mean: 92.9628 (0.36456)
standard deviation: 62.8308 (0.246395)
kurtosis: 0.809192
skewness: 1.29937
Green:
min: 0 (0)
max: 255 (1)
mean: 94.58 (0.370902)
standard deviation: 64.61 (0.253373)
kurtosis: 0.688694
skewness: 1.36622
Blue:
min: 0 (0)
max: 255 (1)
mean: 104.273 (0.408912)
standard deviation: 68.8235 (0.269896)
kurtosis: -0.116854
skewness: 1.08713
Image statistics:
Overall:
min: 0 (0)
max: 255 (1)
mean: 97.2718 (0.381458)
standard deviation: 65.4697 (0.256744)
kurtosis: 0.460821
skewness: 1.2593
Rendering intent: Perceptual
Gamma: 0.454545
Chromaticity:
red primary: (0.64,0.33)
green primary: (0.3,0.6)
blue primary: (0.15,0.06)
white point: (0.3127,0.329)
Interlace: None
Background color: white
Border color: srgb(223,223,223)
Matte color: grey74
Transparent color: black
Compose: Over
Page geometry: 1200x1600+0+0
Dispose: Undefined
Iterations: 0
Compression: JPEG
Quality: 92
Orientation: Undefined
Properties:
date:create: 2017-08-06T05:19:13+09:00
date:modify: 2017-08-06T05:19:13+09:00
jpeg:colorspace: 2
jpeg:sampling-factor: 1x2,1x1,1x1
signature: ac1086147cdc50ba6dede52f12f1c135a26da23717bf44955166f8274634ef28
Artifacts:
filename: ./AkihabaraKousaten.JPG
verbose: true
Tainted: False
Filesize: 434KB
Number pixels: 1.92M
Pixels per second: 64MB
User time: 0.020u
Elapsed time: 0:01.029
Version: ImageMagick 6.7.8-9 2016-06-16 Q16 http://www.imagemagick.org

 


Written by blacknon

インフラ系のSE。一時期はプログラマ。 仮想化とオープンソースに興味あり。一日中寝てたい今日このごろ。 スペインとかで働きたいなぁ…(シエスタがあるので)

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